Answer:
Step-by-step explanation:
9(2+1)=18+9
9(5-2)=45-18
4(1-8)=4-32
9(2=9)=18+81
Answer:
34% of lightbulb replacement requests numbering between 47 and 52
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 = 52
Standard deviation = 5
Between 47 and 52:
52 is the mean and 47 is one standard deviation below the mean.
By the Empirical Rule, 68% of the measures are within 1 standard deviation of the mean.
Since the normal distribution is symmetric, of those, 34% are within 1 standard deviation below the mean and the mean(47 and 52) and 34% are within the mean and one standard deviation above the mean(52 and 57).
So
34% of lightbulb replacement requests numbering between 47 and 52
Hey there!
Answer:
x = 195
Explanation:
So here is your equation:
90 = -105 + x
First, you simplify both sides of the equation:
90 = x - 105
Then, you will have to turn it around:
x - 105 = 90
So after you do that, you will have to Add the 105 to both sides:
x - 105 + 105 = 90 + 105
x = 195
So 195 is your answer.
Hope this helps! :D
