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Snezhnost [94]
3 years ago
9

How do I do this its systems of equations

Mathematics
1 answer:
VLD [36.1K]3 years ago
3 0
Let x the subject of the equation in x-2y=-10 this make it x=2y-10 substitute this in the first equation. 3(2y-10)-2y=-6 solve for y, y=6. substitute y in any of the original equations to get x x= 2
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What is the slope of the line with points (-2,0) and (8,0)
Natali5045456 [20]
The answer is 10 because when you use the slope formula y^2 - y^1 divided by x^2 - x^1 and plug your points in you get 10/0 which makes the answer ten
5 0
4 years ago
2x+y=8 y=-x+5<br> Use the substitute method to solve the system of equation
Gelneren [198K]

Answer:

(3, 2 )

Step-by-step explanation:

Given the 2 equations

2x + y = 8 → (1)

y = - x + 5 → (2)

Substitute y = - x + 5 into (1)

2x - x + 5 = 8, that is

x + 5 = 8 ( subtract 5 from both sides )

x = 3

Substitute x = 3 into (2) for corresponding value of y

y = - 3 + 5 = 2

Solution is (3, 2 )

7 0
3 years ago
Work out the percentage change when a price of £70 is decreased to £49 ​
Monica [59]

Answer:

30% decrease in price

Step-by-step explanation:

Since 70-49=21, we know that the price decreased by 30 pounds. The formula to find a percentage decrease is that you should then divide the original number(70) by 21(that equals 0.3!) 0.3 as a percentage would then be 30%, so the answer is there is a 30% decrease in price.

5 0
3 years ago
Which one is the warmest and why please​
charle [14.2K]

Answer:

the warmest is wilmington

Step-by-step explanation:

it's 0 degrees and the other ones are lower so i mean it's common sense positives are greater than negatives

8 0
3 years ago
Read 2 more answers
Which of the following is the prime factorization for the number 2520?
12345 [234]

2520

= 10 * 252

= 2 * 5 * 2 * 126

= 2 * 5 * 2 * 2 * 63

= 2 * 5 * 2 * 2 * 7 * 3 * 3

= 2^3 * 3^2 * 5 * 7

7 0
4 years ago
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