Answer:
<em>C.</em>
Step-by-step explanation:
<em>I already used this example but...</em>
<em>Converse. Switching the hypothesis and conclusion of a conditional statement. For example, the converse of "If it is raining then the grass is wet" is "If the grass is wet then it is raining."</em>
<em> Note: As in the example, a proposition may be true but have a false converse.</em>
<em>It has to have the same meaning, but in a different format, so the only answer that follows this rule is C.</em>
<em>Hope this helps, have a good day. c;</em>
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-

Given : Sample size : n= 35 , large sample (n>30)
Mean difference : 
Standard deviation : 
Significance level : 
Critical value : 
Now, the 99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students will be :-

Hence, the 99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students = 
Answer:
Step-by-step explanation:
15s-100=350
the last one
IDK if you need this s=30
If she goes 75 mph for 2 hours, that's 150 miles altogether. 45 mph for 1 hour is 45 miles, so 150 + 45 is 195 miles.
Answer:

Step-by-step explanation:
How do we find the line that's perpendicular to another?
We find the negative reciprocal. So for example if our slope is 2, the negative reciprocal would be
.