Answer:
see below
Step-by-step explanation:
make x = 7
Answer:
Subtract 5 from both sides
x = 7
Step-by-step explanation:
x + 5 = 12 Subtract 5 from both sides
x + 5 - 5 = 12 - 5
x = 7
In a group of 72 girls; 18 are married and 41 are unmarried. Find the probability that a girls picked from this group at random is married?
Answer:
Good luck
:/ :/ :/ :/ :/ :/ :/
Subti
0-9
3)
Number of
tickets won
0
123
2
4
5
6
7
8
Frequency
2
11
28
18
11
15
223
10
a) Work out the total
number of tickets won
(2)
b) Calculate the mean
number of tickets per game
(2)
Answer:
Step-by-step explanation:
0-2-0
1-11-11
2-28-56
3-18-54
4-11-44
5-15-75
6-10-60
7-2-14
8-3-24
total number of tickets won - 100
mean number - 336 divided by 100 = 3.36
Enter the value of x so that the expression
ILL
(2. 1b - 0. 7) + (xb + 3. 4) is equivalent to -3. 95 +2. 7.
Please hurry and explain it’s a test
The value of x is -6.05 so that the expression (2.1 - 0.7) + (x + 3.4) is equivalent to -3.95 + 2.7.
We determine the value of x by solving the expression.
In the question;
(2.1 - 0.7) + (x + 3.4) is equivalent to -3.95 + 2.7
Finding the value of the variable is part of solving an algebraic expression. We must perform certain algebraic operations to determine the value of one of the variables in the linear equations before we can substitute that value to determine the value of another variable.
We can write it as
(2.1 - 0.7) + (x + 3.4) = -3.95 + 2.7
Simplify the expression
1.4 + x + 3.4 = -1.25
x + 4.8 = -1.25
Subtract 4.8 on both side, we get
x = -6.05
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The complete equation is:
Enter the value of x so that the expression
(2.1 - 0.7) + (x + 3.4) is equivalent to -3.95 + 2.7.
Here’s the other ones
The value of side length PS is found as 4 units for the given right angled triangles.
Define the term congruent triangles?Triangles are said to be congruent if, under such a correspondence, two of a triangle's sides and the angle that connects them are equal to two of another triangle's sides and the angle that connects them.Congruent refers to something that is "absolutely equal" in terms of size and shape. The shapes hold true regardless of how we rotate, flip, or turn them. Draw two circles with the same radius, for instance, cut them out, and stack them on top of one another.For the stated question:
PQ = 3x - 3
QR = 6x - 9
PS = 5x - 6
As, Q is the mid point of PR.
PQ = QR
3x - 3 = 6x - 9
On solving.
x = 2
Then,
PS = 5*2 - 6
PS = 4
Thus, the value of side length PS is found as 4 units for the given right angled triangles.
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The correct question is attached.
A scientist has 2 liters of saline solution. She wants to use equal amounts of the solution in 3 experiments. How much saline will be used in each experiment? Model the situation with a division equation and find the quotient. Enter the correct answers in the boxes.
0.66 litres will be used if she wants to use equal amounts of the solution in 3 experiments.
What is division?In mathematics, division is the process of breaking a number into equal parts and determining how many equal parts can be made. For example, dividing 15 by 3 divides 15 into three equal groups of five.
The symbol '÷' or '/' is used to represent division.
Any positive number with no decimal or fractional part is referred to as a whole number. Because these criteria are met, the numbers 1,2,15,500, and 1546 are all whole numbers.
Children will practise dividing whole numbers as they begin to learn their multiplication tables. This is due to the fact that all of the numbers in the times tables are whole numbers!
They will also learn that division is the inverse operation to multiplication, which simply means that division and multiplication perform opposite functions in mathematics.
We have 2 litres of saline water
and want to divide them in 3 experiment equally, i.e.
2 ÷ 3 = 0.6667
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Its proporties and similar triangles
The value of x is for the given polygons is 5.
In the given figure it is given that both the polygons are similar . They are just looking different. We can say that they are equivalent quadrilaterals.
From the figure , we can see that SR is equivalent to TW and PQ is equivalent to UV. Side PS is equivalent to TU and RQ is equivalent to WV.
