What is –9.2(8x – 4) + 0.7(2 + 6.3x) simplified?
2 answers:
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Answer:
B. No, this distribution does not appear to be normal
Step-by-step explanation:
Hello!
To observe what shape the data takes, it is best to make a graph. For me, the best type of graph is a histogram.
The first step to take is to calculate the classmark`for each of the given temperature intervals. Each class mark will be the midpoint of each bar.
As you can see in the graphic (2nd attachment) there are no values of frequency for the interval [40-44] and the rest of the data show asymmetry skewed to the left. Just because one of the intervals doesn't have an observed frequency is enough to say that these values do not meet the requirements to have a normal distribution.
The answer is B.
I hope it helps!
Answer:
D. 4
Step-by-step explanation:
Without actually solving the equation, recall that for , there are two cases:
In the given equation , there are two pairs of absolute value symbols.
Since each has two cases, there must be a total of different equations created.
All four cases are:
Exponents differ, hence clearly there are four possible solutions to this equation.
You can solve for all four values of by taking the log of both sides and using a bit of algebra to verify you have four solutions.