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3 years ago

Please help with this problem. It's very confusing.

Mathematics

1 answer:

Eddi Din [679]3 years ago

8 0

Answer:

Step-by-step explanation:

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a toy rocket is launched from the top of a 48 foot hill. The rockets initial upward velocity is 32 feet per second and its heigh

sdas [7]

Answer:

t = 2.11 seconds

Step-by-step explanation:

A toy rocket is launched from the top of a 48 foot hill. The rockets initial upward velocity is 32 feet per second and its height h at any given second t is modeled by the equation:

$h=-16t^2+32t+48$

Let us assume that we need to find the time by it to reach the ground. It means h = 0

$-16t^2+32t+48=0$

The above is a quadratic equation. The value of t is given by :

$t=\dfrac{-b\pm \sqrt{b^2-2ac} }{2a}\\\\t=\dfrac{-b+ \sqrt{b^2-2ac} }{2a},\dfrac{-b- \sqrt{b^2-2ac} }{2a}\\\\t=\dfrac{-32+ \sqrt{(32)^2-2\times (-16)(8)} }{2\times (-16)},\dfrac{-32-\sqrt{(32)^{2}-2\times(-16)(8)}}{2\times(-16)}\\\\t=-0.11\ s, 2.11\ s$

So, it will take 2.11 seconds to reach the ground.

6 0

3 years ago

Please solve 25/5(2+3)=

Sveta_85 [38]

The answer to this question is 25

3 0

3 years ago

Find the slope given for (-2,-5) and (3,-2)

Whitepunk [10]

Answer:

The slope is 3/5

8 0

2 years ago

Read 2 more answers

What is the shaded area?

Pavlova-9 [17]

Answer:

Step-by-step explanation:

a . possible

b. ehhh

c. possible

d. possible

choose one

5 0

3 years ago

How is the answer 2.7

Darya [45]

Answer:

2.7

Step-by-step explanation:

Its 2.7 because if you use the calculator app on your phone or a calculator you can see that you use .09 30 times. that's why I reccomend a calculator. Or you can try cross multiplication.

3 0

3 years ago