12:00-9:30 = 2:30
12:30+8:30 = 8:30
2:30 + 8:30 = 11:00
11 total hours elapsed
Answer:
1/8
Step-by-step explanation:
Answer:
13 sides
Step-by-step explanation:
1980 = (n − 2)×180 Formula for number of sides
n − 2 = 1980/180 Divide both sides by 180
n - 2 = 11
+ 2 + 2 Add 2 to both sides
n = 13
Answer:
d
Step-by-step explanation:
a is incorrect because
20/32=10/16=5/8
b is incorrect because
10/7=1.42 and 7/10=0.7 which don't equal each other
c is incorrect because
4/6 equals 2/3 not 3/5
d is correct because,
18/48=15/40
