Answer:
55.75 mi/hr
Step-by-step explanation:
Formula for average speed is:
Average Speed =
Total distance is 203 + 243 = 446 miles
Total time taken is 3.5 + 4.5 = 8 hours
Average Speed =
First option is correct.
Answer:
Step-by-step explanation:
a+c=300
3a+c=2100
Answer:
1. 0.1635
2. 0.0026
Step-by-step explanation:
The computation of the probability in the following cases are as follows:
1.
Given that
Mean = 25 minutes
ANd, the standard deviation is 6.1 minutes
So here the z score would be
= (31 - 25) ÷(6.1)
= 0.98
Now the probability is
= P(Z>0.98)
= 0.1635
2. the z score would be
= (8 - 25) ÷(6.1)
= -2.79
Now the probability is
= P(Z<-2.79)
= 0.0026
Answer:symmetric property
Step-by-step explanation:
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