Mathematics - 12 December 2007

How many of each tiles are there?

My son had a total melt down with this question. I tried and tried to explain and here was my explanation...however was I correct?
600 divided by 2 is 300
so 300 plus 80 is 380 square tiles
so 300 minus 80 is 220 triangular tiles
total tiles is 600
Did I show him correctly?

2007-12-12 13:56:05 · 6 answers · asked by OMGiamgoingNUTS 5

2007-12-12 13:55:09 · 38 answers · asked by beachblondie 1

F(x)=sqrt(x) a=1
My prof put (1/2)(x+1) as the answer, but I did not get that.
I used
F(a)+F'(a)(x-a)
1+(1/2)(x-1)
1+(1/2)x-(1/2)
(1/2)x+(1/2) is what I got. Am i doing something wrong?

2007-12-12 13:48:45 · 4 answers · asked by m_carl 1

How many ordered quadruples (w,x,y,z) of positive integers are there with w+x+y+z=40

2007-12-12 13:47:43 · 1 answers · asked by Anonymous

I am doing a report and i am looking for some ideas. specific details are best, please!

2007-12-12 13:36:50 · 4 answers · asked by Bella 1

(x^6 - 4x^5 - 7x^3) / (2x^3)

Please show your work. I really want to learn something.

2007-12-12 13:30:13 · 7 answers · asked by Anonymous

when it has the points S (0,1), T (4,7) and U (8,-3). What formula would you use to first find the altitudes and then the coordinates of the orthocenter?

2007-12-12 13:27:34 · 1 answers · asked by Anonymous

I have to review for an assessment test for college and I have absolutely no rememberance of what these mean. Does consistent mean they have the same solution times infinity?

Some questions I'm working on:

Question 1:
x + 2y = 9
2x - 3y = 4

Question 2:
x - 9 = y
y+ 2 = x

Question 3:
x + 3y = 20
x + 6y = 40






Just curious as to how I solve and determine what they are. Do I use substitution or elimination? Any help would be greatly appreciated. Thanks.

2007-12-12 13:25:11 · 1 answers · asked by Anonymous

If the length is a randomly chosen integral number of meters, what is the expected area of this enclosure?

2007-12-12 13:20:17 · 3 answers · asked by futuramakif 2

What's a polynomial equation with all complex roots? I don't quite understand what a coplex root is.

2007-12-12 13:19:10 · 4 answers · asked by celeron78 2

A ball is thrown upward at 56 ft per second. An equation that gives the height h of the ball above the ground after t seconds is
h=56t-16t^2.

After how many seconds will the ball hit the ground?

2007-12-12 13:11:55 · 2 answers · asked by yellowducks 1

1) its a right triangle. leg = 1, leg=2, hypotenuse= x

2) also a right triangle. leg= 4, leg= X, hypotenuse= 8

2007-12-12 13:10:53 · 8 answers · asked by : ) 2

Suppose f:R --> R is continuous and has a fundamentl period.. Show that g(x) .= f(x^2) is not periodic on R.

2007-12-12 13:02:28 · 2 answers · asked by Adrian 1

i need to know how to make a 15 degree angle with a compass bisecting a 30 degree angle?

2007-12-12 12:59:53 · 1 answers · asked by bihacmi 1

Use a suitable change of variable to find the area of the region R bounded by the graphs of y=x^2, y=4x^2, y=sqr(x), y=(1/2)sqr(x)

2007-12-12 12:44:45 · 1 answers · asked by azulita 3

The sequence frac(sqrt(n)), n = 1, 2, 3....., where frac(u) means the fractionary part of u.

Thank you

2007-12-12 12:43:15 · 1 answers · asked by Adrian 1

2007-12-12 12:24:56 · 5 answers · asked by Mishelle B 1

Refresh my mind please

2007-12-12 12:18:28 · 8 answers · asked by I wish I could......... 4

2007-12-12 12:17:50 · 6 answers · asked by Anonymous

Solve 2^(3x - 6) = 8

2^(3*3 - 6) = 8

2^(9-6) = 8

2^(9-6) = 8 is equivalent to 2^(3)



My teacher said i solved this through the process of elimination and asked how to solve if I didn't know x = 3.

What does she mean - please explain .

2007-12-12 12:14:28 · 7 answers · asked by Jaz 'ma' Taz 2

2007-12-12 12:11:59 · 7 answers · asked by gingerpie13 2

please explain
hint- you have to use "trial and error"

162y^5 - 32y

and

x^4 - 50x^2 + 32y

2007-12-12 12:03:15 · 5 answers · asked by thiswasjustforphysics 3

A professional golfer teed off at the 13th hole of the U.S. Open. It took 0.0020 seconds for the head of her club to travel the last 10 centimeters (cm)before the club hit the ball. The velocity of the club can be calculated with the following formula, where V is the velocity in kilometers per hour (km/h), d is the distance the club travels in centimeters (cm), and t is the time in seconds (s):


V = d/t x 36/1000


What is the velocity in km/h of her club during this swing?

2007-12-12 12:00:09 · 3 answers · asked by CandyxAcid 3

30t, and ,40t (the t in 40 is squared)
6, and ,9t
16k,and ,40k (the k in 16 is squared)
9m, and ,15n


ty

2007-12-12 11:54:57 · 1 answers · asked by Rachel P 1

Use linear combinations to solve the linear system
2v=150-1u
2u=150-1v

2007-12-12 11:52:54 · 4 answers · asked by Anonymous

it says factor.

-2(m+3)-(m-2)
do you distribute? is 2 positive???
is it times -1 (m-2) or + -m-2

5m^3-20m^2+25m
(GCF is 5m right?, then how do you factor the trinomial?)

(x+4)^2 - x^2
(after distribute, does the x^2 cancel out?)

2007-12-12 11:48:00 · 9 answers · asked by o.O 2

Here is a 5th grade math problem . Please help.

The product of two numbers is 128 and their quotient is 8. What are the numbers?

2007-12-12 11:44:58 · 5 answers · asked by whatever 3

2007-12-12 11:28:03 · 2 answers · asked by Ichabod 1

2007-12-12 11:25:21 · 6 answers · asked by mopargrl440 2

a population of animals oscillates sinusoidally throughout the year. the population has a high of 4200 on march 1 and reaches a low of 1700 on september 1. the population returns to a high of 4200 the following march 1. find a forumal that gives the population,P, as a function of time, t, measured in months since the beginning of the year. (this means t=0 represents Jan1, t=1 represents Feb1..etc.)

2007-12-12 11:22:33 · 1 answers · asked by Anonymous