Question

Can someone please help me with 77 through 82. I have no clue how to do these!

Answer 1

77.BC

Answer 2

78 D

Answer 3

79C

Answer 4

Just apply the basic logarithmic rules
Try it yourself :)

Using
\[\huge a^x=b \leftarrow \rightarrow \log_ab=x\]

Answer 5

these problems are designed to confuse.
usually \(b\) represents the base

Answer 6

ok (: is 80 b?

Answer 7

so you have to thing abstractly

Answer 8

yes

Answer 9

I love math, but these confusing things & using LOG, i hate. lol

Answer 10

oh believe me logs are your friends

Answer 11

really?

Answer 12

81 = a
82 = e ??

Answer 13

if you want to solve
\[2^x=50\] where the variable is in the exponent, you cannot do it with algebra
you need logs

Answer 14

yes and yes

Answer 15

Thanks.

Answer 16

yw, actually you did all the work yourself

Answer 17

So say it asked me to evaluate log little 4 64 how would i do that?

Answer 18

rewrite in equivalent exponential form (that was the point of the previous problems)

Answer 19

If i put another picture in a new thread, could you show/help me how to do them?

Answer 20

sure
did you get this one
\[\log_4(64)=y\]
\[4^y=64\] if you put it in that form, the answer should be obvious (more or less)

Answer 21

think about what \(\log_4(64)\) means. it is the exponent, the number you would raise 4 to to give the result of 64

Answer 22

yeah, i got that one thank you. (: what did you type to make that show up as a little 4?

Answer 23

\log_4(64)

Answer 24

enclose in tags \[

Answer 25

and \]

Answer 26

oh, ok. thank you. (: i been wondering how to do that

Answer 27

\[\LaTeX\]

Answer 28

lol