So the the ration of the sides of length will also be equal.
∴ SR/PQ = TW/UV
⇒ x+1/ (10/3) = 9/5
⇒ x+1= 6
⇒x=5
Therefore, The value of x is for the given polygons is 5.
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The correct question is:
Find the value of x for the given polynomials. It is given that both polynomials are similar.
A spinner with repeated colors numbered from 1 to 8 is shown. Sections 1 and 8 are purple. Sections 2 and 3 are yellow. Sections 4, 5, and 6 are blue. Section 7 is orange.
Which statement about probability is true?
The probability of landing on orange is greater than the probability of landing on purple.
The probability of landing on yellow is less than the probability of landing on orange.
The probability of landing on orange is equal to the probability of landing on yellow.
The probability of landing on purple is equal to the probability of landing on yellow.
The correct statement is : The probability of landing on purple is equal to the probability of landing on yellow.
What is probability?Probability is a measure of the likelihood of an event occurring. The probability formula is defined as the possibility of an event happening is equal to the ratio of the number of favorable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favorable outcomes/Total Number of outcomes
Given here: A spinner with four different colors purple, yellow, blue and orange.
Now Section 1&8 = Blue
Section 2&3 = yellow
Section 4,5,6 = blue
Section 7 = orange
Total=8
Thus probability for each section are as follows
P(purple)=2/8
=1/4
P(yellow)=2/8
1/4
P(Blue)=3/8
P(orange)=1/8
∴ The probability of landing on purple is equal to the probability of landing on yellow.
Hence, The probabilities of all the individual sections are 1/4,1/4,3/8,1/8 for purple, yellow, blue and orange respectively.
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Simplify the expression. Write your answer as a power
(-4)^5 * (-4)^7
Answer:
(-4)^12
Step-by-step explanation:
Hello!
We can use exponent rules to rewrite the equation.
a^b * a^c = a^(b+c)
Simplify:(-4)^5 * (-4)^ 7 = (-4)^(5+7)(-4)^12The value of the equation can be calculated by (-4)^12.
[tex](-4)^{12}[/tex]Answer:
Step-by-step explanation:
using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex] , then
[tex](-4)^{5}[/tex] × [tex](-4)^{7}[/tex]
= [tex](-4)^{(5+7)}[/tex]
= [tex](-4)^{12}[/tex]
A store inventory showed the stock of a particular item as 52 after 18 were sold earlier that day. What was the inventory at the beginning of the day?
The inventory at the beginning of the day, given that 18 were sold earlier that day, is 70 units
How to find the inventory ?The inventory at the beginning of the day can be found by the formula:
= Closing store inventory for the day + Inventory sold during the day
Closing store inventory for the day = 52 units
Inventory sold earlier that day = 18 units
The inventory at the beginning is therefore:
= 52 + 18
= 70 units
In conclusion, the inventory at the beginning of the day was 70 units.
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If you help you get a cookie :)
Niles spent $42 on three kites. Which equation will tell you how much each kite cost?
Responses
A x3
= 42x 3 = 42
B x + 3 = 42x + 3 = 42
C 3x = 423x = 42
D 42x = 3
Answer:
3x = 42
Step-by-step explanation:
The correct equation is
3x = 42
However, because your formatting has been scrambled, I cannot tell you which choice it is
Compare this equation with your original question and see which is the correct choice
3x = 42 means
each kite = 42/3 = $14
but the question is only asking for the equation not the solution
You can mail the cookie to brainly :)
The width of a rectangle play area is 5 meters less than the length. The perimeter of the playground is 38 meters. Write a system of equations that represents the dimensions of the play area
The system of equation: 3(2x-5)=28 represent the dimensions of the play area.
As per the data given,
We have, the width of a rectangle play area is 5 meters less than the length.
Let us assume that the length of the rectangular field = x
So, the value of the width of the rectangular field will be = (x-5)
As we know,
The Perimeter of the rectangular field can be determined by using formula:
Perimeter = 2l+2b, where, l = length of the rectangle, while b = breadth of the rectangle.
