math

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would someone check these please

1. find the square root of 25
answer 5
2. find the median of the following set of numbers
33,72,23,27,77,68,85
answer 68
3. find the mean of the following numbers
13, 15,18,18,18,19,22,26,28,33
answer 21
4. find the mode
15,14,10,15,,16
answer 15
5. the total budget of a company is $560,000 find the amount budget in the category of miscellaneous
miscellaneous is 10%
Answer $56,000
6.add -3/8+(8/35)
answer -13/35
7. evaluate |-14|
answer 14
8. subtract -7.1-(-8.3)
answer 1.2
9. Multiply (7.6) (1)(-6)
answer -45.6
10. divide 90/18
answer 5
11.find the reciprocal of 1/3(9-4)
answer 3/5
12.perform the indicated operation
-15-(-12)/-18-(-18)

answer was undefined
13. Which of the following numbers are integers
2/11, 705, 0.033, -780,86.7
answer 705 and -780
14 place the following set of numbers in ascending order
25,-13,8,-2,13,3,18
answer -13,-2, 3,8,13,18,25
please let me know which ones i need to restudy and do thank you

The only one I see a problem with is #6.

To add or subtract. you need a common denominator, in this case 8 x 35 = 280.

-105/280 + 64/280 = -41/280

I don't see how that reduces to -13/35.

I hope this helps. Thanks for asking.

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