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qaws [65]
3 years ago
11

the height of an object after t seconds is given by f(t)=-5t^2+20t (a) find the height of the object after 2 seconds, and includ

e the correct units with your answer. (b) find the average (vertical) velocity of the object on the time interval [0,2]. show your work, include the correct units, and. circle your final answer. (c) find the instantaneous velocity at t=2
Mathematics
1 answer:
Leni [432]3 years ago
8 0

Answer:

t=20 4=5 =6 =8 =9 10

Step-by-step explanation:

And that is iy

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Answer:

3x - y = 0; 2x - y = -5

Step-by-step explanation:

Let x be the present age of Hans and y be the present age of Grace,

Since, in present Grace is three times as old as Hans,

⇒ y = 3x

⇒ 3x - y = 0

Now, after 5 years,

The age of Hans = x + 5,

And, the age of Grace = y + 5

Also, in 5 years Grace will be twice as old as Hans is then,

⇒ y + 5 = 2 ( x + 5 )

⇒ y + 5 = 2x + 10

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Hence, the required system of linear equations is,

3x - y = 0; 2x - y = -5

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3 years ago
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10/3 

hope this helped
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you have dance lessons every fifth day and you have skateboarding lessons every third day. today you have both lessons.in how ma
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5 0
2 years ago
Read 2 more answers
Can someone help me with this answer?
Rudik [331]

(4.2 \times  {10}^{5}) \times (3.2 \times  {10}^{6}) = 15.54 \times  {10}^{11}  = 1.554 \times  {10}^{12}

I hope I helped you ^_^

3 0
3 years ago
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