GamerGirl15
23.07.2019 •
Mathematics
Simplify the following algebraic expression -9-10[7x-3(3+10x)]
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Ответ:
= -9 - 10(7x - 9 - 30x)
= -9 - 10( -23x - 9)
= -9 + 230x + 90
= 230x + 81
230x + 81
Ответ:
11:22 AM
Step-by-step explanation:
By means of a statement we can know that:
After an hour and 8 minutes, he stays 8 minutes behind
Which means that in 2 hours, it will take 16 minutes
If it is 10:30, it means that it is 6:30 hours later, that is to say 6.5.
therefore 6.5 x 8 = 52
Which means that at 10:30 the clock is 52 minutes late
So the correct time is 11:22 AM