3 years ago

What’s the solution to -5x-y=21 when y is equal to 6+4x

Mathematics

1 answer:

agasfer [191]3 years ago

3 0

Answer:

x= -3, y=-6

Step-by-step explanation:

In the equation -5x-y=21, substitute y for 6+4x:

-5x- (6+4x) = 21

^^Solve for x.

X should come out to -3. To find y, plug -3 into either equation (-5x-y=21 or y=6+4x) and y should equal -6.

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2 years ago

tickets sold for a concert cost $3 for kids (x) and $5 for adults (y). the total amount earned was greater than $25. write an in

Olenka [21]

3x + 5Y > 25
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4 years ago

Sup everybody so I have a question for you guys today.

Marat540 [252]

11 inches...............

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3 years ago

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I need help solving for x.

sergejj [24]

Answer:

x > -1/2.

Step-by-step explanation:

12x > 3(2x+4) - 15 First distribute the 3 over the parentheses:

12x > 6x + 12 - 15 Simplify 12 - 15:

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4 years ago

#1 Jo estimates that a piece of ribbon measures 8.5 inches. If it actually measures 7.8 inches, what is the percent error of Jo’

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Answer:

8.97 %

Step-by-step explanation:

error is 8.5 - 7.8 inches = 0.7 inches

now

x % of 7.8 = 0.7

7.8x/100 = 0.7

x = 70/7.8 %

= 8.97 %

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3 years ago

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