z = (x - np) / σ
z = (43 - 100(0.50)) / 0.05
z = -1.4
P(z > -1.4) = 0.9192
a) The number of working women in the sample is 100. The majority of women prefer a better 'work-life balance' to a higher salary, according to a global research study. The majority in percentage is 50% or greater, which implies that 50% of 100 working women or more prefer a better work-life balance to an increased salary. If we assume that the null hypothesis is correct and the number of women who say having a flexible work schedule is important is exactly 50, the standard error for the sample can be calculated as follows:
σ = sqrt(p(1-p)/n)
σ = sqrt(0.50(1-0.50)/100)
σ = 0.05
P(x<50) can be calculated as follows:
z = (x - np) / σ
z = (50 - 100(0.50)) / 0.05
z = -20
P(z < -20) = 0
Therefore, the probability that fewer than 50% of the sample say that having a flexible work schedule is either very important or extremely important to their career success is 0.
b) The proportion of women who said having a flexible work schedule is very important or extremely important to their career success is more than 43%. That implies the number of women in the sample who say having a flexible work schedule is important is greater than 43.
P(x > 43) can be calculated as follows:
z = (x - np) / σ
z = (43 - 100(0.50)) / 0.05
z = -1.4
P(z > -1.4) = 0.9192
Therefore, the probability that more than 43% of the sample says having a flexible work schedule is very important or extremely important to their career success is 0.9192.
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Please help superrr confused :(
Step-by-step explanation:
Week 1, you eat 10 out of 95
Week 1 r ( 1) = 95 - 10(1) =85
Week 5 r(5) = 95 - 10r
=95 - 10(5)
=95 - 50
=45lbs
Week 8 r(8) = 95 - 10.r
=95 - 10(8)
=95 - 80
= 15 lbs
Week w r(w) = 95 - 10.w
= 95 - 10W (lbs)
f(r) = 95 - 10r
Where r is the number of weeks.
r(w) =35 means that at the end of w weeks, there were 35 candies left.
If the original candy was 95 and 35 was left after w weeks
r(w) = 95 - 10w
35 = 95 - 10w
Subract 95 from both sides
-60 = - 10w
Divide both sides by - 10
6= w
The solution means that 35 candies were left after w weeks and w represents 6weeks.
(you can c compare my answer with a second response)
14x +5y = 31 slve for x
Answer: x = 31 over 14 − 5y over 14
Step-by-step explanation: Move all terms that don't contain x to the right side and solve.
Given the equation 6x + 18 = 72:
Part A: Write a short word problem about a purchase made to illustrate the equation. (6 points)
Part B: Solve the equation showing all work. (4 points)
Part C: Explain what the value of the variable represents. (2 points)
the shape is formed from two straight lines and two arcs. work out the total shaded area correct to the nearest 0.1cm^2.
Check the picture below.
so we're really looking for the area of a sector of a circle with 63° and a radius of 3, twice.
[tex]\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta \pi r^2}{360} ~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ \theta =63\\ r=3 \end{cases}\implies A=\cfrac{(63)\pi (3)^2}{360} \\\\\\ A=\cfrac{63\pi }{40}\implies \stackrel{\textit{now let's double that}}{2\cdot \cfrac{63\pi }{40}}\implies \cfrac{63\pi }{20}\implies 9.9~cm^2[/tex]
Find each quotient using synthetic division. (m^(4)-7m^(3)-39m^(2)-28m-3)-:(m+3)
The quotient using a synthetic method of division is m³ - 10m² - 9m - 1
How to evaluate the quotient using a synthetic methodThe quotient expression is given as
(m⁴ -7m³ -39m² - 28m - 3) divided by m + 3
Using a synthetic method of quotient, we have the following set up
-3 | 1 -7 -39 -28 -3
|__________
Bring down the first coefficient, which is 1:
-3 | 1 -7 -39 -28 -3
|__________
1
Multiply -3 by 1 to get -3, and write it below the next coefficient and repeat the process
-3 | 1 -7 -39 -28 -3
|____-3__ 30__27__3____
1 -10 -9 -1 0
So, the quotient is m³ - 10m² - 9m - 1
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Dos ingenieros deciden medir la altura de una montaña cercana a un pueblo que está a 1200 msnm. Miden la cima de la montaña desde el punto "A" señalado en el gráfico con un ángulo de elevación de 37°, luego avanzan hacia al punto "B" que dista 480 m del punto "A" y vuelven a medir la cima con un ángulo de elevación de 45°. ¿Cuál es la altura de la montaña respecto al nivel del mar?
