Answer:
x= -20
Step-by-step explanation:
Answer: 
Step-by-step explanation:
Let
represents the standard deviation .
Given : Last year, the standard deviation of the ages of the students at UA was 1.8 years.
The researcher are interested in testing to see if there has been a significant change in the standard deviation of the ages of the students at UA.
We know that the null hypothesis always contains the equal signs, then the null and alternative hypothesis is given by :-

Answer:
210 m
Step-by-step explanation:
the largest interior angle will be the front of largest side of triangle
7 • 10^6 - 5.3 • 10^6
= 1.7 • 10^6 in scientific notation
Answer: D. 2.8 - 0.6t
Step-by-step explanation:
The t represents how much time it takes. So, it goes down by 0.6 per second until it gets to 0.