The mass of an electron is approximately

9.1·10 with Exponent of -31 kilograms. The mass of a proton is approximately

1.7·10 with Exponent of -27 kilograms.

Approximately how many times greater is the mass of a proton than the mass of an electron?

A

1,900

B

5,500

C

19,000

D

55,000

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

combine all like terms then its just a 2 step equation