Answer:
a=3
Step-by-step explanation:
The formula for direct proportion is
f = ka
Let f= 42 and a = 7
42 = k*7
Divide each side by 7
42/7 = k7/7
6 =k
f = 6a
Let f = 18
18 = 6a
Divide each side by 6
18/6 = 6a/6
3 =a
Answer:
1.25x + 1.5y=25
Step-by-step explanation:
let the number of lip balms that can be bought be x and the notebooks be y then their total cost is 1.25x + 1.5y. The total $25 there for the equation becomes 1.25x + 1.5y=25.
We know tht QV = 15 and TQ = TS, QV = SV;
4 x - 1 = 15
4 x = 15 + 1
4 x = 16
x = 16 : 4 = 4
After that:
TQ = 3 * 4 + 2 = 12 + 2 = 14
Answer:
C ) 14 units.
