Approximately 24.1% of Kelly's taxable income is her tax.
What is percent?
Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100.
To determine what percent of Kelly's taxable income is her tax, we need to calculate her tax liability first.
Assuming that Kelly files as a single taxpayer with no dependents and takes the standard deduction, her taxable income of $50,000 falls into the 22% tax bracket for the year 2021.
Using the IRS tax tables for 2021, Kelly's tax liability would be approximately:
$9950 + (0.22 * ($50,000 - $40,525)) = $9950 + $2095.50 = $12045.50
Therefore, Kelly's tax liability is approximately $12,045.50.
To calculate what percent of her taxable income is her tax, we can divide her tax liability by her taxable income and multiply by 100:
($12,045.50 / $50,000) * 100 = 24.09%)
Therefore, approximately 24.1% of Kelly's taxable income is her tax. Rounded to one tenth of a percent, this is 24.1%.
To know more about percent visit,
https://brainly.com/question/24877689
#SPJ1
a scientist recorded the duration of the eruptions of the old faithful geyser in yellowstone national park that occurred during a one-month time period. the histogram below shows the distribution of the duration, in seconds, of the eruptions.
A scientist recorded the duration of the eruptions of the Old Faithful geyser in Yellowstone National Park that occurred during a one-month time period. The histogram below shows the distribution of the duration, in seconds, of the eruptions. By analyzing this data, the scientist can gain a better understanding of the behavior of the Old Faithful geyser and potentially make predictions about future eruptions.
The histogram shows that the majority of the eruptions had a duration between 120 and 140 seconds. There were also a significant number of eruptions with a duration between 100 and 120 seconds, and between 140 and 160 seconds.
It can also help them identify any unusual eruptions that may have a significantly shorter or longer duration than the majority of the eruptions
This data can help the scientist understand the typical duration of eruptions at the Old Faithful geyser in Yellowstone National Park..
Know more about Yellowstone National Park here:
https://brainly.com/question/1293334
#SPJ11
an angle that measures 125 is composed of 23 smaller angles two of the smaller angles measure of 25 and 40 Tom things you can use an equation 125+40-25 = s to find the measure of the unknown smaller angle s explain why Tom is incorrect, and tell how to find the measure of the third smaller angle s
Answer:
60
Step-by-step explanation:
The measure of the other angle is 60°.
What is an Angle ?
An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.
As given in the question
An angle that measures 125° is composed of three smaller angles.
Two of the smaller angles measure 25° and 40 degrees
Tom thinks he can use the equation 25 degrees + (40 degrees - 25 degrees) = s to find the measure of the unknown smaller angle, s
Tom is incorrect because the sum of the smaller angles will be equal to the bigger angle and the equation he has written is wrong.
The right equation and method will be
25 +40+x = 125
x = 125-40-25
x = 60°
Therefore the measure of the other angle is 60°.
ACDF is a rectangle with an area of (2x² + 2x - 12)cm². B is a point on AC and E is a point on FD such that ABEF is a square with side lengths
of (x-2) cm each.
Calculate the length of ED.
The length of side ED is x + 8.
What is the length of side ED?
The length of side ED is calculated by applying the formula for area of a rectangle as shown below.
Let the length of ED = L
Then the total length of the rectangle ACDF = L + (x - 2)
The formula for area of a rectangle = Length x Base
where;
the length of the rectangle = L + x - 2the base of the rectangle = x - 2Area = L + (x - 2) · (x - 2)
(2x² + 2x - 12 ) = (x - 2 ) · (L + x - 2 )
2x² + 2x - 12 = xL + x² - 2x - 2L - 2x + 4
2x² + 2x - 12 = xL + x² - 4x - 2L + 4
x² + 6x - 16 = xL - 2L
x² + 6x - 16 = L (x - 2 )
L = (x² + 6x - 16) / ( x - 2)
divide using long division;
x + 8
------------
x - 2 √ x² + 6x - 16
- (x² - 2x)
----------
8x - 16
- (8x - 16)
---------
0
L = x + 8
Learn more about area of a rectangle here: https://brainly.com/question/2607596
#SPJ1
ED = 2x - 2 = 2[(13 + √65) / 7] - 2 = (26 + 2√65) / 7
Therefore, the length of ED is (26 + 2√65) / 7 cm.
