3 years ago

Can someone help me simplify this? 16 + (-3) - 2/7j - 6/7j + 6

Mathematics

1 answer:

nikitadnepr [17]3 years ago

5 0

Answer:

-2/7J + 19

Step-by-step explanation:

Use PEMDAS to find your answer

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Total - book $ - magazine $

Which is equal to:

Total + (-book $) + (-magazine $)
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ANSWER: (C) $35 + (-$7) + (-$5)

Hope this helps! :)

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3 years ago

Complete the square than convert to vertex form. y=2x^2+8x-9

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$y=2x^2+8x-9\\D=b^2-4ac\\D=64-4(2)(-9)\\D=64+72 > 0$

There are 2 roots so the only way to complete the square is,

$y=2x^2+8x-9\\y=2[(x^2+4x)]-9\\y=2[(x^2+4x+4)-4]-9\\y=2[(x+2)^2-4]-9\\y=2(x+2)^2-8-9\\y=2(x+2)^2-17$

Just factor 2 out of 2x^2+8x (just ignore the -9) then find the number that will make the terms be able to complete the square.

then complete the square and multiply 2 inside the brackets.

subtraction as you already get the vertex form and know how to complete the square.

Vertex Form: $y=2(x+2)^2-17$

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3 years ago

If you double president Reagan’s age at the time of his first inauguration(69) and subtract his age at the time he died the resu

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It should be:

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Answer:

Step-by-step explanation:

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