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Sonbull [250]
2 years ago
7

The mean of this data set is 9. What number is missing? 11,20,_,3,1

Mathematics
1 answer:
kherson [118]2 years ago
7 0
Let the missing number be x

Mean is the total sum of data over the number of data therefore,

(11+20+x+3+1) / 5 = 9
Then simplify
(35 + x) / 5 = 9
Then multiply 5 to both sides
35 + x = 45
Then subtract 35 to both sides to find x
X= 10

Hope this helps!

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Answer:

the slope of the line y=8 is 0

Step-by-step explanation:

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3 0
3 years ago
Look at photo asap please <br><br><br><br><br><br><br>​
aivan3 [116]

Answer:

option D is correct.

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3 0
3 years ago
John bought 24 pencils priced at 12 for $1.25 and 4 notebooks for $0.65 each. Which expression can john use to determine the tot
liraira [26]

Answer:

B

Step-by-step explanation:

If 12 pencils are 1.25, 24 would be 2 x 1.25. And 4 notebooks worth 0.65 would be 4 x 0.65

Added up, this expression is:

(2 x 1.25) + (4 x 0.64)

3 0
3 years ago
10 POINTS A QUESTION!
Arlecino [84]
For the first triangle the sum of angles in any given triangle is equal to 180 degrees.

The equation for the first triangle would be: 60+80+x+51= 180

Solving it we get: 191+x=180
x=-11.

The second triangle’s equation is: 90+45+52+x= 180

Solving it we get: 187+x=180
x=-7

The third triangle’s equation is: 4+7x= 90
This is because it is a right angle.

Solving it we get: 12.2 (rounding)
x=about 12.2

For the fourth triangle the equation is: 6x-5+5x=105 (we subtract 75 to 180 to get the sum of the other two angles)

Solving it we get: 11x=110
x=10.

Hope this helps! ( and if you can please give brainliest, it would mean a lot!)
6 0
3 years ago
Read 2 more answers
7w + w - 15 = 17 solve the equation. Check the solution
Rasek [7]

Answer:

Step-by-step explanation:

7w+w-15=17

8w=17+15  add like terms

8w=32 divide

w=32/8=4

now check

7*4+4-15=17

28+4-15=17

17=17

7 0
3 years ago
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