Answer:
42 miles per gallon
Step-by-step explanation:
Answer:
14x²-12y²
Step-by-step explanation:
Answer:
90%
Step-by-step explanation:
50x2=100, 45x2=90, if 45/50=90/100, thats your %
Answer:
26 year old
Step by step explanation:
Five years ago, John's age was half of the age he will be in 8 years.
this means that (x-5) = (x+8)/2
-----
solving for x, we get:
2 * (x-5) = x + 8
which becomes:
2x - 10 = x + 8
which becomes:
x = 18
-----
john is 18 years old now.
5 years ago john was 13
8 years from now john will be 26
13 = 1/2 * 26