Legit answers only my future is riding on your answer amanda is adding the numbers below. what is the sum written in scientific notation? a. 81.5x10 to the -21 b. 8.15x10 to the 20 c. 81.5x10 to the 21 d. 8.15x10 to the 40

d is the correct answer

step-by-step explanation:

x= 8 because 3x = 3 * 8, and 3*8 = 24

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.

70.30

step-by-step explanation: