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Romashka-Z-Leto [24]
3 years ago
15

CAN SOMEONE PLEASE HELP(IM BAD AT MATH)

Mathematics
1 answer:
anastassius [24]3 years ago
6 0

Answer:

C

Step-by-step explanation:

like I said, find the square area and subtract the triangles.

28 x 28= 784

Find the dimensions of the triangles. Since the surrounding shape is a square, the legs should be equal in length.

28-11.6=16.4

16.4/2=8.2

8.2 is the leg's length.

8.2*8.2*1/2*4=134.48

Subtract it to the square's area. 784-134.48= 649.52

Now round!

You get C

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sukhopar [10]

Answer:

A) (-5, -34)

Step-by-step explanation:

f(x) = x^2 + 10x - 9

We complete the square to get the equation in vertex form

Take the coefficient of the x term and divide by 2 then square it.  We add it and then subtract it not to change the value of the equation

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f(x) = x^2 +10x +25 -25 -9

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The term in parentheses simplified to (x+10/2) ^2

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