Answer:
option C 13.5%
Step-by-step explanation:
As the heights of adults is normally distributed with mean=69 and standard deviation=2.5 so, the percent of men that are between 64 and 66.5 inches tall can be calculated as
P(64<X<66.5)=P[ (64-69)/2.5<(X-μ)/σ<(66.5-69)/2.5]
P(64<X<66.5)=P(-2<Z<-1)
P(64<X<66.5)=P(-2<Z<0)-P(-1<Z<0)
P(64<X<66.5)=0.4772-0.3413=0.1359
Thus, the percent of men are between 64 and 66.5 inches tall is 13.59%.
If we round the resultant quantity then it will be rounded to 13.6% but considering the given options, option C is most appropriate.
Answer:
b
Step-by-step explanation:
Evaluate using the definition
n
= 
where n ! = n(n - 1)(n - 2)(n - 3)..... × 3 × 2 × 1
Given
9
= 
= 
= 
Cancel 6.5.4.3.2.1 on numerator and denominator, leaving
= 
= 
= 84 → b
A line perpendicular to the two parallel lines would create 8 right angles.
Answer:
line g would have the same slope as line f
Step-by-step explanation:
parallel lines always have the same slope.
Hope this helps!!! :)
The of the first multiples of 21 is 21, 42, 63, 84, 105