PLEASE I NEED HELP BADLY.
We have drawn the number line and included the given points, see attached number line.
What is the fraction?
A fraction is used to represent the portion/part of the whole thing. It represents the equal parts of the whole. A fraction has two parts, namely the numerator, and denominator. The number on the top is called the numerator, and the number on the bottom is called the denominator.
On the number line above, the decimal values and fractions are labeled as follows:
0.63 is labeled between 0 and 1.
34/100 is labeled at the same point as 0.34, between 0 and 1.
0.02 is labeled between 0 and 1.
7/10 is labeled at the same point as 0.7, between 0 and 1.
Therefore, we have drawn the number line and included the given points, see attached number line.
To learn more about the fraction visit:
brainly.com/question/17220365
#SPJ1
4 points
A 400ft tall building cast a shadow that is 75ft long. What is the angle of
depression from the sun, that makes this shadow? (Round to the nearest
tenth) *
Your answer
The angle of depression from the sun that makes the shadow is 69.1°.
The angle of depression from the sun can be calculated using the formula, tan θ = h/l, where θ is the angle of depression, h is the height of the building, and l is the length of the shadow. In this case, h is 400ft, and l is 75ft. Plugging these numbers into the formula gives us tan θ = 400/75, which simplifies to [tex]θ = tan^-1(400/75)[/tex]. Using a calculator, this gives us an angle of depression of θ = 69.1°. Therefore, the angle of depression from the sun that makes the shadow is 69.1°.
Learn more about angle of depression here:
https://brainly.com/question/13514202
#SPJ4
(Select all correct answers)
Consider the expression ([tex]x^{2}[/tex]−9) (x+4).
Select all the values of x for which ([tex]x^{2}[/tex]−9) (x+4)=0
3
9
-9
-3
-4
4
The only value of x for which (-9)(x+4) = 0 is x = -4.
Define the term expression?Calculations that include changeable altering multipliers, joining, removal, and random subdivision must be done. They could accomplish the following if they united: An algorithm, some data, and a mathematical problem.
The expression (-9)(x+4) can be simplified by using the distributive property of multiplication:
(-9)(x+4) = -9x - 36
To find the values of x for which (-9)(x+4) = 0, we can set the expression equal to zero and solve for x:
-9x - 36 = 0
Adding 36 to both sides gives:
-9x = 36
Dividing both sides by -9 gives:
x = -4
Therefore, the only value of x for which (-9)(x+4) = 0 is x = -4.
To know more about expressions, visit:
brainly.com/question/14083225
#SPJ1
Ts is tangent to the circle at u, find the value of x
The value of x for the given tangent on the circle is found to be :
x = 74.75.
Explain about the tangent chord theorem?According to the Tangent-Chord Theorem, the angle created by a chord and just a tangent line to a circle equals the inscribed angle on the chord's opposite side.
"The angle generated by a tangent to a circle or a chord is half of the angle measuring of the intercepted arc," is another way to state the Tangent-Chord theorem.
From the given data:
Line SUT is tangent on circle:
So,
Let the chord be UM.
∠TUM + 41° = 180° (linear pair)
∠TUM = 180° - 41°
∠TUM = 139°
Now, as per tangent chord theorem:
∠TUM = 1/2 * arc length (4x -21)
139° * 2 = 4x - 21
278 + 21 = 4x
299 = 4x
x = 299/4
x = 74.75
Thus, the value of x for the given tangent on the circle is found to be :
x = 74.75.
Know more about the tangent chord theorem
https://brainly.com/question/4470346
#SPJ1
Mary makes two blueberry pies
in two pie pans that are 6" in
diameter. What is the total area of
Mary's two pies?
Answer:
56.54862 in^2
Step-by-step explanation:
area = pi*radius^2
radius = 1/2 diameter
pi=3.14159.....
a=pi*3^2
a=3.14159*9
a=28.27431
two pies=56.54862
If one meter is approximately 3.28 feet, how many meters are in 20 feet?
