Answer:
Number is 19
Step-by-step explanation:
denote the number by x.
the line says:
5x - 20 = 18 + 3 x
Subtracting 3x form both sides
2x - 20 = 18
adding 20 to both sides
2x = 38
dividing both sides by 2
x = 19
Answer:
c
Step-by-step explanation:
hope it helps
Answer:
f = 
Step-by-step explanation:
multiply both sides by 4fk to eliminate the fraction
4Dfk = 1
isolate f by dividing both sides by 4Dk
f = 
B=7h-2
When h=14 b=96
a=(1/2)b*h
Therefor a=(96*14)/2
a=672cm^2