Question

who needs help for math (algebra 1 mainly)

Answer 1

i will

Answer 2

Welcome To Open Study......... Sir @austinisawesome12

Answer 3

how do you define 'help' for a 2.04 quiz?

Answer 4

ill send a pic

Answer 5

trying to substitute x

Answer 6

a screenshot will provide more useful than some .webarchive file extention

Answer 7

how do u screen shot on a iMac

Answer 8

lol, good question

Answer 9

thats why i did that

Answer 10

command shift 3

Answer 11

k

Answer 12

seems like command control shift 3 saves your screen to the cilpboard, which can then be pasted into an image file. but i think command shift 3 copies and saves all at once

Answer 13

it didn't do it

Answer 14

hmm, then the only other idea i have is a camera

Answer 15

OR if you can manually replicate it, then you might just want to type it all out

Answer 16

Max was solving the equation below and isn’t sure if his answer is correct. Explain to Max how he can check his answer and then help him identify any errors he made. Provide the correct solution in your explanation.

Answer 17

search that question up on open study it pops up right away

Answer 18

so this is what it looks like

Answer 19

yes
i was trying to do that

Answer 20

what is the top part of that suppose to mean?

Answer 21

i know I'm supposed to substitute x for 1

Answer 22

the top few lines are nothing but gibberish without any sort of context as to what its trying to convey.

Answer 23

all i know is they are all supposed to equall each other and when it says 28x-1 they forgot the times 4

Answer 24

thats what I'm trying to figure out to

Answer 25

are they spose to be fractions maybe? i see that they multiplied the left by 3 and the right by 4 assuming they want a common denominator of 24

Answer 26

its 3x+6 over 8

Answer 27

and the other one over 6

Answer 28

before each of those there is a 24 over 1

Answer 29

\[\frac{3x+6}{8}=\frac{7x-1}{6}\]
\[\frac{3}{3}\frac{3x+6}{8}=\frac{4}{4}\frac{7x-1}{6}\]
\[\frac{3(3x+6)}{24}=\frac{4(7x-1)}{24}\]
these are only equal if the top parts are equal so

3(3x+6) = 4(7x-1)

Answer 30

no

Answer 31

how do u use a fraction bar

Answer 32

close tho

Answer 33

lol, that an even odder question. i use it to indicate division

Answer 34

nothings over 24

Answer 35

we can modify the stuff, by multiplying each side by a useful form of '1' 3/3 = 1 and 4/4 = 1 in both instances we can get a common denominator in order to evaluate the numerators

Answer 36

there is no 3/3 or 4/4 take this away

Answer 37

the 24 is over that 1

Answer 38

then he simply multipled both sides by 24/1

Answer 39

24 (3x+6)= 24 (7x−16)
1 8 1 6

Answer 40

either way we get the same results:
\[\frac{3x+6}{8}=\frac{7x-1}{6}\]
\[\frac{24}1\frac{3x+6}{8}=\frac{24}1\frac{7x-1}{6}\]

Answer 41

yes thats it

Answer 42

and then the rest of the problem

Answer 43

in ascii, you can simply use the - key to represent a fraction

24 (3x+6) 24 (7x−16)
-- ----- = -- -------
1 8 1 6

Answer 44

im 13 and doing algebra 1 its getting hard on me in 8th grade I'm doing geometry

Answer 45

you agree that 24/8 = 3 and 24/6 = 4 ?

Answer 46

yes

Answer 47

so all that top part, as confusing as it is ... is fine.

i see a mistake after it tho, do you see it as well?

Answer 48

well i know that = 28x - 1 they forgot the times 4

Answer 49

they didn't times 4 by 1

Answer 50

right, they distributed correctly on the left side, but did not do it correctly on the right side.

c(x+y) = cx + cy

NOT

c(x+y) = cx + y

Answer 51

yes i got than

Answer 52

that*

Answer 53

but the question asks if the answer he got was correct. how do we determine the correctness of a result?