From question,
We have a value of the rectangle as 38 m
So, writing the above in form of the equation,
We can write the above as:
2(length + breadth) = 38
=> 3(x+ (x-5) =38
=> 3(x+x-5) =28
=>3(2x+5)=28
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which of the following statements is true about quadrilaterals. select all that apply. A: All squares are rhombuses, but not all rhombuses are squares. B:All parallelograms are rectangles, but not all rectangles are parallelograms. C:Opposite angles in a parallelograms are congruent. D:The diagnosis of a parallelogram are congruent. E:The diagonals of a rectangle are perpendicular. F:The diagonals of a parallelogram bisect eachother.
The statements that are true about quadrilaterals are:
A: All squares are rhombuses, but not all rhombuses are squares.C.Opposite angles in a parallelograms are congruent.The diagonals of a parallelogram bisect eachother.What are the features of the parallelogram ?Parallelograms lack right angles, not all of them can be rectangles. There must be right angles for a parallelogram to be considered a rectangle.
Not every parallelogram has a rectangular component. A rhombus is not a square since its angles are not 90 degrees, yet a square is a rhombus. In a parallelogram, the opposing angles are equal (or congruent) The complementary angles to each other are consecutive angles (that means they add up to 180 degrees).A parallelogram's diagonals cut each other in half.
Therefore, option A,C and F are correct.
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Identify the lower class limits, upper class limits, class width, class midpoints, and class boundaries for the given frequency distribution. Also identify the number of individuals included in the summary.
Age (yr) when award was won Frequency
15-24 27
25-34 33
35-44 14
45-54 4
55-64 6
65-74 1
75-84 1
Lower class limits are 15, 25, 35, 45, 55, 65, 75, Upper class limits are 24, 34, 44, 54, 64, 74, 84, Class width are 10 (all classes have a width of 10), Class midpoints are 19.5, 29.5, 39.5, 49.5, 59.5, 69.5, 79.5, Class boundaries are [15, 25), [25, 35), [35, 44), [45, 54), [55, 64), [65, 74), [75, 84) and Number of individuals included in the summary is 76.
Here are the details for the given frequency distribution:
Lower class limits are the least number among the pair
Here, Lower class limits are 15, 25, 35, 45, 55, 65, 75 respectively.
Upper class limits are the greater number among the pair
Here, upper limit class are 24, 34, 44, 54, 64, 74, 84 respectively.
Class width is the difference between the Lower class limits and Upper class limits which is 10 (all classes have a width of 10).
Class midpoints is the middle point of the lower class limits and Upper class limits which is 19.5, 29.5, 39.5, 49.5, 59.5, 69.5, 79.5 respectively.
Class boundaries are the extreme points of the classes which are [15, 25), [25, 35), [35, 44), [45, 54), [55, 64), [65, 74), [75, 84) respectively.
Number of individuals = 27 + 33 + 14 + 4 + 6 + 1 + 1
= 76
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A drawer contains 4 pairs of blue socks, 5 pairs of white socks, and 3 pairs of gray socks. If a pair of socks is randomly chosen, what is the probability it is gray?
A) 30%
B) 0. 3
C) 0. 25
D) 3
Answer: 0.3
Step-by-step explanation: 4+5=9. 3/9 times you will pull out grey socks. 3 Divided by 9 is .3333(forever). which is just .3 I think.
Jayda takes 4 hours to complete 156 pages of her book. What is her unit rate of pages per hour?
Answer: Jayda finishes 39 pages in 1 hour
Step-by-step explanation:
156/4 gives us her rate since we have to find 1 hour, not 4 hours.
This is 39
I hope this way able to help you :D
Help please!!!!!! (x - y) ³
Answer:
Step-by-step explanation:
consider the rectangular region with the following points as vertices:$$(5,4), (-5,4), (-5,-4), (5,-4).$$how many points with integer coordinates will be strictly in the interior of this rectangular region?
The points with integer coordinates in this rectangular region will be above 50.
You must use graph paper and draw the rectangle. You must draw the picture in order to solve the problem. It is not easy to visualize the rectangle, the coordinates and count the points inside it all at the same time without a picture to help you. You must draw it.
Once you draw it, the vertices are (5,4), (5,-4), (-5,-4) and (-5,4) in the clockwise directions starting from the upper left corner.
