Mathematics - 19 July 2007

Right now, I am taking algebra three (a continuation of algebra two for my school) I originally signed up for trig, but my school put me in statistics. I was wondering if that class is supposed to be the class I should be in, or if I should switch. If I should switch, should I switch to pre calculus or trigonmetry and why?

2007-07-19 16:20:01 · 3 answers · asked by doll 2

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2007-07-19 16:16:25 · 3 answers · asked by mrhirschibar 1

?????

2007-07-19 16:05:59 · 5 answers · asked by mrhirschibar 1

The figure below shaded in gray is that of a trapezoid having base length a and slant height b.

http://i181.photobucket.com/albums/x85/ctti_3/untitled-28.jpg

2007-07-19 16:00:14 · 2 answers · asked by sdt3 1

1. (2x-1)^2


2. Which of the following is a factor of 4-(x+y)^2?

2007-07-19 15:56:01 · 4 answers · asked by Rox 1

I want to know what 45g of cereal (special k to be exact) is in cups or ml.

2007-07-19 15:54:40 · 7 answers · asked by Hollie721 1

there are 69 more patrons in cinema III than in cinema IV, how many patrons are there in cinema III ?

2) The average mass of Ravi, Sanur & Tarman is 37 kg. Ravi & Sanur together have an average mass of 34kg while Sanur & Tarman together have an average mass of 35kg. What is the average mass of Ravi & Tarman ?

2007-07-19 15:47:37 · 6 answers · asked by Lim S 3

Thanks for all your help.

Factor Each Expression.

1. x2 + 5x – 14
2. x2 + 7x + 12
3. 3x2 – 10x + 8
4. 4x2 +20x + 25
5. 3x2 + 7x – 6
6. 25m2 - 4
7. 7x2 + 19x + 10

______________________________

Solve Each equation by factoring

8. (x + 13)(x + 1) = 0
9. x2 + 10x = - 21
10. x2 + 44 = 15x
11. 4x2 – 4x –15 = 0
_______________________________

Word Problems

Word problems ( 5 points each)
12. Suppose you are building a box of volume 32 in.3. The aquarium will be 1 ft. high. The base will be
a rectangle with the length 4 ft more than the width. Find the dimensions of the base.
Length: Width:

13. A rectangular poster has an area of 30 in.2. The length of the poster is 7 in. more than twice its
width. Find the dimensions of the poster.

Length: Width:

Bonus: Solve the equation by factoring. Show all work for credit. Box your answer. ( 5 points)
24r2 – 66r – 18 = 0

This is Straight off a test I need the awnser key to review with.

2007-07-19 15:44:07 · 2 answers · asked by Allen 1

3x^2 + x - 1 = 0

Explain which method (or methods) may not be applicable at all times and why. Is the solution a set of real numbers, imaginary numbers, or complex numbers?

2007-07-19 15:37:48 · 2 answers · asked by Arthur M 1

change x^4 - xy - 2y^4 = 3y from polar to cartesian (rectangular)

I tried working it out but it doesn't look right. Am I suppose to solve for r? or can you leave it as something else? I am a little confused.

I got
(rcos(θ) )^4/rsin(θ) - r cos(θ) - 2(rsin(θ))^3 = 3
I don't know what to do after that.

Help would be appreciated. Thanks

2007-07-19 15:20:28 · 3 answers · asked by Mark 2

A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the return trip. If the round trip took 4.9 hours, find the distance to the nearby town. [Ten points for the correct algebra equation and five points for solving the equation.

2007-07-19 15:19:06 · 5 answers · asked by bikerbabechic13 1

Determine the number of ways of selecting four letters from the word parallelogram, without disregard for the order. The answer is 150

Thanks

2007-07-19 15:18:03 · 2 answers · asked by Icobes 2

DONT COMPLAIN JUST ANSWER


2. Use only the numbers 2,3,6,11, 15 in number sentences that equal 3,7,1,6, 2. Use any operations.

3.In the 6th, 7th,8th,9th games of the season, a player scored 23,14,11, 20 pts respectfully. Her points per game average was highrer after 9 games than her 1st 5 games. If her average after 10 games was greater than 18, what is the least number of points, she could have scored in the tenth game?

2007-07-19 14:46:14 · 5 answers · asked by Anonymous

a) f(x) = (sec(x)(tan(x) +sec(x))) / (sec(x) + tan(x))

b) g(x) = [(x^2+1)/(x^2-1)]^(1/4)

what are the derivatives on these? any help would be great!

