Mathematics - 11 December 2007

Ok, if there is a bag containing 2 red, 6 blue, 7 yellow, and 3 orange marbles, and once a marble is pulled it is not replaced, what would be the probability of pulling 2 yellow marbles in a row, and then an orange marble? This is what I came up with, and wanted it checked over:

Probability of first yellow: 7/18
Probability of second yellow: 6/17
Probability of third being orange: 3/16

Multiply the three together to get: 7/272

Is that right?

2007-12-11 12:26:07 · 2 answers · asked by speedndelko4u 1

A PURCHASE IS MADE UNDER FOLLOWING CONDITIONS. tHERE IS A 25% DISCOUNT BECAUSE OF A SALE, A 10% DISCOUNT BECAUSE OF THE SIZE OF THE ORDER , AND A 5% DISCOUNT FOR NOT USING A CREDIT CARD. tHE DISCOUNTS ARE TAKEN SUCCESSIVELY. IF A CUSTOMER PAYS $1385.10, WHICH INCLUDES AN 8% SALES TAX, WHAT WAS THE ORIGINAL PRICE BEFORE TAX AND ANY OF THE DISCOUNTS?? (SUCEESSIVELY MEANS DISCOUNTS TAKEN ONE AT A TIME, NOT TOGETHERE)

2007-12-11 12:24:52 · 7 answers · asked by YIA123 2

I need to be able to determine the graphs direction, identify the vertex point and any axis interceptions. Please help. Serious answers only

2007-12-11 12:24:35 · 1 answers · asked by Anonymous

I HONESTLY HAVE NO IDEA HOW THIS DONE

(X-0)=-8(Y-0)

2007-12-11 12:18:12 · 2 answers · asked by Anonymous

Always Sometimes Or Never

2007-12-11 12:14:50 · 7 answers · asked by Mijail S 2

You are offered two jobs selling textbooks. One company offers an annual salary of $20,000 plus a year-end bonus of 1% total sales. he other company offers an annual salary of $15,000 plus a year-end bonus of 2% total sales.

Determine the annual sales required to make the second offer better.

2007-12-11 12:02:17 · 11 answers · asked by Anonymous

I need these two factored quickly please :O

x^2+9 and a^2-100

it's like a square and a cube so their confusing me and i have to go test in an hour

5 stars to whoever gets it first

2007-12-11 11:43:11 · 2 answers · asked by tentoesdown 2

help please

2007-12-11 11:42:13 · 7 answers · asked by kay babez fresh kidd. 1

2007-12-11 11:40:43 · 5 answers · asked by Anonymous

i really need help with these. if possible explain it terms that relatively make sense.. thanks

2007-12-11 11:33:29 · 1 answers · asked by henry 2

2007-12-11 10:55:11 · 8 answers · asked by Anonymous

A skier traveling 12.0 m/s reaches the foot of a steady upward 18° incline and glides 10.2 m up along this slope before coming to rest. What was the average coefficient of friction

2007-12-11 10:34:58 · 2 answers · asked by roofchelsea 1

I need help with this problem:

An isosceles trapaziod has sides whose lenghts are in the ratio 5:8:5:14. Find the measure of the angle between one of the legs and the shorter base

Thanks for the help!!

2007-12-11 10:33:54 · 1 answers · asked by Mia16 3

Can someone check my answers please.

The formula for calculating the amount of money returned for an initial deposit into a bank account or CD (certificate of deposit) is given by

A=P(a+r/n)^nt

A is the amount of the return.
P is the principal amount initially deposited.
r is the annual interest rate (expressed as a decimal).
n is the number of compound periods in one year.
t is the number of years.

Carry all calculations to six decimals on each intermediate step, then round the final answer to the nearest cent.

Suppose you deposit $4,000 for 8 years at a rate of 7%.

Calculate the return (A) if the bank compounds annually (n = 1). Round your answer to the hundredth's place.

P=4000
r=.07
t=8
n=1
A= ?

A=(4000)(1+.07/1)^(1)(8)
A=(4000)(1.07)^8
A=(4000)(1.71818)
A=$6,872.72

2007-12-11 10:32:53 · 1 answers · asked by cupnnas2002 3

2007-12-11 10:31:35 · 3 answers · asked by Anonymous

math, show work please

2007-12-11 10:23:14 · 1 answers · asked by Danilo O 1

combine into a single logarithm and siplify
4logx- log(x^2y)+ log(3y)

they are all base 10..
any ideas on how to go about this one? is the only problem i couldnt solve!!!