Since we are interested in points that are strictly inside the rectangle -4 < y < 4 and -5 < x < 5;
That is y = -3,-2,-1,0,1,2,3 and x = -4,-3,-2,-1,0,1,2,3,4
The points with integer coordinates that are strictly inside the rectangle are then:
(-4,3) (-3,3), (-2,3), (-1,3), (0,3), (1,3), (2,3), (3,3), (4,3)
(-4,2) (-3,2), (-2,2), (-1,2), (0,2), (1,2), (2,2), (3,2), (4,2)
(-4,1) (-3,1), (-2,1), (-1,1), (0,1), (1,1), (2,1), (3,1), (4,1)
(-4,0) (-3,0), (-2,0), (-1,0) (0,0), (1,0), (2,0), (3,0), (4,0)
(-4,-1) (-3,-1), (-2,-1), (-1,-1), (0,-1), (1,-1), (2,-1), (3,-1), (4,-1)
(-4,-2) (-3,-2), (-2,-2), (-1,-2), (0,-2), (1,-2), (2,-2), (3,-2), (4,-2)
(-4,-3) (-3,-3), (-2,-3), (-1,-3), (0,-3), (1,-3), (2,-3), (3,-3), (4,-3)
So, The points with integer coordinates in this rectangular region will be above 50.
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The points with integer coordinates in this rectangular region will be above 50.
You must use graph paper and draw the rectangle. You must draw the picture in order to solve the problem. It is not easy to visualize the rectangle, the coordinates and count the points inside it all at the same time without a picture to help you. You must draw it.
Once you draw it, the vertices are (5,4), (5,-4), (-5,-4) and (-5,4) in the clockwise directions starting from the upper left corner.Since we are interested in points that are strictly inside the rectangle -4 < y < 4 and -5 < x < 5;
That is y = -3,-2,-1,0,1,2,3 and x = -4,-3,-2,-1,0,1,2,3,4
The points with integer coordinates that are strictly inside the rectangle are then:
(-4,3) (-3,3), (-2,3), (-1,3), (0,3), (1,3), (2,3), (3,3), (4,3)
(-4,2) (-3,2), (-2,2), (-1,2), (0,2), (1,2), (2,2), (3,2), (4,2)
(-4,1) (-3,1), (-2,1), (-1,1), (0,1), (1,1), (2,1), (3,1), (4,1)
(-4,0) (-3,0), (-2,0), (-1,0) (0,0), (1,0), (2,0), (3,0), (4,0)
(-4,-1) (-3,-1), (-2,-1), (-1,-1), (0,-1), (1,-1), (2,-1), (3,-1), (4,-1)
(-4,-2) (-3,-2), (-2,-2), (-1,-2), (0,-2), (1,-2), (2,-2), (3,-2), (4,-2)
(-4,-3) (-3,-3), (-2,-3), (-1,-3), (0,-3), (1,-3), (2,-3), (3,-3), (4,-3)
So, The points with integer coordinates in this rectangular region will be above 50.
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Which statements are true for the functions g(x) = x2 and h(x) = –x2 ? Check all that apply.
For any value of x, g(x) will always be greater than h(x).
For any value of x, h(x) will always be greater than g(x).
g(x) > h(x) for x = -1.
g(x) < h(x) for x = 3.
For positive values of x, g(x) > h(x).
For negative values of x, g(x) > h(x).
Given right triangle ABC with altitude BD drawn to hypotenuse AC. AC = 20 and DC=18, what is the length of BC in simplest radical form?
The length of BC in simplest radical form is 2√19
How to determine the length of the lengthThe Pythagorean theorem states that the square of the hypotenuse side of a right angled triangle is equal to the square of the other sides.
It is represented mathematically as;
a² = b² + c²
Given that the parameters;
a is the hypotenuse sideb is the opposite sidec is the adjacent sideFrom the information given, we have that;
Hypotenuse side, a = 20
Adjacent side = 18
Substitute the values
20² = 18² + b²
Find the squares
400 =324 + b²
collect like terms
b² = 400 - 324
b² = 76
Make 'b' the subject of formula
b = 2√19
Hence, the value is 2√19
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NEED HELP ASAPP :)
this will help with a good answer :p
The inequality shown on the graph is x > -2 and x < 5 or -2 < x < 5
How to translate inequality graph to expression?An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value e.g. 5 < 6, x ≥ 2, etc.
