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r-ruslan [8.4K]
3 years ago
12

A stone is dropped from the top of a tower. The height h in meters from where the stone is dropped to the ground is given by the

function h = -5t^2+ 10t + 40, where t is the time in seconds. How long does it take for the stone to touch the ground?
F) 2 sec
G) 3 sec
H) 3.5 sec
J) 4 sec
pls i need help lol
Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0

Wag umasa sa brainly

Step-by-step explanation:

Labot

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Answer:

SteAnswer:

y = 1/2x + 3/2

Step-by-step explanation:

Using the equation of the line

y - y_1 = m ( x - x_1)

First find the slope of the line

-2x + 4y = 8

It must be in this form

y = mx + C

4y = 8 + 2x

divide through by 4

4y/4 = 8 + 2x / 4

y = 8 + 2x/4

Let's separate

y = 8/4 + 2x/4

y = 2 + 1/2x

y = 1/2x + 2

Therefore, our slope or m is 1/2

Using the equation of the line

y - y_1 = m ( x - x_1)

With point (-5, -1)

x_1 = -5

y_1 = -1

y - (-1) = 1/2(x - (-5)

y + 1 = 1/2( x + 5)

Opening the brackets

y + 1 = x + 5 / 2

y = x + 5/2 - 1

Lcm is 2

y = x + 5 / 2 - 1/1

y = x + 5 -2/2

y = x +3/2

We can still separate it

y = x /2 + 3/2

y = 1/2x + 3/2

The equation of the line is

y = 1/2x + 3/2

The correct answer is A

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Answer:

I have a feeling it won't be exactly 15 minutes but it'll be around that time, if it's true.

Step-by-step explanation:

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I got D, but it had a decimal at the end between the 2 and the 6.
But i still got D. So D is my answer.
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3 years ago
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