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3 years ago

I need help quick please!

Mathematics

1 answer:

IRISSAK [1]3 years ago

6 0

taking that blank as x

8*13=8x+8*6

104=8x+48

104-48=8x

56=8x

x=7

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ziro4ka [17]

Answer:

The correct answer would be $a=\sqrt{c^2-b^2}$

Step-by-step explanation:

given $a^2+b^2=c^2$ we want to solve for a

How?

We can do this by using basic algebra ( isolating the variable (a ))

Step 1 subtract $b^2$ from each side

$a^2+b^2-b^2=a^2\\c^2-b^2=c^2-b^2$

now we have $a^2=c^2-b^2$

step 2 take the square root of each side

$\sqrt{a^2} =a\\\sqrt{c^2-b^2} =\sqrt{c^2-b^2}$

we're left with $a=\sqrt{c^2-b^2}$

Hence your answer is A

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Step-by-step explanation:

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Hello,

See this file.
==============

Download xls

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