Answer:
C. 30
Step-by-step explanation:
15 men do work in 16 days
This means that 7.5 men (15/2) would do that same work in 32 days (16x2).
If the number of men increase, the amount of days decrease.
8 men would do that work in 30 days
8 men > 7.5 men
30 days < 32 days
Answer:
The price that is two standard deviations above the mean price is 4.90.
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 z-score 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 p-value, we get the probability that the value of the measure is greater than X.
Mean of 3.22 and a standard deviation of 0.84.
This means that
Find the price that is two standard deviations above the mean price.
This is X when Z = 2. So
The price that is two standard deviations above the mean price is 4.90.
Answer:
Step-by-step explanation:
-(1 3/4)x - 5
To reduce possible ambiguity, rewrite all the fractions inside parentheses:
1/2x+(−7)−2 1/4x−(−2) => (1/2)x + (−7) − (2 1/4)x − ( −2)?
Combining the x terms, we get:
-2 1/4 + (1/2)x, or - (1 3/4)x - 7 + 2.
Again combining like terms, we get the final answer
-(1 3/4)x - 5
If answer choices are given (which it seems they are here), please share them.
Answer:
1 3/4 = 7/4
(7/4) / (1/8)
(7/4) * (8/1) = 56/4 = 14
D,14
Step-by-step explanation:
Rectangular prism. I know it