13. # books * 2
97 * 2
A
14. 4.5 km/21 min = 7.5 km = x min
cross multiply
4.5x = 7.5(21)
4.5x = 157.5
x = 35 min
B
15. 9.60/12 = x/4
cross multiply
12x = 4(9.60)
12x = 38.40
x = 3.20
C
16. 18% move decimal two places to the left and drop the % sign
0.18
A
17. d = rt
d = 2(55)
d = 110 miles
150 - 110 = 40 miles remaining
A
Answer:
acute
Step-by-step explanation:
Answer: b=13, t=29
Step-by-step explanation:
Substituting the first equation into the second,

Answer:
1464843750
Step-by-step explanation:
an= 6*-5^12