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3 years ago

Picture is below (brainliest)

Mathematics

1 answer:

RSB [31]3 years ago

4 0

The answer would be B. supplementary means the angles add up to 180. so if you subtract 72 from 180, you get 108

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Need help with 5e + 8f + (-2)e - 12f

Ivanshal [37]

You have to add your like terms. So you would add 5e + (-2)e first. That would equal 3e. Next you would add 8f + (-12)f. That would equal -4f. You final answer would be 3e - 4f.

8 0

4 years ago

HELP!!! I'm struggling in this class could you please help a person out?

mel-nik [20]

Answer:

Options (2) and (3)

Step-by-step explanation:

Rigid transformation like translation, rotation or reflection form the image with no change in the area or shape.

By applying dilation, area of the image shape gets dilated by the scale factor 'k'.

If k > 1, area of the image will be greater than the original shape.

If 0 < k < 1, are of the image will be smaller than the original.

Option (1),

There is a dilation by a scale factor of $\frac{2}{3}$ and $0$ ,

Therefore, image will be smaller than the original.

Option (2)

There are two dilations.

First dilation is by a scale factor of 2 and the second is by a scale factor of $\frac{2}{3}$ .

By first dilation area of the image will get doubled.

Followed by the dilation by a scale factor of $\frac{2}{3}$ , area of the image will be dilated by the scale factor = $2\times \frac{2}{3}$

= $\frac{4}{3}$

Since, $\frac{4}{3}>1$ , image will be greater than the original.

Option (3)

In this option polygon is dilated by a scale factor $\frac{3}{2}$ .

Since, $\frac{3}{2}>1$

Image will have the greater area than the original.

Option (4)

In this option polygon is dilated by a scale factor $\frac{1}{2}$ .

Therefore, area of the image will be less than the area of the original.

Options (2) and (3) will be the correct options.

8 0

3 years ago

Michelle is working on a design for a new building. She has built a model of the building according to the client's specificatio

Snezhnost [94]

Answer:

Step-by-step explanation:

980

6 0

3 years ago

a jewelry store buys 24 necklaces for $300. the store wants to make a profit of $540. assuming it sells all 24 necklaces, how mu

Serga [27]

If its meaning making a profit after the $300 then:
540+300=840
840/24= 33.60
They would charge $33.60 per necklace.

If you were meaning a profit of $540 total then:
540/24=22.5
They would charge $22.50 per necklace.

3 0

4 years ago

the volume of a cone of radius r and height h is given by v=1/3pir^2h. If the radius and height is both increasing at a constant

Tamiku [17]

Answer:

The rate of change of the volume $\frac{dV}{dt}$ when the height is 9 centimeters and the radius is 6 centimeters is $24\pi \:\frac{cm^3}{s}$

Step-by-step explanation:

This is a related rate problem because you know a rate and want to find another rate that is related to it. If 2 variables both vary with respect to time and have a relation between them, we can express the rate of change of one in terms of the other.

From the information given we know:

$\frac{dr}{dt}=\frac{1}{2}\:\frac{cm}{s}$
$\frac{dh}{dt}=\frac{1}{2}\:\frac{cm}{s}$
The volume of a cone of radius r and height h is given by $V=\frac{1}{3} \pi r^2 h$

We want to find the rate of change of the volume $\frac{dV}{dt}$ when the height is 9 centimeters and the radius is 6 centimeters.

Applying implicit differentiation to the formula of the volume of a cone we get

$\frac{dV}{dt}=\frac{1}{3}\pi [r^2\frac{dh}{dt}+2rh\frac{dr}{dt} ]$

Substituting the values we know into the above formula:

$\frac{dV}{dt}=\frac{1}{3}\pi [(6)^2\frac{1}{2}+2(6)(9)\frac{1}{2} ]\\\\\frac{dV}{dt}=\frac{1}{3}\pi[18+54]\\\\\frac{dV}{dt}=\frac{72\pi}{3}=24\pi \:\frac{cm^3}{s}$

5 0

4 years ago