Answer:
22.66% of women in the United States will wear a size 6 or smaller
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
In the United States, a woman's shoe size of 6 fits feet that are 22.4 centimeters long. What percentage of women in the United States will wear a size 6 or smaller?
This is the pvalue of Z when X = 22.4. So
has a pvalue of 0.2266
22.66% of women in the United States will wear a size 6 or smaller
13. (a-b)^2=a^2-2ab+b^2
B is the answer
14. B is the answer
( x+9)(x-3)= x^2+6x-27
15. B is the answer
(x+6)(x-5)=x^2+x-30
16. D is the answer
(x-6y)(x-4y)=x^2-10xy+24y^2
17. C is the answer
(2x+5)(3x-4)=6x^2+7x-20
18. B is the answer
(5x+7)(x-2)=5x^2-3x-14
Answer:
1,177.5
Step-by-step explanation:
I have not done this is a while but the formula is v = 3.14 r^2 h
so 3.14 x 5^2 x 15
then 3.14 x 25 x 15
lastly multiply it all to get 1,177.5
Hope this helps <3
60/80, 6/8, 3/4. Hope this helps!
6 ft - 2 in
To convert ft into inches, multiply the amount of ft by 12.
6 * 12 = 72
72 in - 2 in
To find a the scale, make a ratio
72:2
This scale can also be made into 36:1 and 144:4 by simplifying
Hope this helped!