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WARRIOR [948]
4 years ago
7

How do you solve 5x-2y= 18 and -5x+3y= -22 by solving a system of linear equations by elimination? Please add the steps in which

you have found out the answer:)
Mathematics
1 answer:
MaRussiya [10]4 years ago
3 0
Write the 2 equations:

5x-2y=18
-5x+3y=-22

You can see that the coefficients of x are opposites, so you can add them(the 2 equations) to eliminate x.

Adding them, you get:

y=-3

So now that you know y, you can substitute the value of y into one of the original equations. Let's substitute it in the first one:

5x+6=18

Solving this, we get:

5x=12
x=12/5

x=12/5, y=-3
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7. Find the distance between the points (13, 8) and (-12, 6)
Alik [6]

9514 1404 393

Answer:

  √629 ≈ 25.08

Step-by-step explanation:

The distance formula is useful for this.

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((-12 -13)² +(6 -8)²) = √(625 +4) = √629 ≈ 25.08

The distance between the points is about 25.08 units.

3 0
3 years ago
The temperature in the core of the sun is 27,000,000 •F
AlekseyPX

Answer:

true

Step-by-step explanation:

idk what your trying to do but I guess it's true

6 0
3 years ago
What value of x satisfies this equation, 4/5 x - 6 = -2 ? Group of answer choices
andrew11 [14]

Answer:

12

Step-by-step explanation:

4/5 x -6 = -2

4 x -30 = -10

-120 = -10

12

5 0
3 years ago
john's parents deposited $1000 into a savings account as a college fund when he was born.how much will john have in this account
Nookie1986 [14]
3.25 x 18 = 58.50
1000 - 58.50 = 941.50

Answer is 941.5
6 0
4 years ago
Read 2 more answers
Original price: $150; Markdown:40%(show work please)
zepelin [54]
Original price is $150 so you times 150 by 0.40
150 x 0.40 = 60
So you take the $150 and you subtract $60 from $150
150 - 60 = 90
So the answer is $90
8 0
3 years ago
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