Mathematics - 24 June 2007

only use four eight's.

2007-06-24 23:40:57 · 5 answers · asked by Anonymous

1) the square of a number is 12 more the original number. find two possible original numbers ?
2) if 15% of an amount is 24, what is the amount ?
3) zoe travelled 85km/h for 3 hours. how far did she travel ?

2007-06-24 23:00:31 · 12 answers · asked by jess y 4

of R
choice

a) 5cm
b) 6cm
c) 8cm
d) 10cm

2007-06-24 22:51:00 · 11 answers · asked by archa n 1

than the number. Which of the following digits is at unit’s place of the number

choice
a) 1
b) 2
c) 4
d) 8
e) None

2007-06-24 22:35:20 · 9 answers · asked by sri d 1

1) the surface area of a cube is 96cm squared. find its volume in cm with little 3 on top ?
thanks

2007-06-24 22:31:23 · 5 answers · asked by jess y 4

can someone take me step by step....for this : y=x+2
y=x^2

2007-06-24 22:21:38 · 7 answers · asked by funkenstien 2

2007-06-24 22:01:16 · 9 answers · asked by Anonymous

∞
∑ 4n^2 + 2n -1/ 2n^2 - 1
n=1

2007-06-24 21:37:31 · 3 answers · asked by mini_dilligaf 1

Try to find next number of the series------
2, 1, -1, -2, 9, ?

2007-06-24 21:35:13 · 9 answers · asked by Anonymous

dy/dt + 2y = 4sint

- i found the integrating factor I(x) and multiplied through by it but i end up with

ye^(2t) = Integral of (4sint * e^2t) dt and i dont know where to go from there

2007-06-24 20:58:03 · 1 answers · asked by Tahlia 1

2007-06-24 20:32:17 · 5 answers · asked by Ainee 1

2007-06-24 20:28:11 · 4 answers · asked by Anonymous

Given A = {1, 4, 7, 10} and B = {2, 5, 8, 11}, find n (A x B)

plz show work & all steps thanks

2007-06-24 20:26:47 · 5 answers · asked by ÄÐЦÇT¦ÖÑ™ 4

An experiment is conducted where two standard 6 sided dice are rolled and the sum of the numbers that show face up is recorded.

A. What values can the random variable assume?
B. List the probability distribution of the random variable?

Can someone help me answer this question pleasee..

2007-06-24 19:58:49 · 3 answers · asked by freaking_naj 1

0+0-0+1-1+2-2+3-3+4-4+5-5+6-6+7-7+8-8+9-9+10-10+11-11+12-12+13-13+
14-14+15-15+16-16+17-17+18-18+19-19+20-20+21+22-22+23-23+24-24+25-
25+26-26+27-27+28-28+29-29+30-30+31-31+32-32+33-33+34-34+35-35+36-
36+37-37+38-38+39-39+40-40+41-41+42-42+43-43+44-44+45-45+46-46+47-
47+48-48+49-49+50-50=??

2007-06-24 17:58:31 · 9 answers · asked by Anonymous

-4x = 6(x+5)

I'm trying to find out what X is...

2007-06-24 17:40:24 · 8 answers · asked by Lindsay 3

2007-06-24 17:38:48 · 1 answers · asked by Anonymous

Can't remember how to do this kind of factoring...help please??
4x^2+20x+25

There's also this one...
10x^2-21x-10

But I think it's the same idea as the other one.

2007-06-24 17:32:59 · 4 answers · asked by Raina 3

I had a person answer one of my math questions and they put a ^in between the formula and numbers what does that mean. does it mean multiply or adding or what?

2007-06-24 17:28:45 · 6 answers · asked by knowssignlanguage 6

There is this differential equation with I can't solve. I'm worried it will show up again on the exam. Supposedly, it is solved my substituting v=sin(y) but I don't see how cos(y) goes away. Here it is:

(2xsin(y)cos(y))y' = 4x^2 + sin^2(y)

After subbing v=sin(y), the book says you have:
2xvv' = 4x^2 + v^2

My only question is, how the heck did cosine go away, and why is there magically a v' ???

Thanks! this has had me stumped all day.

2007-06-24 17:25:52 · 3 answers · asked by Anonymous

What is 1.78 cm in feet.....and what will be 5 foot 11inch be in cm

2007-06-24 17:24:59 · 6 answers · asked by beautifulred 1

anyone got any solutions here PLEASE

2007-06-24 17:20:12 · 3 answers · asked by xGuitaristx 2

gawd i need help, lol:

the BINOMIAL Probability Distribution question reads:

"XYZ company randomly selects and tests 24 light bulbs, then accepts the whole batch if there is ONLY ONE OR NONE that doesn't work. If a particular shipment of thousands of bulbs actually has a 4% rate of defects, what is the probability that this whole shipment will be accepted?"


this is how i do:
let n=fixed number of trials
let x=specific number of successes in 'n' trials
let p=probability of success in one of the 'n' trials
let q=probability of failure (or q=1-p)

n = 24, x = 24, p = 1-0.04, or 0.96 (or 96%)
P (x is at least 23) = P (23) + P (24)= 0.391+0.375=0.766, or 77%.
[NOTE: i used the binomial probability formula above, which is given as n!/[(n-x)!x!] * p^x * q^(n-x)]

is this right?
please help, thanks

2007-06-24 16:35:07 · 1 answers · asked by helloWorld 1

A die is continuously rolled until the total sum of all rolls exceeds 200. What is the probability that at least 65 rolls are necessary?

Please solve this problem and explain the steps for me...

2007-06-24 16:04:45 · 3 answers · asked by Sherry 1

48. Business and finance. When x number of units are sold, the price of each unit (indollars) is given by p=-x/2+75 . Find the unit price when the following quantitiesare sold: 2, 7, 9, 11

2007-06-24 15:59:03 · 4 answers · asked by Anonymous

what happens once in a minute, twice in a moment, but never in a life time?

2007-06-24 15:53:30 · 10 answers · asked by lauren r 1

It's twice in a week, so how many times in a year?

2007-06-24 15:48:35 · 28 answers · asked by ? 5

Using modus ponens or modus tollens can anyone fill in the second second line for this:

a.If this is a while loop, then the body of the loop may never be executed.

2007-06-24 15:43:11 · 2 answers · asked by mike j 1

A bridges that crosses a river is 1km long. From 1 point on the river, the angle of elevation of the top of the bridge is 62.6 degrees. From a point 20m closer to the bridge, the angle of elevation of the top of the bridge is 72.8 degrees. How high is the bridge above the water, to the nearest meter?

how would u solve this plz give thorough description

2007-06-24 15:31:08 · 4 answers · asked by Mikey j 1

USE SUBSTITUTION TO SOLVE EACH SYSTEM OF EQUATIONS. CHECK SOULTION?
SUMMER HELP PLEASE

2007-06-24 15:20:33 · 6 answers · asked by king 1