What is the x-intercept of the Cubic Function shown below?
2 answers:
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Let's say is "x".
so, "x" is the whole or 10/10 whilst 0.002 is 1/10 then, let's check
so, "x" is the whole or 10/10 whilst 0.002 is 1/10 then, let's check
Answer:
11.51% probability of observing an 83 degree F temperature or higher LA during a randomly chosen day in June
The coldest 10% of the days during June in LA have high temperatures of 70.6F or lower.
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 problem, we have that:
What is the probability of observing an 83 degree F temperature or higher LA during a randomly chosen day in June?
This probability is 1 subtracted by the pvalue of Z when X = 83. So
has a pvalue of 0.8849.
1 - 0.8849 = 0.1151
11.51% probability of observing an 83 degree F temperature or higher LA during a randomly chosen day in June
How cold are the coldest 10% of the days during June in LA?
High temperatures of X or lower, in which X is found when Z has a pvalue of 0.1, so whn Z = -1.28
The coldest 10% of the days during June in LA have high temperatures of 70.6F or lower.
Answer:
20 1/2 feet
Step-by-step explanation:
18 inches is 1 1/2 feet. We can add up the lengths. Remember that multiplication is used to simplify repeated addition.
rope needed = 2×(5 ft) +7×(1 1/2) ft
= 10 ft + 10 1/2 ft
= 20 1/2 ft
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<em>Comment on the solution</em>
There are many ways you can go at the solution of this. The one you choose may depend on the kind of aritmetic you're comfortable with.
Since one of the dimensions is given in inches, and the result is required in feet, at some point you need to convert from inches to feet. It is useful to know that 12 inches equal 1 foot. That tells you that you can divide the number of inches by 12 to get the number of feet. (18 inches = 18/12 feet = 3/2 feet = 1 1/2 feet)
You can add the step lengths in inches (18 inches × 7 = 126 inches = 10 1/2 feet) or in feet (1 1/2 feet × 7 = 10 1/2 feet).
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Since one of the dimensions involves a fraction of a foot, at some point you have to deal with arithmetic involving fractions. Here, we have assumed you know how to do that (this is college math, after all).
Modern calculators are quite versatile in the sorts of expressions they can evaluate. For mine, it would be convenient to write it as ...
2×5+7×(18/12) . . . . would give 20 1/2
The Google search box is also a very good calculator for a variety of problems. Its use is shown below.
