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german
3 years ago
6

Can someone help me with these? I'm a bit confused.

Mathematics
1 answer:
aivan3 [116]3 years ago
3 0

Answer:

1. -3/7

2. 5/2

3. 2/3

4. 4/5

5. -7

6. 5/4

7. (8,2)

8. (4,3/2)

9. (-8,2)

10. (-3/2,7/2)

Step-by-step explanation:

For 1-6, use the formula of y2-y1/x2-x1.

1. -2+5/0-7        -3/7

2. 0+5/-7+5        5/2

3. 3+1/1+5        4/6 or 2/3

4. -3-5/-5-5        -8/-10 or 4/5

5. 3+4/0-1        7/-1 or -7

6. 1+4/4-0        5/4

For 7-10 use the formula of x1+x2/2, y1+y2/2

7. 9+7/2 and 2+2/2        (8,2)

8. 4+4/2 and 9+-6/2        (4,3/2)

9. -6+-10/2 and -6+10/2        (-8,2)

10. 2+-5/2 and -8+1/2        (-3/2,7/2)

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1) What is 20% of 20?<br> 2) what is 15 is what percent of 30?<br> 3) 50 is 50% of what?
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Hi there!

The word "of" is the same thing as a multiplication sign.

1)

20% = 0.2

0.2 × 20 = 4


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? × 30 = 15

divide each side of the equation by 30

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50% = 0.5

0.5 × ? = 50

divide each side of the equation by 0.5

? = 100


There you go! I really hope this helped, if there's anything just let me know! :)

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