1. Find the amount after discount.
Tennis Racquet: $100 at 30% off

We know the amount of discount is $10. Therefore, mentally we know the

following:

Sale price = $100 - $10 = $90

We know the Sales Tax is 5%. We can first take 10% of 90 because all we have to

do is move the decimal point one place to the left. Therefore, 10% of 90 equals

$9. Then we divide this number in half to represent 5%. Therefore, 9/2 = $4.50.

The Sales Tax is $4.50.

Total Cost = $90 + $4.50 = $94.50 Explanations may vary.

Sale Price = $90

Sales Tax = $4.50

Total Cost = $94.50

Step-by-step explanation:

100 x 30/100 = 30

Step-by-step explanation:

Consider 30% out of 100, you can remember by the word "cent" means 100.

The first thing you need to do when coming across these types of questions is what the percent is OF and 'of' means multiplication. So you multiply your percentage by your price to get your newly number dont forget to always make the percent out of 100!

the answer is 175.4379

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