Answer:
48
Step-by-step explanation:
Given that:
The interval for score = 60 - 42 = 18
If we divide it by the 3 standard deviations; the interval result into
= 18/3
= 6
So, the standard deviation is 6, and the mean = 42 + 6
= 48
When you divide two fractions, you do Keep, Change, Flip or KCF. So you keep the 3/5, you change the division sign to a multiplication sign, then flip the 3/15 to 15/3. So the new equation is 3/5x15/3. Then you simply the two sides so it becomes 1/1x3/1.....
Meaning the answer is 3.
I hope this helps you
-( 3.5+1/3) ÷ 2.4+3/4
- 16/3 ÷ 11/4
-16/3 × 4/11
- 64 / 33
- 1 31 /33
Answer:
it increase by 31%
Step-by-step explanation:
1.31-1.00=.31 move the decimal place to the left 31%
Answer:
8
Step-by-step explanation:
The 'mean' is the same as the 'average'
( 7 + x + 5 + 3 + 2) / 5 = 5
7+x+5+3+2 = 25
x = 8
