+ 15 = 64 Subtract 15 from both sides
<span>
= 49 Find the square root of both sides to cancel out the </span>
x + 5 = 7 Subtract 5 from both sides
x = 2<span>
</span>
The answer is B) 3x + (-3x) = 0 has infinitely many solutions.
Answer:
a. Z-test of a population mean.
Step-by-step explanation:
The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.
This means that we have a large sample, which means that we can consider this to be the standard deviation for the population, which eliminates the t-test, leaving options a and c.
Population mean or proportion?
Mean, as a proportion is a value between 0 and 1, while average revenue may have lots of possible values. So the answer is given by option A.
Answer:
2 - n
Step-by-step explanation:
2 decreased by n means n less than 2.
