Need help on all 3 of them please

Answers

Answer 1

Answer: 3)
A. (I.V)wind speed (D.V)wind chill
B.(I.V)merchandise bought (D.V)sales tax charged
C.(I.V)hours (D.V)dollars

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A cone-shaped container is filled with liquid. The container has a radius of 60 cm and an height of 210 cm. The liquid is drained from the container at a rate of 1099 cm3 per hour.How many hours will it take to drain all of the liquid?Use 3.14 to approximate pi.

Answers

pi * 60^2 * 210/3 = 791681
divide 791681 by 1099,
720 hours.

It takes 720 hours or 30 days to drain the liquid.

Answer:

The answer is 720 hours

What is the gcf of 60 and 72?

Answers

Hi. The gcf of 60 and 72 is 12. Hope that helps!

72/12=6
60/12=5

It's 12 because if u divide them both by 12 u get 6 and 5

In a machine , a large gear completes a revolution every minute while a small gear completes a revolution every 24 seconds. If the gears are currently aligned, how much time will pass before they are aligned again?

Answers

To make the second gear be aligned with the first, it will have to rotate 5 times, a total of 120 seconds or 2 minutes will pass.

A graph with a line running through coordinates (0,0) and coordinates (30,24)Item 3

Carl's new car gets 27 miles per gallon. What is the equation that represents y, the total miles driven on x gallons of gas?

a. x = 27y

b. y = 27x

c. y = 27 + x

d. x = 27 + y

Answers

Answer:

b. y = 27x

Step-by-step explanation:

When you talk about "per" it means multiplication, and 27 is being multiplied by (x) gallons of gas.

Nola hiked down a trail at a steady rate for 10 minutes. Her change in elevation was -200 feet. Then she continured to hike down for another 20 minutes at a different rate. Her change in elevation for this part of the hike was -300 feet. Durning which portion of the hike did she walk down at a faster rate? Explain your reasoning

Answers

a steady rate of 10 minutes is the faster rate because it took her 200 feet to get where she was at first but if she did for 20 minutes there would be 100 feet

400 should be the answer bc 10 is 200 so 20 should be 400

Given the function ƒ(x) = 8x^2 − 14x − 10, find ƒ(−2).

Answers

Answer:

f(-2) = 50

Step-by-step explanation:

What f(-2) simply means is that you will substitute -2 in f(x) = 8x^2 − 14x − 10.

That is wherever you see x you replace it by 2

f(-2) = 8(-2)² - 14(-2) - 10

= 8(4) + 28 - 10 (note (-2)² = -2 × -2 = 4. Also, -14 × -2 = 28)

= 32 + 28 - 10

= 60 -10

=50

Therefore f(-2) = 50

Answer:

f(- 2) = 50

Step-by-step explanation:

To evaluate f(- 2) substitute x = - 2 into f(x)

f(- 2) = 8(- 2)² - 14(- 2) - 10

= 8(4) + 28 - 10 = 32 + 28 - 10 = 50