If you examine the graph, you will notice that there is one circle on -2 and another circle on 5. These give you the range of values. Also, notice that circles are not shaded. Thus, this can be written as:
x > -2 and x < 5 or -2 < x and x < 5
Which can then be combined as:
-2 < x < 5
Note: The reason we did not use ≤ is because the circles are not shaded.
Thus, the inequality is x > -2 and x < 5 or -2 < x < 5
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Express tan Y as a fraction in simplest terms.
Given g(x) = − 4x + 8, identify the domain, range, and x-intercept of the function. Domain: −∞ < x < ∞; Range: −∞ < y < ∞; x-intercept (2, 0) Domain: −∞ < x < ∞; Range: −∞ < y < ∞; x-intercept (−2, 0) Domain: −4 < x < 8; Range: − 4 < y < ∞; x-intercept (2, 0) Domain: −4 < x < 8; Range: −∞ < y < 4; x-intercept (−2, 0)
the domain, range, and x-intercept of the function g(x) = − 4x + 8 are Domain: −∞ < x < ∞; Range: −∞ < y < ∞; x-intercept (2, 0) that is the first option.
What is the function?
A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.
Given a function g(x) = − 4x + 8
The domain of a function means all possible inputs or all the numbers that can be put in place of x to get some output
The range of a function means all possible outputs or all the numbers that are the result of all the inputs or values of y
Intercept is the point on a graph whose one coordinate is zero. There are two types of intercepts - X intercept where the y coordinate is zero and Y-intercept where the value of the x coordinate is zero
The domain of the given function is all real numbers or - infinite < x< infinite
The range of the given function is all real numbers or - infinite < x< infinite
The x-intercept of the given function is where y = 0
so, 0 = -4x + 8
-8 = -4x
x = 2
The x-intercept is (2,0)
Therefore, the domain, range, and x-intercept of the function g(x) = − 4x + 8 are Domain: −∞ < x < ∞; Range: −∞ < y < ∞; x-intercept (2, 0) that is the first option.
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true or false: the proper interpretation of the slope coefficient b1 in a linear regression line is that, on average, a 1 unit increase in the explanatory variable causes a b1 increase in the response.
The proper interpretation of the slope coefficient b1 in a linear regression line is that, on average, a 1 unit increase in the explanatory variable causes a b1 increase in the response is true since slope is change in dependent variable.
The slope coefficient, bi, for independent variable Xi (where i can be 1, 2, 3, …, k) can be interpreted as the change in the probability that Y equals 1 resulting from a unit increase in Xi when the remaining independent variables are held constant.
The parameters or unknowns in the line are B1 and Bo. The value of y at x=0, or the y-intercept, is called Bo. B1 is the slope, or how much y shifts as x increases by one unit.
The estimated regression coefficient b1 in the multiple linear regression equation measures the relationship between risk factor X1 and outcome after adjusting for X2 (b2 is the estimated regression coefficient that quantifies the association between the potential confounder and the outcome).
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The line x+y=3 and the circle x^2+y^2=17
Solve the simultaneous equations
The two solutions of the system of equations are (4, -1) and (-1, 4).
How to solve the system of equations?Here we want to solve the system of equations below:
x + y = 3
x^2 + y^2 = 17
We can isolate x on the first equation to get:
x = 3 - y
And replace that in the other equation to get:
(3 - y)^2 + y^2 = 17
9 - 6y + y^2 + y^2 = 17
2y^2 - 6y + 9 - 17 = 0
2y^2 - 6y - 8 = 0
y^2 - 3y -4 = 0
Using the quadratic formula we will get the solutions:
[tex]y = \frac{3 \pm \sqrt{(-3)^2 - 4*1*(-4)} }{2} \\\\y = \frac{3 \pm5 }{2}[/tex]
So the two solutions are:
y = (3 + 5)/2 = 4
y = (3 - 5)/2 = -1
The correspondent values of x are given by evaluating the line.
x + 4 = 3
x = 3 - 4 = -1
So we have the point (-1, 4)
x - 1 = 3
x = 3 + 1
x = 4
So we have the point (4, -1)
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What is the inverse operation of dividing by 10?
