If he runs 5 kilometers in 30 minutes, at that rate he would run 10 kilometers in an hour.
so 10 kilometers per hour is his speed
Answer:
-11/20
Step-by-step explanation:

first you want to get a common denominator (number on the bottom)

now you can subtract the numerators (number on tope) (also don't touch bottom)

Answer:
no lol
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given that
sample size =n= 50
x bar = sample mean = 10.8
s = sample std deviation = 3.3
Mean difference = 50-10 = 40
Std error of sample = std dev / sqrt n=
Since population std dev is not known, we have to use t test
Test statistic t = Mean diff/std error = 
df = 39
p value = 0.0000
Since p < 0.09 our significance level, we reject our null hypothesis.
A. There is sufficient evidence to reject Upper H 0 for alpha greater than 0.09