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zheka24 [161]
3 years ago
9

Last week, Chen bought ​ 812 ​ gallons of gas at $2.30 per gallon. This week, he bought ​ 4310 ​ gallons of gas at $2.70 per gal

lon.
What was his total cost?
Mathematics
1 answer:
allsm [11]3 years ago
5 0

Answer:

13054.6      

Step-by-step explanation:

multiply 812 by 2.30 then multiply 4310 by 2.70 then add both answers together.

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twice the sum of a number and 6 is equal to 3 times the difference of the number and 8. Find the number
Serhud [2]

In order to solve this problem, we must solve an equation.

First, we need to define our unknown.

Let's call our number "n".


So, the sum of the number and 6 is the same as saying n+6

Then we need to multiply it by 2 (since it's twice the sum)

2(n+6)

This whole thing is equal to three times of the difference of the number and 8

n-8 is equal to the difference between the number and 8, then we need to multiply it by three.

3(n-8)

now, we set both sides equal and solve

2(n+6)=3(n-8)\\2n+12=3(n-8)\\2n+12=3n-24\\12=n-24\\36=n

The number is 36

5 0
3 years ago
Select the correct answer.
nydimaria [60]

Answer:

It is CD

Step-by-step explanation:

because 300+200=500, juts times it by 3 and divide

5 0
2 years ago
Find four consecutive odd integers such that 10 more than twice the least is equal to the sum of the third and fourth.
Lady bird [3.3K]
Consecutive odd numbers are 2 apart

they are
x,x+2,x+4,x+6



10+2x=x+4+x+6
10+2x=2x+10
x=x
true
any consecutive odd integers will work

1,3,5,7 works
3,5,7,9 works
etc

6 0
3 years ago
0.0338 divided by 1.3
maxonik [38]

0.0338 divided by 1.3 equals 0.026


7 0
3 years ago
Read 2 more answers
Ali’s earnings vary directly with the number of hours he works. Suppose that he worked 10 hours yesterday and earned $130. how m
gregori [183]

Answer: He earns $169 after 13 hours

Step-by-step explanation:

To solve this we need to find out how much he earns per hour.

This can be identified using simply division.

130/10=13

He earns $13 per hour.

Now we multiply 13*13=169

He earns $169 after 13 hours

4 0
4 years ago
Read 2 more answers
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