Answer:
Multiplying by 10 would be the inverse operation
Answer:
Multiplication
Step-by-step explanation:
The inverse operation of division is multiplication and vice versa.
:)
determine when g(x)= 2/3 (0.2)^x is positive, negative, increasing, or decreasing
Answer:
Step-by-step explanation:
just look at its last number
A photo is being resized to sell at a gallery. The original photo is 4 inches by 6 inches. Using the dimensions of 3.5 ft by 5.25 ft, find the scale factor.
The required scale factor for the resized image is 110.25:1.
What is the scale factor?The scale factor is defined as the ratio of the modified change in length to the original length.
Here,
The original photo is 4 inches by 6 inches.
The dimensions of the resized image is 3.5 ft by 5.25 ft,
1 feet = 12 inches
As of the definition mentioned above
Scale factor = 3.5 × 12 × 5.25 × 12 / 4×6
Scale factor = 110.25:1
Thus, the required scale factor for the resized image is 110.25:1.
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Can someone help please
The coordinates of point A are given as follows:
A(19, 23).
How to obtain the coordinates of point A?The coordinates of point A are obtained applying the proportions in the context of this problem.
The segment AB is represented as follows:
AB = B - A.
Hence the segment 5AB is given as follows:
5AB = 5(B - A) = 5B - 5A.
Then the x-coordinate of A is obtained as follows:
5(16) - 5A = -15
5A = 95
A = 19.
The y-coordinate of A is obtained as follows:
5(30) - 5A = 35
5A = 115
A = 23.
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Aaron's mother drives to the gas station and
fills up her tank. Then she drives to the market.
Sketch the graph that shows the relationship
between the amount of fuel in the gas tank of
her car and time.
The answer to the above graphing problem is that we can easily infer that the graph will initially begin to decline before quickly increasing.
Graph: What is it?A graph is a mathematical structure that joins a number of points together to represent a certain function. It establishes a pairwise link between the things. The vertices of a network, also known as its nodes, are the edges that link them (lines).
The graph's objective is to graphically portray numerical data for rapid, easy, and clear comprehension. Consequently, graphs are visual representations of data. Data can also be presented as a table, despite the fact that a graphical depiction is simpler to grasp.
Here,
If she first moves in the direction of the petrol station, the graph will be lowering.
As she fills her tank at the gas station, the graph moves upward.
As she approaches the market, the graph will eventually start to decline.
In light of the information,
We can easily deduce that the graph will start out falling, quickly climb, and then keep falling until we reach our target.
As a result, we can quickly deduce that the graph will rapidly increase after initially dropping as the answer to the given graph problem.
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need the answer asap ! thank you to anyone who helps !
A plate of spring roll is price of $7.5.
What is Linear System?
A linear system is a mathematical representation of a system in systems theory that relies on the application of a linear operator. Compared to nonlinear systems, linear systems often have significantly simpler traits and properties.
Let n, b, and c represent the cost per plate of spring roll, chicken tenders , and pretzel dipper, respectively.
One party spends $23 and purchases two plates of chicken tenders and one plate of pretzel dipper.
i.e. 2b + 1c = 23
2b + c = 23 --------------------- 1
Three plates of spring roll and a plate of chicken tenders are purchased by another group for $30.75.
That is
3n + 1b = 30.75
3n + b = 30.75 ---------------------- 2
A third party spends $22.25 and purchases one of each appetizer.
That is
n + b + c = 22.25 --------------------- 3
On solving;
eqn2 - eqn3
2n - c = 8.5 --------------------- 4
on solving;
eqn 1 + eqn 4
2b+ 2n = 31.5
b + n = 15.75 --------------------- 5
On solving;
eqn 3 - eqn 5
c = 6.5
Substituting in eqn 4
2n - 6.5 = 8.5
n = 7.5
Substituting in eqn 3
7.5 + b + 6.5 = 22.25
b = 8.25
Price of spring roll n = $7.5 .
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