35 =
(3.14)(r²)(2.4)
35 =
(7.536)(r²)
35 = <span>2.512 r</span>²
35 ÷ 2.512 = 14
2.512 ÷ 2.512 = 1
14 ≈ r²
√14 ≈ √r²
3.74165 ≈ r
I'd say A would be the answer!
Given:
Brown’s time for running a mile in gym class = 9.9 minutes
Ray’s time for running a mile in gym class = 9.47 minutes
Malcolm’s time for running a mile in gym class = 9.76 minutes
To find:
Who ran the mile in less time?
Solution:
It is given that the time taken by Brown, Ray and Malcolm to cover a mile are 9.9 minutes, 9.47 minutes and 9.76 minutes respectively.
9.47 < 9.76 < 9.9
Since, 9.47 minutes is the lowest time, therefore Ray can run a mile in less time.
Answer:
The answer is letter A and letter F.
Step-by-step explanation:
The question is asking if any of these choices are less than 300 centimeters. To find this out, first, you have to convert the meters to centimeters, to make it easier. (1 centimeter is equal to 0.01 meters) Multiply the meters by 100. For example 1.8m x 100 = 180cm. Do the rest for the other meters and then add them to the centimeters. Example: 180cm + 110cm = 290cm, which is less than 300cm.
Answer:
x^2-1
Step-by-step explanation:
I hope this helps.
Answer: (6.4005, 4.925)
Step-by-step explanation: n = sample size = 68
σ = population standard deviation = 0.35 hours
x = sample mean = 5.8
We are to construct a 95% confidence level for population mean.
This is given below as
Confidence interval = x ± Zα/2 × σ/√n
Where Zα/2 = critical value for a 2 tailed with 5 percent level of significance (that's α=5%) = 1.96
Note that level of significance + confidence level = 100, hence a 95% confidence level will give a 5% level of significance
For the upper limit of the 95% confidence interval, we have that
x + Zα/2 × σ/√n
5.8 +1.96(0.38/√68)
5.8 + 1.96 (0.046)
5.8 + 0.0875
= 6.4005
For the lower limit of the 95% confidence interval, we have that
x - Zα/2 × σ/√n
5.8 - 1.96(0.38/√68)
5.8 - 1.96 (0.046)
5.8 - 0.0875
=4.925
