The value of k for which the lines 5x+7y=3 and 15x + 21y = k coincide is​

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

150

step-by-step explanation:

(sorry i'm not typing it again just read the other two explanation sections i just typed it'll be the same.)

the answer to 1/4x+5/3x-4=2-1/12x is x=3

hope this if needed hmu

for nitrogen to be a liquid, its temperature must be within 12.78 °f of –333.22 °f. which equation can be used to find the maximum and minimum temperatures at which nitrogen is a liquid, x?

the equation that can be used to find the maximum and minimum temperatures is

|x +   ⇒ 333.22| =   ⇒ 12.78.