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3 years ago

12

If */2 + 4 = 12, then the value of a is

1 answer:

Akimi4 [234]3 years ago

6 0

Answer:

a=16 is your correct answer.

Hope it helps!!!

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If 3a +5b =10 and 5a +3b =30 what is the average of a and b?

saw5 [17]

Hello, please consider the following.

$3a+5b + 5a + 3b = 8(a+b)=10+30=40\\\\a+b=\dfrac{40}{8}=5$

And the average is

$\dfrac{a+b}{2}\boxed{=\dfrac{5}{2}}$

Thank you.

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3 years ago

A student has a rectangular book. The length of the book is 35

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Step-by-step explanation:

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P = 2(35) + 2(20) = 110 cm

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