The height of the mountain above sea level is 777.94 m.
The two engineers can calculate the height of the mountain by using the principle of trigonometry. Firstly, they must calculate the altitude of the mountain from the point A, which can be done by using the formula h = tan (angle of elevation) * d, where h is the altitude, angle of elevation is the angle of elevation measured from point A and d is the distance between point A and the mountain. In this case, the altitude from point A is h = tan(37°) * 1200 = 1645.58 m. Secondly, they can calculate the altitude from point B, which can be done by using the same formula h = tan (angle of elevation) * d, where h is the altitude, angle of elevation is the angle of elevation measured from point B and d is the distance between point B and the mountain. In this case, the altitude from point B is h = tan(45°) * 480 = 867.64 m. Finally, the height of the mountain above sea level can be calculated by subtracting the altitude from point B from the altitude from point A, i.e. h = 1645.58 m - 867.64 m = 777.94 m.
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Question 7 (3 points)
solve for c: -2=c/16
Question 7 options:
c = - 1/8
c = -32
c = 32
c = 8
The solution of the equation -2 = c/16 by making c the subject of equation is c = -32
How to solve an equation?An equation is an expression containing numbers and variables linked together by mathematical operations such as addition, subtraction, division, multiplication and exponents.
Given the equation:
-2 = c/16
We are to solve for c by making c the subject of equation. To solve for c, we multiply both sides of the equation by 16 and simplify. Therefore:
-2 * 16 = c/16 * 16
Simplifying:
c = -32
The solution of the equation -2 = c/16 is c = -32
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PLEASE SHOW WORK!!!!!!!!!
Suppose given a representation of the symmetric group S3 on a vector space V. Let x and y denote the usual generators for S3. (a) Let u be a nonzero vector in V. Let v = u + xu + xều and w = u + yu. By analyzing the G-orbits of v, w, show that V contains a nonzero invariant subspace of dimension at most 2. (b) Prove that all irreducible two-dimensional representations of G are isomorphic, and determine all irreducible representations of G
The orbits of v and w imply a nonzero invariant subspace of dimension at most 2. All 2-dimensional irreducible representations of S3 are isomorphic and can be determined by the character table.
To show that V contains a nonzero invariant subspace of dimension at most 2, we analyze the G-orbits of v and w. Since x and y are the generators for S3, we can see that xv = x(u + xu + xều) = x²u + xều = u and yw = y(u + yu) = u + y²u = u. This implies that the G-orbits of v and w are the same, so V contains a nonzero invariant subspace of dimension at most 2. To prove that all irreducible two-dimensional representations of G are isomorphic, we must show that they all have the same character table. To do this, we can use the fact that the character table is an invariant of a representation, meaning that it is the same for all isomorphic representations. Therefore, all irreducible two-dimensional representations of G have the same character table, which can be determined by examining the character table for S3.
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Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a
monthly fee and a charge for each minute of calling time. In June she used 350 minutes and the cost
was $177.00. In July she used 900 minutes and the cost was $397.00.
A) Express the monthly cost C as a function of x, the number of minutes of calling time she used.
Answer: c(x) = 4x +
syntax error.
B) If Jane used 622 minutes of calling time in August, how much was her bill?
Answer: $
A persons lung capacity can be modeled by the function C(t) = 250sin(2x/5 * t) + 2450 where C(t) represents the volume in mL present in the lungs after t seconds. State the maximum value of this function over one full cycle and explain what this value represents
The maximum value of a full cycle can be 2700 mL, this gives the maximum volume of air inhaled by a person during one breath. The function C(t) = 250sin(2I/5(t))+2450.
It shows the capacity of the lung of a person at any point of time t in milliliters (mL).
We not only need to find the one full cycle but also determine the period of function and it is given by:
T = 2I/(2I/5)
T = 5 seconds.
This means that the function completes one full cycle every 5 seconds.
To find the maximum value of the function over one full cycle, we need to find the maximum value of sin(2π/5(t)). The maximum value of sin(2π/5t) is 1, this happens at 2π/5(t) = π/2 + nπ, and n is considered as an integer.
