What is the period of the function Y=3/2cot[3/5x]+5
1 answer:
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The probability that a transmission will last less than 14 years is 5%
Step-by-step explanation:
Given
Mean = 16 years
SD = 1.2 years
We have to find the probability that a transmission will last less than 14 years
First of all we have to find the z-score of the value
Z-score is given by:
We will use the z-score table to find the probability of being less than 14
So,
From z-score table we get the value for -1.6666
P(z = -1.666) = 0.04846
Converting into percentage
= 0.04846* 100
= 4.846
Rounding off to nearest percentage
5%
Hence,
The probability that a transmission will last less than 14 years is 5%
Keywords: Probability, z-score
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Answer:
20 cm by 25 cm by 41 cm
Step-by-step explanation:
You are being asked to solve the cubic ...
b(2b +1)(b +5) = 20500
I find the easiest way to do that is to use a graphing calculator. By subtracting 20500 to get ...
b(2b +1)(b +5) -20500 = 0
we can look for a zero of the expression on the left. Many graphing calculators are good at showing those to high precision. Here, we find the only real zero of this equation is at b = 20.
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Filling in b=20 for the three product dimensions, we find the package size is ...
20 cm by 41 cm by 25 cm
_____
The rational root theorem tells you that any rational root will be a factor of 20500. This number has 24 divisors. Fortunately there are only 5 that are about 20 or less, so the number of them that need to be tested is minimal. (The cubic has a value greater than 20500 for b > 20.)
You can guess that the solution will be near (slightly less than) ∛(20500/2), since the factors are all near "b" after dividing the second one by 2: (b)(b+1/2)(b+5). That root is about 21.7, so b=20 is a good first guess.
