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oksano4ka [1.4K]
3 years ago
14

I need help please

Mathematics
1 answer:
Alborosie3 years ago
4 0

Answer:

680=40m-3

Step-by-step explanation:

We know that he DOES spend $680, so we can put (680 = )

40 per month would be 40 times how many months total. Since we don't know how many months, we can use (40m)

3 months free simply means that he doesn't have to pay that price so we can take 3 months out of his total (- 3)

<em>Hope this helps!!</em>

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Step-by-step explanation:

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3 years ago
Read 2 more answers
Evaluate the expression when a= 4, b= - 2, and c= 7 - -&gt; 5a - 9 (b - c)
ollegr [7]

Answer:

65

Step-by-step explanation:

Given the following question:

5a-9(b-c)
a = 4
b = 2
c = 7

In order to find the answer, we need to substitute the variables with the numbers given, and then solve using PEMDAS.

5\times4-9\times(2-7)
2-7=-5
5\times4-9\times-5
5\times4=20
20-9\times-5
9\times-5=-45
20--45
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Hope this helps.

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2 years ago
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kvasek [131]

Answer:

14

Step-by-step explanation:

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4 0
3 years ago
How do you solve this can someone help me pls
horrorfan [7]

Answer:

x-8°+20°= 90°

=>x+12°=90°

=>x=90°-12°

=>x= 78°

5 0
3 years ago
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