Requesting More Math Help [I really should just make my own board Ed.]

[tchaikovsky]

@(you need an account to see links)

In the first step illustrated by babytroop (don't know your name haha) the 4 and the twelve are cancelled out to leave just 3 on the right side of the equation. The 4 is what you're dividing the whole thing by to leave you with xyz=3x^2y^2.

[Frank12]

You stated the volume was 12(x^2)(y^2)

V = (length)(height)(Width)

solve for width

12(x^2)(y^2)= (2x)(2y)(width)

12(x^2)(y^2) = 4xy(width)

Divide everything by 4

3(x)(x)(y)(y) = xy(width) *broke apart the squares for easier understanding

Remove an x and y from both sides

3(x)(y) = width

[Maki]

You stated the volume was 12(x^2)(y^2)

V = (length)(height)(Width)

solve for width

12(x^2)(y^2)= (2x)(2y)(width)

12(x^2)(y^2) = 4xy(width)

Divide everything by 4

3(x)(x)(y)(y) = xy(width) *broke apart the squares for easier understanding

Remove an x and y from both sides

3(x)(y) = width

Love this explanation, thanks so so so so so so much!

+ repped to Graff, Frank, and tchaikovsky :p

I have another question!

A high school is starting a recycling program.
The relationship between the total cost of the program, C, and the number of recycling bins, n, is
represented by the equation C = 48n + 75.
The school must install a minimum of 12 recycling bins and has a maximum of $1000 to spend on
the program.
What are the possible values of C and n in this situation?

[Frank12]

Love this explanation, thanks so so so so so so much!

+ repped to Graff, Frank, and tchaikovsky :p

I have another question!

A high school is starting a recycling program.
The relationship between the total cost of the program, C, and the number of recycling bins, n, is
represented by the equation C = 48n + 75.
The school must install a minimum of 12 recycling bins and has a maximum of $1000 to spend on
the program.
What are the possible values of C and n in this situation?

TY.

C = 1000> or =

n = 12< or =

C = 48(n) + 75

C - 75 = 48n

C = 925 > or =

Divide both sides by 48

925 / 48 = 19.2708 ~ 19

All possible values for n = 12 through 19.

Put 12, 13, 14, 15, 16, 17, 18, 19 into the equation and solve for C.

Lowest will be 576, highest will be 987

If you need all the answers, I can do the math out.

[Maki]

TY.

C = 1000> or =

n = 12< or =

C = 48(n) + 75

C - 75 = 48n

C = 925 > or =

Divide both sides by 48

925 / 48 = 19.2708 ~ 19

All possible values for n = 12 through 19.

Put 12, 13, 14, 15, 16, 17, 18, 19 into the equation and solve for C.

Lowest will be 576, highest will be 987

If you need all the answers, I can do the math out.

Thanks! Can you give me 19-15?

[Frank12]

Thanks! Can you give me 19-15?

when n = 12 is 651
when n = 13 is 699
when n = 14 is 747
when n = 15 is 795
when n = 16 is 843
when n = 17 is 891
when n = 18 is 939
when n = 19 is 987

I apologize for the 576 in my original post, I forgot to add the 75 xD

[Maki]

@(you need an account to see links) Oh, thank you again!

I've been through 2 EQAO practice booklets, and I'm a little nervous haha I'm so sorry for bombarding you with questions.

I think I'm all set----- for today, LOL

Thanks very much xo