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NeTakaya
3 years ago
13

The equation h(t)= -16t^2+864t models the path of a rocket shot into the air. After how many seconds does the rocket hit the gro

und?
Mathematics
1 answer:
Vika [28.1K]3 years ago
8 0

Answer:

t = 54 seconds

Step-by-step explanation:

The equation that models the path of a rocket into the air is given by :

h(t)= -16t^2+864t

It is required to find the time after which the rocket will hit the ground. When it hits the ground, the height of the rocket will becomes zero. It means,

h(t) = 0

i.e.

-16t^2+864t=0\\\\16t(-t+54)=0\\\\16t=0, -t+54=0\\\\t=0\ and\ t=54\ s

It means after 54 seconds, the rocket will hit the ground.

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B. -3 and 5

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3 years ago
A soccer goal should be centered in a penalty area. The penalty area is 17 yards wide. The goal is 5 yards wide. How many yards
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3 years ago
An uncle wills 3000.00 to his 2 nieces and one nephew. The older niece is to receive twice what the younger niece receives and t
Semenov [28]

Answer:

Nephew receive 1500.00

Older niece receive 1000.00

Younger niece receive 500.00

Step-by-step explanation:

Let assume a variable x,y,z for the niece, older niece and the nephew respectively.

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Since y = 2x

Z = x+2x

Z= 3x

Therefore:

X = 1x

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Z = 3x

So the will will be shared among them in the ratio

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Nephew. 3/6 x 3000 = 1500.00

Older niece 2/6 x 3000 = 1000.00

Younger niece 1/6 x 3000 = 500.00

8 0
3 years ago
1.)34°C=__°F<br>2.)94.6°F=__°C<br>3.)80°F=__°C<br>4.)42°C=__°F<br>5.)18°C=__°F​
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Answer:

Answer:

Step-by-step explanation:

1.)93.2F

2.)34.78°C

3.)26.67°C

4.)107.6°F

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I hope it's helpful!

6 0
2 years ago
What number has 2 hundreds and the tens digit is 9 more than the ones digit
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290
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5 0
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