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Blizzard [7]
4 years ago
9

The sum of two numbers is 8, and their difference is 22

Mathematics
1 answer:
lawyer [7]4 years ago
8 0

Answer:

15, -7 x=15 y=-7

Step-by-step explanation:

x+y=8, we'll come back to this

x-y=22, move y to the other side, x=y+22

now insert the value of x =(y+22) to the other equation like so, (y+22)+y=8, simplify

2y+22=8 2y=(-14), y=(-7)

Insert the value of y into the first equation again like so, x+(-7)=8, simplify

x=15

15, -7

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3 0
3 years ago
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matrenka [14]
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3 years ago
A taxi company change $2.25 for the first 5 miles and $0.75 for each mile. If a passenger spent $6 on a trip, how many miles did
Monica [59]

Answer:

10 miles

Step-by-step explanation:

Setting up an equation where the variable 'x' = the number of miles, we can find the total mileage for the passenger's trip:

$6 = $0.75x + $2.25

$6 = the total amount of the trip

$0.75 = the cost for each mile after the initial 5 miles

$2.25 = the flat fee for the first 5 miles

Solve for 'x', subtract $2.25 from both sides: 6 - 2.25 = 0.75x + 2.25 - 2.25 or 3.75 = 0.75x

Divide by 0.75:  3.75/0.75 = 0.75x/0.75 or x = 5 miles

Since the passenger was charged in additional 5 miles, then the total mileage is 10 miles.

8 0
4 years ago
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IrinaVladis [17]

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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