Answer:
C. x + y = 743
x – y = 75
Step-by-step explanation:
Got it right.
Answer:
$2
Step-by-step explanation:
George borrows $2 so he owes $2.
Answer: x is 20
Step-by-step explanation:
This is ratio
a : c = b : x and d : unknown
a : c = 9 : 12 = 3 : 4 which is 9/12
b : x = 15 : x which is 15 / x
So the proportion will be :
3/4 = 15/x
So Cross multiplying
3x = 90
Divide both side by 3
x = 90/3
x = 20
Proportional: the same
6 / 36 = 0.166....
1 / 6 = 0.166...
So they are proportional.
You can also multiply/divide (depends) one of the fractions's numerator and denominator by 6 to get your answer.
6 / 36 = 6/6 / 36/6 = 1/6
1/6 = 1*6 / 6*6 = 6 / 36
