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Brums [2.3K]
3 years ago
9

If you can mow 1000 square feet per minute, how long to mow a circle with diameter of 800 feet?

Mathematics
1 answer:
maria [59]3 years ago
3 0

Answer:

You can calculate the area of the circle

We know the formula is: \pi*r^2

And if diammeter is 800, then the radio is a half: 400

We replace:

\pi*r^2 --> \pi * 400^2 \approx 502654.8  feet

So now we can divide:

502654/1000 = 502,654 minutes

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Kazeer [188]
The trapezoid on the bottom right doesn’t belong. All the other quadrilaterals have opposite sides that are congruent.
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Question 4 i need help on!!
MrMuchimi

Answer:

C  20

Step-by-step explanation:

Set up equations:

Laguna's Truck Rentals

y = 2x + 20

Where x is the number of miles driven and y is the total price

<em>How did we get to this equation?</em>

Well, the company charges $2 for every mile driven. Therefore, by multiplying 2 and x, you will find the price paid per mile. The 20 (which represents $20) is the one-time payment you pay for simply using the service.

Salvatori's Truck Rentals

y = 3x

Where x is the number of miles driven and y is the total price

<em>How did we get to this equation?</em>

For this company, you only pay for how many miles you drive. There isn't a one-time payment like there is for Laguna's Truck Rentals. Therefore, you only need to multiply the price per mile ($3) by the number of miles driven (x).

Set the equations equal to each other:

2x + 20 = 3x

<em>Why would you do this?</em>

We need to set the equations equal to each other because we need to find the point at which the prices are the same. When two things are the same, they are equal. Therefore, we get rid of the y variable (which represents the total price) because we want to find the value of x when the equations are equal to one another.

Solve:

2x + 20 = 3x

Subtract 2x on both sides:

2x + 20 = 3x

-2x           -2x

20 = x

When x is equal to 20, or when the number of miles driven is 20, the total price of the Truck Rental services is the same.

Hope this helps :)

4 0
3 years ago
Evaluate the expression when r = 3.<br> 15r
Liula [17]

Answer:

45

Step-by-step explanation:

Because if you replace the r with 3, it would be 15(3).

15(3) is the same as 15 × 3.

15 × 3 = 45

Visit fbcinterlaken.org to learn more about God, and what He can do for you!

Please Mark as brainliest it will make my day! Thank you! :)

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3 years ago
PLZ HELP ASAP!!!!<br><br><br> if pic doesn't come thru fresh the page :)
TEA [102]
The answer would be two
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UN NUMERO SE PUEDE ESCRIBIR COMO 2 POR 2 POR 3 POR 5.SI MULTIPLICAS ESTE NUMERO POR 6,¿CUAL SERA SU FACTORIZACION EN PRIMOS?¿Y S
shusha [124]

Answer:

2,880

Step-by-step explanation:

La facturación en primas sería de 2,880

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