Answer:
The answer is B
Step-by-step explanation:
S.A of pyramid = base area × 4(area of triangle)
base area = (24×24)in
= 576in²
area of triangle = (1/2)×24×12
= 144in²
S.A = 576 + 4(144)
= 1152in²
Answer:
25.14% probability that his score is at least 582.5.
Step-by-step explanation:
When the distribution is normal, we use 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 question, we have that:
If 1 of the men is randomly selected, find the probability that his score is at least 582.5.
This is 1 subtracted by the pvalue of Z when X = 582.5. So
has a pvalue of 0.7486
1 - 0.7486 = 0.2514
25.14% probability that his score is at least 582.5.
Answer: 2in
Step-by-step explanation:
Hi, to answer this question we have to apply proportions:
The correct scale on the blueprint is : 1/4 inch represents 3 feet.
So, the proportion is: 1/4 inch/ 3 feet = (1/4) /3
For 24 feet:
x inches /24 feet = x/24
So:
(1/4)/3 = x/24
Solving for x (inches)
[(1/4)/3 ] (24) =x
x =2 inches
Feel free to ask for more if needed or if you did not understand something.
Answer:
2
Step-by-step explanation:
Rise = 2
Run = 1
2/1 = 2
Answer: Area = 389.5cm^2
Explanation:
Area = 104.5cm^2
Width = 9.5cm
Find Length:
L = A/W
L = 104.5/9.5
L = 11cm
Find the enlargement:
let x be the enlargement:
9.5cm + x = 19cm
x = 19 - 9.5
x = 9.5cm
Thus, the enlargement is 9.5cm.
L (after enlarging) = 11 + 9.5 = 20.5cm
W (after enlarging) = 19cm
Find area after enlarging:
A = 20.5 x 19
A = 389.5cm^2