Three solid shapes a, b and c are similar.
the volume of shape a is 27 cm
the volume of shape b is 64 cm
the ratio of the surface area of shape b to the surface area of shape c is 8:15
work out the ratio of the height of shape a to the height of shape c.

Answer:

2.5

Step-by-step explanation:

5 divided by 2 is 2.5

Answer:

Each person would get around 2.5 oranges.

Step-by-step explanation:

There are five oranges to split between two people- this can set up the equation 5 divided by 2 equals x. The answer to 5 divided by 2 is 2.5, meaning that each person would get around 2.5 oranges. I hope this helps! :)

The students who has the method that is most representative of the school’s population is Amir.

Population refers to the group of people being studied in an experiment or the group from which a sample is drawn.

Amir has the method that is most representative of the school’s population because the method includes all students in the school studying different subjects but picked at random (every tenth students)

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Function

According to defination

A relation is called to be a function if every domain of the relation has an unique range .

Or

Here

Every domain has unique range

Hence it's a function

Answer:

Function

Step-by-step explanation:

The point is a function because it passes the vertical line test
It is not a relationship because each input have only 1 out put

The equation of the composite function is g(f(x)) = -2x - 6

The functions are given as:

f(x)= -2x - 5

g(x) = x - 1

In function g(x), we have:

g(x) = x - 1

Substitute f(x) for x

g(f(x)) = f(x) - 1

Substitute f(x)= -2x - 5

g(f(x)) = -2x - 5 - 1

Evaluate the difference

g(f(x)) = -2x - 6

This means that the equation of the composite function is g(f(x)) = -2x - 6

See attachment for the graph

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The value of the trigonometry functions will be:

sinθ = opposite / hypothenuse

cosθ = adjacent / hypothenuse

secθ = 1 / cosθ

cscθ = 1 / sinθ

tanθ = opposite / adjacent

cotθ = 1 / tanθ

It should be noted that trigonometry is the branch of mathematics that's is concerned with angles and their application.

When a triangle is drawn, the longest side is the hypothenuse, the side facing the angle is the opposite and the last side is the adjacent.

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The units used for area are squared length units, where the length units are: meter, inch, feet, etc.

The units used for surface areas are length units (meters, inches, feet, etc) squared.

Why we use those? Because area is defined as the product between the two dimensions (two sides of rectangle, for example) of a figure. And these dimensions are given in length units. So if we take the product of two of these, we will get squared length units.

The difference with volume units, is that for volume we need 3 dimensions, then we will have cubed length units.

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The perimeter of the bean bag toss board is 12 units

The points are given as:

C (3,2) D (3,6) E (5,2) F (5,6)

Calculate the distance between adjacent points using:

[tex]d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]

So, we have:

[tex]CD = \sqrt{(3 - 3)^2 + (2 - 6)^2} = 4[/tex]

[tex]DF = \sqrt{(3 - 5)^2 + (6 - 6)^2} = 2[/tex]

[tex]FE = \sqrt{(5 - 5)^2 + (2 - 6)^2} = 4[/tex]

[tex]CE = \sqrt{(3 - 5)^2 + (2 - 2)^2} = 2[/tex]

The perimeter is then calculated as:

P = CD + DF + FE + CE

This gives

P = 4 + 2 + 4 + 2

Evaluate

P =12

Hence, the perimeter of the bean bag toss board is 12 units

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Answer:

x = 2.25 x = 11.25 x = 13 x = 22

Step-by-step explanation:

Answer:

y=-3/10x+1/2

use the coordinates to find the gradient (m)then substitute it in this formula y=mx+c

find c by substituting one of the coordinate

Since the values on both sides are different, hence the set of equations has no solution

System of equation are made of two equations with unknown variables. Given the following equations

y = 6x + 9

y = 6x + 2

Equate

6x + 9 = 6x + 2

Collect the like terms

6x - 6x = 2 - 9

0x = -7

Since the values on both sides are different, hence the set of equations has no solution

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Answer:

C: 5%

Step-by-step explanation:

175 out of 3500 = 175/3500

175/3500 = 1/20

1/20 = 0.05

0.05 = 5%

Answer:

C 5%

Step-by-step explanation:

I am smart so trust me

Answer:

[tex]y=-\frac{1}{2}x+2[/tex]

Step-by-step explanation:

The equation for slope-intercept form is [tex]y=mx+b[/tex].

First, we find b by looking at where the line passes through where [tex]x=0[/tex]. We can see that it is 2, so in our equation for slope-intercept form [tex]b=2[/tex].

Next, we find the slope or m. Find the slope by taking two points and plugging them into this expression [tex]\frac{x_{1}-x_{2}}{y_{1}-y_{2}}[/tex]. To demonstrate, I will choose points (0,2) and (2,1), however, any pair of points will give you the same answer. When we plug in these points, we should get the expression [tex]\frac{0-2}{2-1}[/tex]. By solving this, we get -1/2. Therefore, in our equation for slope-intercept form, [tex]m=-\frac{1}{2}[/tex].

