Mathematics - 20 July 2007

1. one number is 11 more than twice another number.If the sum of the numbers is twice their difference find the numbers.

i cant get this...help please

2. Mrs.West is 14 years younger than her aunt.If Mrs.West age in years is as much below 60 as her aunts age is over 40 how old is each

2007-07-20 17:34:31 · 10 answers · asked by percy m 1

log6 (3) + log5 (2) is equivalent to

A) 0

B) ln(2) * ln (6)

C) 1 / ln(6)

D) ln(2) / ln (9)

E) 9

F) [ln(5)*ln(3)) + ln(2)*ln(6))]/ [ln(5)*ln(6)]

2007-07-20 17:34:13 · 3 answers · asked by Mysara e 2

2007-07-20 17:33:30 · 4 answers · asked by Brunette 1

2007-07-20 17:25:15 · 7 answers · asked by Irish B 1

2007-07-20 17:17:47 · 5 answers · asked by Brunette 1

Just guess a whole counting number.
I'll reveal the number later.

2007-07-20 17:15:33 · 8 answers · asked by winter_new_hampshire 4

Given the equation of regression line is y = -4.5x - 5.8, what is the best predicted value for y given x = -9.3? Assume that the variables x and y have a significant correlation.

PLz help me anyone

2007-07-20 16:52:16 · 3 answers · asked by Anonymous

in 1996, the civilian labor force of the united states included 127 million people, & 5% were unemployed. how many people in the civilian labor force were unemployed?

an inspector examined 200 computer componants & rejected 19% of them. how many were rejected?

a serving traymade of brass weighs 21 ounces. this brass is an alloy of 70% copper & 30% tin. what is the weight of copper in the tray?

twenty-nine of the first forty-two presidents were lawyers. wat percentage of these presidents were lawyers?[giver answer to the nearest 1%]

2007-07-20 16:26:39 · 6 answers · asked by Anonymous

I just rediscovered a java program I wrote a long time ago that will quickly show you prime numbers within a selected range of numbers. For example, find all prime numbers between

800000000000001

and

800000000001001

and I discover all of these are prime:

800000000000017
800000000000039
800000000000053
800000000000057
800000000000137
800000000000167
800000000000183
800000000000221
800000000000263
800000000000321
800000000000363
800000000000371
800000000000381
800000000000407
800000000000413
800000000000417
800000000000437
800000000000491
800000000000533
800000000000611
800000000000627
800000000000653
800000000000657
800000000000687
800000000000699
800000000000779
800000000000807
800000000000911
800000000000951

And just for fun, my program took a while to compute this, but this is also prime...

3,011,992,887,555,100,289 (that's three quintillion, hahaha)

What an age we live in!

2007-07-20 16:22:39 · 6 answers · asked by what? 5

every1 has ben really nice with their answers.
and here are some more questions.
wat is four-ninths of 81/144 square foot?
a piece of wire 27/32 inch in length is cut into 3 equel pieces, how long is each piece?
a metal plate iscontaining 3/4 square foot of material is divided into 6 equel parts. how much material[in square feet] does each part contain?

2007-07-20 16:15:31 · 8 answers · asked by Anonymous

equation of the line to the tangent curve at

x ln y+ 5xy=20 at the point 4,1

2007-07-20 16:14:13 · 3 answers · asked by Anonymous

r to the power of 3 divided by r to the power of 8??
i cant write it with the tiny number on this thing!

2007-07-20 16:09:14 · 9 answers · asked by golden<3 2

A person 5-ft tall casts a shadow 3-ft long. At the same time, a nearby tree casts a shadow 38-ft long. Find the height of the tree.

Answer: The tree's height is_____ ft long. (Round to the nearest tenth.)

2007-07-20 16:08:28 · 12 answers · asked by hllywdbabe7 1

1. Factor:
3y^2 - 4y - 20
Which of the following is one of the factors?

(3y - 10)
(y + 3)
(3y + 2)

2. Solve by factoring: One of the solutions to the quadratic equation 2x^2 - 7x + 5 is (5/2). What is the other solution? (Type only the numerical value of the other solution. Do not use any variables or skip any spaces.)

