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Fiesta28 [93]
3 years ago
9

-(-8n+3.9)

Mathematics
1 answer:
nataly862011 [7]3 years ago
4 0

Answer:

8n - 3.9

Step-by-step explanation:

Given

- (- 8n + 3.9 ) ← multiply each term in the parenthesis by - 1

= 8n - 3.9

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The length of a rectangle is 10 yards more than the width. If the perimeter is 68 yards, what are the length and width?
quester [9]

Divide the perimeter by 2, this will give you the sum of one length and one width.

68/2 = 34 yards

Now the length is  10 yards more, so subtract 10 from the 34 and divide by 2 again:

34 - 10 = 24

24 /2 = 12

The width is 12 yards.

The length is 12 + 10 = 22 yards.

5 0
3 years ago
What is an equivalent ratio to 8:20 and<br> 2:5?
coldgirl [10]

Answer:

4:10.

Step-by-step explanation:

4:10 would be one.

5 0
3 years ago
JK = 7x + 9<br> JL = 114, and<br> KL = 9x + 9,<br> Find KL.
VikaD [51]

Answer:

KL= 63

Step-by-step explanation:

JK=7x+9 , JL=114 , KL=9x+9 ( if the points are on the same line and point J at the end point and K in the middle)

*J_______________________K___________________________L

JL=JK+KL

114=7x+9+9x+9

114-18=16 x

16x=98

x=98/16=6

KL= 9x+9

KL=9(6)+9

KL= 63

8 0
3 years ago
Please help me!! Thank you.
avanturin [10]
The answer is a because there is not an 8 on the chart
3 0
3 years ago
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How do I graph 2d + 4p = 28
gayaneshka [121]
I hope this helps you! Have a great day! :)

7 0
2 years ago
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