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3 years ago

Please help. 48 points and the first answer is brainliest!

Mathematics

2 answers:

enyata [817]3 years ago

8 0

Answer:

B) f(x) = -16(x - 1.5)² + 40

Step-by-step explanation:

The equation we have is: h(t) = -16x² + 48x + 4

The answers are all in vertex form, so we need to covert this equation into vertex form by completing the square.

Step 1: factor out -16 from the first 2 terms...

-16(x² - 3x) + 4

Step 2: complete the square on this term...

-16(x² - 3x + (3/2)² - (3/2)²)

-16(x² - 3x + (3/2)²) + 4 + 16(3/2)²

-16(x - 3/2)² + 4 + 16(9/4)

-16(x - 1.5)² + 4 + 4(9)

-16(x - 1.5)² + 40

So f(x) = -16(x - 1.5)² + 40

DerKrebs [107]3 years ago

3 0

Answer:

its b i took the test

Step-by-step explanation:

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$(x + y) - (x - y) =2y$

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Step-by-step explanation:

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Given

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The expression that shows this is:

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