Hello there.
<span>3/5t−4−7/10t=−2
t=-20</span>
w = 37.846 mph (wind rate)
plane speed in still air: 492 mph
Well, 1x5=5 and 2x5=10 so 3x5=15
1 meter = 0.1 decameters
0.1 * 250 = 25
So she used 25 decameters of creme paper.
First, find the LCM (lowest common multiple) for denominators 14 and 6:
LCM of 14 and 6= 42
Then multiply the numerators by the same number that you multiplied each denominator to achieve the LCM:
15/42 + 7/42
Now solve! (and simplify)
15/42 + 7/42= 22/42
= 11/12
Hope this helps!
