Answer:
Step-by-step explanation:
Area of the shaded region will be "(area of rectangle) - (area of triangle)"
Area of rectangle: 8 ft * 5 ft = 40 ft^2
Area of triangle: 1/2 * 3 ft (36 in) * 2.25 ft (27 in) = = 3.375 ft^2
40 - 3.375 = 36.625 ft ^2 = 5274 in^2
Answer: you just need to do A=bh
Step-by-step explanation:
So you need to multiply the base by the height
Answer:
4.65% probability that a randomly selected customer takes more than 10 minutes
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 question, we have that:

Probability that a customer takes more than 10 minutes:
This is 1 subtracted by the pvalue of Z when X = 10. So

has a pvalue of 0.9535
1 - 0.9535 = 0.0465
4.65% probability that a randomly selected customer takes more than 10 minutes
Number of boys:
1000/2+20/2=510
Number of girls:
1000/2-20/2=490
510 boys and 490 girls competed at Special Olympics