3 years ago

Can someone help me with number 10 and 11 pls

Mathematics

1 answer:

Zina [86]3 years ago

5 0

Answer:

C and D

Step-by-step explanation:

You multiply the first two numbers and add the exponents of the second two while keeping the base number. I'm 99.9% sure. I hope this helps!

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Evgen [1.6K]

Answer:

It should take about 4.75 min.

Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

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A rectangle has length (3x-8) and width (2x-7) cm .Write down and simplify an expression for the perimeter of the rectangle. So

tatuchka [14]

Answer:

The perimeter of the rectangle is equal to $(10x-30)\ cm$

Step-by-step explanation:

Let

L-----> the length of the rectangle

W ----> the width of the rectangle

we know that

The perimeter of rectangle is equal to

$P=2(L+W)$

we have

$L=(3x-8)\ cm\\W=(2x-7)\ cm$

substitute

$P=2((3x-8)+(2x-7))$

$P=2(5x-15)$

$P=(10x-30)\ cm$

8 0

4 years ago

Please help me! Thank you! :)

Klio2033 [76]

Hey there! :D

Area= πr^2

So, the radius is half the diameter.

14/2= 7

7^2= 49

49π <== the answer

I hope this helps!
~kaikers

3 0

3 years ago

Enter your answer, as a decimal in the box.

arlik [135]

Using angle bisector theroem, we have:

$\frac{8}{5}=\frac{6}{x}$

Solving for x, we get x= $\frac{15}{4}$ or x=3.75

7 0

3 years ago