Answer:
x = 45
Step-by-step explanation:
x + 45 + 2x = 180
3x + 45 = 180
3x = 135
x = 45
Answer:
Below.
Step-by-step explanation:
The difference of the f(x) values divided by the difference in the corresponding x values.
That would be (f(2) - f(-2)) / (2 - (-2))
You multiply the exponents together to get a single exponent, in this case, 15
30 degrees because it's a 30-60-90
Answer:
d. The population standard deviation is known.
Step-by-step explanation:
T-distribution or Z-distribution, which to use?
If we have the population standard deviation is known, we use the z-distribution.
Otherwise, if we only have the standard deviation for the sample, we use the t-distribution.
Which of the following is not appropriate to use the t-confidence interval for
When the population standard deviation is known, so letter d.