Answer 54

replace x with 1

Answer 55

yep, and after that, you might have learned something called cross multiplication.

\[\frac{a}{b}=\frac{x}{y}~\text{ if and only if }~ay=bx\]

Answer 56

yes but how do u get x by it self

Answer 57

my example was in no means meant to give any special meaning to the letter x.

but if we are to correct his mistake, how would you proceed?

Answer 58

well since i know that 1 isn't the correct anwer would i divide by each side

Answer 59

lets start here:

3(3x + 6) = 4(7x - 1)

you agree that we distribute thru the paranthesis right?

3(3x + 6) = 4(7x - 1)

3(3x) + 3(6) = 4(7x) - 4(1)

9x + 18 = 28x - 4

correct?

Answer 60

yes

Answer 61

now it would be helpful if one side had no x part at all in it. how do we remove something in math?

Answer 62

well thats what I'm having trouble on i think u divide to cancel out

Answer 63

division doesnt cancel anything out .... division lets us modify things, but it never zeros anything out.

what operation allows us to zero something out, to remove it completly.

Answer 64

if i have a pie, and divide it into 1000 pieces, i am still left with some pie. division doesnt remove something.

Answer 65

minus i am confused cause if u multiply it would just get bigger.......

Answer 66

minus is correct. subtraction is a proper name for the operation :)

lets remove 9x from the left side .... but in order to keep things equal, we would hav eto remove 9x from the right side as well, correct?

Answer 67

yes

Answer 68

9x + 18 = 28x - 4
-9x -9x
------------------
18 = 19x - 4

now that we have one side clean of all its x parts, we want to deal with the other side. do you agree that the -4 is getting in the way of a solution? how would we remove it?

Answer 69

you take -4 away from both sides of the equation

Answer 70

correct. --4 ... which is just another way to say +4 since -4+4 = 0

18 = 19x - 4
+4 + 4
------------
22 = 19x


now we are left with 19 mulitples of x on one side, and we dont want to remove the xs, we simply want to know what 1x is equal to. now we can divide.

Answer 71

divide?

Answer 72

yes, divide. you do know what division is right?

Answer 73

lol yes
just wondering what is there to divide

Answer 74

well, if we have 19x .... but only want 1x; then 19x/by something, is equal to 1x

what property do we know that allows us to make 19/? equal to 1

Answer 75

oh ok

Answer 76

if we agree that 19 divides 19 equally into parts of 1; then 19x/19 = 1x

Answer 77

yes thats right

Answer 78

if we divide one side by 19, we have to divide the other side by 19 as well so ...

22 = 19x
/19 /19
----------
22/19 = x

Answer 79

where did the 22 come from

Answer 80

you are spose to be following along ... and if anything, its the results of the last step we took :/

18 = 19x - 4
+4 + 4
------------
22 = 19x

Answer 81

oh ok yes i get it now sorry just got lost

Answer 82

:) write it all out so you can view it as a whole process :)

Answer 83

ok

Answer 84

so, now we know what an x is equal to: 22/19

Answer 85

yes

Answer 86

so thats the answer

Answer 87

that is one form of the answer. but it is accurate enough.

i see now way of reducing it, and im not sure of a mixed numeral is what they are looking for.

Answer 88

its right thats what i got the first time ii ever did this but then i thought i was wayyy off

Answer 89

http://www.wolframalpha.com/input/?i=3%283x%2B6%29%3D4%287x-1%29

the wolf likes it :)

Answer 90

how do i give u a medal

Answer 91

and why do i have a 12 next to my name

Answer 92

if you do not see a 'best response' button next to all of my posts, then you might need to refresh your browser to see it.

and im assuming you have a 12 next to your name becuase that is the username you choose.

Answer 93

there gave ya a medal

Answer 94

'mathematics' and 'ashleyhart' are the only other accounts associated with your IP address.

Answer 95

now I'm 13

Answer 96

thnx for the medal :)

well, im not 64 yet .... give me a few years lol