Answer:
Step-by-step explanation:
first option you can try and draw aand plot them in a graph and rotate it at 180 degrees to get A(-6,8) B(-6,2) C(-2,2)
Or use the principle that when you rotate co-ordinates at 180 thye x-axis remains constant and tyhe y-axis changes its sign + to- or - to +
Answer:
180
Explanation:
20 x 9 = 180
Answer:
-2/3x+9
Step-by-step explanation:
Answer:
12x^8 hope this helps
Step-by-step explanation:
Answer:
16% probability that a randomly chosen U.S. adult sleeps more than 8.7 hours per night
Step-by-step explanation:
The Empirical Rule(Standard Deviation) 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 = 7.5
Standard deviation = 1.2
Using the Standard Deviation Rule, what is the probability that a randomly chosen U.S. adult sleeps more than 8.7 hours per night?
8.7 = 7.5 + 1.2
So 8.7 is one standard deviation above the mean.
By the Empirical Rule, 68% of the measures are within 1 standard deviation of the mean. The other 100-68 = 32% are more than one standard deviation from the mean. Since the normal probability distribution is symmetric, 16% are more than one standard deviation below the mean and 16% are more than one standard deviation above the mean(above 8.7 hours)
So, 16% probability that a randomly chosen U.S. adult sleeps more than 8.7 hours per night
