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I know.After doing what I did, you can then calculate total by adding up all 7 parts of venn diagram subtract from 100.

This isn’t the correct answer, Hugo.

The question is: How many dogs have not learned any tricks?

Answer this correctly and post a Venn diagram and you’ll have your points. If it’s a good quality diagram, I’ll add 10 extra points. 

The smallest 4-digit number =1,358

The largest 4-digit number    =8,531

Jackie makes =J cookies

Her sisters   =2*0.75J

J + 2*0.75J  =2.5J - Total number of cookies  made.

Jackie's percentage =J / 2.5J =1/2.5 = 40 % - Jackies's share

Fine.

Here's something to help you get started.

3 ribbons so 3 circle- venn diagram.

total is 100.

First put 32 in the intersection between blue and green, 31 in the intersection between green and white, 38 inthe intersection blue and white.

Put 16 in the center.

THere are 100-16 dogs that have not earned all three.

And you can subtract the intersect from the singles to get the single amounts.

It's useful because that's the only way you solve the question.

The chapter this is in is literally called "Venn Diagrams".

I'm giving a hint.

That's the only hint that doesn't really disclose anything really close ti the answer.

It’s helpful because Hugo can post useless bullshit and add a few points to his score that he doesn’t care about… It’s easier than answering the question.

Hugo, if you post an answer to this question by Saturday, I’ll add 20 points to your score. If not I’ll deduct 20. 

It must be your own work; no plagiarism or copying.

Set \(x \) as the original number.

Write out equations: 

\(\frac {x-5} {4} = \frac {x-4} {5}\)

Cross-multiply:

\((x-5)5=(x-4)4\)

Simplify to...

\(5x-25=4x-16\)

Solve the equation by subtracting \(4x\) from both sides:

\(x-25=-16\)

Then add \(25\) on both sides:

\(x=-16+25=9\)

So the final answer would be \(x=9\)

In right triangle ABC angle C is 90 degrees. Median AM has a length of 19 and median BN has a length of 13. What is the hypotenuse of the traingle.

wait, but a+b = 8, b+c = -3, and a+c = -5

Your answer is incorrect Jimkey17 AND there is no real value of a.

I certainly do give you credit for having a go though  

can you fix your LaTeX code? it is slightly hard to read. 

How is this helpful Hugo?  The question already says  "Venn diagram"

answered.

I am not putting in every step.  If you have any questions you can ask.

area O'AB : area O'XY : area O'DC

    10^2      :       15^2     :       20^2

      100      :         225     :        400

        1       :         2.25   :         4

let OO'=2h

Area of  O'AB = 0.5*12h= 6h

it follows that

area of  O'XY = 2.25*6h = 13.5h    and then that   area of AXYB = 13.5h-6h = 7.5h

it also follows that

area of O'DC = 4*6h = 24h   and then that           area of  XDCY = 24h-13.5h = 10.5h

so

area of AXYB : area of AXYB

       7.5           :     10.5

         5            :        7

Anyone who is interested can finish it from there   

a=3 b=5and c=-8 since we dd them all and get 0 so (a+b+c)*2=0 and 0/2=0 we do 0-8=-8 to get c,0-(-3)=3 to get a, and 0-(-5)=5 to get b.

so the product of abc=3*5*-8 and there is 1 negative number so the product is a negative number it is -(15*8)=(-120)

so a*b*c=-120

I've tried combining all of the equations together but I'm not sure if that's on the right track or not because after I get my answer it doesn't seem to make any sense.

so you start the opposite way to make the equation ((((x-10)*2-10-10)*2-10)-10)*2-10=0  we make that (((x-10)*2-10-10)*2-10)-10=5 then it becomes (((x-10)*2-10-10)*2=25 and ((x-10)*2-10-10)=12.5 which is (x-10)*2=32.5 so that is x-10=16.25 so x=26.25 and he got 26.25 gold coins when he started

@Guest

There is a value of a

i'm not sue whether to simplify it or solve x and y but when you simplify it you get 2x+2y+2z if thats not what you want then you could ask me for what you acctually want

There is actually no real value associated with a