What is the other endpoint for midpoint (17,8) and endpoint (8,-5)?

midpoint = (x1+x2)/2 , (y1+y2)/2

17 = (x1+8)/2 and 8 = (y1+-5)/2

multiply each side by 2

34 = x1+8   and 16 = y1 -5

subtract 8 from each side on the left equation and add 5 to each side on the right equation

x1 = 26    y1 = 21

endpoint = (26,21)

the answer is 62.8 cubic units

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