mmassaro19

26.02.2020 • 

Mathematics

PLEASE HELP ASAP for 5 stars and brainliest!!

1. Omar set off a rocket in a field. The height h of the rocket in feet can be roughly estimated using the formula

h = -16t^2 + 128t, where t is the time in seconds. How long will it take the rocket to reach a height of 240 feet?

2. Brandi, an amateur skier, begins on the "bunny hill," which has a vertical drop of 200 feet.

Her speed at the bottom of the hill is given by the equation v^2 = 64h, where the velocity v is in feet per second
and the height h of the hill is in feet. Assuming there is no friction, approximate Brandi's velocity at the bottom of the hill.
3. If the equation of the axis of symmetry of a quadratic function is x = 0, and one of the x-intercept is -4, what is the other x-intercept?

Ответ:

debbys1802

19.01.2022

Mathematics

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For the first first you would divid 16 by 16 and that give you 256 and not your equations is h=256+128 add those together it’s gives you 384

For the second you want to bring you want to turn v^2=64 into v=64 squared than you find the square root of 64 and that is 8.
So 8v

Last one one I don’t really understand fully so can u explain it a little more

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Ответ:

Yvette538

13.03.2021

Mathematics

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0.323

Step-by-step explanation:

Heres the full question

There are 8 women and 10 men with a chance to be on a game show. The producer of the show is going to choose of these people at random to be contestants. What is the probability that the producer chooses women and men? Round your answer to three decimal places

solution

total person = 8+10 = 18

total person chosen = 3 + 5 = 8

3 women out of 8 and 5 men out of 10 are chosen .

So,

required probability = 8C3 * 10C5 / 18C8 = 0.323

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