So, the maximum value of the function occurs when sin(2I/5(t)) = 1, Substituting this into the original function, we get maximum value, Cm:
Cm = 250(1) + 2450
= 2700 mL.
The maximum value of a full cycle can be 2700 mL, this gives the maximum volume of air inhaled by a person during one breath.
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Can someone write this 0.698, 0.2, 0.099, 0.18 in order please?
Answer:
0.099, 0.18, 0.2, 0.698.
Step-by-step explanation:
What is the value of sinD?
The value of sin(D) is 7/25 after the application of the Pythagoras theorem.
What is a Pythagoras theorem?The Pythagorean theorem is a fundamental theorem in geometry that describes the relationship between the sides of a right triangle. It claims that the hypotenuse's square length, which is the side that faces the right angle, is equivalent to the total of the squares of the lengths of the other two sides in a right triangle. The theorem can be formulated mathematically as:
c² = a² + b²
where, even the lengths for the remaining two sides (the legs) of the right triangle are a and b, and c is the length of the hypotenuse.
The Pythagorean theorem may be employed to determine the triangle's third side's length:
DE²= FD² + EF²
25² = 24² + EF²
625 = 576 + EF²
EF² = 49
EF = 7
Now, we can use the definition of sine to find sin(D):
sin(D) = opposite/hypotenuse = EF/DE = 7/25
Therefore, the value of sin(D) is 7/25.
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On Sunday, the owners of the Middletown Café are giving away muffins. The owners budgeted $75 to spend on muffins for the event, and each muffin costs $0.82. The inequality 75≥0.82m 75 ≥ 0 . 82 , where m is the number of muffins, represents the situation. How many customers could possibly get a muffin? Select all that apply.
Answer:
We can solve the inequality for m to find the maximum number of muffins that can be purchased within the budget of $75:
75 ≥ 0.82m
Divide both sides by 0.82:
m ≤ 91.46
Since m must be a whole number, the maximum number of muffins that can be purchased is 91. Therefore, 91 customers could possibly get a muffin.
Step-by-step explanation:
A circle has a radius of 5.4 cm. What is the exact length of an arc formed by a central angle measuring 45°?
The length of the arc with a central angle of 45° is 4.24 cm
What is an equation?An equation is an expression that shows how two or more numbers and variables are related using mathematical operations of addition, subtraction, multiplication, division, exponents and so on.
The length of an arc formed on a circle with a central angle Ф and radius r is:
Length of arc = (Ф/360) * 2πr
Given the circle radius is 5.4 cm and the central angle is 45°, hence:
Length of arc = (Ф/360) * 2πr = (45/360) * 2π(5.4) = 4.24 cm
The length of the arc is 4.24 cm
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the domain for the first input variable to predicate t is a set of students at a university. the domain for the second input variable to predicate t is the set of math classes offered at that university. the predicate t(x, y) indicates that student x has taken class y. sam is a student at the university and math 101 is one of the courses offered at the university. give a logical expression for each sentence. (a) sam has taken math 101. (b) every student has taken at least one math class. (c) every student has taken at least one class other than math 101. (d) there is a student who has taken every math class other than math 101. (e) everyone other than sam has taken at least two different math classes. (f) sam has taken exactly two math classes.
The logical expressions for each sentence can be written as follows:
(a) t(Sam, Math 101)
This expression states that Sam has taken Math 101.
(b) ∀x∃y t(x, y)
This expression states that for every student x, there exists a math class y such that the student x has taken the math class y.
(c) ∀x∃y (t(x, y) ∧ y ≠ Math 101)
This expression states that for every student x, there exists a class y such that the student x has taken the class y and the class y is not Math 101.
(d) ∃x∀y (t(x, y) ∧ y ≠ Math 101)
This expression states that there exists a student x such that for every math class y, the student x has taken the math class y and the math class y is not Math 101.
(e) ∀x∃y∃z (t(x, y) ∧ t(x, z) ∧ x ≠ Sam ∧ y ≠ z)
This expression states that for every student x, there exists two different math classes y and z such that the student x has taken the math classes y and z and the student x is not Sam.
