Mathematics - 12 October 2007

2007-10-12 23:52:15 · 7 answers · asked by Anonymous

2007-10-12 22:47:17 · 4 answers · asked by Shadow 2

ONLY BY PARTS

2007-10-12 22:32:28 · 2 answers · asked by boris l 1

2007-10-12 21:36:46 · 4 answers · asked by lcollis2002 1

2007-10-12 21:26:32 · 17 answers · asked by AMANDA C 1

please help. . i need the answer now. . thanks

2007-10-12 19:59:49 · 3 answers · asked by Gabhriel A 1

(3)Jason had to submit five animation projects as per his syllabus in the final semesters. He scored 82, 85, 78, and 88 points out of 100 in four projects. What should be his score in the fifth project so that the average of all the projects is at least 85?

(4)Martha wants to buy a digital camera from her three-month savings. To do this she needs to maintain an average saving of $300 in each month. She saves $450 in the first month and $200 in the second month. Find the amount she should save in the third month to buy a digital camera at the end of three months.

2007-10-12 19:29:48 · 7 answers · asked by MaRs 1

For what values of 'b' will the equation x^2 + bx + 81 = 0 have two equal roots?

A) -18 < b < 18
B) b < 18
C) b = + or - 18
D) b > 18

2007-10-12 19:26:31 · 4 answers · asked by Anonymous

1. A group os students were asked if they carry a credit card. The responses are listed below:

Freshman-- 24(CC Carrier)--36(Not a CC Carrier)--Total(60)
Sophmore--37(CC Carrier)--3 (Not a CC Carrier)--Total(40)
Total----------61(CC Carrier)-39(Not a CC Carrier)--Total(100)

If a student is selected at random, find the probability that he or she owns a credit card given that the student is a freshman. Round your answer to three decimal places.

A. 0.400
B. 0.600
C. 0.240
D. 0.393

2. Classify the events as dependent or independent. Events A and B where P(A)=0.8, P(B)=0.1, and P(A and B)=0.07

A. dependent
B. Independent

3. You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that the first card is a two and the second card is a ten. Round your answer to three decimal places.

A. 0.006
B. 0.250
C. 0.500
D. 0.994

2007-10-12 18:38:43 · 2 answers · asked by wobble692001 1

pls show the representation,equation, solution and the final answer.. thank you.

1. when the square of the second of two consecutive integers is added to twice the first integer, the sum is 116. Find the integers.

2007-10-12 18:24:00 · 8 answers · asked by aqlngnaman 1

The answer says y' = 6x + 4, then substitute in x=3 and you get y'=18+4=22

I don't understand how the derivative of y is y'=6x + 4?

2007-10-12 17:46:10 · 9 answers · asked by kay l 2

Of the 6 courses offered by the music department at her college, Kay must choose exactly 4 of them. How many different combinations of 4 courses are possible for Kay if there are no restrictions on which 4 courses she can choose?

Please explain step by step. I'm just setting foot into this area of mathematics. I understand that the number of possible permutations are

6*5*4*3 = 360.

I want to know the way to find the different combinations including repeats.

Like...

A B C D = 1
A B D C = 2
.... = 3


... = blah?

What's the mathematical way to find the number of those?

If there were two choices the number of combinations would be

A B = 1
B A = 2

2007-10-12 17:43:13 · 4 answers · asked by Snipe_AT 2

2007-10-12 17:40:12 · 2 answers · asked by mercin5 1

Prove that:

tanX/2 equals to cscX - cotX

2007-10-12 17:28:37 · 2 answers · asked by Anonymous

Eliminate the parameter t to find a Cartesian equation for:

x=t^2
y=3+4t
x=Ay^2+By+C

Where A = ?
B = ?
C= ?

2007-10-12 17:23:35 · 4 answers · asked by snowwind_7 2

Let the function f be defined by f(x) = x2 - 7x + 10 and f(t + 1) = 15, what is one possible value of t?

What will happen now?

2007-10-12 17:20:51 · 3 answers · asked by Snipe_AT 2

Trying to solve this please.

2007-10-12 17:18:51 · 5 answers · asked by Anonymous

pls show the representation,equation, solution and the final answer.. thank you.

1. when the square of the second of two consecutive integers is added to twice the first integer, the sum is 116. Find the integers.

2007-10-12 17:14:24 · 8 answers · asked by cyyrrriiiilllll 1

Use Implicit differentiation to find dy/dx of x^2 + xy + y^2 =3

2007-10-12 17:06:58 · 4 answers · asked by Anonymous

An equation of 5x+6y-3=0 is given and it wants me to find an x,y coordinate that is closest to -1, -7

I changed it over to slope form y = 1/2 - 5/6x
would I need to find the perpendicular and go from there?
and use y - y1 = m (x - x1) ?
and then re-input it back to the original formla?

Or is there a better way to do this?

2007-10-12 16:55:11 · 4 answers · asked by ret80soft 1

Let the function f be defined by f(x) = x2 - 7x + 10 and f(t + 1) = 0, what is one possible value of t?

Please explain. I don't understand why you can substitute in "t+1" for the "x" in the other equation.

2007-10-12 16:50:33 · 3 answers · asked by Snipe_AT 2

2007-10-12 16:19:26 · 8 answers · asked by lizz p 1

(a) 100dw/c
(b) dw/100c
(c) 100cdw
(d) dw/c
(e) cdw

2007-10-12 16:18:10 · 4 answers · asked by hallofamer20 2

Hey folks. I'm trying to prove Fermats Last Theorem the way that Fermat himself did (not the new 20th century proof). Any suggestions?

2007-10-12 16:17:33 · 4 answers · asked by Ben H 5

i need help with this math problem
3w+2-w=4
i need to fin what w is

2007-10-12 16:01:54 · 9 answers · asked by shorty s 1

I need help solving linear equations


3x+2y=18
x+y=1

2007-10-12 15:49:19 · 8 answers · asked by Anonymous

algebra question solve it for me please.

2007-10-12 15:47:27 · 2 answers · asked by sandershay614 2

2007-10-12 15:35:56 · 11 answers · asked by Petunia 1

than the width and that the perimeter of the rectangle is 78

a) set up an equation involving only "L", the length of the rectangle.

b) solve this equation algebraically to find the length of the rectangle. Find the width as well.
length _______, width _______

2007-10-12 15:34:46 · 10 answers · asked by Anonymous

Q1) Solve the simultaneous equations:
2x + y = 12,
3y - 2x = 56.

Q2) Simplify: { (3y^2 + 8y + 4) / y^2 - 4 }

2007-10-12 15:31:58 · 7 answers · asked by Anonymous