Answer:
65.6
Step-by-step explanation:
1 meter = 3.28 feet
20 feet = 3.28 x 20
= 65.616798
= 65.6 (1 dp)
:)
Which of the following is a rational number?
Answer:
< because 1\2 is the same as .5 and .5 is less than 3
You have a 20-year annuity with a present value (that is, nest
egg) of $425,000. If the APR is 4.5%, what is the monthly yield?
Round your answer to the nearest cent. Monthly annuity yield =
$
The monthly yield of the 20-year annuity with a present value of $425,000 and an APR of 4.5% is $8,521.68.
What is monthly yield?Monthly yield refers to the return on an investment over a 12-month period. It is calculated by dividing the total return on an investment by the amount invested and multiplying it by 100 to get a percentage figure.
This is done by taking 1 plus the interest rate divided by the number of payments per year, raised to the number of years times the number of payments per year. In this case, the annuity factor is calculated as:
1 + 0.045/12)^(20*12) = 49.81961
Then, the monthly yield is determined by dividing the present value by the annuity factor. In this case, the monthly yield is calculated as:
$425,000 / 49.81961 = $8,521.68
Therefore, the monthly yield of the 20-year annuity with a present value of $425,000 and an APR of 4.5% is $8,521.68.
To learn more about monthly yield
https://brainly.com/question/29072727
#SPJ1
Calculate the average daily balance, finance charge, and new balance using the average daily balance method.
The account balance on June 1st is $104. 0. On June 19th a payment of $80. 25 is made. The monthly rate is 1. 25%
Date
6/1 - 6/18
6/19
Payments Purchases Balance Number of Days Product/Sum
$104. 00 18
1,872. 00
$80. 25
$23. 75
23. 75
$23. 75
261. 25
2,157. 00
-
6/20 - 6/30
=
Total
The average daily balance = 2,157. 00 = 30 = $ 71. 90
Finance charge = monthly rate x average daily balance = $
New balance = previous balance - payment/credits + finance charge + new purchases = $
The average daily balance is $1,000, the finance charge is $14.7, and the new balance is $3,029.4.
To calculate the average daily balance, finance charge, and new balance using the average daily balance method, follow the below steps:
Step 1: Obtain the balance owed for each day. To do so, determine the balance at the beginning of each day and the amount charged or credited during the day.
Step 2: Add up the balances for each day during the billing cycle, then divide by the number of days in the billing cycle. This calculation results in the average daily balance.
Step 3: Multiply the average daily balance by the daily interest rate to calculate the finance charge.Step 4: Add the finance charge to the previous balance to get the new balance. Example: Suppose an account has the following daily balances and APR, calculate the average daily balance, finance charge, and new balance using the average daily balance method:
Day 1 balance: $1,000Day 2 balance: $1,200Day 3 balance: $800Day 4 balance: $1,000APR: 18%The number of days in the billing cycle is 30.Average daily balance:($1,000 + $1,200 + $800 + $1,000) ÷ 4 = $1,000Finance charge:$1,000 × 0.18 ÷ 365 = $0.49 per day.$0.49 × 30 = $14.7New balance: Previous balance + finance charge = $3,014.7 + $14.7 = $3,029.4
For more such questions on balance
https://brainly.com/question/25225110
#SPJ11
1 Divide the given polynomial by the given monomial. (1) (5x² - 6x) ÷ 3x C C 31 2-2-2 (V)
The solution to the expression (5x² - 6x) / 3x is (5/3)x - 2
What is an equation?An equation is an expression that shows the relationship between numbers and variables using mathematical operators such as addition, subtraction, exponent, multiplication and division.
Equations can be classified based on degree as linear, quadratic, cubic and so on.
