Will1119
31.05.2021 •
Mathematics
Reuben made $247 for 13 ours of work.
At the same rate, how many hours would he have to work to make $171 ?
pls help!!!
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Ответ:
9 hours
Step-by-step explanation:
We can use a ratio to solve
247 dollars 171 dollars
=
13 hours x hours
Using cross products
247* x = 13*171
247x =2223
Divide each side by 247
247x/247 =2223/247
x=9
Ответ:
L+W=26
L=26-W
(26-W)W=105
26W-W^2=105
0=W^2-26W+105
-105=W^2-26W
-105+169=W^2-26W+169
64= (W-13)^2
8= -(W-13) and (W-13)
8= -W+13
5=W
8= W-13
21=W
105= 5*21
5 feet x 21 feet