John made $122 in 8 hours.how much did he make per hour
2 answers:
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Answer:
0.0548
Step-by-step explanation:
The distribution of life span for a certain type of battery is approximately normal with mean 2.5 hours and standard deviation 0.25 hour.
To find the the probability that a selected battery will have a life span of at most 2.1 hours, we need to first determine the z-score for x=2.1 hours using
We substitute the values to get:
We read read -1.6 from the standard normal distribution table to get:
P(X≤2.1)=0.0548
The picture below shows distributive property.
Hope this helps!
Hope this helps!
Answer:
D.
Step-by-step explanation:
- The equation of the red quadratic graph is
.
- This is the parent quadratic function or the base of the quadratic functions.
- This red quadratic graph has been dilated by a certain scale factor to obtain the blue graph. Recall that, when the scale factor is a fraction, such that
the graph is stretched horizontally.
- The dilated graph then becomes wider than the parent function.
- From the given function equations, the possible value of k can only be
.
- Therefore the blue graph has equation:
- The correct answer is D.