Answer:
8 hours
Step-by-step explanation:
6x+20=68
subtract 20 from both sides
6x=48
divide 6 both sides
x=8
Answer:
x=5
Step-by-step explanation:
2x=10
Divide each side by 2
2x/2 = 10/2
x = 5
The 15-year old age group has the lower ratio (15years = 7:10. 16yr = 10:19
Answer:
Sine 3 books are for 60-
60/3
Rs20 (per book)
and 5 books for Rs 90-
90/5
Rs18 (per book)
Thus we can save 2Rs and 5 books for Rs 90 iscthe best buy
25x² - 36
25x² + 30x - 30x - 36
5x(5x) + 5x(6) - 6(5x) - 6(6)
5x(5x + 6) - 6(5x + 6)
(5x - 6)(5x + 6)
The answer is C.
