Tennis socks have been discounted and are only $4.79 this week. they usually cost $7.99. what percentage is the discount?

40

Step-by-step explanation:

7.99-4.79= 3.3

3.2/7.99=40

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

y = x + 95

y = 42 + 95

y=137 mm hg