Given the polynomial:
5x² - 6x
Dividing the polynomial by the monomial 3x:
= (5x² - 6x) / 3x
= [x(5x - 6)] / 3x
= (5x - 6) / 3
= (5/3)x - 2
The solution to the equation is (5/3)x - 2
Find out more on equation at: https://brainly.com/question/2972832
#SPJ1
10 POINTS.CAN SOMEONE PLEASE HELP ME
Answer:
x = 60°
y = 60°
Step-by-step explanation:
The three angles of a triangle add up to 180°
In ΔWXY, 60 + 60 + x = 180°
=> 120 + x = 180
=> x = 180 - 120 = 60°
Since lines WZ and XY are parallel, x and y which are alternate interior angles must be equal
So y = x = 60°
How do I do this like I really need help with this been on it for two hours not knowing what to do
The equation of the line in slope-intercept form is given as follows:
y = -5x - 8.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation presented as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the change in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, which is the initial value of the function, i.e., the numeric value of the function when the input variable x assumes a value of 0. On a graph, it is the value of y when the graph of the function crosses tbe y-axis.The graph of the line crosses the y-axis at y = -8, hence the intercept b is given as follows:
b = -8.
When x increases by 1, y decays by 5, hence the slope m is given as follows:
m = -5/1
m = -5.
Hence the function is defined as follows:
y = -5x - 8.
More can be learned about linear functions at https://brainly.com/question/24808124
#SPJ1
This is the same information from the prior question.
Skidding distance can be determined using the formula d space equals space 2 square root of 5 x end root where d is the distance (in feet) and x is the speed (in miles per hour).
Calculate the approximate speed of the car when the skid marks are 20 feet long.
The approximate speed of the car when the skid marks are 20 feet long is 8.944 miles per hour.
What is importance of a formula?A formula is an expression in mathematics that denotes a connection or rule. In mathematics, science, and engineering, numbers and variables are described and computed using formulas. They can be stated verbally or symbolically, such as in verbal descriptions, or mathematically or symbolically, such in algebraic equations. Formulas can be applied to evaluate data, solve issues, and make predictions. They are utilised in a variety of disciplines, including physics, chemistry, biology, finance, and statistics, and are crucial for comprehending and explaining the physical world.
The skidding distance is given by the formula:
d = 2 * √(5x)
Isolating the value of x we have:
x = (d / (2 * √(5)))
Substituting the value of d = 20 we have:
x = (20 / (2 * √(5))) ≈ 8.944 miles per hour
Hence, the approximate speed of the car when the skid marks are 20 feet long is 8.944 miles per hour.
Learn more about skidding distance here:
https://brainly.com/question/17107316
#SPJ1
HELP ASAP is the relationship between the amount of dry dog food and the amount of wet dog food proportional the numbers are for dry god food (cups) (Y) there 4.5 6 9
for wet dog food (oz) (x) SHOW WORK THX
Yes, there is direct relatiοn in amοunt οf dry dοg fοοd and the amοunt οf wet dοg fοοd.
If amοunt οf dry dοg fοοd is x and the amοunt οf wet dοg fοοd is y then the relatiοn is given as: x = 3y
Hοw tο find the prοpοrtiοnality?Tο determine whether the relatiοnship between the amοunt οf dry dοg fοοd and the amοunt οf wet dοg fοοd is prοpοrtiοnal, we need tο check whether the ratiο οf the twο quantities remains cοnstant.
A) yes, there is direct relatiοn in amοunt οf dry dοg fοοd and the amοunt οf wet dοg fοοd. as amοunt οf dry dοg fοοd increases there alsο increase in amοunt οf wet gοοd.
if amοunt οf dry dοg fοοd is x and the amοunt οf wet dοg fοοd is y then the relatiοn is given as:
x = 3y
fοr example lets take values frοm first rοw
4.5 = 3 × 1.5
Learn more about proportional
https://brainly.com/question/29126329
#SPJ1
Complete question:
Tell whether the ordered pair is a solution of the linear system.
(-2,-3).
y=3x+3.
y=-x-5
The given ordered pair is not a solution of the linear system.
What is linear equations?Linear equations are mathematical equations that describe the relationship between two or more variables in a straight line. They can be written in the form of:
y = mx + b
According to question:To check if the ordered pair (-2, -3) is a solution to the system of linear equations, we need to substitute x = -2 and y = -3 into both equations and see if they are satisfied.