(f) ∃y∃z (t(Sam, y) ∧ t(Sam, z) ∧ y ≠ z ∧ ∀w (t(Sam, w) → (w = y ∨ w = z)))
This expression states that there exists two different math classes y and z such that Sam has taken the math classes y and z and for every math class w, if Sam has taken the math class w, then the math class w is either y or z.
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If point A is the starting position, how high Is a rider after 3 seconds?
After 3 seconds, the rider is still at their starting height of 0 metres.
The height of a rider after 3 seconds can be calculated using the equation h(t) = v₀t - (1/2)gt², where h(t) is the height of the rider in metres at time t, v₀ is the initial velocity in metres per second, and g is the acceleration due to gravity in metres per second squared.
Assuming v₀ is 0, since the rider is just starting, and g is 9.81, then the height of the rider after 3 seconds is h(3) = 0 - (1/2)(9.81)(3²) = -44.355. Since this is a negative number, the rider is still at their starting height of 0 metres after 3 seconds.
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Of the 90 families in our barangay,60 are engaged in farming and the rest are in fishing. What percent of the families are engaged in farming?
Answer:
66.67%
Step-by-step explanation:
There are two ways to solve this problem depending on which way you like. Percentages are based on a 0-100 system and thus you can start by dividing 100/90. This will give you an amount of 1 family. We are looking for 60 families, so multiply that value by 60 to get how much of a percentage 60 families is.
The other way is to divide 90 by 60, and then multiply that result by 100 to give you a percent.
Regardless of your preferred method, both answers are the same.
determine whether or not the distribution is a probability distribution and select the reason(s) why or why not. x 2 4 6 p(x) 15 15 15 select all that apply: the given distribution is not a probability distribution, since the sum of probabilities is not equal to 1. the given distribution is a probability distribution, since the sum of probabilities is equal to 1. the given distribution is not a probability distribution, since at least one of the probabilities is greater than 1 or less than 0. the given distribution is a probability distribution, since the probabilities lie inclusively between 0 and 1.
The given distribution is not a probability distribution.
The given distribution is not a probability distribution, since the sum of probabilities is not equal to 1. A probability distribution must satisfy two conditions: 1) the probabilities must lie inclusively between 0 and 1, and 2) the sum of probabilities must be equal to 1.
In this case, the sum of probabilities is 15+15+15 = 45, which is not equal to 1. Therefore, the given distribution is not a probability distribution. The other options are incorrect because they do not accurately describe the given distribution.
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1. Suppose that there is a forest with 10,000 rabbits. We randomly select 100 of them, place a nonremovable mark on them, and set them free in the forest. After a couple of days, the marked rabbits mixed well with other living ones in the forest, and we randomly catch 50 rabbits from the forest. Find the probability that the sample of 50 rabbits contains exactly 2 marked rabbits.
The probability that the sample of 50 rabbits contains exactly 2 marked rabbits is 1/2.
Explain about the hypergeometric distribution?When sampling from either a small population without replacement, the hypergeometric distribution consists of a discrete probability distribution which determines the likelihood that an event occurs k times in n trials.
The absence of replacements in the hypergeometric distribution sets it apart from the binomial distribution.As a result, it is frequently used in random sampling to ensure statistical quality. A straightforward, indication would be choosing team members at random from a population of males and girls.The given data:
Total market sample of rabbits = 100.
Randomly selected rabbits = 50.
Let the probability that the sample of 50 rabbits contains exactly 2 marked rabbits be P(E).
Then, using hypergeometric distribution;
P(E) = ⁵⁰C₂ / ¹⁰⁰C₂
Solve the probability using the combination.
P(E) = 25*49 / 50*49
P(E) = 25/50
P(E) = 1/2
Thus, the probability that the sample of 50 rabbits contains exactly 2 marked rabbits is 1/2.
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3/10 Students go for the music class and 2/3 students go for the dance class. which class has more students?
Answer: The dance class has more students
Step-by-step explanation:
3 divided by 10 = 0.3
2 divided by 3 = 0.66
Since 0.66 is more than 0.3, we can say that more students entered the dance class than the music class.
the physician orders digoxin 0.25 mg po daily. the pharmacy supplies the following medication. the dosage strength of the digoxin can be expressed as: ? m g 1 t a b l e t
To calculate the dosage strength of digoxin, which is supplied by the pharmacy in mg per tablet, the physician orders digoxin 0.25 mg po daily.
