How to find the mean of a data set with a missing value?

1 answer:

5 0

If you are given a mean and asked for one of the data values, you can still use the basic method for determining the mean, but work backwards. Generally we add up all the values and then divide by the number of values. In this case, working backwards, we multiply by the number of values (instead of dividing) and then subtract (instead of adding). You should be left with a data value from the set.

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Hello, can I please get help in the image below? Thank you so much!

vodomira [7]

C.
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M/7 + 1 = 6 ? What is it equal too

jasenka [17]

Answer: M= 35

The correct answer to m/7 + 1 = 6 is M = 35

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3 years ago

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Katena32 [7]

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3 years ago

Solve for p. −160=22+8(3p−4)

Aneli [31]

-160=22+8(3p-4)
Use distributive property
-160=22+24p-32
-160=24p-10
Add 10 for both side
-160+10=24p-10+10
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Divided 24 for both side
-150/24=24p/24
p=-6.25
Check:
-160=22+8(3p+4)
-160=22+8[3(-6.25)-4]
-160=22+8(-18.75-4)
-160=22+8(-22.75)
-160=22-182
-160=-160. As a result, x=-6.25. Hope it help!

3 0

3 years ago

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Lines m and n are parallel. find the value of x. A. 15 B. 20 C. 65 D. 115

torisob [31]

Answer:

Option B, x = 20

Step-by-step explanation:

Step 1: Make an equation

The values of 65 degrees and (3x + 5) are equal.

65 = 3x + 5

Step 2: Subtract 5 from both sides

65 - 5 = 3x + 5 - 5

60 = 3x

Step 3: Divide both sides by 3

60 / 3 = 3x / 3

20 = x

Answer: Option B, x = 20

6 0

3 years ago

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