I believe the answer is A.
Answer:
A. less than three batteries were used in five hours.
Answer:
-5
Step-by-step explanation:
or, f(x) = -x^2+10x+16
or, f(7) = (-7)^2+10*-7+16 (-7*-7=49)
=49-70+16
=65-70
=-5
Answer:
17/20
Step-by-step explanation:
85% can easily be written as 85/100 and this is true, but we have to simplify to the simplest form.
An easy way to simplify is to divide the numerator and denominator by the GCF (Greatest Common Factor)
The GCF of 85 and 100 is 5.
85 ÷ 5 = 17
100 ÷ 5 = 20
We can no longer simplify 17/20 because 17 is prime so your final answer is 17/20!
Hope you have a good day and luck in finding good memes!
Answer:
68% of an investment earning a return between 6 percent and 24 percent.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 15
Standard deviation = 9
How likely is it to earn a return between 6 percent and 24 percent?
6 = 15 - 1*9
6 is one standard deviation below the mean
24 = 15 + 1*9
24 is one standard deviation above the mean
By the empirical rule, there is a 68% of an investment earning a return between 6 percent and 24 percent.
