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Olegator [25]
3 years ago
10

5x + 3y = -2

Mathematics
1 answer:
tamaranim1 [39]3 years ago
8 0

Answer:

x = -1 , y = 1

Step-by-step explanation:

Solve the following system:

{5 x + 3 y = -2 | (equation 1)

3 x + 2 y = -1 | (equation 2)

Subtract 3/5 × (equation 1) from equation 2:

{5 x + 3 y = -2 | (equation 1)

0 x+y/5 = 1/5 | (equation 2)

Multiply equation 2 by 5:

{5 x + 3 y = -2 | (equation 1)

0 x+y = 1 | (equation 2)

Subtract 3 × (equation 2) from equation 1:

{5 x+0 y = -5 | (equation 1)

0 x+y = 1 | (equation 2)

Divide equation 1 by 5:

{x+0 y = -1 | (equation 1)

0 x+y = 1 | (equation 2)

Collect results:

Answer: {x = -1 , y = 1

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I am thinking of two numbers. The sum of the two is 10 and the difference is 2
mixer [17]

Answer:

4 and 6

Step-by-step explanation:

First, let's find all the pairs that add up to 10.

  • 1 + 9, 2 + 8, 3 + 7, 4 + 6, and 5 + 5

Next, we find the difference between the addends for each pair.

  • 9 - 1 = 8
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  • 7 - 3 = 4
  • 6 - 4 = 2
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As you can, see the numbers that add to 10 and have a different of 2 is 4 and 6.

5 0
3 years ago
Which is the directrix of a parabola with equation X^2=8y
aleksklad [387]
Alright so, After rewriting the equation in a standard parabola, you get:
4 x 2 (y-0) =(x - 0)^2

Simplify it to get: 
y= 0-p
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When you simplify that, your answer is:
y=-2

There you go folks, just saved you from reading that long paragraph of an answer the other guy has (I don't even think the answer is in there lol, I think he just wanted to help people solve it but still most people come here for answers)
4 0
3 years ago
A family has two cars. The first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of
Vedmedyk [2.9K]

Step-by-step explanation:

685 a piece per car split

4 0
3 years ago
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dusya [7]

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3 0
3 years ago
3/5 ÷ 4/5 = ???<br> A. <br> 3/4<br> B. <br> 2/5<br> C. <br> 7/9
Ahat [919]

Answer:

Option A

Step-by-step explanation:

⅗ ÷ ⅘

⅗ × 5/4

= 3/4

<h2>HOPE IT HELPS</h2>
6 0
3 years ago
Read 2 more answers
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