Answer:
12
Step-by-step explanation:
$40
40*90/100 = 36
You just have to be careful with the rest of the problem
Answer:
1/2
Step-by-step explanation:
In the straight line form...
y=mx+b
m is the constant of proportionality or the "K"
Answer:
1264 and 632
Step-by-step explanation:
x + 2x = 1896
3x=1896
x=632
Answer:
-7/45
Step-by-step explanation:
First, find the lowest common denominator for 9 and 15. It's 45. Make both fractions over 45 by multiplying the top and bottom by the same number.

Since 15*3=45, multiply the top by 3 also. Since 9*5=45, multiply the top by 5 also.

Combine the fractions
Answer in lowest terms