amayaroberson3476
20.09.2019 •
Mathematics
What expression is equivalent to 3(-2x - 1)
a. x+2
b.x-1
c. -6x-3
d. -6x-1
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Ответ:
when you have a binomial being multiplied by a single number, you multiply both terms in the binomial by said number to get your answer. 3*-2x = -6x and 3*-1 = -3. Therefore, your answer is -6x-3
Ответ:
3(-2x) - 3(1)
-6x - 3
The expression that is equivalent to 3(-2x - 1) is the answer C. -6x - 3.
Ответ:
m(h)=5h
that is marcia's number of candles where she makes 5 candles per hour (h)
kevin makes 4 but already did 7 so
k(h)=4h+7
when will they have same number of candles?
when will m(h)=k(h)
set equal
5h=4h+7
minus 4h from both sides
1h=7
answer is 7 hours
system of equation is
m=5h
k=4h+7
find what value of h makes m=k true
answer is 7 hours