Answer:
The trains will meet in 2.4 hours.
Step-by-step explanation:
To cover 432 miles at 180mph: 432mi/180mph=2.4 hours
2a. y - y1 = m(x - x1)
m = (7-3)/(5 + 1) = 4/6 = 2/3
y1 = 7, x1 = 5
y - 7 = 2/3(x - 5)
2b. Slope intercept form: y = mx + b
y = 2/3(x -5) + 7
y = 2/3x -10/3 + 7
y = 2/3x - 10/3 + 21/3
Y = 2/3x + 11/3
Answer:
To use a paired t-test
Step-by-step explanation:
t-tests are essentially tests carried out to compare two different groups to check if there is a major difference in their performances or results which may be related in certain characteristics.
A paired (correlated) t-test is used when there are matched pair of similar units or instances of repeated measurements.
In this case, Mary has to use a paired t-test because the samples (students) have high similarity in characteristics. The students in question has to be from the same class to test her hypothesis (similar characteristics).
<span>opposite sides and _____ </span>and angles
