Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 Help Me ! » Statistics » 2006-10-22 12:01:32

stormswimmer
Replies: 1

Can Someone HELP!!!!

the average score for a standized test is 500 with a standard deviation of 100. If each score is increaced by 25, what is the new mean and standard deviation

#2 Help Me ! » Precalc » 2006-08-15 12:37:18

stormswimmer
Replies: 2

I am having trouble with this word problem. I have read it over many times and am very confused. Can someone please help me?   

The production cost of a job depends in part on the accuracy required. On most sheet metal jobs, an accuracy of 1,2, or 0.1 mils is required. A mil is  (1/1000), (2/1000), or (1/10,000) inch larger or smaller than the blueprint states. Industrial jobs often require a higher degree of accuracy.

a. Write inequalities that moels the possible dimensions of a part that is supposed to be 8 inches by 4.25 inches if the accuracy required is 2 mils.

b. Graph the region that shows the satifactory dimensions for the part.

I appreicate any help you can give me

#3 Help Me ! » Math Final » 2006-05-17 10:03:53

stormswimmer
Replies: 3

I am studying for my Math final and i have trouble with this one type of problem. For Instance
Click on the Image to make it bigger

#4 Help Me ! » Help Please » 2006-05-14 11:28:10

stormswimmer
Replies: 3

Can anyone help me with Boolean Algebra
((A+B)B')+AB
Does anyone understand this
or this
Find all ordered pairs (A, B) that satisfy the following expression: (A + B)' ((AB)')

#5 Re: Help Me ! » Irregular Polygons » 2006-02-19 10:15:03

I was given this formula 
1 / 2 (x0 * y1 + x1 * y2 + ... + xn-1 * y0 - y0 * x1 - y1 * x2 - ... - yn-1 * x0)
but it wasn't complete can anyone explain this to me

#6 Help Me ! » Irregular Polygons » 2006-02-19 05:26:53

stormswimmer
Replies: 5

How do you calculate the the area and perimeter of an irregular polygon knowing the length of sides

#7 Re: Help Me ! » Just a simple problem? » 2006-01-28 02:44:44

I am looking for how quickly can the tank be completely drained.

Maybe this would help
The velocity = 8.02 times the square root of the fluid level (in feet) remaining in the tank

The amount of fluid drained through the hole (in one second) is velocity multiplied by the area of hole.

#8 Help Me ! » Just a simple problem? » 2006-01-27 15:34:05

stormswimmer
Replies: 4

Can anyone help with this one.

You want to drill a hole in the tank that will take the most time to drain, and then drill a hole in the tank that will take the second most time to drain.

Tank Height is 20 feet, tank diameter is 8 feet, hole diameter of 2 inches. It takes 42 minutes and 45 seconds to drain the tank.

If someone could just help me set up an equasion that would be wonderful
Thanx for any help
- stormswimmer

Board footer

Powered by FluxBB