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3 years ago

ANSWER ASAP I WILL MAKE BRAINLYIST

Mathematics

2 answers:

aniked [119]3 years ago

8 0

X+2y=4

+-x-4y=-14

——————

-2y=-10, y=5, x=4-10=-6

ratelena [41]3 years ago

8 0

Answer:

x = -6

y = 5

Step-by-step explanation:

Add the equations

1x + 2y = 4

-1x - 4y = -14

————————

-2y = -10

Divide both sides by -2

y = 5

Substitute for y = 5 into either equation

using 1x + 2y = 4

1x + 2(5) = 4

1x + 10 = 4

Subtract 10 from both sides

1x = -6

x = -6

Solution

x = -6

y = 5

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3 years ago

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3 years ago

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antoniya [11.8K]

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3 years ago

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3 years ago

Dustin has only nickels and quarters in his piggy bank. He has 49 coins total for a combination value of $8.85. How many of each

stepan [7]

Answer: he has 32 quarters and 17 nickels.

Step-by-step explanation:

The worth of a quarter is 25 cents. Converting to dollars, it becomes

25/100 = $0.25

The worth of a nickel is 5 cents. Converting to dollars, it becomes

5/100 = $0.05

Let x represent the number of quarters that he has in her wallet.

Let y represent the number of nickels that she has in her wallet.

He has 49 coins total. This means that

x + y = 49

the total value of the coins is $8.85. This means that

0.25x + 0.05y = 8.85 - - - - - - - - - - 1

Substituting x = 49 - y into equation 1, it becomes

0.25(49 - y) + 0.05y = 8.85

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3 years ago