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lorasvet [3.4K]
3 years ago
13

Solve the system of equations by substitution X=-4y X+5y=2​

Mathematics
2 answers:
MariettaO [177]3 years ago
7 0

Answer:

X=-8, y=2

Step-by-step explanation:

maw [93]3 years ago
4 0

Answer:

use -4y for x in the second equation

-4 y + 5 y = 2

so

y = 2

then x = -4(2) = -8

(-8 , 2)

Step-by-step explanation:

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Fred has 30 minutes to do a three-problem quiz. He spent 10 7/10 minutes on question a and 5 2/5 minutes on question b. How much
tatiyna

Answer:Fred has 13 9/10 minutes left for question C

Step-by-step explanation:

The total time that Fred has to do the three-problem quiz is 30 minutes.

He spent 10 7/10 minutes on question A. Converting 10 7/10 minutes to improper fraction, it becomes 107/10 minutes.

He spent 5 2/5 minutes on question B. Converting 5 2/5 minutes to improper fraction, it becomes 27/5 minutes.

Total time that Fred spent on question A and question B is

107/10 + 27/5 = (107 + 54)/10

= 161/10 minutes.

The amount of time that he has left for question C would be

30 - 161/10 = (300 - 161)/10 = 139/10

= 13 9/10 minutes

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3 years ago
How do you simplify 4^-2h^-4j^3
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Hope you could understand.

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Answer:

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Step-by-step explanation:

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Then I multiplied 0.15* 43.86        

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