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otez555 [7]
3 years ago
7

What is the answer to 7n-2(n+5)< 3n-16

Mathematics
2 answers:
igomit [66]3 years ago
6 0
<span>7n-2(n+5)< 3n-16  / -3n-16
7n-2(n+5)-3n+16<0
5n-3n-10+16<0
2n-10+16<0
2n+6<0 / -6
2n< -6  / :2
n< -6/2
n< -3
n</span>є(-∞:-3)
tino4ka555 [31]3 years ago
4 0
7n-2(n+5)< 3n-16
7n-2n+10<3n-16      Distribute the 2 into n+5   
5n+10<3n-16          Subtract like figures
5n-3n+10<3n-3n-1  Subtract 3n from each side. (You want the variable on ONE side.)
2n+10-10<-16-10     Isolate the variable. Negative plus negative= bigger negative.
2n/2< -26/2             Negative divided by positive= smaller negative. Divide by 2 to isolate.
n<-13

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If a truck averages 12 miles to the gallon, how many pounds of carbon dioxide are emitted into the atmosphere when the truck tra
77julia77 [94]

Answer: 278.30 pounds (if the gasoline does not contain ethanol)

317.12 pounds (if the gasoline does contain ethanol)

Step-by-step explanation:

If the truck averages 12 miles per gallon, then in 170 miles it consumes:

170mi/12mi = 14.17 gallons.

We know that for one gallon consumed, the carbon dioxide emitted into the atmosphere is 19.64 pounds. (assuming it does not contain ethanol)

Then for 14.17 gallons consumed, we have a emission of:

14.17*19.64 pounds = 278.30 pounds

I the gasoline contains ethanlol, for a gallon the emiision is around  22.38 pounds.

In this case the total emission is:

14.17*22.38 pounds = 317.12 pounds

3 0
4 years ago
During the summer, you work 30 hours per week at a gas station and earn $8.75 per hour. You also work as a landscaper for $11 pe
Lena [83]
You need to work about 12.5 hours because from your gas station job, since you work 30 hours every week, times that by 8.75$ which equals 262.5$ at the end of the week, so subtract 262.5 from 400 which is 137.5, then you need to dived that by 11 since its $ per hour, after doing that you get 12.5 hours, so you would have to work 12.5 hours at your landscaper job
8 0
3 years ago
Which property is shown below?
Tpy6a [65]

Answer:

C

Step-by-step explanation:

The identity property for addition tells us that zero added to any number is the number itself.

5 0
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What exactly does skew mean?
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7 0
3 years ago
Graph the function f(x)=−13x+1.
pogonyaev

Graph each points:

f(x) = -13x + 1

when x = 0, y = 1

f(0) = -13(0) + 1

f(0) = 0 + 1

f(0) = 1

when x = 1, y = -14

f(1) = -13(1) + 1

f(1) = -13 + 1

f(1) = -14

when x = 2, y = -25

f(2) = -13(2) + 1

f(2) = -26 + 1

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etc.

Graph each point and connect them.

7 0
4 years ago
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