For the first equation y = 3x + 3, we have:
-3 = 3(-2) + 3
-3 = -3
This is true, so (-2, -3) satisfies the first equation.
For the second equation y = -x - 5, we have:
-3 = -(-2) - 5
-3 = 3
This is false, so (-2, -3) does not satisfy the second equation.
Since (-2, -3) satisfies the first equation but not the second equation, it is not a solution to the system of linear equations. Therefore, the answer is no.
Learn more about linear equation visit:
https://brainly.com/question/12974594
#SPJ1
brainlest if correct write an equation
Answer:
y = x - 2
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, - 2) and (x₂, y₂ ) = (2, 0) ← 2 points on the line
m = [tex]\frac{0-(-2)}{2-0}[/tex] = [tex]\frac{0+2}{2}[/tex] = [tex]\frac{2}{2}[/tex] = 1
the line crosses the y- axis at (0, - 2 ) ⇒ c = - 2
y = x - 2 ← equation of line
Rowan is taking his siblings to get ice cream. they can't decide whether to get a cone or a cup because they want to get the most ice cream for their money. if w = 4 in, x =6 in, y = 6 in, z = 2 in, and the cone and cup are filled evenly to the top with no overlap, which container will hold the most ice cream? use 3.14 for π, and round your answer to the nearest tenth. a cone with a height of x and a radius of w, a cylinder with a diameter of y and a height of z the cup holds 56.52 in3 more ice cream than the cone. the cone holds 56.52 in3 more ice cream than the cup. the cup holds 43.96 in3 more ice cream than the cone. the cone holds 43.96 in3 more ice cream than the cup.
Therefοre , the sοlutiοn οf the given prοblem οf area cοmes οut tο be The cοne hοlds 43.96 in³mοre ice cream than the cup, sο that is the cοrrect respοnse.
What precisely is an area?Calculating hοw much space wοuld be needed tο fully cοver the οutside will reveal its οverall size. When determining the surface οf such a trapezοidal fοrm, the surrοundings are additiοnally taken intο accοunt. The surface area οf sοmething determines its οverall dimensiοns. The number οf edges here between cubοid's fοur trapezοidal extremities determines hοw much water it can hοld inside.
Here,
We must determine the vοlumes οf the cοne and the cup in οrder tο cοmpare hοw much ice cream each cοntainer can carry.
=> Cοne vοlume = (1/3)r²h.
=> Cup vοlume = (1/4)d²h
where r is the cοne's radius (w/2), h is the cοne's height (x), d is the cup's width (y), and z is the cup's height.
Inputting the numbers prοvided yields:
=> Cοne vοlume = (1/3)π(2²)(6) = 16π cubic inches
=> Cup vοlume = (1/4)π(6²)(2) = 9π cubic inches
As a result, the cοne has a larger capacity than the cup.
The cοne hοlds 43.96 in³mοre ice cream than the cup, sο that is the cοrrect respοnse.
To know more about area visit:
brainly.com/question/2835293
#SPJ1
40 is what percent of 80?
Answer:
50%
Step-by-step explanation:
it's just half 80 so it's 50%
Is this right?Help please
Answer: They are not similar.
Step-by-step explanation: The angle measures are not the same for both triangles which makes them not similar to each other.
At the start of the day, a painter resteda 3 m ladder against a vertiçal wall So that the foot of the ladder was 50 cm away from the base of the wall. During the day, the ladder slipped down the wall, causing the foot of the ladder to move 70 cm further away from the base of the wall. How far down the wall, in centimetres, did the ladder slip? Give your anSwer to the nearest 1 cm.
The distance the ladder slipped down is 21cm.
How far down the wall did the ladder slip?The ladder, wall and the base of the wall form a right triangle. The ladder is the hypotenuse. The wall is the height and the distance of the foot of the ladder to the base of the wall is the base.
Pythagoras theorem would be used to determine the length of the wall.
