Ineed some on some math problems . i answered some of them so could you tell me if they are right and if not, how do i solve them to get them right? also, the ones that i haven't answered or that are incomplete, explain to me how to solve them

1. what number is 18% of 95?
my 18x95=1710
1710/100= 17.1

2. solve the percent equation for b.
not sure about that one ^

3. 132 is 12% of what number?
not completely sure on how to do that one either.

4. length of movie projected at 24 frames per second: i=24f. solve for f
i think it might be:
i=24f
f/i=24
ixf/i=24xi
f=24i

step-by-step explanation:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3