Question

plz help me i really need this credit. thanx in advance:)
Find the missing term.
7^-147 × 7^98 = 7^18 × 7^-38 ×????

Answer 1

add the exponents
on left side we have
- 147 + 98 = -49

7^-49


now the right side should also be 7 ^-49

the exponents should add up to -49

Answer 2

Sorry im not quite sure what to do with the -49 but the answer choices are:
A. 7^(-20)
B. 7^22
C. 7^(-29)
D. 7^58

Answer 3

I think the answer is 7^(-20)

Answer 4

thank you welshfella i get it now

Answer 5

18 + -38 + x = -49
find x and you have the answer

Answer 6

x = -49 - 18 + 38 = ?

Answer 7

its not -20

Answer 8

I know im goiing to try to solve the equation and see what i get

Answer 9

ok

Answer 10

so its -29 then?

Answer 11

yep

Answer 12

recall when you multiply expeontial terms you ADD the exponents
eg
5^2 * 5^3 = 5^5

Answer 13

answer is 7^-29

Answer 14

yes i'll remember that. thank you so much

Answer 15

yw