Which is this? A) Angle of Elevation

B) 45-45-90 Triangle Theorem

C) Geometric Mean (Altitude) Theorem

D) 30-60-90 Triangle Theorem

E) Geometric Mean

F) Converse of The Pythagorean

G) Cosine Ration

H) Angle of depression

I) Area of the triangle

1 1/5

step-by-step explanation:

-2x-4

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true