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3 years ago

Simplify the expression: 4(2a)+7(-4b)+(3b-5)

Mathematics

1 answer:

Alexus [3.1K]3 years ago

8 0

8a-25b-5 is the answer to ur question

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denis-greek [22]

Answer:

Part a) $AB=15\ cm$

Part b) $AB=11.1\ cm$

Part c) $AB=3/5\ cm$

Part d) $AB=3s\ cm$

Step-by-step explanation:

see the attached figure to better understand the question

we know that

To find the length of the image after a dilation, multiply the length of the pre-image by the scale factor

Part a) we have

The scale factor is 5

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(5)=15\ cm$

Part b) we have

The scale factor is 3.7

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(3.7)=11.1\ cm$

Part c) we have

The scale factor is 1/5

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(1/5)=3/5\ cm$

Part d) we have

The scale factor is s

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(s)=3s\ cm$

7 0

3 years ago

Please answer it’s due tomorrow

malfutka [58]

Answer:

60 servings

Step-by-step explanation:

Method 1: 2.5/10 (fraction) = 15/x (fraction)

Draw an arrow from 2.5 to 15 and write x6 (times 6)

Do the same from 10 to x

Then do 10*6 = 60

I don't know another method but hope this helps!

4 0

2 years ago

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ANSWER FAST!!!!<br> x-7=4

Rzqust [24]

The correct answer is x=11

5 0

3 years ago

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If the diagonal path is 750 feet long and the width of the park is 450 feet, what is the length, in feet, of the park?

jarptica [38.1K]

This problem can be looked at like a right triangle, where the hypotenuse is 750 and one leg is 450. Thus 450^2 + the length of the park^2 = 750 ^2.

202500 + the length of the park^2 = 562500

the length of the park^2 = 360000

the length of the park = 600

Hope it helps <3

8 0

3 years ago

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Find the area of the figure use 3.14 for pie

frosja888 [35]

What figure? there’s nothing here

7 0

2 years ago

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