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viva [34]
3 years ago
10

How do I simplify-3(x - 5) - 8x​

Mathematics
1 answer:
Alex73 [517]3 years ago
4 0

Step-by-step explanation:

First distribute

3(−5)−8

3−15−8

Second combine like terms

3−15−8

−5−15

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Maria runs 7 miles in 80 minutes. at the same rate, how many miles would she run in 64 minutes​
Alex777 [14]

Answer:

5.6 miles

Step-by-step explanation:

Firstly, we need to find the unit rate (the number of miles in 1 minutes).

To get this, we need to divide total miles ran (7 miles) by the total minutes taken (80 minutes). Thus, we will have MILES PER MINUTE.

7 miles ÷ 80 minutes = 7/80 miles per minute

Now,

We want number of miles in 64 minutes. Since we know "PER MINUTE", we simply multiply that with 64 to get number of miles in that amount of time.

THus,

\frac{7}{80}*64=\frac{56}{10}=5.6

So, in 64 minutes, Maria can run 5.6 miles

6 0
3 years ago
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Step-by-step explanation:

4 0
2 years ago
I am very confused on this
Alexus [3.1K]
Well first add up all the numbers of marbles (which is 34 in total) and divide it by the number of black marbles.
(which should give you 8/34)
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8 0
3 years ago
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Step-by-step explanation:

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