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Maslowich
9 months ago
8

Given H = f(t) where H is the height in meters of an object and t is the time in

Mathematics
1 answer:
timama [110]9 months ago
4 0

Answer:

D

Step-by-step explanation:

Well, since t = time in air, we already know that it traveled 2 seconds.

H = height in meters, and H = 18

So, after 2 seconds the object is 18m in the air

So, option D

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True [87]

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Good question. That's a hard one but I think it's C. {(-4,-6), (-3,-2), (1,-2), (1,0)}

Step-by-step explanation:

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2 years ago
-2m-6=-6m+8<br><br><br> Someone pls help meeee !!
elena-14-01-66 [18.8K]

Answer:

m= 3.5

Step-by-step explanation:

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2 years ago
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What are the roots of this equation?
Katyanochek1 [597]

Answer:

x = 2 ± (i)√5  (Answer b)

Step-by-step explanation:

x²-4x+9=0 can be solved in a variety of ways; the first two that come to mind that are also appropriate are (1) completing the square and (2) using the quadratic formula.

Completing the square is fast here:

Rewrite x²-4x+9=0 as   x²-4x                    +9=0

Identify the coefficient of the x term:  it is -4

Take half of that, obtaining -2

Square this result, obtaining 4

Add 4 to   x²-4x                    +9=0, in the blank space in the middle, and then subtract 4:      x²-4x +4          -4         +9=0

Rewrite           x²-4x +4 as the square of a binomial:

                          (x - 2)² - 4 + 9  = 0  →    (x - 2)²  = -5

Take the square root of both sides:       x - 2  = ±√(-5)  =  ± (i)√5

Then x = 2 ± (i)√5

4 0
2 years ago
The quadratic function y = -10x2 + 160x - 430 models a store's daily profit (y), in dollars, for selling T-shirts priced at x do
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Answer:

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Step-by-step explanation:

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3 years ago
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