# Search:

Type: Posts; User: stapel

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1. ## Thread: Need Eqn for shop: cost \$X, sell at £Y; Y reduced by 15% & £3; should equal £Y

by stapel
Replies
1
Views
105

### Is the fifteen-percent reduction on the selling...

Is the fifteen-percent reduction on the selling price to be taken before or after the three-pound deduction? Assuming before:

If the Y-value has been reduced by fifteen percent, then what percent...
2. ## Thread: Definite Integral 0 to -1 of 1 / (1-x)^2 dx: I let u = 1 - x

by stapel
Replies
8
Views
321

### This means that the integral is actually from -1...

This means that the integral is actually from -1 to 0. ;)
3. ## Thread: Interesting Maths Problem!

by stapel
Replies
8
Views
170

### Why would we need the luck? We're not the one...

Why would we need the luck? We're not the one with the homework exercise. I see that your instructor has found a way to cause different students (or groups, if this is a group-project exercise) to...
4. ## Thread: Find Angle Of X

by stapel
Replies
3
Views
212

### Did you try following the suggested steps? If so,...

Did you try following the suggested steps? If so, what did you get? If not, what else are you doing?

Please be complete, so we can "see" where you're getting stuck. Thank you! ;)
5. ## Thread: Trigonometry: When x+y = (2 pi)/3, x,y >= 0, then max/min of sin(a)+sin(b)=?

by stapel
Replies
15
Views
1,046

What are you getting?

6. ## Thread: Does area under velocity-time graph represent total distance travelled or total displ

by stapel
Replies
2
Views
136

### Look at how the variables are defined: "v" is the...

Look at how the variables are defined: "v" is the "velocity" function, and "s" is the "displacement" function. So clearly the integral (being the area under the "velocity" line on the graph)...

by stapel
Replies
12
Views
602

### What the fudge...?!? :shock:

What the fudge...?!? :shock:
8. ## Thread: Very difficult question: Resolve x^8 + y^8 into real quadratic factors.

by stapel
Replies
7
Views
350

### This is gonna sound kinda stupid and flippant...

But I don't know the answer for this? How should i know it is factorable?[/QUOTE]
This is gonna sound kinda stupid and flippant but, while you generally would not probably look at this and...
9. ## Thread: Several numbers meet without being repeated

by stapel
Replies
1
Views
208

### You'll probably want to use some form of...

You'll probably want to use some form of combinatorics, maybe along the lines of this blog article. ;)
10. ## Thread: Find Angle Of X

by stapel
Replies
3
Views
212

### After rotation and lightening, this is the image...

After rotation and lightening, this is the image that I'm seeing:

9705

Did you perhaps mean "Find [the measure of the] Angle [a]"? Have you perhaps recently been studying parallel lines and...
11. ## Thread: Unit 4 Derivatives of Exponential and Sinusoidal Functions Task

by stapel
Replies
2
Views
225

### What did you do, based on what you saw in the...

What did you do, based on what you saw in the other thread for this exercise?

Please be complete. Thank you! ;)
12. ## Thread: Derivatives of Expo., Sinusoidal Fncs: Codeine phosphate is used as a painkiller.

by stapel
Replies
8
Views
636

### You "made a graph" of what? Have you completed...

You "made a graph" of what? Have you completed part (a)? If so, on which later part are you working?

Please be complete. Thank you! ;)

by stapel
Replies
1
Views
309

### Go to the category in question (which, in your...

Go to the category in question (which, in your case, was "Probability / Statistics"), look near the top left for the "Post New Topic" button, click the button, and post your new topic. ;)
14. ## Thread: graphical inequalities: Pick system of linear inequalities that best fits picture

by stapel
Replies
2
Views
170

The formatting of your post is difficult to read. I'm guessing that you didn't notice that your copy-n-paste from your online assessment didn't work quite right...? The below is what I think is the...
15. ## Thread: factorising quadratic equations: Given X^2 + Y^2 + Z^2 = 29, find Y for x = 2 & Z= -3

by stapel
Replies
3
Views
313

### Well, you're in "Intermediate" or "Advanced"...

Well, you're in "Intermediate" or "Advanced" algebra, so you've already taken pre-algebra and introductory (or "Beginning") algebra. Start with what you learned back then!

You have been given an...
16. ## Thread: "Easy" exponential eqn: 3^x+3^{x+1}+3^{x+2} = 5^x+5^{x+1}+5^{x+2}

by stapel
Replies
8
Views
434

### At what point did their work diverge? On what...

At what point did their work diverge? On what basis have you concluded that your different equation should have the same solution?

Please be complete, including showing their equation. Thank you!...
17. ## Thread: Calculate a discount rate (am learning share market investing)

by stapel
Replies
10
Views
777

Please reply showing your work, so we can see what's going on. For instance, I am not understanding how you're starting from "My formula", plugging "u" in for each instance of "G/D":

. . . . .V\,...
18. ## Thread: Carboard Box Optimization: Maximize size, Minimize Cost (not understanding "hint")

by stapel
Replies
1
Views
208

### I use these boxes for moving and for storage....

I use these boxes for moving and for storage. They're cheap and sturdy!

This tells us that:

. . . . .V\, =\, LHW\, =\, 1

This also tells us that we'll need to measure length, width, and...
19. ## Thread: newbie DE question: "y'' + y = o is important because it appears in physics." How?

by stapel
Replies
14
Views
923

### Who is "they"? And how do these questions relate...

Who is "they"? And how do these questions relate to the original post? Please be complete. Thank you! ;)

by stapel
Replies
13
Views
1,817

21. ## Thread: Rounding off to correct significant figure: If we add 3.46 and 2.3 we get 5.76....

by stapel
Replies
16
Views
915

### Why would a value that's almost two thousand be...

Why would a value that's almost two thousand be "rounded" (??) down to less than two hundred? Rounding involves editing place values, not removing significant digits entirely! ;)
22. ## Thread: "Easy" exponential eqn: 3^x+3^{x+1}+3^{x+2} = 5^x+5^{x+1}+5^{x+2}

by stapel
Replies
8
Views
434

Okay; in future, please don't claim to have had no idea how to get past an earlier step, if you have indeed gotten further. In all cases, please show your work.

On what basis have you concluded...
23. ## Thread: Need help with this assignment! "Use the Week 4 data set...."

by stapel
Replies
2
Views
337

### Anyone with a minimal understanding of web...

Anyone with a minimal understanding of web security is not going to open an unknown ZIP file. Regardless, so far, you have given us nothing to do. What have you tried for these questions? How far...
24. ## Thread: NY = 3*sqrt 6 OR 12? tri NYV, alt YA to NV, NA=6, AV=9; find NY

by stapel
Replies
6
Views
314

### Actually, handing out answers is (as we've...

Actually, handing out answers is (as we've learned from hard experience) NOT of great help (other than to active cheaters). Instead, please reply with a clear explanation of what you did, and your...
25. ## Thread: Solving Equations Using Rational Expressions: Simplify x/(x+3) + (9x+18)/(x^2+3x)

by stapel
Replies
5
Views
501

### You can't "multiply through" when there is no...

You can't "multiply through" when there is no "equals" sign through which to multiply! ;)
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