Mathematics, 14.01.2020 06:31 netflixacc0107

How do i solve 5x+3y=-10 & 3x+5y=-6

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Solve it using elimination method:

5x+3y=-10
3x+5y=-6

Essentially what you would want to do is eliminate a variable so you have to multiply the two equations so that the two “y”s cancel each other out. You do this by multiplying one by a negative number and the other one a positive number. Doesn’t matter what number you multiply the number with; however, both numbers need to be the same distance away from zero. Also, if you’re going to multiply one term, then all the terms will need to be multiplied.

-5(5x+3y)=-10
3(3x+5y)=-6

Distribute and Multiply:
-25x-15y=50
9x+15y=-18

Now add the two equations by adding the x’s together, y’s, and the total.

The y’s end up canceling each other.

-16x=32

Divide:

X=-2

Now that you have “X” substitute x from one of the equations from the beginning. You may do two for checking answers.

3(-2)+5y=-6

-6+5y=-6

5y=0

Y=0

The answer is:
x=-2
y=0

(-2,0)

Answer from: Quest

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

Answer from: Quest

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

Identify the transformation that maps the figure with center (7, 1) onto itself. a) rotate 180° cloc

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