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Zinaida [17]
3 years ago
6

Can someone help me?

Mathematics
2 answers:
Dahasolnce [82]3 years ago
6 0
The RM = 10. Hope it helps.
Citrus2011 [14]3 years ago
3 0
If you look at the model RM is the same length as PM. PM=10 so RM=10.
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Step-by-step explanation:

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You mow the lawn to earn your allowance. Each time you mow the lawn you earn $12 Write an equation for the number of dollars, d,
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Simplify 5 over -32 squared simplified
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Find the midpoint with the endpoints (1,2) (7,2)
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I'm solving systems and I don't understand how to do it pls helpp
kaheart [24]

Answer:

Use the process of elimination. I'll only do one example since you have 4.

Step-by-step explanation:

Let's do the first question.

2x-3y=-11

2x+y=9

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X seems the easiest here. To cancel 2 (in the top equation), you need to have a -2. And that -2 needs to be the x coefficient in the 2nd equation, in order for us to "cancel" it out. To get -2, you multiply 2 by -1.

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Note that whatever you do to one side, you need to do it to both sides! Hence, why I also multiplied 9 by -1. You should now be left with:

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2x-3y= 11

+

-2x-y=-9

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-4y=-20

y=5

Now that you have the Y value, plug it into any of the two equations to find your X value.

2x-3y=11

2x-3(5)=11

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And voilah! Our Y value is 5, and our X value is 13.

It's pretty simple once you understand what's going on. All that we did was to cancel out one variable (either X or Y) in the two equations so that we're left with only one variable to solve. If we cancel out X, we only need to solve for Y. You do this by manipulating one of the two equations (doesn't matter which one). Once you find either X or Y, all you need to is to plug it into one of the original equations. Then, you'll have both X and Y.

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3 years ago
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