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Mathematics 21 Online
OpenStudy (anonymous):

2p(xy-3k)

OpenStudy (agent0smith):

just distribute the 2p to everything 2p(xy-3k) =

OpenStudy (agent0smith):

2p(xy-3k) = 2pxy - 2p*3k = 2pxy -6pk

OpenStudy (anonymous):

y-3=2

OpenStudy (agent0smith):

add 3 to both sides

OpenStudy (anonymous):

X-1/4=7/8

OpenStudy (agent0smith):

add 1/4 to both sides

OpenStudy (anonymous):

im confused with the fractions :(

OpenStudy (agent0smith):

change the 1/4 into 2/8

OpenStudy (anonymous):

ok

OpenStudy (agent0smith):

X-2/8=7/8 add 2/8 to both sides

OpenStudy (anonymous):

would it be 9/8

OpenStudy (agent0smith):

Yep!

OpenStudy (anonymous):

can u reduce it or no

OpenStudy (agent0smith):

No, other than to a mixed number 1 and 1/8

OpenStudy (anonymous):

ok thanks

OpenStudy (anonymous):

4x=2 2/3

OpenStudy (agent0smith):

Divide both sides by 4

OpenStudy (agent0smith):

is it\[\Large 4x = 2\frac{ 2 }{ 3 }\]

OpenStudy (anonymous):

ya

OpenStudy (agent0smith):

change 2 2/3 to 8/3 4x = 8/3 then divide both sides by 4 x=8/12 which you can reduce

OpenStudy (anonymous):

alright

OpenStudy (agent0smith):

can you reduce 8/12?

OpenStudy (anonymous):

yea

OpenStudy (anonymous):

for the equation X=14-Y, what must be true for each value of X if Y is A. greater then 14? B. equal to 14? C. less than 14?

OpenStudy (agent0smith):

A. greater then 14? X will be negative B. equal to 14? X will be zero C. less than 14? X will be positive

OpenStudy (anonymous):

true or false a stem and leaf plot can help analyze change over time? If false explain why.

OpenStudy (agent0smith):

I don't know, i'm guessing false since it just shows data at one time.

OpenStudy (anonymous):

choose an appropriate graph to display the change in profit of a company over several years, Explain your choice?

OpenStudy (agent0smith):

Um, a line graph I guess, or a bar graph, since it's easy to see how the profit has changed over time.

OpenStudy (anonymous):

An arc of a circle is a segment of a circumference of a circle. If an arc measures 16 inches and is 4/9 the circumference of a circle. What is the circumference of the circle?

OpenStudy (agent0smith):

16*9/4 = circumference

OpenStudy (anonymous):

A house has an area of 1200 square feet. The owners add on a new room that is 15 feet long and 20 feet wide. What is the area of the house now? A. write an expression to represent the area of the new room? B. write an expression to represent the total area of the house now? C. Find the area of the house now?

OpenStudy (agent0smith):

1200 + 15*20

OpenStudy (anonymous):

X(Y/Y-X)^2= -4/9 Y=2 X=-4

OpenStudy (agent0smith):

I don't know what the question is...?

OpenStudy (anonymous):

the problem is X(Y divided by Y-X)^2= -4/9

OpenStudy (agent0smith):

I don't know what you're meant to do with all this: X(Y/Y-X)^2= -4/9 Y=2 X=-4

OpenStudy (anonymous):

im confused on what 2 do i have 2 solve it

OpenStudy (agent0smith):

You can't solve it... i dunno what you're asked to do. http://www.wolframalpha.com/input/?i=X%28Y%2F%28Y-X%29%29%5E2%3D+-4%2F9+

OpenStudy (anonymous):

i got 64= -4/9 for it but i wasnt sure if it was right or not

OpenStudy (agent0smith):

I still don't know the question, but x=2 and y=-4 won't work http://www.wolframalpha.com/input/?i=evaluate+X%28Y%2F%28Y-X%29%29%5E2%3D+-4%2F9++when+X%3D2%2C+Y%3D-4

OpenStudy (anonymous):

ok what about this one l(X-Y)^3l=27 X=-1 Y=2

OpenStudy (anonymous):

what is a term of an algebraic expression?

OpenStudy (agent0smith):

A monomial - a single number, or combination of numbers and variables multiplied together

OpenStudy (anonymous):

mary is one year younger than twice Paul's age. Write an expression of Mary's age ?

OpenStudy (agent0smith):

M = 2P - 1

OpenStudy (anonymous):

miles spent $7.00 and then received a paycheck that doubled the money he had left. write an expression to represent how much money he has now?

OpenStudy (agent0smith):

P = 2(x-7)

OpenStudy (anonymous):

|dw:1389819965510:dw|

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