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Mandarinka [93]
3 years ago
11

For this Graph you have to pick which one of these are correct (no solution, infinity many solutions, 7,2 or 2,7)

Mathematics
1 answer:
Bingel [31]3 years ago
8 0

Answer:

Step-by-step explanation:

There is one solution

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Does anyone know what f(x)=-5x-1 when f(-7) i need help with this please.
vodomira [7]

Answer:

f(-7) = 34

Step-by-step explanation:

If f(x) = -5x - 1, then . . .

f(x) = -5x - 1

f(-7) = -5(-7) - 1

       = 35 - 1

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. . . because in f(-7), the (-7) is the x-value you're supposed to use to find the value of the function.

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3 years ago
Need help understanding the formula
ololo11 [35]

For this case we have the following equation:

H (t) = -16t ^ 2 + vt + s

Where,

t: time

v: initial speed

s: initial height

Substituting values we have:

H (t) = -16t ^ 2 + 15t + 4

By the time the ball hits the ground we have:

-16t ^ 2 + 15t + 4 = 0

From here, we clear the value of time:

Using the quadratic equation we have:

t=\frac{-15+/-\sqrt{15^2-4(-16)(4)}}{2(-16)}

Doing the calculations we have:

t1=-0.217\\t2=1.154

Discarding the negative root, we have that the time is:

t=1.154

Answer:

it takes the ball to hit the floor about:

1.15 seconds



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Answer:

254.47

Step-by-step explanation:

1/4\pid^2

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