Answer:
A.
1.125%; 0.375%
Step-by-step explanation:
Quarterly interest rate is 4.5 / 4 = 1.125%.
Monthly rate is 4.5 / 12 = 0.375%.
Answer:
B. y = 2.5
Step-by-step explanation:
Diane's average speed= 25/y km/h.
Ed's speed= (25/y) - 6 km/h.
Ed walks 25-3 = 22 km.
Consider Ed's journey:
Speed = distance / time so:
(25/y) - 6 = 22 / (y + 3) ( 3 hours longer = y + 3)
(25 /y - 6)(y + 3) = 22
25 + 75/y - 6y - 18 = 22
6y - 75/y = 25 - 18 - 22
6y - 75/y + 15 = 0
6y^2 + 15y - 75 = 0
2y^2 + 5y - 25 = 0
(2y - 5 )(y + 5) = 0
y = 2.5, -5.
y = 2.5 ( as it must be positive.
Step-by-step explanation:
g. (1/4 + 1/2) = 3/4
3/4 ÷ 3/2 = 1/2
h. (1/5 - 1/2) = 3/10
3/10 ÷ 3/5 = 1/2
I. (2/5 ÷ 5/6) = 12/25
12/25 × 7/8 = 21/50
Answer:
349.21875 %
Step-by-step explanation:
if 100 percent of a number is that number than 349.21875 percents of a number is 3 times that number with additional add ons
