Answer:
Step-by-step explanation:
(a) 1.56×10^4 = 1.56×10000 = 15,600
(b) There are 3600 seconds in an hour, so Andrew's time was
15600 s/(3600 s/h) = 13/3 h = 4 1/3 h
1/3 hour is 20 minutes, so Evelyn's time of 4:16 is shorter than Andrew's time of 4:20.
2x + 2y = 42
2w + q = 35
2w + v = 29
x + q + y - v = ?
x = 7
y = 14
w = 3
q = 29
v = 23
7 + 29 + 14 - 23 =
The answer is 27