Answer: x = $25.89
Step-by-step explanation:
This is a two step problem. First we need to determine the number of gallons the car uses to drive the 250 miles:
250/28 ≈ 8.93 gallons
Then we just multiply the number of gallons by the price:
8.93 x 2.90 = $25.90
Alternate solution: Use a proportion. Since 1 gallon costs $2.90 and produces 28 miles, we can set up the following proportion:
2.90/28 = x/250
Cross-multiply and solve:
28x = 725
x = $25.89 (There is a one cent difference due to a rounding error in the first solution. This solution avoids that error.)
Answer:
26 laps
Step-by-step explanation:
Olivia : Alexis = 3 : 4
3x + 4x = 63
7x = 63
x = 9
Alexis = 4 x 9 = 36
9514 1404 393
Answer:
Step-by-step explanation:
If Anna's age is represented by A, then 12 more than Anna's age will be ...
12 + A
Jason's age is said to be 12 more than Anna's age, so ...
J = 12 + A
__
The sum of their ages will be J + A. That is said to be 50, so ...
J + A = 50
_____
These equations can be solved by using the first to substitute for J in the second.
(12 +A) +A = 50
2A = 38 . . . . . . . . subtract 12
A = 19 . . . . . . . . . . divide by 2
J = 12 +19 = 31 . . . find Jason's age
Jason is 31; Anna is 19.
Answer: Solve the inequality:
||x-4|-2|<3
Step-by-step explanation:Solve the inequality ||x-4|-2|<3
