Here are the masses of the so called inner planets of the solar system. Mercury: 3.3022 x 10^23 kg
Venus:4.8685 x 10^24 kg
Earth: 5.9722 x 10^24 kg
Mars:6.4185 x 10^23 kg

What is the average mass of all four inner planets? Write your answer in scientific notation.

no he doesnt because "-16' is negatiive

step-by-step explanation:

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

-81 -56 -27 0 81

step-by-step explanation: