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cupoosta [38]
3 years ago
10

The expression LaTeX: -5t^2+40t

Mathematics
1 answer:
dlinn [17]3 years ago
7 0

Answer:

8 seconds

Step-by-step explanation:

Given

h = - 5t² + 40t

When the object hits the ground then h = 0

Substitute h = 0 into the function and solve for t

- 5t² + 40t = 0 ← factor out - 5t from each term

- 5t(t - 8) = 0

Equate each factor to zero and solve for t

- 5t = 0 ⇒ t = 0

t - 8 = 0 ⇒ t = 8

t= 0 denotes the time of launch

t = 8 denotes the time it hits the ground

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Alexandra [31]
In my opinion, ur right
4 0
3 years ago
Someone help pleaseeee
qaws [65]

Answer:

Part A = D

Part B = 5 and 50

Step-by-step explanation:

Part A:

area = 5*4x = 20x

so, 100 \leq 20x \leq  1000

Part B:

to leave it only by x, you divide both sides by 20

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3 years ago
What are the solution(s) to the quadratic equation 9x2 = 4?
Lunna [17]
Multiply 9 by 2

18 = 4

Then subtract 4 from both sides

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3 0
3 years ago
25t - 87.5 = 12.5<br> What is the answer
patriot [66]
The answer is:t=4 You welcome
5 0
3 years ago
Read 2 more answers
I need the answer and work
ad-work [718]
A) 2x +3

Plug in the x

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Plug in the y

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C) x+y

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7 0
3 years ago
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