A variable is a letter that replaces an unknown number.
Answer:
44
Step-by-step explanation:
36/9 * 11 will get the answer
9/11 * x = 36
x = 44
(multiplied each side by 11/9 to cancel out fraction)
First we rearrange to make x = a number
9x + 27 = 27 <- subtract 27 from both sides
9x = 0
When x ='s a number there is 1 solution.
The answer is 1 solution.
Here are some examples to distinguish how many solutions something has:
> No solution, 0 = 12
> One solution, Y = 6
> Infinite solutions, 0 = 0
Please give me brainliest answer if I helped!
Answer:
(6.2, 8.8)
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 7.5 hours
Standard deviation = 1.3 hours
About 68% of adults:
Within 1 standard deviation of the mean. So
7.5 - 1.3 = 6.2 hours
7.5 + 1.3 = 8.8 hours.
So the answer is (6.2, 8.8).
