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Mathematics 18 Online
OpenStudy (anonymous):

m= 25 on my last question?

OpenStudy (amistre64):

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OpenStudy (anonymous):

plz write the full question honey ......

OpenStudy (anonymous):

3(25-m)

OpenStudy (anonymous):

m = 25?

OpenStudy (amistre64):

m can be anything it wants to be; there is no equal sign to force it into submission

OpenStudy (anonymous):

3(25-m)=0 75-3m=0 m=-75\-3 m=25

OpenStudy (anonymous):

thank u croc i always depend on u

OpenStudy (anonymous):

u are welcome

OpenStudy (amistre64):

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OpenStudy (anonymous):

OpenStudy (anonymous):

crock gets carnac award for today

OpenStudy (anonymous):

oh i smell competetion

OpenStudy (anonymous):

raw leave my man alone

OpenStudy (anonymous):

next -3/4 (8-b)

OpenStudy (amistre64):

if croc can get you to the right answers ... by all means :)

OpenStudy (anonymous):

is it right??

OpenStudy (anonymous):

ok heres another -3/4(8-b)

OpenStudy (amistre64):

if the question is: what makes this equal zero, then id say when b = 8 .... but i got know clue as to what your trying to accomplish

OpenStudy (anonymous):

apply the appropriate prperty to simplify

OpenStudy (anonymous):

property*

OpenStudy (amistre64):

ohh .... distribute would seem appropriate then :) -3(8)/4 -(-3(b)/4) = -6 +3b/4

OpenStudy (anonymous):

amistre is correct

OpenStudy (anonymous):

same applys 3(25-m)

OpenStudy (anonymous):

75-3m

OpenStudy (amistre64):

25 -m 3 ------ 75 -3m

OpenStudy (anonymous):

same applys 3+(25-m)

OpenStudy (anonymous):

rosanne it really helps to not only write the expression but also the instructions. if the expression has no equal sign, there is no "solving" just multiplying or combining like terms or something of that sort.

OpenStudy (anonymous):

so for example \[3(25-m)=75-3m\] but also \[75-3m=3(25-m)\]

OpenStudy (anonymous):

it sais apply the approate property and siplify

OpenStudy (anonymous):

well that is not your fault, but go ask your math teacher why \[75-3m\] is "simpler" than \[3(25-m)\] but if it says multiply then you have it. but you cannot then say m = something

OpenStudy (anonymous):

why am I having hard time getting this???

OpenStudy (anonymous):

because the instructions stink. what they should say is "remove the parentheses using the distributive law"

OpenStudy (anonymous):

which says that \[a(b+c)=ab+ac\]

OpenStudy (anonymous):

so if you see \[3(25-m)\] you rewrite as \[3\times 25 + 3\times -m\]

OpenStudy (anonymous):

which gives \[75-3m\]

OpenStudy (anonymous):

I have some more different instructions apply*identify the coefficients for each term-5ato the third power - 2 a

OpenStudy (anonymous):

\[-5a^3-2a\]?

OpenStudy (anonymous):

wow yeas thats it

OpenStudy (anonymous):

the coefficients are the numbers in front of the variables. the first coefficient is -5, the second one is -2

OpenStudy (anonymous):

cool now u helped me get that

OpenStudy (anonymous):

for example if i write \[2x^3-x^2+4x-6\] the coefficients in order are 2 -1 4 -6

OpenStudy (anonymous):

what about p-q

OpenStudy (anonymous):

don't forget the "-" sign comes with the coefficient.

OpenStudy (anonymous):

are you asked for the coefficients of each term?

OpenStudy (anonymous):

if so the coefficients of \[p-q\] are 1 and -1 respectively

OpenStudy (anonymous):

you visualize as \[p-q=1\times p-1\times q\]

OpenStudy (anonymous):

sorry satellite 6 is not coefficient

OpenStudy (anonymous):

?? i never wrote 6 did i?

OpenStudy (anonymous):

6g-16h-2 so it would be 6,16,-2

OpenStudy (anonymous):

careful here. the minus sign comes with it

OpenStudy (anonymous):

\[6g-16h-2\] coefficients are 6, -16, -2

OpenStudy (anonymous):

ok i get that

OpenStudy (anonymous):

don't forget the minus sign. the term \[-16h\] has coefficients -16

OpenStudy (anonymous):

combine like terms 4x +21x

OpenStudy (anonymous):

-2 not coefficient it is constant

OpenStudy (anonymous):

25x

OpenStudy (anonymous):

ok you think like this: 4 something plus 21 something is 4+21 something

OpenStudy (anonymous):

you do not need to write a step, just do it in your head. as long as the variable is the same and the exponent is the same just add them up.

OpenStudy (anonymous):

\[3x+8x=11x\] \[5y-7y=-2y\]

OpenStudy (anonymous):

25x?

OpenStudy (anonymous):

yes because 4 + 21 = 25

OpenStudy (anonymous):

remember x is a variable, it could be any number. so if it was for example 10 then you would have \[4\times 10 + 21\times 10 = 25\times 10\]

OpenStudy (anonymous):

would i write 25x?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

x is not number be careful

OpenStudy (anonymous):

wahat about this one? 13t to the second power-tto the second power + 4

OpenStudy (anonymous):

\[13t^2-4t^2+4\]? if so you get \[9t^2+4\]

OpenStudy (anonymous):

because 13-4=9

OpenStudy (anonymous):

no on the 4t just t to the second no 4

OpenStudy (anonymous):

oh so it is \[13t^2-t^2+4\]?

OpenStudy (anonymous):

in which case you will have \[12t^2+4\] since 13-1=12

OpenStudy (anonymous):

what you are doing is adding or subtracting the coefficients of the "like terms"

OpenStudy (anonymous):

so 13-1=12

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

thanx

OpenStudy (anonymous):

i want to help you any time

OpenStudy (anonymous):

help me........ hey where do you live how old r u? maybe we can do over phone

OpenStudy (anonymous):

iam from saudi arabia , iam 26 years old welcome by any way

OpenStudy (anonymous):

spent some time in al khobar. not in the army, just in a school

OpenStudy (anonymous):

is that where you live????? can you speak good english?

OpenStudy (anonymous):

yes my english is ok

OpenStudy (anonymous):

we can chat at skype\ crocodile0034

OpenStudy (anonymous):

i want to call you i think it would be easier i dont have skype

OpenStudy (anonymous):

i think it is expensive to call me from usa

OpenStudy (anonymous):

give me your number , i will give you miss call ..

OpenStudy (anonymous):

386-307-1140

OpenStudy (anonymous):

country code?

OpenStudy (anonymous):

1386

OpenStudy (anonymous):

307-1140

OpenStudy (anonymous):

if you have e mail we can chat by msn

OpenStudy (anonymous):

its not letting me dial out we can just do it here

OpenStudy (anonymous):

its not letting me dial out we can just do it here

OpenStudy (anonymous):

i sent my number b message to you , try again thanks

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