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2 years ago

13

Can someone help me do this question?

2 answers:

olasank [31]2 years ago

7 0

3(-2x-1)=2(x+5)

-6x-3=2x+10

-8x=13

x=-13/8

Sonbull [250]2 years ago

7 0

X=5 I kind of did this by trail and error but here’s my working outs
5-4=1
3/1=3
5-2=3

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NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t2+121t

Alenkasestr [34]

NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by

$h(t)=-4.9t^2+121t+283$

The sea level is represented by h = 0, therefore, to find the corresponding time when h splashes into the ocean we have to solve for t the following equation:

$h(t)=0\implies-4.9t^2+121t+283=0$

Using the quadratic formula, the solution for our problem is

$\begin{gathered} t=\frac{-(121)\pm\sqrt{(121)^2-4(-4.9)(283)}}{2(-4.9)} \\ =\frac{121\pm142.083778...}{9.8} \\ =\frac{121+142.083778...}{9.8} \\ =26.8452834694... \end{gathered}$

The rocket splashes after 26.845 seconds.

The maximum of this function happens at the root of the derivative. Differentiating our function, we have

$h^{\prime}(t)=-9.8t+121$

The root is

$-9.8t+121=0\implies t=\frac{121}{9.8}=12.347$

Then, the maximum height is

$h(12.347)=1029.99$

1029.99 meters above sea level.

6 0

1 year ago

The equation of the line pass through the points (-4,2) and (-5,2) is

ivanzaharov [21]

Answer:

y = 2

Step-by-step explanation:

Both points are on the horizontal line ...

y = 2

__

<em>Additional comment</em>

A horizontal line has equation y = constant. A vertical line has equation x = constant.

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2 years ago

Read 2 more answers

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densk [106]

That would be 177.5 in standard form.

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3 years ago

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tatiyna

Answer:

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solving steps:

$\rightarrow \sf (x + 4)^6$

$\bold{rewrite \ the \ following}$

$\rightarrow \sf (x + 4)^2 (x + 4)^2 (x + 4)^2$

$\bold {formula \ used : \sf (x+a)^2 = (x^2 + 2xa + a^2)}$

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$\bold{simplify \ by \ removing \ parenthesis}$

$\rightarrow \sf (x^4 +8x^3 + 16x^2 + 8x^3 +64x^2 + 128x+16x^2+128x+256 ) (x^2 + 8x+16)$

$\bold{basic \ addition \ of \ integers }$

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$\bold{remove \ parenthesis}$

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$\bold {final \ answer:}$

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Nezavi [6.7K]

Answer:

Step-by-step explanation:

Answer is in below attachment

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