2 years ago

Simplify each expression justify each step 3x•(7•x)

Mathematics

1 answer:

jarptica [38.1K]2 years ago

8 0

Jdjdbdjdbdbbssnskskbsdnenen

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Would it be 0,-4 and 0,-2

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Tom throws a ball into the air. The ball travels on a parabolic path represented by the equation , where represents the height o

tigry1 [53]

Answer:

2.5 second

Step-by-step explanation:

The equation is missing in the question.

The equation is, $h=-8t^2+40t$ , where 'h' is the height and 't' is time measured in second.

Now we know to reach its maximum height, h in t seconds, the derivative of h with respect to time t is given by :

$\frac{dh}{dt} =0$

Now the differentiating the equation with respect to time t, we get

$\frac{dh}{dt}=\frac{d}{dt}(-8t^2+40t)$

$\frac{dh}{dt}=-16t+40$

For maximum height, $\frac{dh}{dt} =0$

So, $-16t+40=0$

$\Rightarrow 16t=40$

$\Rightarrow t=\frac{40}{16}$

$\Rightarrrow t = 2.5$

Therefore, the ball takes 2.5 seconds time to reach the maximum height.

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2 years ago

You use a juice mix to make orange juice. You combine 12 ounces of the mix with 36 ounces of water. Which is a unit rate that de

emmasim [6.3K]

12 ounces of juice mix 1 ounce of juice mix
__________________ = __________________
36 ounces of water 3 ounces of water

For every ounce of juice mix, there are 3 ounces of water.

Hopefully, this answers your question.

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3 years ago

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Joseph owns v video games. Harry owns 10 fewer than two times the number of video games that Joseph owns. Which expression repre

Tomtit [17]

Answer:

$v=30$

Sure hope this helps you

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2 years ago

A tire has a diameter of 184 cm what is the circumference of the tire

viktelen [127]

Here is your answer

diameter of tyre= 184cm

So,

Circumference= $\:{pi}$ ×d

= 3.14 × 184 cm

= 577.76 cm

HOPE IT IS USEFUL

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2 years ago