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Mumz [18]
2 years ago
8

Solve the simultaneous equations

Mathematics
1 answer:
riadik2000 [5.3K]2 years ago
3 0

Answer:

x = -2, y = 3

Step-by-step explanation:

2x + 3y = 5

5x - 2y = -16

In order to find the value of a variable, we must eliminate the other variable by multiplying the equations to get the same coefficient.

We can multiply the first equation by 5 and the second one by 2 to get the same coefficient for x, the equations then become:

10x + 15y = 25

10x - 4y = -32

Now we can subtract:

19y = 57

y = 3

Since we know the value of y, we can substitute it into one of the original equations:

2x + 3(3) = 5

2x + 9 = 5

2x = -4

x = -2

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Ne4ueva [31]
<h2>Answer:</h2>

A. 5 positive x-tiles and 6 positive unit tiles on the left side; 4 positive x-tiles and 3 negative unit tiles on the right side

<h2>Step-by-step explanation:</h2>

Left Side

5 positive x tiles: 5x

6 positive unit tiles: 6

Right Side

4 positive x tiles: 4x

3 negative unit tiles: -3

7 0
4 years ago
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Point P on the number line shows Lara's score after the first round of a quiz: A number line is shown from negative 8 to 0 to po
Luda [366]

Answer:

The correct group of answer is D) 3 + (−4) = −1, because −1 is 4 units to the left of 3

Step-by-step explanation:

Consider the provided information.

Point P on the number line shows Lara's score after the first round of a quiz:

Point P is shown on 3.

That means after the first round her total was 3.

In round two, she lost 4 points.

Therefore, she score −4 points in 2nd round

To find the total points at the end of round 2, we need to add -4 to 3.

3+(−4)=−1

Here −1 is 4 units to the left of 3.

Hence, the correct group of answer is D) 3 + (−4) = −1, because −1 is 4 units to the left of 3

3 0
4 years ago
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Solve the system of equations-2x+3y=-1 and 7x-8y=16 by combining the equations
patriot [66]

Answer:

( 40 37 , − 39 37 )

Step-by-step explanation:

7 0
3 years ago
HELP AND I WILL GIVE 20 POINTS
KatRina [158]

Answer:

p = 1

Step-by-step explanation:

Given

3p - 6 + 7 = 32 - 4(2p + 5), that is

3p + 1 = 32 - 4(2p + 5) ← distribute and simplify right side

3p + 1 = 32 - 8p - 20

3p + 1 = 12 - 8p ( add 8p to both sides )

11p + 1 = 12 ( subtract 1 from both sides )

11p = 11 ( divide both sides by 11 )

p = 1

5 0
3 years ago
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NEED HELP ASAP PLEASE I'M BEGGING YOU
Leni [432]

Answer:

:)

Step-by-step explanation:

I think the answer is 300 or over 300. Maybe even 750, I'm not really sure

4 0
3 years ago
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