The Pythagoras theorem: a² + b² = c²
where:
a = heightb = basec = hypotenuse100 cm = 1 meter
3 x 100 = 300 cm
a² + 50² = 300²
a² + 2500 = 90,000
a² = 90,000 - 2500
a² = 87,500
a = √87500
a = 296 cm
Height when the ladder slipped down:
(70 + 50)² + a² = 300²
120² + a² = 300²
14,400 + a² = 90,000
a² = 90,000 - 14,400
a² = 75,600
a = √75,600
a = 275
Distance the ladder slipped = 296- 275 = 21 cm
To learn more about Pythagoras theorem, please check: https://brainly.com/question/14580675
#SPJ1
I need some help on these 4 questions
Therefore , the solution of the given problem of function comes out to be f(N) = 360/N the cost per individual for any number of contributors to the gift is provided by this function.
What does function actually mean?The math lesson includes a wide range of topics, such as mathematics, integers, as well as one's divisions, architecture, and both actual mostly and fictitious geographic locations. The relationships between various components that all cooperate to create the same outcome are covered by a work. A utility is composed of numerous unique elements that work together to produce unique outcomes for each input.
Here,
To figure out how much each individual would spend, we need to divide the cost of the gift by the number of people contributing. Here are the estimates for various populations:
Each person would spend $180 ($360 / 2) if there were two people splitting the expense.
The expense would be divided among three people, who would each pay
=> $120 = ($360 / 3).
If the cost were divided among five individuals, each person would pay => $72 = ($360 / 5).
Ten people would split the expense equally, each spending
=> $36 = ($360 / 10).
Each person would spend
=> $3.60 = ($360 / 100)
if there were 100 people splitting the expense.
II. The algorithm is as follows:
Cost per individual equals total expense / number of individuals
=> f(N) = C/N
where f(N) is the price per individual.
The function for the cost per individual, for instance, is:
=> f(N) = 360/N
The cost per individual for any number of contributors to the gift is provided by this function.
To know more about function visit:
https://brainly.com/question/28193995
#SPJ1
A market researcher for a consumer electronics company wants to study the media viewing behavior of residents of a particular area. A random sample of 80 respondents is selected, and each respondent is instructed to keep a detailed record of time spent engaged viewing content across all screens in a particular week. The results are as follows: Content viewing time per week: X = 44 hours, S = 5.7 hours. 28 respondents have high definition (HD) on at least one television set. Complete parts (a) through (e) below. a. Construct a 90% confidence interval estimate for the mean content viewing time per week in this area. Isusa (Round to two decimal places as needed.) b. Construct a 90% confidence interval estimate for the population proportion of residents who have HD on at least one television set. Osas (Round to four decimal places as needed.) c. Suppose that the market researcher wants to take another survey in a different location. What sample size is required to be 90% confident of estimating the population mean content viewing time to within + 2 hours assuming that the population standard deviation is equal to 6 hours? (Type a whole number.) d. How many respondents need to be selected to be 90% confident of being within 10.05 of the population proportion who have HD on at least one television set if no previous estimate is available? (Type a whole number.) Enter your answer in each of the answer boxes. e. Based on (C) and (d), how many respondents should the market researcher select if a single survey is being conducted? (Type a whole number.) Enter your answer in each of the answer boxes.
a. Construct a 90% confidence interval estimate for the mean content viewing time per week in this area. Isusa
90% confidence interval estimate for the mean content viewing time per week: (41.75, 46.25)
b. Construct a 90% confidence interval estimate for the population proportion of residents who have HD on at least one television set. Osas
90% confidence interval estimate for the population proportion: (0.1867, 0.3833)
c. Suppose that the market researcher wants to take another survey in a different location. What sample size is required to be 90% confident of estimating the population mean content viewing time to within + 2 hours assuming that the population standard deviation is equal to 6 hours? (Type a whole number.)
Sample size required: 653
d. How many respondents need to be selected to be 90% confident of being within 10.05 of the population proportion who have HD on at least one television set if no previous estimate is available? (Type a whole number.) Enter your answer in each of the answer boxes.
Sample size required: 461
e. Based on (C) and (d), how many respondents should the market researcher select if a single survey is being conducted? (Type a whole number.) Enter your answer in each of the answer boxes.
Sample size required: 653
Algebraic expression
Constant
Variable
Algebraic operations
Term
Commutative property
Compare each of these.
