Mathematics - 2 July 2007

can someone help me.

2007-07-02 05:41:41 · 9 answers · asked by jacquierose1125 2

If p and q are non negative real numbers such that p+q=r then the min value of the expression

p+q+2pq
-------------------
1+p+q+pq

(a)

2r
---------
1+r^2

(b)
r
--------
1+r

(c)
2r^2
-------
1+r^2

(d)
2r
----------
1+r

I want to choose the correct option with less time consuming...........can we apply some trick rather than solving the big eqn ?

what would be the answer .

2007-07-02 05:34:25 · 5 answers · asked by sanko 1

2007-07-02 05:33:46 · 11 answers · asked by crazytrain565 1

The perimeter of a church window is 60 inches. If the window is in the shape of a regular pentagon, what is the length of each side of the window?
A. 12 inches
B. 10 inches
C. 6 inches
D. 8 inches
a?

What is the circumference of a circle with a diameter of 30 centimeters?
A. 188.4 centimeters
B. 47.1 centimeters
C. 94.2 centimeters
D. 9.55 centimeters
c?

The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, how long is each spoke? Round your answer to the nearest hundredth.
A. 7 inches
B. 6.25 inches
C. 13.38 inches
D. 6.69 inches
d?
In order for a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 9.42 centimeters?
A. 3 centimeters
B. 6 centimeters
C. 1.5 centimeters
D. 4 centimeters
a?

2007-07-02 05:21:49 · 10 answers · asked by wolf_in_da_room 1

Can someone give me some simple explanations of symbols used in maths such as !, ^, ∑, ∏, ∫, and any others that are important?

Thanks

2007-07-02 05:12:18 · 13 answers · asked by Cloudburst666 3

A lamina occupies the part of the disk x2+y2≤25 in the first quadrant and the density at each point is given by the function ρ(x,y)=3(x2+y2) .

A. What is the total mass?

B. What is the moment about the x-axis, ∫xρ(x,y)dxdy ?

C. What is the moment about the y-axis, ∫yρ(x,y)dxdy ?

D. Where is the center of mass? ( , )

E. What is the moment of inertia about the origin, ∫(x2+y2)ρ

2007-07-02 05:04:45 · 1 answers · asked by Anonymous

A rectangle has an area given by A=x^2+5x+6.Find expressions for the possible length and width of the rectangle?

2007-07-02 04:42:52 · 8 answers · asked by Berry A 2

i want to clarify whether this result is correct.is it true ?anyone please say

2007-07-02 04:41:09 · 4 answers · asked by Anonymous

What does state the inverse mean? here are some example problems..
1. State the inverse of the following:
a) subtract 27
b) divide by -6
c) mutiply by 14

2007-07-02 04:19:00 · 7 answers · asked by ♥♥♥ 2

(Calc 1): Been struggling with this one - I'll bet I'm missing something easy... Any guidance would be appreciated.

2007-07-02 03:56:55 · 6 answers · asked by Speed Ski 1

A manufacturer claims that the mean lifetime of its bulbs is 1050 hours. A homeowner selects 40 bulbs and finds the mean life time to be 1030 hours with a standard deviation of 80 hours. Test the manufacturer's claim. Use α= 0.05

2007-07-02 03:48:39 · 1 answers · asked by heffie130 1

If the commutative property of multiplication is applied to the first term in the expression xy +xz and the distributive property is applied immediately afterwards, what is the result?

2007-07-02 03:32:43 · 5 answers · asked by Anonymous

Okay this question is random and really meant to amuse me so... fire away!!

2007-07-02 03:22:33 · 15 answers · asked by shadowpharoah 1

integrate w.r.t. x

1/( cosx + cosecx)

2007-07-02 03:21:43 · 6 answers · asked by Alan 2

2007-07-02 03:18:35 · 4 answers · asked by Demetria S 1

2007-07-02 03:16:10 · 4 answers · asked by Demetria S 1

When you subtract 20 p from both sides you get nothing? what does P equal?

2007-07-02 02:52:03 · 11 answers · asked by mike a 1

What percent is $6.50 of $65?
What percent is $20.00 of $65?
What percent is $20.00 of $65?
What percent is $14.00 of $65?
What percent it $4.50 of $65?

I'm trying to create a budget, and I just realized that I get payed a slightly different amount each week. I want to be able to just multiply my pay by the percentage, but I'm so bad with math!

2007-07-02 02:24:58 · 7 answers · asked by ClaireBear 3

2007-07-02 01:45:57 · 1 answers · asked by ronnel_leila 1

please try solving the problems:

1) n:9=52:63
2) 4:7=6:n

tnx

2007-07-02 01:43:28 · 6 answers · asked by Anonymous

r(x)=(e^41x^2)^3

t(x)=3^7x-3

r(x)=e^6x^2-8x+1/x

2007-07-02 01:43:12 · 2 answers · asked by poncg004 1

s(x)=log_3(x^2+5x)

2007-07-02 01:01:44 · 3 answers · asked by latina_babygirl002 1

g(x)=(6x^2-8x)ln(x)

2007-07-02 00:37:31 · 5 answers · asked by latina_babygirl002 1

on a certain day 2200 people enter the fair and $5050 is collected. How many children and how many adults have attendted

2007-07-02 00:36:58 · 7 answers · asked by finny 2

Uh, it's for my Algebra research. I can't find it in the search engine. They mostly give off way far-off answers! Please INSERT link.

2007-07-02 00:04:03 · 5 answers · asked by Brielle 3