2007-07-19 14:24:51 · 1 answers · asked by Anonymous

y = ln(x^7sin^2x)

help?

2007-07-19 14:16:18 · 2 answers · asked by Anonymous

Find the equations of both the tangent lines to the ellipse x^2 + 4y^2 = 36 that pass through the point (12,3).

y = (horizontal tangent line)
y = (non-horizontal tangent line)

any ideas?

2007-07-19 13:46:10 · 6 answers · asked by Anonymous

3. Assume that you are a dealer in PC and have hired a new sales agent for a 2-week trial period. At the end of the two weeks, you must decide either to release him or place him permanently on the payroll. Based upon past experience, you estimate that given your prospective sales agents’ experience, personality and other traits, there is a 20 percent probability he will be a superior sales agent, a 70 percent probability he will be an average sales agent, and 10 percent probability that he will be an inferior sales agent. A superior sales agent is one who sells a PC to 40 percent of his customers, an average sales agent sells to 30 percent of his customers, and an inferior sales agent sells to 20 percent of his customers. After the 2-week period, you note that he has demonstrated PC to a total of 20 customers and has sold PC to 8 of them. Based upon all the information you have, should you retain the man permanently in your employment if your policy is to employ only average or su

2007-07-19 13:36:12 · 3 answers · asked by bhen 3

1) 20 4/9
- 12 5/9

2) 6/21 x 3

3) 3 ÷ 4/5

4) 13 - 7/8

5) 4 3/4 x 8/12

6) 7/10 ÷ 2 1/3

7) 1/7 x 1/6

8) 5/11 ÷ 5/2

9) 2/3 ÷ 3

10) 1 1/8 ÷ 3/3

11) 1/2 x 3/8

12) 3/5 ÷ 1/5

13) I painted 1/5 of my house this weekend and 2/5 last weekend. How much have I painted?

2007-07-19 13:30:18 · 4 answers · asked by Kevin. 2

First number is twice as large as the third.
First number and the third number are equal to the second number.
Half of the second number and the whole of the third equals the first number.

2007-07-19 13:21:24 · 3 answers · asked by MathBoy 2

Find the antiderivative of y=7e^3x

2007-07-19 13:10:36 · 1 answers · asked by Lakers 1

To save on all those tedious Transverse Mercator or Equal area, or Lambert projections. Argghhhhhhh!

2007-07-19 13:04:21 · 6 answers · asked by Anonymous

solveing and equation

2007-07-19 11:44:56 · 7 answers · asked by martina c 1

All help is appreciated. Help meaning anwsers.

x²+5x-14

x²+7x+12

3x² - 10x + 8

4x² + 20x +25

3x² + 7x - 6

2007-07-19 11:41:13 · 6 answers · asked by JordanG 2

Find the equations of both the tangent lines to the ellipse x^2 + 4y^2 = 36 that pass through the point (12,3).

there's a horizontal and non-horizontal tangent line...and i have no clue how to find it...

2007-07-19 11:36:47 · 6 answers · asked by Anonymous

Identify all vertical and hoirizontal asymptotes of the graph of each rational function

2007-07-19 11:22:30 · 5 answers · asked by algebra 3 1

2007-07-19 11:19:30 · 12 answers · asked by deannahndrsn 2

Determine whether each function below is a rational function. If so, find the domain. If the function is not rational, state why not?
PLEASE HELP ME OUT

2007-07-19 11:19:23 · 3 answers · asked by algebra 3 1

Solve the inequality

x^4 - x ≤ 0

2007-07-19 11:12:07 · 5 answers · asked by Just.Dako. 2

change to polar form

1) 2x-5y^2=7

2) x^4+ xy - 2y^4 = 3y

change to rectangular form

3) r= 4cos(2theta)

4) r= 3 - 3sin(theta)

These 4 problems are giving me some trouble. Can someone help me out on these and explain a little?

Thanks,
Mark

2007-07-19 11:04:39 · 4 answers · asked by Mark 2

I was told at her consultation day that her grades for maths were very good that they cosidered her to be gifted, I would like to know how I could encourage this in a positive way that would interest her, she's in her 1st year at high schhool.

2007-07-19 11:00:54 · 8 answers · asked by Wide Awake 7