There are ~48 questions on the PSAT for the math sections.
~
If your looking for the sum, it would be -5 :)
Answer:
Part 1) 
Part 2) 
Part 3) 
Step-by-step explanation:
step 1
Find the measure of side c
Applying the law of cosines

we have

substitute





step 2
Find the measure of angle A
Applying the law of sines

substitute the given values

solve for sin(A)



step 3
Find the measure of angle B
we know that
The sum of the interior angles in any triangle must be equal to 180 degrees
so

substitute the given values



Answer:
3c+4
Step-by-step explanation:
When distributing a problem with 2 of the same signs, all you have to do is leave it the way it is. Basically pretend it's not there at all and you should the answer