Answer:
60% of 80=48
Step-by-step explanation:
60% of 80
is 75%
= 60/100 *80
=0.6*80
=48
The sum of the first five terms of the geometric series 8, -24, 72..... is 488 ⇒ answer B
Step-by-step explanation:
In the geometric series:
- There is a constant ratio " r " between each two consecutive terms
- The nth term is , where a is the 1st term
- The sum of nth terms is
∵ 8 , -24 , 72 , ........ is a geometric series
∵
∵ = 8
∵ = -24
∴
∴ r = -3
∵ The sum of the nth terms is
- We need the sum of the first 5 terms, then n is 5
∵ n = 5 , a = 8 , r = -3
- Substitute these values in the rule of the sum
∴
∴
∴
∴
∴
The sum of the first five terms of the geometric series 8, -24, 72..... is 488
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Answer:
$9,500
Step-by-step explanation:
190/.02=9,500
you do the amount of commision multiplied by the total amount of car so for this you would reverse it and devide the amount he made by the amount of commision.
Answer:
B. 4.5 mi.
Step-by-step explanation:
Let g = length of green route
b = length of blue route
(1) 6g + 5b = 52 (2) 12g + 13b = 119
Mult. (1) by -2 <u> -12g - 10b = -104</u>
<u> </u> 3b = 15
b = 5
6g + 5(5) = 52
6g + 25 = 52
6g = 27
g = 27/6 = 9/2
Well, if each book only costs 0.25, then
Sonia bought 9 books
John bought 24 books
Keisha bought 15 books
If each book costs 0.75, then
Sonia bought 3 books
John bought 8 books
Keisha bought 5 books