3. Factor 6x^2 + 5x - 6
Show all work

4. Factor:
x^2 - 5x - 6
Which of the following is one of the factors?

(x + 2)
(x + 5)
(x - 6)

5. Solve by factoring: One of the solutions to the quadratic equation x^2 + 3x - 28 is -7. What is the other solution? (Type only the numerical value of the other solution. Do not use any variables or skip any spaces.)

6. What is the Greatest Common Factor for the given polynomial?
5x^3y^2 + 15xy^2 + 25x^2y^3

5x
5xy
5xy^2
prime

7. Factor completely:
8x^4 + 4x^3 - 24x^2

4x^2(2x^2 + x – 6)
4x^2(2x – 3)(x + 2)
4(2x^4 + x^3 - 6x^2)
prime

8. 2x^2 + x - 3
9. 2x^2 - 5x - 3
10. 2x^2 - x - 3
11. 4x^2 - 20x + 25
12. 4x^2 - 15x - 25

2007-07-20 16:04:33 · 3 answers · asked by Anonymous

Need help with 5sqrt 64

2007-07-20 16:01:35 · 3 answers · asked by ksstormhunter 1

is a corespondence thingy....i dont get it @ all!!
& some more questions are:
wat part of a yard is 24 inches?[answer in lowest terms]
one thousand three hundred twenty feet are what part of a mile?
three-fourths of a gallon is how many eighths of a gallon?
eight-twentieths of a ton is how many one hundreths of a ton?

2007-07-20 15:39:31 · 11 answers · asked by Anonymous

I'm not a math person and couldn't figure out how to answer this question even if you explained it to me. (I've asked this question before and got a lot of detailed answers about how to solve the problem, but I'm looking for a solution to a real-world problem and just need the answer itself.)

I have a regular hexagon that is 12 feet across (side to side, not point to point).

How many many square feet are contained in that hexagon?

2007-07-20 15:32:51 · 4 answers · asked by N C 1

3(x-5)+3x=4x+5
3x-15+3x=4x+5
-15x=4x+5
4x=-20x
x=-5

2007-07-20 15:31:35 · 7 answers · asked by LiberT 1

Solve the following by factoring:

a) x^2+6x-16=0


b) 6x^2+42x=0

2007-07-20 15:16:33 · 9 answers · asked by Anonymous

a. Calculate the value of the discriminant of x^2+4x+4
b.By examining the sign of the discriminant in part a, how many x-intercepts would the graph of have? Why?

2007-07-20 15:14:35 · 3 answers · asked by Anonymous

Can you please help me here? How can youy can graph this?
y=[x]
Waht doea that bracket means?

2007-07-20 15:14:03 · 4 answers · asked by Anonymous

In triangle ABC, D is the centroid and M is the midpoint of segment AC. If BD = 10 and DM = 2x + 1, find MB.

2

9.5

4.5

15

2007-07-20 15:09:36 · 6 answers · asked by Anonymous

every car at a certain dealership is either a convertible, a sedan, or both. if 1/5 of the convertibles are also sedans and 1/3 of the sedans are also convertibles, which of the following could be the talta number of cars at the dealership....

ok so the answer is 28
but how do you solve this to get 28?

2007-07-20 15:07:08 · 2 answers · asked by Anonymous

A ladder is leaning against a house and is forming a 60 degree angle with the ground. If the top of the ladder is 24 feet off of the ground, how long is the ladder? Leave your answer in exact form.

48 ft

16 radical 3 ft

24 radical 3 ft

12 ft

2007-07-20 15:06:34 · 7 answers · asked by confused 3

Use order of operations or BEDMAS

2007-07-20 15:04:10 · 16 answers · asked by GREG S 2

2007-07-20 14:57:55 · 10 answers · asked by LiberT 1

25 light hours? This probe I speak of is Nasas longest ever deep space mission...

light travels at 300,000 kilometers per second

2007-07-20 14:49:39 · 2 answers · asked by Anonymous

2007-07-20 14:47:33 · 8 answers · asked by GREG S 2

2007-07-20 14:25:06 · 1 answers · asked by Anonymous

I'm not sure about this question either:

f(x) = -x^2 + k, what is the value of k if the endpoints of the parabola is (-2,0) and (2,0).

2007-07-20 13:40:38 · 4 answers · asked by Anonymous