Mathematics - 11 September 2007

My ittle sister asked me to help her with her math, BUT I have no idea what a factor is!
Example: She needs to find the factors of 37 and 28.

2007-09-11 09:35:06 · 1 answers · asked by Anonymous

Q: Five maple trees and six ash trees are on sale for $83. Nine maple trees and eleven ash trees are on sale for $151. What is the cost of an Ash tree.....
I figured this much:
5m + 6a = 83
9m + 11a = 151
I know I have to substitute, but I keep getting a negative number.

2007-09-11 09:31:41 · 4 answers · asked by Anonymous

Please show workings.

2007-09-11 09:21:08 · 6 answers · asked by Special K 1

this might sound dumb but i really don't get why some units of measurement have exponents
need to know why to do my homework...

400 cm³ = ___ L?

400 cm³ = ___ m³ ?

all so confusing to me :/ giving the 10 points for whoever gives best explanation!!! thnanks :/

2007-09-11 09:13:04 · 4 answers · asked by No. 01 2

P<->Q = (P->Q) ^ (Q->P)

2007-09-11 08:51:34 · 1 answers · asked by Anonymous

2007-09-11 08:49:28 · 5 answers · asked by Felipe Cruz 1

the triangle is a right angle trianglle. The bottom line is 42' , the side line is 31' and the slanted line is x. How do i figure it out?

2007-09-11 08:35:43 · 6 answers · asked by tytyylleerr 1

{-1/4,2/9,-3/16,4/25,...}

thanks alot for your help.thankssssss

2007-09-11 08:33:44 · 1 answers · asked by joy 1

Vincente and Ricarda Perez have invested $27,000 in bonds paying 7%. How much additional money should they invest in a certificate of dposit paying 4% simple interest so that the total return on the two investments will be 6%?

2007-09-11 08:24:49 · 3 answers · asked by Jenn 2

Can someone plz help with this prob. thanksssss
a sub n= (-1)^(n-1)n/ n^(2) +1

2007-09-11 08:23:17 · 1 answers · asked by joy 1

a) Factor one expression by grouping terms

x^5+x^4+x+1

b) Factor one expression completely

(a^2-1) b^2-4 (a^2-1)

c) Factor one expression completely. Begin by factoring out the lowest power of each common factor

x^-1/2 (x+1)^1/2 + x^1/2 (x+1)^-1/2

2007-09-11 08:23:08 · 2 answers · asked by alexo 4

what kind of number?

2007-09-11 08:15:23 · 10 answers · asked by Anonymous

1)dy/dx=(1-y)cosx , y(pi)=2

and

2)dy/dx+ycotx=cosx

I've tried so much with these, but they are getting really messy, and I am getting really strange answers.

2007-09-11 08:13:16 · 2 answers · asked by dtsairman 3

I'm not exactly sure how to do this particular problem I don't know why kind of graph I'm supposed to use. Thanks for any help!

Question:
Listed below are the survival times in days of 72 guinea pigs after they were injected with infectious bacteria in a medical experiment. Survival times, whether of machines under stress or cancer patients after treatment, usually have distributions that are skewed to the right.

Data:
43, 45, 53, 56, 56, 57, 58, 66, 67, 73, 74, 79, 80, 80, 81, 81, 81, 82, 83, 84, 88, 89, 91, 91, 92, 92, 97, 99, 99, 100, 100, 101, 102, 102, 102, 103, 104, 107, 108, 109, 113, 114, 118, 121, 123, 126, 128, 137, 138, 139, 144, 145, 147, 156, 162, 174 178, 179, 184, 191, 198, 211, 214, 243, 249, 329, 380, 403, 511, 522, 598

(a) Graph the distribution and describe its main features. Does it show the expected right shew?
(b) Which numerical summary would you choose for these data? Calculate your chosen summary. How does it reflect the skewness of the distribution

2007-09-11 08:10:53 · 3 answers · asked by Anonymous

In Jada's class, 5/7 of the class is wearing jeans and 2/3 of the jeans are blue jeans. What fraction of the entire class is wearing blue jeans?

2007-09-11 08:06:44 · 4 answers · asked by Anonymous

How many cubic centimeters are in an 8.00 oz bottle of cough medicine?

(1.00 oz =29.6ml)

2007-09-11 07:59:57 · 5 answers · asked by dnice 1

is 3/4 pie radians converted to degrees ..45 degrees?

and

210 degrees converted to radians ..is 7/6 pie or 5/4pie ??

and

1/24 expressed to 4 places is 0.4167 ?

2007-09-11 07:59:22 · 3 answers · asked by Anonymous

12x + 8x / 4 x (3^2 - 3)

2007-09-11 07:54:43 · 4 answers · asked by Anonymous

1.) Solve the inequality and write the solution in interval notation:
/3x + 1/>10 ...(the absolute of 3x plus 1 than greater than or equal to 10)
2.) Factor the expressions 15b2 + 4b - 4 and x64 - y64..using any method
3.) Use the factor theorem to decide wheather x-5 is a factor of P(x) = x3 - 3x2 - 8x - 10
4.)Find the domain and range of f (x) = x + 2/ x..and how you would graph that..
THANK YOU...CORRECT ANSWERS= 10PTS!

2007-09-11 07:53:28 · 1 answers · asked by sweetness105 1

BTW, that's e to the power of theta, just in case. I don't know how to type those on my compooty.

2007-09-11 07:47:42 · 2 answers · asked by geezuskreyest 5

For example like radical (30) or 24. Can anyone give me the process. Sorry i can't seem to get the radical sign typed.

2007-09-11 07:47:29 · 3 answers · asked by Mohsy 3

2007-09-11 07:47:23 · 8 answers · asked by redbone001 1

find the smallest possible value of the sum of the squares
........2..2
S = X + Y
the above example is : s = x square + y square

2007-09-11 07:42:54 · 6 answers · asked by M R 1

2007-09-11 07:39:09 · 9 answers · asked by Anonymous

solve equation:

(2n+3) (n-4)=0

could you show work please?

2007-09-11 07:37:25 · 6 answers · asked by s.s. coolio 2

x/2 + y/3 = 1

3/1(3x/2 + y) = 3 3 in y/3 cancels

2/1(3x + 2y) = 6 2 in 3x/2 cancels

3x + 2y = 6

3x +2y - 6 = 0 ?

2007-09-11 07:34:37 · 7 answers · asked by Matthew K 2

2007-09-11 07:33:12 · 3 answers · asked by nothingspecial 1

in maths

2007-09-11 07:32:57 · 1 answers · asked by rock star 1

I can plug numbers in (for k>=1) and see that it works but does this work for all primes? and do all primes have this form? I would like to know where does 6k+1 or 6K+5 come from?

2007-09-11 07:27:07 · 6 answers · asked by sh 1

2007-09-11 07:21:50 · 5 answers · asked by Theresa F 1