3 years ago

Solve the system by the substitution. 8x-3y=-22 y=5x+19

Mathematics

2 answers:

kobusy [5.1K]3 years ago

8 0

The solution is (-5, -6).
I hope I helped ^ - ^

LiRa [457]3 years ago

5 0

Substitute y in 8x - 3y = -22.

8x - 3(5x + 19) = -22
Simplify.
8x - 15x - 57 = -22
Simplify.
-7x - 57 = -22
Add 57 to both sides.
-7x = 35
Divide both sides by -7.
x = -5

Substitute x in y = 5x + 19.

y = 5(-5) + 19
y = -25 + 19
y = -6

The solution is (-5, -6).

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777dan777 [17]

Answer: 55

Step-by-step explanation:

Let the number of cars washed last year be denoted as x.

This year, he washed 14 fewer cars than during last year's car wash. This will be denoted as x-14.

We can then represent them in an equation as:

x + (x - 14) = 96

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Therefore, he washed 55 cars this year

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3 years ago

A doll house uses a scale factor of 1 over 12 . The perimeter of a square room in the doll house is 36 inches . What is the leng

serious [3.7K]

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:. length of doll house= 36inches / 4
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AysviL [449]

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3 years ago

Write a recursive definition for the sequence 14, 10, 6, 2...

VladimirAG [237]

The general form of recursive definition for arithmetic sequence:
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7 0

3 years ago

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