In other words, The physician ordered 0.25 mg of digoxin to be administered orally every day. The medication provided by the pharmacy is to be taken in tablet form. To calculate the amount of digoxin in each tablet, you need to divide the ordered dose by the amount of tablets.
The equation is:Dose Ordered / Tablets = Dose per tablet
Substitute the known values:Dose Ordered = 0.25 mgTablets = 1 tablet0.25 mg / 1 tablet = 0.25 mg per tablet.
Therefore, the dosage strength of the digoxin supplied by the pharmacy is 0.25 mg per tablet.
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Mabel has $30,000 in a savings account that earns 11% annually. The interest is not compounded. How much interest will she earn in 2 years?
please help :(
Step-by-step explanation:
If the interest is not compounded, it means that Mabel will earn a simple interest of 11% per year on her principal amount of $30,000.
The formula for calculating simple interest is:
Interest = (Principal x Rate x Time)
Where:
Principal = $30,000
Rate = 11% = 0.11 (as a decimal)
Time = 2 years
So, substituting the values in the formula, we get:
Interest = (30,000 x 0.11 x 2) = $6,600
Therefore, Mabel will earn $6,600 in interest over a period of 2 years.
QX←→ is a tangent to circle R at point Q. Circle R with a chord and tangent. Point Q at 4 o clock on the circle. Point X at 2 o clock is outside the circle. Secant Line R Q and tangent line Q X. Angle XRQ is labeled 56 degrees. What is m∠RXQ ?
If Secant Line RQ and tangent line QX, angle XRQ is labeled 56 degrees, then the measure of angle RXQ is 34 degrees.
Since the line QX is tangent to the circle R, we know that angle QXR is a right angle. We also know that angle XRQ is labeled as 56 degrees. Therefore, we can find angle RXQ using the fact that the sum of the angles in a triangle is 180 degrees.
We have:
m∠RXQ + m∠QXR + m∠XRQ = 180 degrees
Since m∠QXR is a right angle (90 degrees), we can substitute:
m∠RXQ + 90 degrees + 56 degrees = 180 degrees
Simplifying:
m∠RXQ = 34 degrees
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a function is said to be differentiable at if exists. for some -values the derivative may not exist and we say that the function is not differentiable there. at which of the following locations is a function not differentiable? discontinuity cusp horizontal tangent line vertical tangent line
The location at which a function is not differentiable is a Vertical tangent line
A function may not be differentiable at some points. Such points are known as non-differentiable points. Let's take a look at each of the given terms to figure out the non-differentiable points. Discontinuity: A discontinuity is when a function's graph is interrupted by a break or hole.
It occurs when a function is undefined at a certain point. It may be classified into three categories: removable, jump, and infinite. Functions may not be differentiable at removable discontinuities but are differentiable at jump and infinite discontinuities. A discontinuous point is not the same as a non-differentiable point because it may be differentiable at other points of the function.
Cusp: A cusp is a sharp corner formed by a curve. It happens when the slope of the function approaches infinity. The curve is not differentiable at the cusp. Horizontal Tangent Line: When the slope of a function approaches zero, it creates a horizontal tangent line. The function may or may not be differentiable at this point depending on the shape of the graph.
It may be differentiable or not differentiable. Therefore, it is not a non-differentiable point. Vertical Tangent Line: When a function's slope approaches infinity, it creates a vertical tangent line. The function is non-differentiable at this point. A vertical tangent line is always a non-differentiable point.
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Question 7 What equation is parallel to y=-(1)/(4)x+5 and passes through (2,-3)?
The equation of the line that is parallel to y = -(1/4)x + 5 and passes through (2, -3) is y = -(1/4)x - 5/2.
