Question

Help please doing this review packet.

Answer 1

An equation is shown below:

3 over 2 multiplied by x plus 7 over 2 equals 2 to the power of x

What is the solution to the equation?

x = 1
x = 3
x = 5
x = 8

Answer 2

@Nnesha @confluxepic

Answer 3

\[\huge\rm \frac{ 3 }{ 2 } \times \frac{ x+7 }{ 2 } = x^2\]
like this ?

Answer 4

no

Answer 5

2^x not x^2

Answer 6

3/2x +7/2=2^x

Answer 7

other than that she is correct

Answer 8

according to what you wrote
it should be what @Nnesha wrote
but the right hand side should have been 2^x

Answer 9

no she is wrong this is what it is suppose to be

Answer 10

that's what you wrote in words

Answer 11

;-;

Answer 12

\[3/2x +7/2=2^x\]

Answer 13

you should have been procise

Answer 14

aww that's fine :-)

Answer 15

i did i typed it in for you

Answer 16

okay thanks :-)

Answer 17

oh didn't see it sorry :)

Answer 18

what did you do so far

Answer 19

http://prntscr.com/70ocfk for fraction

Answer 20

\[\huge\rm \frac{ 3 }{ 2x } + \frac{ 7 }{ 2 } =2^x\]

Answer 21

i would first do
\[2(\frac{3}{2x}+\frac{7}{2})=2^{x+1} \]

Answer 22

so which one do i di ? @Nnesha

Answer 23

hmm i think you just do direct subtitution of the given solutions to get the right

Answer 24

replace x=1 and see if it work and so on

Answer 25

x=1 is not a solution
since \[5\ne2\]

Answer 26

hmm find common denominator
(left side )

Answer 27

do x=3
\[4\ne8\]

Answer 28

your given solutions are not correct thus far!

Answer 29

x=5 is not either

Answer 30

all of your solution are not good
do you have other option here
or the equation you did is incorrectly written

Answer 31

logically 2^x for x>0 is always larger than the left hand side

Answer 32

no my equation is correct:
3/2x+7/2=2^x

Answer 33

@Nnesha what do you think?

Answer 34

no you didn't write it correctly i should have been\[\frac{3}{2}x+\frac{7}{2}=2^x\]
\[3x+7=2^{x+1}\]
plug in 3
\[16=16\]

Answer 35

next time be careful what you write
and be precise!

Answer 36

YOU SHOULD HAVE WRITTEN (3/2)X
TO TELL US THAT X IS NOT IN DENOMINATOR

Answer 37

O_O

Answer 38

srry geesh

Answer 39

and i did tell you like 50 times

Answer 40

hahah @Nnesha i was suspicious of the equation from the start lol
it didn't make sense
as i said above the right side is extremely larger than the left

Answer 41

\(\color{blue}{\text{Originally Posted by}}\) @Nnesha
\[\huge\rm \frac{ 3 }{ 2x } + \frac{ 7 }{ 2 } =2^x\]
\(\color{blue}{\text{End of Quote}}\)

do you know why i typed that ?
you should tell us x is not in denominator

Answer 42

you didn't tell us anything
we wrote incorrectly and you didn't say no x shouldn't be in denominator hahah
so we thought that's how you the equation is

Answer 43

i told you it was wrong and tyoed the right thing like 10 times

Answer 44

go up and look please do

Answer 45

you typed the wrong one my dear
3/2x
x for us is in denominator here
you should use parenthesis

Answer 46

ahh okay
i should wear my glasses
nd dunno abt u xapprochesinfinity

Answer 47

see may you help with a few more i have a review packet for this test and i am trying to understand this stuff @nnesha i will open up another page

Answer 48

heheh for me i don't see anywhere where you said x should not be in the bottom

Answer 49

good luck

Answer 50

have you wonder why i plugged in 3 directly?

Answer 51

educated guess o^_^o1

Answer 52

yeah well isn't it because you are trying to find the answer by plugging in numbers so that was the first one you wanted to do :D

Answer 53

hmmmm well that could be part of the reasoning
however, another reason is that we can't solve that equation with elementary methods that you learned thus far. you will need a lot of other tools to be able to tackle that equation

Answer 54

here all that concerned us was an integer solution so direct sub is useful :)

Answer 55

ok thanks do you mind helping me w. another @xapproachesinfinity

Answer 56

let's see :)

Answer 57

repost that is

Answer 58

ok