MATHEMATICS MIDDLE SCHOOL

Point A on a number line is 12 units to the left of 0. Point B is 9 units to the right of zero. What is the distance between Point A and Point B?A) -21 units
B) -3 units
C) 3 units
D) 21 units

Answers

Answer 1
Answer: I’m pretty sure it’s 21 units

Related Questions

Please help please please !!
Michael's favorite song is 3.19 minutes long. If he listens to the song 15 times on repeat, how long will he have listened to the same song?
Solve for y:-10 + y = 28Thanks!
In the equation below, for what value of c does x = 4?3(2x + 4) = 3x - c
????????????????????????????

24. If the width of a rectangle is tripled, what will be the effect on its area?A. The area will remain the same.
B. The area will be 9 times as big.
C. The area will be 3 times as big.
D. The area will be 6 times as big.​

Answers

C.
This is due to:

W = Width, L = Length, A = Area

3W x L = 3A

Really confused with this problem. It would be great if someone could help

Answers

(2n+12) + (3n+18) = 180
⇒5n+30=180
⇒5n=150
⇒n=30


x=2n+12
  =2(30)+12
  =72°

When 40% of the girls left the school assembly, the ratio of the number of boys to girls became 3 to 4. If there were w girls when the assembly started, what was the total number of boys when the assembly started?

Answers

I am pretty sure the answer is 15 boys at the beginning of the assembly.
That would mean that there were 28 girls there, and if 40% of them left, which would mean that 8 left, leaving 20 girls. This would leave the assembly with a 3:4 ratio of boys to girls.
There were 15 boys at the beginning of the assembly and 28 girls

Risniel has 7 dogs. Danishka has 2 dogs. How many more dogs does Danishka have than Risniel?

Answers

14 beacause your multiplying 7x2 wich is 14
Danishka has less dogs, So if this question is really asking she has -5 more dogs that Risniel.

Sara solved the equation -6(x-2) + 3x = -3(x+3) + 21 What is the solution?
pls help :)

Answers

To solve you can use inverse operations.

Here are the steps to find the answer:

1. Write out the equation: -6(x-2)+3x= -3(x+3) +21

2. Distribute both sides: -6x+12+3x= -3x-9+21

3. Simplify both sides: -3x+12=-3x+12

4. This equation is true for all values, or infinity, because the equation is the same on both sides

Let me know if you need further explanation. I hope this helps.

What the the equation -984-n=-285 what does n equal

Answers

When you do this, you want to isolate one variable on one side of the equation. Add 984 to both sides, first. You get -n = 699. 
You aren't done yet because the problem isn't complete until the variable is positive. To do that, multiply both sides by -1.
The answer is n = -699.
Hope that helped you!
-984-n=-285
+n
-984=-285+n
+285
-699=n

n is equal to -699
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