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dmitriy555 [2]
3 years ago
12

13 please help.......

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
4 0

To find the average, or mean of data, we add them all up, and divide by the number of data points:

-1.2 + 0.8 + 0.65 - 3.4 + 5.8

>> 2.65


2.65 / 5

>> 0.53


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3w + 7=8 need help with this
LiRa [457]
Hope this helps you out 3w+7=8

The answer is w= 1/3

Step by step:

3w+7=8
Step 1: is subtract is 7 from both sides.
3w+7-7=8-7
3w=1

Step 2: Divide both sides by 3.
3w/3 = 1/3

Your solution is:

w=1/3
6 0
3 years ago
Which is a true statement about 7 and 14?
Ksju [112]
7 and 14 can be divided in to two
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3 years ago
Can someone help me with this please? Thank you!
Finger [1]

Answer:

528 cm²

Step-by-step explanation:

First I would calculate the area of the side rectangles:

20 x 9 = 180 cm²

There are two identical rectangles on both sides so i would x2

180 x 2 = 360 cm²

The area of the middle rectangle:

6 x 20 = 120 cm²

The area of the triangles:

Area of a triangle = (Base x Height)/2

8 x 6 = 48

48 ÷ 2 = 24

There are two identical triangles on the bottom and the top so x2

24 x 2 = 48

Now add all the values up:

360 + 120 + 48 = 528 cm²

I hope this helps!

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2 years ago
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Answer:

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