Adam plans to choose a video game from a section of the store where
everything is 75% off. he writes the expression d -0.75d to find the sale price
of the game if the original price is d dollars.
reference
rena correctly writes another expression, 0.25d, that will also find the sale price
of the game if the original price is d dollars.
calculator
use the drop-down menus to explain what each part of adam's and rena's
expressions mean.
formulas
glossary
adam's expression: d -0.75d
language
english
0.75:
0.75d:
d - 0.75d:
rena's expression: 0.25d
0.25:
d:
0.25d:

the infinity sign

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

may i see the picture? it would a lot, xox

college