Mathematics - 19 October 2007

Given that a, b, and c are real numbers that satisfy:

a = sqrt(c^2 - (56/5)^2) + sqrt(b^2 - (56/5)^2)
b = sqrt(a^2 - 144) + sqrt(c^2 - 144)
c = sqrt(b^2 - (168/13)^2) + sqrt(a^2 - (168/13)^2).

Find the value of (a+c)/(2b)

2007-10-19 15:34:55 · 2 answers · asked by absird 5

2007-10-19 15:29:37 · 2 answers · asked by Ladan T 1

How to Integrate
1)x^2 tan^-1 x dx?(*x is not the power of tan)
2)xln(9+x^2)dx?

2007-10-19 15:23:05 · 3 answers · asked by Edison T 1

i am given the vertex of parabola as V(3,-1), axis parrallel to y-axis and the line y= - 4x+7 is a tangent to the parabola

how to find the equation

in (x-h)^2 = (y-k) form

2007-10-19 15:11:31 · 2 answers · asked by Anonymous

1/x+1 + 2/x-1 = 3/x+1

2007-10-19 15:03:22 · 18 answers · asked by Anonymous

cant figure it out for an elasticity problem im trying to solve.

2007-10-19 14:52:10 · 3 answers · asked by sportzblock 1

the golden ratio- the ancient greeks thought that the most pleasing shape for a rectangle was one for which the ratio of the length to the was 8 to 5, the golden ratio. if the length of a rectangular painting is 2 ft.longer than its width, then for what dimension would the length and width have the golden ratio?

2007-10-19 14:48:20 · 4 answers · asked by mormar 1

Use the following equations to construt an equation for w that involves only the variables a and b.

xw = yt

x/a = b

a^3y = b

a^2 = tb .........your answers help me understand the concept. Thank you so much!

2007-10-19 14:42:32 · 4 answers · asked by Anonymous

this is sooo confusing me all u mathmaticians out their plz help me


Points a,b,c,and d lie on a line. in that order
if AB =3.4,AC-8, CD=2 WHAT IS BD?

2007-10-19 14:42:13 · 5 answers · asked by Anonymous

i cant figure it out for solving an elasticity problem, can anyone help me out?

2007-10-19 14:28:18 · 6 answers · asked by sportzblock 1

Can someone give me the simplest, yet MOST explanatory reason how to solve these equations....

1. 6-3(6-3)

I know the Order of Operations--but I'm confused. Once I get to 6-3(3)........then what? Please explain this thoroughly. I know the answer is 9, but how?

2. 9 - 3(-3 -1)

Once I get to 9-3 (-4).......what do I do? I should multiply but....what do I multiply first, ect.,? I know the answer is 21, but how???

Thanks!

2007-10-19 14:20:19 · 7 answers · asked by Leah C 1

2007-10-19 14:19:06 · 10 answers · asked by Anonymous

A 3-digit number, when rounded off to the nearest ten and the nearest hundred, gives 1000. what is the greatest possible value of this number?

2007-10-19 14:00:52 · 7 answers · asked by mong 3

Can someone help me with this problem?

Using the Power Rule, show that the slope of the graph y = sqrt(x) at any point x is NOT halfway between the slope of the forward secant on [x, x + h] and the slope of the backward secant on [x−h, x].

2007-10-19 13:54:12 · 1 answers · asked by Avi J 1

1. -sqrt[]3
2. -2
3. -1/2
4. -sqrt[]3/3

2007-10-19 13:49:46 · 1 answers · asked by nevapullout 1

1. -10/3
2. sqrt[]3/2
3. -1/2
4. -sqrt[]3/2

2007-10-19 13:45:28 · 1 answers · asked by nevapullout 1

2007-10-19 13:36:30 · 8 answers · asked by wassuped 1

2007-10-19 13:34:38 · 17 answers · asked by 42 2

1. sqrt[]3/3
2. -sqrt[]3/2
3. 5/12
4. 1/2

2007-10-19 13:30:52 · 1 answers · asked by dilljam1977 1

2007-10-19 13:29:23 · 3 answers · asked by Katherine T 1

1. -sqrt[]3
2.-1/2
3. -sqrt[]3/2
4. -2

2007-10-19 13:28:10 · 2 answers · asked by dilljam1977 1

Solve for x: Log10^7= Log10^x - Log10^2

2007-10-19 13:25:48 · 4 answers · asked by Anonymous

if the line joining p1(2,3) andp2(7,9) is perpindicular to the line joining q1(8,k) and q2(2,4) find the value of k. how do u find the answer and what is the answer.....thank u very much

2007-10-19 13:22:06 · 2 answers · asked by Anonymous

like is there an easy way to know how to simplify

√20
√72

2007-10-19 12:35:59 · 13 answers · asked by Anonymous

2007-10-19 12:22:48 · 14 answers · asked by Esmeralda 2

determine a quadratic function F(x)=ax^2 + bx +c if it admits a maximum equal to 9 and passes through the points (1,-7) and (-1,-27)

if you would be kind enought to show the steps so that i can understand that would be really nice thank you

2007-10-19 12:17:17 · 4 answers · asked by ashtondelpiero 1

Suppose we have the following Cost and Revenue Functions:

C(x) = 2x2 + 90 and R(x) = x2 + 20x

How might we create a Profit Function P(x)? What would it be?

Interpret P(8)=?

P(11)=?

P(13)=?

P(15)=?

2007-10-19 12:12:00 · 5 answers · asked by mlsz28 1

The linear approximation (tangent line) at x=0 to (8+2x)^(1/2) is A+Bx
where A=_____
and where B=_____

2007-10-19 11:57:50 · 2 answers · asked by Anonymous

x^2 + 16x + a= (X+b)^2

Find a

I have no clue how to do this.

2007-10-19 11:56:12 · 2 answers · asked by In Testimony Whereof 3

2007-10-19 11:52:59 · 1 answers · asked by greenheaven 1