The mass of Mars is 6.42x10-23 kilograms. The mass of mercury is 3.3x10-23 kilograms. What is the combined mass in scientific notation.

. Let J be the mass of Jupiter and this may be expressed as,

              J = (5.8 x 10^3)(3.3 x 10^23)

The answer to the operation above is 1.914 x 10^27. In correct scientific notation, the answer would be 1.91 x 10^27 kg.

2. The same as what had been done in the previous number, let E be the mass of Earth.

                1.91 x 10^27 = (3.2 x 10^2) x E

The value of E is equal to 5.97 x 10^24. In correct scientific notation, the answer would be 6.0 x 10^24 kg. Step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

its 50 miles away from the starting point