Find the mean, median mode and range of: 75, 80, 60, 90, 85, 80, -7, 90, 70, 65
yaroslaw [1]
Answer:
Mean: 68.8.
Median: 77.5
Mode: 80, 90
Step-by-step explanation:
-7 + 60 + 65 + 70 + 75 + 80 + 80 + 85 + 90 + 90 = 688. Then divide by 10 because there are 10 numbers.
-7 + 60 + 65 + 70 + 75 + 80 + 80 + 85 + 90 + 90
(75, 80) are the middle numbers, so add them both, then divide by 2.
80, 90 appear more than the other numbers.
Range is highest - lowest. 90 - (-7) = 97, or it could be 83. I don't know.
19/38 and 15/18
Explanation:
19/38 can be reduced as there is a factor other than 1 that can divide without a remainder. Factor is 19
It can still be reduced because 19*2 = 38
19/38 = 1/2
10/19 cannot be reduced as there is no factor other than one to divide without a remainder
21/34 cannot be reduced as there is no factor other than one to divide without a remainder
15/18 can be reduced as there is a factor other than 1 that can divide without a remainder.
The factor is 3
15/18 = 5/6
Fraction that has not been reduced to simplest form are 19/38 and 15/18
Answer:
8d
Step-by-step explanation:
<span>sum of the number five times greater than the number, and the number of three times greater than <span>the number</span></span>
