Mathematics - 21 June 2007

I need the symbol for 'the sum of' which is kind of a jagged E where can i get it? Thanks

2007-06-21 22:42:52 · 9 answers · asked by tward1989 2

can someone give me a step-by-step soln to this qns pls?
btw the ans is: [(tan x) / 2] + c

2007-06-21 22:19:40 · 3 answers · asked by me 1

2007-06-21 21:42:30 · 7 answers · asked by Anonymous

Eliminate parameter and write corresponding rectangular equation.

x=sec theta , y=tan theta
- i dont know where to start

2007-06-21 21:25:28 · 4 answers · asked by fcb10121 1

answer this quesiton?

2007-06-21 20:37:39 · 10 answers · asked by Anonymous

2007-06-21 20:31:11 · 5 answers · asked by Anonymous

one petal of r=cos 5 theta

2007-06-21 20:21:16 · 2 answers · asked by Anonymous

(x^2+y^2)^2-9(x^2-y^2)=0

2007-06-21 20:18:09 · 3 answers · asked by Anonymous

[(1000-x)/x]*2=0.06
so
[(1000-x)/x] = 0.06/2

[(1000-x)/x] = 0.03

but how can i find the x?

Thanks.

2007-06-21 20:07:58 · 8 answers · asked by Anonymous

Find the inverse function of f(x)=x^v+x-1

2007-06-21 20:01:31 · 1 answers · asked by HELLO!!!!!! 1

What number is three less than a multiple of ten, two more than a perfect square and has two digits?

Explain your answer please!!

2007-06-21 19:17:34 · 7 answers · asked by Alena M 2

What number is three less than a multiple of ten, two more than a perfect square and has two digits?

2007-06-21 19:12:38 · 4 answers · asked by Alena M 2

2007-06-21 19:08:02 · 5 answers · asked by Chocolate Strawberries. 4

The height in metres of two boxes are 2x and the square root of (3x-2) . The combined height is 3x. Calculate the maximum height of each box.

2007-06-21 18:58:09 · 4 answers · asked by Anonymous

2007-06-21 18:50:13 · 4 answers · asked by just_a_girl_interupted 1

how do i factor out 4x^2-100

2007-06-21 18:45:31 · 6 answers · asked by Anonymous

2007-06-21 18:44:27 · 3 answers · asked by kenneth_welch26 1

aˣ = x + b

2007-06-21 17:56:51 · 2 answers · asked by Zax 3

Graph the inequality.
y > 1

2007-06-21 17:51:30 · 2 answers · asked by wiggit17 1

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 30 degree. From a point 1500 feet closer to the mountain along the plain, they find that the angle of elevation is 34 degree.
How high (in feet) is the mountain?

2007-06-21 17:44:16 · 2 answers · asked by ? 1

2007-06-21 17:21:20 · 7 answers · asked by thepaladin38 5

Don't tell me we did the old fasion way, like ²ing #'s, radicals, and graphing.


DID WE REALLY WENT OLD SCHOOL?
Do you think school's are going to easy, and we should throw out the calculators, because we rely on them too much, for us to even calculate like we did in the old ways? (WHich is more effective?)

What if we dont have calculators, and it was never invented?

2007-06-21 17:20:37 · 13 answers · asked by Anonymous

Write the equation of the line with x-intercept (12, 0) and y-intercept (0, 4).

2007-06-21 17:07:21 · 6 answers · asked by wiggit17 1

an investor selects ten stocks from different industry sectors on the basis that they will move independently over in the next year. On past experience, there is a 20% chance that any one stock will decline over the next year. What is the chance that four or more of the stocks fall in price over the next year?


Don't answer. I just want to remember what field of mathematics to use.

2007-06-21 17:05:53 · 7 answers · asked by presidentrichardnixon 3

2007-06-21 17:01:37 · 4 answers · asked by aoc10010001100 2

2007-06-21 16:58:07 · 9 answers · asked by matcav2002 1

contained in the beaker was vapourized by heating and due to this, the percentage of salt in the beaker increased m times. if it is known that after the content of the beaker was poured into the flask, the percentage of salt in beaker increased by x%, find the orignal % of salt in the flask.

ans is
(9m-1x%)/(m+1)

but how to solve ,
and in answer % sign is with x, or ? i dont know how to get.

2007-06-21 16:55:31 · 2 answers · asked by Anonymous

third gallary is made operative. with this, the output of the mine became half as large again. what is the capacity of the second gallary as a percentage of the first , if it is given that four-month output of the first and third gallaries was the same as the annual output of the second gallery ?

plz. explain in detail.
ans is 64% but how to get this answer.

2007-06-21 16:48:26 · 2 answers · asked by Anonymous

At time t = 0 hours, there are 500 bacteria in a favorable growth medium. 5 hours later, there are 2000 bacteria. Assuming exponential growth, what is the growth constant "k" for the bacteria?

A 0.155
B 2.543
C 0.135
D 0.277
E 1.467
F 1.866

2007-06-21 16:48:17 · 2 answers · asked by Anonymous

2007-06-21 16:41:29 · 8 answers · asked by Anonymous