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2 years ago

How many minutes are in 2/4 if an hour

2 answers:

8 0

2/4 of an hour simplifies to 1/2 an hour, and because there are 60 minutes in an hour, 60 divided by 2 is 30, meaning there is 30 minutes in 2/4 of an hour.

Katyanochek1 [597]2 years ago

5 0

2/4 of an hour is half an hour so 2/4 of an hour is 30 minutes. Hope it helps

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A teenager who is 5 feet tall throws an object into the air. The quadratic function LaTeX: f\left(x\right)=-16x^2+64x+5f ( x ) =

tia_tia [17]

Answer:

At approximately x = 0.08 and x = 3.92.

Step-by-step explanation:

The height of the ball is modeled by the function:

$f(x)=-16x^2+64x+5$

Where f(x) is the height after x seconds.

We want to determine the time(s) when the ball is 10 feet in the air.

Therefore, we will set the function equal to 10 and solve for x:

$10=-16x^2+64x+5$

Subtracting 10 from both sides:

$-16x^2+64x-5=0$

For simplicity, divide both sides by -1:

$16x^2-64x+5=0$

We will use the quadratic formula. In this case a = 16, b = -64, and c = 5. Therefore:

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Substitute:

$\displaystyle x=\frac{-(-64)\pm\sqrt{(-64)^2-4(16)(5)}}{2(16)}$

Evaluate:

$\displaystyle x=\frac{64\pm\sqrt{3776}}{32}$

Simplify the square root:

$\sqrt{3776}=\sqrt{64\cdot 59}=8\sqrt{59}$

Therefore:

$\displaystyle x=\frac{64\pm8\sqrt{59}}{32}$

Simplify:

$\displaystyle x=\frac{8\pm\sqrt{59}}{4}$

Approximate:

$\displaystyle x=\frac{8+\sqrt{59}}{4}\approx 3.92\text{ and } x=\frac{8-\sqrt{59}}{4}\approx0.08$

Therefore, the ball will reach a height of 10 feet at approximately x = 0.08 and x = 3.92.

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2 years ago

Question <br> Which is the graph of y= 3/4x-3

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Answer:

the answer to the question is c

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Katena32 [7]

38 divided by .20. to get the answer

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2 years ago

Edward and his daughter, Jeanie, see their shadows while they are walking. Edward is 72 inches tall, and his shadow is 24 inches

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I think the answer is B I’m not fully sure

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2 years ago

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May someone help me with these to questions ASAP.. it’s an math question

lubasha [3.4K]

Answer:

20 is not a coefficient

True - constants are numbers that donʻt have a varible

Step-by-step explanation:

I hope this helps stay safe and have a good day! Can i get a brainiest if correct?

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2 years ago