MATHEMATICS MIDDLE SCHOOL

A system of two equations is shown below. What will you need to multiply the top equation by in order to solve this system using the elimination method?X+2y=11
6x+4y=34
A.6
B.2
C.-2
D.-4

Answers

Answer 1

Answer:

For this case we have the following system equations:

$x + 2y = 11\n6x + 4y = 34$

To use the elimination method we must multiply the first by -2. So:

$-2x-4y = -22\n6x + 4y = 34$

In this way, if we add the equations, the variable y is eliminated.

Answer:

-2

Option C

Answer 2

Answer: Both a and b can be the answer since you can eliminate a variable using both of them. The answer is below

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B.
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Answers

$(-7)/(12) = (y)/(-36)$

First, simplify $(y)/(-36)$ to $- (y)/(36)$ / Your problem should look like: $- (7)/(12) = -(y)/(36)$
Second, multiply both sides by 36. / Your problem should look like: $-21=-y$
Third, multiply both sides by -1. / Your problem should look like: $21 = y$
Fourth, switch your sides. / Your problem should look like: $y = 21$

Answer: C) 21

What is 118.380 round to the nearest hundredth

Answers

118.38 is it the abswer to it

it is 118.38 i'm not good at putting on paper good in my head

Which ordered pair is the solution to the system of equations?2x+y=-8
x-y=-4
A) (-3,-2)
B) (-1,3)
C) (1,5)
D) (-4,0)

Answers

$\left \{ {{2x+y=-8} \atop {x-y=-4}} \right. \n+----\n\n3x=-12\ \ \ \ |:3\nx=-4\n\n-4-y=-4\n-4+4=y\ny=0\n\nAnswer\ D(-4,0)$

The LCM of 12, 18, and 24 is _____.a.24
b.72
c.36
d.48

please help fast

Answers

2 x 2 x 3 = 12
2 x 3 x 3 = 18
2 x 2 x 2 x 3 = 24
2 x 2 x 2 x 3 x 3 = 72

so it would be B

Look at the shaded triangle. Describe two ways of drawing the square design below using any combination of translation , reflection ,and rotations of figure I (the shaded triangle).

Answers

The first way:
1. Reflect the figure I across the x-axis.
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The second way:
1. Reflect the figure I across the x-axis.
2. Rotate 90 degrees counterclockwise.
3. Rotate it across the y-axis.

Prime numbers between 30 and 40