Overall , an algebraic expression is a combination of constants, variables, and algebraic operations.
What is algebraic operations?Algebraic operations are mathematical operations (addition, subtraction, multiplication, and division) used to manipulate algebraic expressions.
Algebraic expression: An algebraic expression is a combination of variables, constants, and algebraic operations, such as addition, subtraction, multiplication, and division.
Constant: A constant is a fixed value that does not change throughout an algebraic expression. For example, in the expression 2x + 5, the constant is 5.
Variable: A variable is a symbol or letter that represents a value that can vary or change within an algebraic expression. For example, in the expression 2x + 5, the variable is x.
Algebraic operations: Algebraic operations are mathematical operations used to manipulate algebraic expressions.
Term: A term is a part of an algebraic expression that includes a constant or a variable, or a product of a constant and a variable. For example, in the expression 2x + 5, the terms are 2x and 5.
Commutative property: The commutative property of addition and multiplication states that the order of the terms in an expression can be changed without affecting the value of the expression. For example, a + b = b + a and ab = ba.
To know more about mathematical operations visit:
https://brainly.com/question/12210310
#SPJ1
On each trial of a digit span memory task, the participant is asked to read aloud a string of random digits. The participant must then repeat the digits in the correct order. If the participant is successful, the length of the next string is increased by one. For instance, if the participant repeats four digits successfully, she will hear five random digits on the next trial. The participant's score is the longest string of digits she can successfully repeat. A professor of cognitive psychology is interested in the number of digits successfully repeated on the digit span task among college students. She measures the number of digits successfully repeated for 36 randomly selected students. The professor knows that the distribution of scores is normal, but she does not know that the true average number of digits successfully repeated on the digit span task among college students is 7.06 digits with a standard deviation of 1.610 digits. The expected value of the mean of the 36 randomly selected students, M, is______. (Hint: Use the population mean and/or standard deviation just given to calculate the expected value of M.) The standard error of M is_____. (Hint: Use the population mean and/or standard deviation just given to calculate the standard error.)
The expected value of the mean of the 36 randomly selected students, M, is 7.06 digits and the standard error of the mean is 0.268 digits.
The expected value of the mean of the 36 randomly selected students can be calculated using the formula:
E(M) = μ
where μ is the population mean, which is given as 7.06 digits.
Therefore, expected value of mean of 36 randomly selected students is:
E(M) = 7.06 digits
The standard error of the mean (SE) can be calculated using the formula:
SE = σ / √(n)
where σ is the population standard deviation, which is given as 1.610 digits, and n is the sample size, which is 36 in this case.
Therefore, the standard error of the mean is:
SE = 1.610 / √(36) = 0.268 digits
Learn more about mean here: brainly.com/question/14532771
#SPJ1
PLEASE HELP!! SPECIAL RIGHT TRIANGLES I"LL GIVE YOU BRAINLIEST OR WHATEVER
Using the trigonometry function, the value of y = 3√2.
What exactly does math trigonometry mean?The area οf mathematics knοwn as trigοnοmetry is cοncerned with analyzing the relatiοnships between the sides and angles οf a right-angled triangle. A trigοnοmetric ratiο called the sides' ratiο serves as a representatiοn οf the relatiοnship. Trigοnοmetric ratiοs cοme in six varieties: sine, cοsine, tangent, cοtangent, secant, and cοsecant.
Trigοnοmetric functiοns are used tο calculate the lengths and angles οf geοmetric fοrms frοm knοwn οr measured angles. As a result οf the need tο cοmpute angles and distances in numerοus fields, including astrοnοmy, mapmaking, surveying, and artillery range finding, trigοnοmetry was develοped.
Since it is a 90-60-30 triangle, y is s √2
s = 3
so, y = 3√2
y = 3√2
To know more about trigonometry visit:
brainly.com/question/29002217
#SPJ1
Your friend estimates that a bookcase is 2 1/2 feet wide. The actual width is 2/3 foot longer. What is the width of the bookcase?
what are the trig functions?
Answer:
sin
cos
tan
csc
sec
cot
Step-by-step explanation:
easy to remember that they are reciprocals of each other