Answer:
31.4
Step-by-step explanation:
Because you multiply the circumference by pi
Answer:
Y = .2x + 6.95
Step-by-step explanation:
x = minutes, which is being multiplied every 20 cents.
Then the 6.95 is added to number of dollars
Dont under stand put pitire so we can help u
15x = 5y divide by 3, 3x=y. I believe
Answer: the group rented 11 Person tubes and 4 cooler tubes
Step-by-step explanation:
There are two types of tubes, Person tube and cooler tube.
Let P represent number of Person tubes that the group rented.
Let C represent number of Cooler tubes that the group rented.
The group spends $270 to rent a total of 15 tubes and Person tube $20 Cooler tube $12.50. Two linear equations can be derived from the above information
P + C = 15 - - - - - - - 1
20P + 12.5C = 270 - - - -- - - 2
Substituting P = 15 - C into equation 2,
It becomes
20(15-C) + 12.5C = 270
300 - 20C + 12.5C = 270
- 20C + 12.5C = 270 -300
7.5C = - 30
C = 30/7.5 = 4
P = 15 - C
P = 15 - 4 = 11
