Volume = area of base * height = 1/2 * 6 * 8 * 12
= 288 ft^3 answer
D, the answer is the same but in the parenthesis is reversed using the addiction something property
Answer:
The normal distribution is explained for the solution of this question.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be 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.
Mean = 25, Standard Deviation = 3.8
This means that
So
If P(X > k) = a
We have to find when Z has a pvalue of 1 - a.
If P(X < k) = a
We have to find when Z has a pvalue of a.
Answer:
x = -3 and x = 3/2
Step-by-step explanation:
2x^2 + 3x - 9 = 0
2x^2 + 6x - 3x - 9 =0
2x(x + 3) - 3(x + 3) = 0
(2x - 3)(x + 3) = 0
2x - 3 = 0; x = 3/2
x + 3 = 0; x = -3
Answer:
a) 33; b) 8; c) 145
Step-by-step explanation:
There were 29 students in band. This includes the 9 in both band and drama; this leaves 20 in only band.
There were 17 students in drama. This includes the 9 in both band and drama; this leaves 8 in only drama.
There were 70 students sampled; this means that
70-(20+8+9) = 70-37 = 33 students in neither band nor drama.
There were 8 in only drama.
Since there were 29/70 in band, this means the director can assume he will have
29/70(350) = 29/70(350/1) = 10150/350 = 145 to show up the first day.