Answer:
9.5
Step-by-step explanation:
Since he did 38 miles in 4 hours, we need to divide it by 4 to find mph. 38/4 = 9.5
therefore, his speed his 9.5 mph
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4% is the answer j had it
Answer:
30 in 2
Step-by-step explanation:
What is the area of the figure below?
Answer:
68
Step-by-step explanation:
We let the random variable X denote the height of students of the college. Therefore, X is normally distributed with a mean of 175 cm and a standard deviation of 5 centimeters.
We are required to determine the percent of students who are between 170 centimeters and 180 centimeters in height.
This can be expressed as;
P(170<X<180)
This can be evaluated in Stat-Crunch using the following steps;
In stat crunch, click Stat then Calculators and select Normal
In the pop-up window that appears click Between
Input the value of the mean as 175 and that of the standard deviation as 5
Then input the values 170 and 180
click compute
Stat-Crunch returns a probability of approximately 68%
Let *s* be the length of the side of the square and *h* be the length of the side of the hexagon
s=h+5
4s=6h
multiply the fisrt equation by 4
4s=4h+20
4s=6h
4h+20=6h
20=2h
h=10
s=h+5
s=10+5
s=15