MATHEMATICS MIDDLE SCHOOL

Which would be a correct first step to solve the following system of linear equations using the elimination method? 2x+3y=6-x+3y=15

A) Add the two equations together
B) Multiply the second equation by 2
C) Write the first equation in the form y=Mx+b
D) Multiply the second equation by -3

Answers

Answer 1
Answer: B) Multiply the second equation by 2
Answer 2
Answer:

Step-by-step explanation:

2X alla seconda meno 3

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The equation of a line is y=-3x - 2. What are the slope and the y-intercept of the line?A.slope = -3 and y-intercept = 2B.slope = 3 and y-intercept = -2C.slope = 3 and y-intercept = 2D.slope = -3 and y-intercept = -2

How do you find a Mark-up or Mark-Down for retail prices? For example;Original price; $279.99, Mark-down: 75%. And can someone please show how its done? Thanks. :)

Answers

You take $279.99 x 75% then subtract what you you get from $279.99. This is is markdowns so for a mark up you add instead of subtracting.
Mark Up: Store pays $40 for shoes and sells to me for $75.calculate the markup in absolute terms 75 – 40 = 35. Narkup rate $40 (x)(40) so markup over the original price is 35 ÷ 40 = x = 0.875. It's a percentage so you need to use the decimal in the correct percentage which is 87.5%

Mark down: Original $425 marked down to $318.75. 425-318.75=106.25   ($106.25) is (some percent) of ($425) so 106.25 = (x)(425) and x = 106.25 ÷ 425 = 0.25. Use decimal to % form which is 25%

Harder than it looks…if you still don't understand let me know.

What is the solution to the equation?

4x-26-3x=16-20

Answers

solve x- 22 = 0 add 22 to both sides of the equation x = 22
and your answer is x = 22

Which is greater, 35% of 60 or 30% of 80?

Answers

35% of 60 = (35/100)*60 = 0.35 * 60 = 21

30% of 80 = (30/100)*80 = 0.30 * 80 = 24

24 is greater than 21.

30% of 80 is greater.
30%of 80=24
35%of 60=21 24is bigger so 30%of 80 is bigger

What are the similarities in the pythagorean theorem and the distance formula

Answers

Answer:

Short answer: They are essentially the same thing.

The distance formula is derived from the Pythagorean Theorem

We have distance formula:

D = √((x_1 - x_2)^2 + (y_1 - y_2)^2)

Pythagorean Theorem:

a^2+b^2=c^2 \Rightarrow c=√(a^2+b^2)

The shortest distance between two points if a line. If you draw a line in the cartesian plane both points will have an x-coordinate and y-coordinate. Note that it forms a right triangle! Therefore, the distance between those points is the hypotenuse.

We can have a point a=(x_(1), y_(1)) and point b=(x_(2), y_(2))

But once a and b can be positive or negative:

c = √(a^2+b^2)= D = √((\pm a)^2+(\pm b)^2)

Answer:

The Pythagorean theorem states that, for all 90-degree triangles, the relationship between the lengths of the sides is given by the formula a^2 + b^2 = c^2.

DISTANCE FORMULA

The study of geometry in a graphical environment is called co-ordinate geometry.

In co-ordinate geometry, the standard formula for calculating the distance between 2 points is called the distance formula.

Step-by-step explanation:

What is the difference?Express your answer in lowest terms.


-1/10 - ( -2/10 )

Answers

- (1)/(10) - (- (2)/(10) ) = (1)/(10) + (-(2)/(10)) = - (1)/(10)

Solve and graph, showing your work.Then name the solution set and draw the graph of the solution set.
y-4<-7 or y-1>6​

Answers

For the inequality y - 4 > -7, get y by itself by adding 4 to both sides. Now you have y > -3.
For the inequality y - 1 < 6, get y by itself by adding 1 to both sides. Now you have y < 7.

Graph the set y > -3 and y < 7. It should look like this:
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Hi, can you help with this problem:(-50)/2