To find the equation of the line that is parallel to the line y = −(1/4)x + 5 and passes through the point (2, −3), follow these steps:Step 1: Determine the slope of the given line.The slope-intercept form of the equation of the line is y = mx + b where m is the slope of the line. y = −(1/4)x + 5 is already in slope-intercept form, so its slope is −1/4. Step 2: Determine the slope of the line that is parallel to the given line. The slope of a line parallel to another line is the same as the slope of the given line. Therefore, the slope of the line we need to find is also −1/4. Step 3: Determine the y-intercept of the line we need to find. We already know that the line passes through the point (2, −3). To determine the y-intercept of the line, substitute x = 2 and y = −3 into the slope-intercept form of the equation of the line. −3 = −(1/4)(2) + b b = −3 + 1/2 = −5/2 Therefore, the y-intercept of the line we need to find is −5/2. Step 4: Write the equation of the line in slope-intercept form. The equation of the line we need to find is y = mx + b where m = −1/4 and b = −5/2. y = −(1/4)x − 5/2 is the equation of the line that is parallel to y = −(1/4)x + 5 and passes through (2, −3).Answer: The equation of the line that is parallel to y = -(1/4)x + 5 and passes through (2, -3) is y = -(1/4)x - 5/2.
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Given that the measurement is in centimeters, find the area of the circle to the nearest tenth. (use 3.14 for π) circle with a radius of 3 cm
The area of the circle to the nearest tenth is 28.3 square centimeters.
To find the area of a circle with a given radius, we use the formula
A = π[tex]r^2,[/tex]
where A is the area and r is the radius.
In this case, the radius is 3 cm, so we can substitute it into the formula to get:
A = 3.14 x [tex]3^2[/tex]
Simplifying this equation, we get the following:
A = 3.14 x 9
A = 28.26
To round this to the nearest tenth, we look at the digit in the hundredth place, 6. Since 6 is greater than or equal to 5, we round up the number in the tenth place, which is 2. Therefore, the final answer is:
A ≈ 28.3 [tex]cm^2[/tex]
So, the area of the circle to the nearest tenth is 28.3 square centimeters.
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please help if you can I will give brainliest- Black tape is used to create the lines and circles for a basketball court. How much tape is used in all? Use π=3.14.
Answer:
see below.
Step-by-step explanation:
So first, find the perimeter.
94*2= 188
50*2=100
100+188=288ft <----This is our perimeter
Next, find the length of the center line.
It is 50 feet.
Next, we are going to figure out the circumference of the big half circle.
C=[tex]\pi[/tex]d
C=(3.14)(44)=138.16 <------circumference of a WHOLE circle.
Divide 138.16 by 2 to get the half circle
138.16/2=69.08
There are 2 half circles, so multiply 69.08 by 2 to get 138.16
Next, we need to find the circumference of the center circle.
C=(3.14)(12)=37.68
Finally, add all the totals together
288+50+138.16+37.68=513.84 FEET <---dont forget units.
5, 6, 8, ___ , 15, ___
18, 20, 24, ___ , 38, ___
25, 28, 34, ___ , ___ , 70
55, 54, 51, 46, ___ , ___ , 19
82, 81, 78, ___ , 66
0 + 6 = ___+ 0
___ + 9 = 9 + 14
20 x ( 4 + ___) = ( 20 x 4 ) + (20 x 3)
9 + ( 6 + 5 ) = (9 + 6) + ___
10 x (___ + 6) = (10 x 8) + (10 x ___)
Answer:
5, 6, 8, 11, 15, 20
5+1=6+2=8+3=11+4=15+5=20
18, 20, 24, 30, 38, 48
18+2=20+4=24+6=30+8=38+10=48
55, 54, 51, 46, 39, 30, 19
55-1=54-3=51-5=46-7=39-9=30-11=19
82, 81, 78, 73, 66
82-1=81-3=78-5=73-7=66
0+6=6+0
6=6
14+9=9+14
23=23
20x(4+3)=(20x4)+(20x3)
20x7=80+60
140=140
9+(6+5)=(9+6)+5
9+11=15+5
20=20
10x(4+6)=(10x8)+(10x2)
100=100
Step-by-step explanation:
The solid shown here is a cube. Count the number of faces, edges, and vertices. Remember, you can use the formula V – E + F = 2 to make sure that you counted correctly.
Vertices
Edges
Faces
In the given cube, the required data is as follows:
Faces = 6
Edges = 12
Vertices = 8
What is a cube?A cube is a solid three-dimensional form with six square faces that all have the same length sides. It is one of the five platonic solids and is also referred to as a regular hexahedron.
Six square faces, eight vertices, and twelve edges make up the form.
Here in the question as asked,
Faces = 6
Edges = 12
Vertices = 8
Now to prove that we are correct,
V -E + F =2
= 8 - 12 + 6
=2
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