Answer:
Step-by-step explanation:
Original 873 New 781
The new went down by about 10.5%
873*10.5%= 91.67
873-91.67= 781.33
It decreased 10.5%
Answer:
Yes, x=3
Step-by-step explanation:
Step 1. Subtract 2x from each side
5x=2x+9
-2x -2x
Step 2. Divide both sides by 3
3x/3=9/3
x = 3
Answer:
1/5
Step-by-step explanation:
Answer:
y=-3
Step-by-step explanation:
"varying directly" means there is only a factor between x and y, i.e.:
y = k·x
so k = y/x = -1/3
so if x=9, y = -1/3·9 = -3
