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3 years ago

Simplify (1/2 pt each) -2^3= 8^2= 9^-1= (-4)^-2= HELPP PLSSS

Mathematics

2 answers:

bixtya [17]3 years ago

7 0

Answer:

-2³ = -8

8² = 64

9^-1 = 1/9

(-4)^-2 = 1/16

Step-by-step explanation:

ohaa [14]3 years ago

7 0

Answer:

-2^3= -8

8^2= 64

9^-1= 1/9

(-4)^-2= 1/16

Step-by-step explanation:

Wish this can help you.

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Last one!! I need the steps please! Will mark brainliest!

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Answer:

$h(t)=-6(t-2)^2+24$

Step-by-step explanation:

Given function:

$h(t)=-6t^2+24t$

where:

h = height (in feet)
t = times (in seconds)

Rewrite in the form $h(t)=a(t-h)^2+k$

The quickest way to do this is to expand $h(t)=a(t-h)^2+k$ and compare coefficients with the original function.

$\begin{aligned}h(t)& =a(t-h)^2+k\\ & = at^2-2aht+ah^2+k\end{aligned}$

Comparing coefficients with $h(t)=-6t^2+24t$

$\begin{aligned}\implies at^2& =-6t^2\\ a &=-6\end{aligned}$

$\begin{aligned}\implies -2aht & =24t\\ -2(-6)ht& =24t\\ 12ht & = 24t\\ 12h & = 24\\ h & = 2\end{aligned}$

$\begin{aligned}\implies ah^2+k & = 0\\(-6)(2)^2+k &=0\\ -24+k & =0\\ k &=24 \end{aligned}$

Therefore, substituting the found values into the equation:

$h(t)=-6(t-2)^2+24$

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1 year ago