First, find the digit in the place you are rounding to. Look at the digit one place to the right. If the digit is less than 5, round down. If the digit is 5 or greater, round up.
For example: round 1.86 to the nearest tenth
Look at the tenth digit (8). The number to the right of it is 6. Since it’s above 5, round the 8 up to 9. So you would get 1.9.
If it was 1.84, since 4 is less than 5, you would not round the 8, and you would get 1.8
Answer:
Is
Step-by-step explanation:
Is there more information?
Answer:
The 98% confidence interval for the mean number of hours of study time per week for all students is (20.9, 25.1).
Step-by-step explanation:
Confidence interval:
Sample mean plus/minus the margin of error.
In this question:
Mean of 23.
Margin of error 2.1.
Then
23 - 2.1 = 20.9
23 + 2.1 = 25.1
The 98% confidence interval for the mean number of hours of study time per week for all students is (20.9, 25.1).
42/.15=280
So 280
You divide 42 by 15%
15 percent is .15
4) 0=-5n-2n
0=-7n
n=0
5) 6r-1+6r=11
12r-1+11
12r=12
r=1
6) r+11+8r=29
9r=18
r=2
7) -10=-14v+14v
-10=0
no solution because the sides are not equal
10) a-2+3=-2
a+1=-2
a=-3
11) 18=3(3x-6)
18=9x-18
36=9x
9x=36
x=4
hope i could help
