Question

i have less than 4 minutes to answeSolve the exponential equation using logarithms, rounding the answer to the nearest thousandth (3 decimal places).
2 = 7x+3 r plz help guys plz

Answer 1

3 mintues 40 secs guys

Answer 2

whoever makes it gets medal!

Answer 3

Solve 2 = 7x+3 by logs?

Answer 4

yup

Answer 5

madarahd, stay calm...I think this is not the best practice....We not run for medals I think....


apply ln in both sides

Answer 6

ln2 = ln(7x+3)

Answer 7

is it supposed to be 2=7^x+3?

Answer 8

alright thanks and yes roetee

Answer 9

ln2 = x*ln7 + ln3 is this Roetee?

Answer 10

no no

Answer 11

I saw

Answer 12

2-3 = 7^x

Answer 13

ln(-1)=x*ln(7)

Answer 14

but dont have ln of negative number

Answer 15

hmmm yeah i think jps is right how did you get negative number

Answer 16

x = ln(-1)/ln(7)

x= ln(-8)

Answer 17

negative number is not possible

Answer 18

The equation is correct?

Answer 19

2=7^x+3
log (2) = 7 * log(x) + 3
can't do addition with logs

Answer 20

i guess well see its being grade sometime tommorow probably

Answer 21

well we tried :-)

Answer 22

but you not apply log in 3 wolf1728

Answer 23

aplied*

Answer 24

I didn't take the log of 3 because you can't use logs with addition

Answer 25

the other equation
-1 = 7^x
requires log of a negative number - also impossible.

Answer 26

ill see but thanks wolf for your explantion it really helped me alot cheers!

Answer 27

thanks madarahd
of course everyone else helped too