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3 years ago

6

In 1943, the temperature in Rapid City, South Dakota, fell about 45 degrees in 5 minutes. What was the average drop in temperatu

re per minute?

1 answer:

Anna007 [38]3 years ago

4 0

Answer:

9

Step-by-step explanation:

it is 45/5 to know the temperature per minute

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The height of a ball above the ground as a function of time is given by the function h(t)=−32t2+8t+3 where h is the height of th

gavmur [86]

Answer:

0.125 seconds.

Step-by-step explanation:

We have been given that the height of a ball above the ground as a function of time is given by the function $h(t)=-32t^2+8t+3$ , where h is the height of the ball in feet and t is the time in seconds.

We can see that our given equation is a downward opening parabola as its leading coefficient is negative. The maximum point will be vertex of parabola.

To find the time, when the ball would be at its maximum height, we need to find the x-coordinate of vertex.

Using formula $\frac{-b}{2a}$ , we will find the x-coordinate of vertex of parabola as:

$\frac{-b}{2a}$

$\frac{-8}{2*-32}$

$\frac{-8}{-64}$

$\frac{1}{8}$

$0.125$

Therefore, the ball will be at a maximum height after 0.125 seconds.

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3 years ago

William has a lemonade stand .Yesterday he made $17.55in lemonade sales and today he made $14.02 sales. How much does he have no

Zolol [24]

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Step-by-step explanation: 17.55 + 14.02 =31.57

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3 years ago

Evaluate and simplify the following complex fraction.

likoan [24]

Answer:

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2 years ago

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madam [21]

Answer:

c

Step-by-step explanation:

Pythagoras theroem

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3 years ago