Mathematics - 22 July 2007

What are the exact directions on solving a cryptarithm? It is sorta confusing...I coudn't find it on the internet. How do you solve it?

2007-07-22 08:21:10 · 3 answers · asked by Hannah_Montana_fan 1

2007-07-22 08:17:15 · 9 answers · asked by rhymeprophet 1

2007-07-22 08:11:15 · 7 answers · asked by Eugene 6

12a - 5b = 18
15a - 5b = 30

thank you

2007-07-22 08:05:46 · 6 answers · asked by Anonymous

How do you factor the perfect square trinomial?

2007-07-22 07:27:21 · 7 answers · asked by Jacesmom 2

What is the expected mean number of failures?

2007-07-22 07:21:47 · 5 answers · asked by Anonymous

12a - 5b = 18
12a - 5b = 30

thanks

2007-07-22 07:18:44 · 5 answers · asked by Anonymous

x = 1/5y
3x + 2y = 26

thank you VERY much for your help.

2007-07-22 07:06:58 · 5 answers · asked by Anonymous

f(x)=(-5x^2-5x-2)(-4x-5), x=0

2007-07-22 06:34:48 · 3 answers · asked by NECE 1

2007-07-22 06:17:02 · 2 answers · asked by Anonymous

You are at a restaurant. You have 8 dishes to choose from, and you may choose 5 for dinner. Repeats are allowed. For example, you may choose 5 of the first dish. How many possible different dinners can you come up with?

2007-07-22 06:11:20 · 16 answers · asked by CoolioMADDog 4

2/y-2+1/y+2=4/y2-4

whats the answer and how do u do it.

2007-07-22 06:06:47 · 7 answers · asked by A..Sabri 2

Can someone point me in the right direction..i dont understand this

2007-07-22 05:40:11 · 6 answers · asked by Anonymous

also, how much are the pennies in dollars?

2007-07-22 05:32:54 · 5 answers · asked by grgepley 2

Q1)A car of mass 1200kg travels alone a horizontal straight road. The power provided by the car's engine is constant and equal to 20kw. The resistance to the car's motion is constant and equal to 500N. The car pases through the point A and B with speeds 10ms^-1 respectively. The car takes 30.5s to travel from A to B.

i) find the acceleration of the car at A.

ii) by considering work and energy, find the distance AB.

Q2) A and B are points on the same line of greatest slope of rough plane inclined at 30degree to the horizontal. A is higher up than plane B and the distance AB is 2.25m. A particle P of mass m kg is released from the rest at A and reaches B 1.5 s later. Find the coefficient of friction between P and the plane.

anyone can help me with this working thanks...

2007-07-22 05:22:11 · 5 answers · asked by adsion l 1

5x^2+8x+7=0
(7)^1/2y^2-6y-13(7)^1/2=0
2x^2+x-1=0
4/3x^2-2x+3/4=0
Please explain to me how to get these solutions

2007-07-22 05:11:01 · 3 answers · asked by littlesoutherner12 1

2007-07-22 05:04:18 · 6 answers · asked by Anonymous

2007-07-22 04:52:27 · 13 answers · asked by Anonymous

I know what the answer is. 9x^2 + 4y^2 - 12xy. I just can't figure out how to get there.

Thanks

2007-07-22 04:44:19 · 9 answers · asked by Anonymous

Directions: Choose the best estimate

26 25/49 - 24 19/81 is approximately

a. 2 1/2
b. 2 3/4
c. 2 1/4
d. 1 1/2

Now the answer is C, but I need to know how to get this answer.

2007-07-22 04:44:02 · 9 answers · asked by Iraima R 1

Can somebody explain:

Write the terminating decimal in common fractional notation.

0.025

The answer is 1/40.

Can somebody explain how to get the answer and also give me a little info on common fraction notation?

2007-07-22 04:35:48 · 9 answers · asked by Iraima R 1

hi all
For this one
3^x=√3
i need to exp so u get 3^0,5 <===== but how do u get that


thank u very much

2007-07-22 04:13:45 · 3 answers · asked by playerr 3

2007-07-22 03:50:07 · 5 answers · asked by bianca 1

Just for curiosity, how good an approximation can you find for π using an nth-root of an integer (a^1/n), or ( a^m/n).
State your accuracy (no. of decimal places).

It's surprising that you can find small numbers that do a pretty good job:

10^1/2 = 3.16 (1dp accurate)
31^1/3 = 3.1414 (3dps)
97^1/4 = 3.14 (2dps)
306^1/5 = 3.1416 (4 dps)
3020^1/7 = 3.141549 (3 dps)
29809^1/9 = 3.141591 (5 dps)
...

To find such approximations, simply raise π^n for some n, round up/down to nearest integer, then take the nth root.

(This doesn't really have much application, unless you can suggest one where π appears exponentiated, or you really need an approximation to (say) compute the volume of a hyphersphere :) )

2007-07-22 03:37:52 · 3 answers · asked by smci 7

- 5.95 - (- 5.1 - -5.1)
- 10.2 - +10.2

2007-07-22 03:13:16 · 4 answers · asked by Anonymous

what is the use of standard deviation and variance means?

2007-07-22 02:54:25 · 2 answers · asked by Anonymous

+5.1 - +6.6 =
-7.3 - +3.7=
-8.1 - 5.1 =
-3.1 - (+0.4- +6.1)

2007-07-22 02:44:11 · 8 answers · asked by Anonymous

PQR is a triangle right angled at P and M is a point on QR such that PM┴QR. Show that PM² = QM * MR

I got the answer, but it took soooo many steps! No using similarity. We must only use the Pythagoras theorem. My teacher says we can do it in less than 6 steps! I used a whopping 13 steps to get it! Help. Is there a shorter way?

2007-07-22 02:03:20 · 5 answers · asked by Akilesh - Internet Undertaker 7

* For two complex numbers a and b,
if a+b and a*b are algebraic over Q (the rationals), then why are a and b (separately) also algebraic?

* Why does X^(p^4) - X factor Over Fp (the finite field with p members, p of course is primary) into irreducibles of degrees 4,2 and 1 only?

2007-07-22 01:34:03 · 2 answers · asked by Uri Y 1

I was wondering, how would one describe the given surface:

y^2 + z^2 = 4

2007-07-22 00:35:16 · 2 answers · asked by Teah 1