Answer:
Test scores
Step-by-step explanation:
In this example, there are two variables that are being analyzed: the review session that the professor is providing and the test scores of the students. The review session is the independent variable. This is because it is the variable that we can manipulate and that we have control over. On the other hand, the test scores is the variable that <em>depends</em> on whether the students received the review session or not. This makes it the dependent variable.
This is a right triangle, the measure of angle A is 90 degrees.
First thing to do I guess is finding B and C.
tan^-1 (7/12) = 30 degrees
tan^-1 (12/7) = 60 degrees
60 + 30 = 90
180 - 90 = 90. Therefore angle A = 90 degrees
You might want to see what other people say but I think that it is 40
Your answer would be 24 and 168
take the 48 and divide by 4 to get the 1st one then just multiply 24 by 7 and you get 168
-10x-3=-10-3x
Move the constants to one side and the terms to the other, reversing the signs
-10x+3x=-10+3
7x=-7
x=-1
