Answer:
By the 3rd hour,jenny must have covered 90kms
Paul covered 30kms after Jenny's 3rd hour and jenny still covered 30kms making a total of 150kms in the opposite direction. Therefore Paul needs not to cover additional hour so the answer =0hour
Step-by-step explanation:
i can't tell you the answer, but i will teach you how to get it!!
first you convert it to a fraction, then you make it a decimal divide the top number by the bottom number, then you move the decimal two places to the right --> and add a percent symbol %
Answer:
97/200
Step-by-step explanation:
48.5 % is just 48.5 * 100%, or 48.5/100
We can then simplify 48.5/100 and get rid of the decimal place:
485/1000 =
97/200
<em>I hope this helped! :)</em>
Answer:
CI = x ± 2.58 (s / √n)
Step-by-step explanation:
The confidence interval is the mean plus or minus the margin of error. The margin of error is the critical value times the standard error. For a normal distribution, the critical value is the z-score at the given confidence level. The standard error is the standard deviation divided by the square root of the sample size.
CI = x ± z (s / √n)
At 99% confidence, z = 2.58.
CI = x ± 2.58 (s / √n)
