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julsineya [31]
3 years ago
8

Solve the system by elimination 4x+3y=-5 -x+3y=-10

Mathematics
1 answer:
Sedaia [141]3 years ago
3 0

Subtract the 2nd row from the 1st row

5x = 5

Solve for x in the equation above

x = 1

Substitute x = 1 into any of the two equations above

Let's  pick the first equation; 4x + 3y = -5

4 * 1 + 3y = -5

Solve for y in the equation above

y = -3

Therefore,

<u>x = 1</u>

<u>y = -3</u>

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Lisa’s home is currently worth $150,000. When she purchased it five years ago, it was worth $180,000. Find the percent of change
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Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
1. -8(1+4x)+7x=-25-8x <br> 2. -5+6(x-7)=-40+5x<br> Could you show the work?
chubhunter [2.5K]

Answer:

1. x=1

2. x=7

Step-by-step explanation:

1. -8(1+4x)+7x=-25-8x

-8-32x+7x=-25-8x

8x-32x+7x=-25+8

-17x=-25+8

-17x=-17

\frac{-17x}{-17} =\frac{-17}{-17} \\x=1

2. -5+6(x-7)=-40+5x

-5+6x-42=-40+5x

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x=47-40

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5 0
3 years ago
What is the distance between the points (-1,2) and (2,3).
ivolga24 [154]

9514 1404 393

Answer:

  3.16 ≈ 3.2

Step-by-step explanation:

Put the numbers in the distance formula and do the arithmetic.

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((2-(-1))² +(3-2)²) = √(3² +1²) = √10

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The distance rounded to hundredths is 3.16. Rounded to tenths, it is 3.2.

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3 years ago
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rodikova [14]

Answer:

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Step-by-step explanation:

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Read 2 more answers
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