Answer:
I might be wrong but i looked it over, and I think the answer can be B
Step-by-step explanation:
I dont know for sure but i think it might be.
Answer:
4%
Step-by-step explanation:
For simple interest, the equation is I = PRT, where I is the interest, P is the principal/amount invested, R is the rate as a decimal, not percentage, and T is time in years.
641.28 = (4008)(r)(4)
641.28 = 16,032r
r = 0.04 = 4%
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
x
=
−
4
3
x
=
-
4
3
Decimal Form:
x
=
−
1.
¯
3
x
=
-
Mixed Number Form:
x
=
−
1
1
3
Let A be the amount of 100% acid.
100A+20*(6)=40*(A+6)
100A+120=40A+240
60A=120
A=2 gallons
Answer:
the paper need to be 16 inches