The diameter of Earth is appropximately 1.3 x 10 meters à meters. About how many times larger is the diameter of the
Choose the correct method to solve the problem.
Choose the correct answer (rounded to the nearest wholer
1.3 . 107
1.4 x 109

hello! just here for points! though i wish i knew!

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -