Let x represent the number of liters of 50% acid Theresa puts into the mix. The the number of liters of 30% acid will be (420-x). The total amount of acid in the final solution will be ...
0.50x + 0.30(420-x) = 0.45(420)
0.20x + 126 = 189 . . . . . . . . . . . . . . . simplify
0.20x = 63 . . . . . . . . . . . . . . . . . . . . . subtract 126
x = 63/0.20 = 315 . . . . . . . . . . . . . . . liters of 50% solution
(420-x) = 420-315 = 105 . . . . . . . . . liters of 30% solution
Theresa should mix ...
105 liters of 30% solution
315 liters of 50% solution
Answer:
F
Step-by-step explanation:
Answer:
Step-by-step explanation:
We would apply the formula for determining compound interest which is expressed as
A = P(1+r/n)^nt
Where
A = total amount in the account at the end of t years
r represents the interest rate.
n represents the periodic interval at which it was compounded.
P represents the principal or initial amount borrowed
From the information given,
P = 5000
r = 9
5.5% = 5.5/100 = 0.055
Assuming they are 365 days in a year
n = 365 because it was compounded 52 times in a year.
t = 29/365 = 0.0794
Therefore,
A = 5000(1 + 0.055/365)^365 × 0.0794
A = 5000(1 + 0.00015)^29
A = 5000(1.00015)^29
A = $5022
Answers: All the expressions that are equivalent to -y -1 are A and E.
