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GWD两道数学题求助
Q5:
If(y+3)(y-1) – (y-2)(y-1) = r(y-1), what is the value of y?
(1) r2= 25
(2) r = 5
Q14:
Howmany seconds will it take for a car that is traveling at a constant rate of 45miles per hour to travel a distance of 22 yards? (1 mile = 1,160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12 |
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