What is the density of a backpack that has the mass of 7 grams and a volume of 20 cm

0.35 g/cm³

Step-by-step explanation:

mass divided by volume, so 7 divided by 20

ρ=m/V

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: