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3 years ago

10

I need help on number 5 please and thank you

2 answers:

valentinak56 [21]3 years ago

5 0

-4x -2y = 12
-x + 4y = 12
Multiply the first equation 2 then add to the second equation.
-8x -4y = 24
-x + 4y = 12
___________
-9x = 36
Divide both sides by-9
x = -4
Plug -4 back into either original equations and solve for y.
- -4 + 4y = 12
4 + 4y = 12
Subtract 4 from both sides
4y = 8
Divide both sides by 4
y = 2
(-4,2)

timama [110]3 years ago

4 0

X = -4

y = 2

I hope this helps. :)

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3 years ago

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Endpoint given the Midpoint: * The midpoint of RP is M(2, 4). If one of the end points is R(-1,7), find the coordinates of the o

marin [14]

Answer:

The coordinates of other point are: (5,1)

Step-by-step explanation:

Given coordinates are:

M(x,y) = (2,4)

R(x_1,x_2) = (-1,7)

We have to find the coordinates of other point (x2,y2)

The formula for mid-point is given by:

$M(x,y) = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$

Putting the values we get

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Putting respective elements equal

$\frac{-1+x_2}{2} = 2\\-1+x_2 = 2*2\\-1+x_2 = 4\\x_2 = 4+1\\x_2 = 5\\And\\\frac{7+y_2}{2} = 4\\7+y_2 = 4*2\\7+y_2 = 8\\y_2 = 8-7\\y_2 = 1$

Hence,

The coordinates of other point are: (5,1)

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3 years ago

The Jackson's dinner cost $125. They left $21.25 as a tip. What was the percentage of the tip? Please explain and help me! THANK

fiasKO [112]

Answer:

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3 years ago

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3 years ago

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fiasKO [112]

Answer:

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3 years ago