2007-12-11 10:19:24 · 3 answers · asked by rnyc14 2

3 Guys walked into a Motel for the night, the rate was $300 for the room, so the three men paid $100 each...

Two hours later, the owner had realised that he had overcharged them by $50, that the room should of been $250. He called the bellboy up and gave him the $50 to give to the guys. While the bellboy was walking up he thought to himself " I'll put $20 in my pocket and give the guys back $10 each "...

By giving back the $10 each, the men had paid $90 each for the room, making the total cost of $270 for the room, but the bellboy still has the $20 in his pocket, making the total $290. Were the original payed figure was $300.

3 x $100 = $300 (old Price)
$10 was given back for overprice making room $90 each
3 x $90 = $270 (new price)
plus the $20 in bellboys pocket
equalling $290..... WHERE DID THE OTHER $10 GO TO??

2007-12-11 10:09:40 · 5 answers · asked by Damo 5

Going into the final exam ,which will count as two-thirds of the final grade,Mike has test scores of 86,80,84,90. What score does mike need on the final in order to earn a B which requires an average score of 80?

Im not sure how to set up the equation..please help if you can.

2007-12-11 10:05:40 · 4 answers · asked by Baby Jet 2

2007-12-11 09:58:09 · 3 answers · asked by makelovenothate 2

I have an Idea of what the answer may be, but I want to see if I'm correct.

ok.. well the questions is.
If you have the numbers (1,2) (3,4,5) (6,7,8,9) (10,11,12,13,14) and you keep following the pattern, what will the last number be if repeated to the 100th time??

2007-12-11 09:51:58 · 8 answers · asked by yoyoguy21 1

A) 5sqrt6
B) 6sqrt5
C)3sqrt10
D)36 sqrt 5

2007-12-11 09:45:43 · 3 answers · asked by Anonymous

letter

I believe this requires the pigeon hole principle and would like a solution and explanation.

2007-12-11 09:44:18 · 1 answers · asked by Anonymous

What?

2007-12-11 09:38:04 · 6 answers · asked by Alex W 2

The directions say:
Solve each system by elimination. Check your answer after. Also solve for X AND Y

1. x+5y=-7
-x+2y=-8

2. 3x+y=-26
2x=y=-19

3. x+3y=-14
2x-4y=32

4. 4x-y=-5
-2x+3y=10

5. y-3x=11
2y-x=2

6. -10x+y=0
5x+3y=-7

thanks!

2007-12-11 09:37:45 · 5 answers · asked by Anonymous

If YOU WERE TO DRAW 3 LINES RANDOMLY, WOULD THEY FORM A TRIANGLE?

2007-12-11 09:32:35 · 6 answers · asked by School Freak 2

Find the perimeter of the triangle shown in the figure.

Note: The triangle shows the following numbers on each side...
top-4; left-square root 5(negative sign in the middle) and sqare root 3...right-square root 5(positive sign in the middle) and square root 3...PLEASE HELP!

2007-12-11 09:24:00 · 1 answers · asked by God Bless America!~ 4

well, i am taking AP-calculus this year and now i am on the application of minimum and maximum. the stupid thing i cant understand is the (volume) and the (surface area) , i dont know what is the difference between them

I.E: the volume of a rectangular solid .....

2007-12-11 09:22:00 · 6 answers · asked by Anonymous

Solve each inequality. Check your solution
1) 2x < 8
2) 3x > -6
3) -4t > -20
4) a/5 > 10
5) -8 > k/-0.4
6) m/-7 < 1.2
7) -s/3 < -3.5
8)36 > -1/2y
9)-273 > -13z

2007-12-11 09:21:49 · 4 answers · asked by haaaaahaaaa! 1

Solve each equation. Check your solution
1) 3(a-5)=18
2) 32=4(x+9)
3) 2(d+6)=3d-1
4) 6(n-3)=4(n+2.1)
5) 12-h=-h+3
6) 3(2g+4)=6(g+2)

2007-12-11 09:17:00 · 4 answers · asked by haaaaahaaaa! 1