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damaskus [11]
4 years ago
6

HURRY PLEASE!!!!!

Mathematics
1 answer:
RideAnS [48]4 years ago
7 0
First we need to find the radius of the cylindrical tree trunk if the circumference C=4 feet: C=2rπ, r=4/(2π)=2/π. Now we find the volume V: V=r^2π*h, where h=20 feet is the height. So we input the numbers: V=(2/π)^2*π*20=(4/π²)*π*20. π in the nominator and the denominator cancel out: V=(4/π)*40=80/π. The volume of the cylindrical tree trunk is V=80/π feet^3
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Makayla's car used 4 gallons to travel 148 miles. How many miles can the car go on one gallon of gas?
kirill115 [55]

Answer:

34

Step-by-step explanation:

184 divided bye 4

4 0
3 years ago
Read 2 more answers
Janice is considering two restaurants for a party. The first restaurant charges $15 per person plus a flat rate of $175 to reser
yan [13]

Answer:

The answer is 15x + 175 = 9x + 329.

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
But The aquarium charges $12 per ticket for adults and $5per ticket for children. A group of 90 children and adult chaperones vi
White raven [17]

Answer:

There were 76 childrens and 14 adults.

Step-by-step explanation:

Since the group has a total of 90 children and adults, then the sum of the number of adults with the number of children must be equal to 90 as shown below:

children + adults = 90

Since the total cost for their tickets was 548 then the number of children multiplied by the price of their ticket summed by the number of adults multiplied by the price of their ticket must be equal to that. We have:

5*children + 12*adults = 548

With these two equations we have a system of equations shown below:

children + adults = 90

5*children + 12*adults = 548

In order to solve this we will multiply the first equation by -5, and sum both equations we have:

-5*children - 5*adults = -450

5*children + 12*adults = 548

7*adults = 98

adults = 98/7 = 14

children + 14 = 90

children = 90 - 14 = 76

There were 76 childrens and 14 adults.

7 0
3 years ago
The volume of a cylinder is 252pi cm^3 and its height is 7 cm
ser-zykov [4K]

Answer:

Step-by-step explanation:

volume= (pi)(radius^2)(h)

252(pi)=(pi)(radius^2)(7)

divide both sides by pi

252=(radius^2)(7)

divide both sides by 7

36=(radius^2)

square root each side

6=radius

5 0
3 years ago
360= 90 + (3x +12) + (4y+20) + y
ella [17]

answer:

x=238/3-5/3y,y

6 0
3 years ago
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