By putting the information we have about m and b together, we get the equation [tex]y=-\frac{1}{2}x+2[/tex].

The answer is Option C) 7th graders in her school.

In order to ascertain the suitability of a candidate for any popular position, his popularity can be assessed by taking a survey of the concerned sample.

Answer:

She should ask the 7th graders in  the school

Step-by-step explanation:

Because their opinion is important in electing the president.

20 palindromes exist that qualify this criteria rigorously

Examples:

52025, 52125, 52225, 52325, 52425, 52525, 52625, 52725, 52825, 57975 etc.

Answer:

2.8 s

Step-by-step explanation:

33x = 28x + 14(m)

5x = 14(m)

x = 2.8(s)

Answer:

Yes, Sally has enough money to buy 28 cans of soda.

Step-by-step explanation:

Yes, because £10 = 1000p

1000p / 28p = 35 cans

35 cans < 28 cans

So Sally has enough money for 28 cans.

In 15 years, the average car releases 458.7 kilograms of nox.

We know that the average vehicle releases 1.39 grams per mile driven.

And, in average, that car drives 22,000 miles per year.

So in a year, a car releases:

M = (22,000)*1.39 g  = 30,580 g = 30.58 kg

In one year, the average car releases around 30.58 kilograms of nox.

Then in 15 years, the car releases 15 times that amount, then we have the product:

T = 15*30.58 kg = 458.7 kg

In 15 years, the average car releases 458.7 kilograms of nox.

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To solve this, we need to use our trignometric functions;

   ⇒ look at the diagram attached

Let's examine what the problem wants:

Let's examine what the problem gives us:

Let's solve:

   [tex]sin(45)=\frac{5}{x} \\5=x*sin(45)\\x = \frac{5}{sin(45)} \\x=7.07[/tex]

Answer: 7.1 (rounded to nearest tenth)

Hope that helps!

Answer:

[tex]5\sqrt2[/tex]

Step-by-step explanation:

This is a 45-45-90 triangle so we can find all the side lengths easily.

The ratio between the base and the hypotenuse of a 45-45-90 triangle is [tex]1:\sqrt2[/tex], which means for this triangle it would be [tex]5:5\sqrt2[/tex]. This means the length of the hypotenuse is [tex]5\sqrt2\\[/tex], which is [tex]x[/tex], which is the answer.

Answer:

Yes it is a right angled triangle

Step-by-step explanation:

If its a right triangle it would satisfy the Pythagoras theorem.

29.3^2 = 858.49

28.5^2 = 812.25

6.8^2 =  46.24

Adding the last 2 values:

812.25 + 46.24

= 858.49

So YES.

The two statements about the dilated quadrilateral a'b'c'd' are false.

bc and bc' are on the same line ( False)

The length of the cd and c'd' are the same. (False)

The complete question is attached with the answer below.

Dilation is the process of increasing the size of an object while maintaining its shape. Depending on the scale factor, the object's size can be increased or decreased.

Here the quadrilateral abcd is dilated by the scale factor 5 / 2.So the new quadrilateral is a'b'c'd'.

The given two statements are false:-

bc and bc' are on the same line ( False)

The length of the cd and c'd' are the same. (False)

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The total amount that was raised for charity is £75.

Here is the sample space

                  1               2            3            4            5           6

Heads        1               4            9           16            25        36

Tails           1               8            27          64           125        216

Probability of getting a number greater than 30 = 4/12 = 1/3

1/3 x 450 = 150

Total value of people getting more than 30 : 150 x £1 = £150

Total amount paid = 50 x 450 = £225

Amount raised = £225 - 150 = £75

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Based on the area of the juicebox and the cost per square inch, the cost to create one package is $7.20.

First, find the area of the juice box. The formula is:

= 2lh + 2lw + 2hw

= (2 x 3 x 4) + (2 x 3 x 1.5) + (2 x 4 x 1.5)

= 45 inch²

The Cost is $0.02 per square inch and the number per package is 8 juice boxes. The total cost is:

= 45 x 0.02 x 8 boxes

= $7.20

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The standard deviation of the population function is 2

The given parameters are:

M(x) = 2

M(x²)=8

The standard deviation is calculated using:

[tex]\sigma = \sqrt{M(x^2) - (M(x))^2[/tex]

Substitute known values

[tex]\sigma = \sqrt{8 - 2^2[/tex]

Evaluate the expression

[tex]\sigma = 2[/tex]

Hence, the standard deviation of the population function is 2

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Answer:

all real numbers

ez clappp

Answer:

[tex](2x + 1)(x - 6)[/tex]

Step-by-step explanation:

[tex]2 {x}^{2} - 11x - 6[/tex]

[tex]2 {x}^{2} + x - 12x - 6[/tex]

[tex]x(2x + 1) - 6(2x + 1)[/tex]

[tex](2x + 1)(x - 6)[/tex]