Mathematics - 19 November 2007

EVALUATE THE FUNCTION
F(2)=3/2(2)+6

2007-11-19 14:18:31 · 2 answers · asked by danny 2

i am trying to study for a test and these 4 problems got me worried. they are even numbers from my book so i cant even look the answer up in the back of the book and work backwards. please help and explain what you did. thank you!

1. ∫(x+3)/((x^2)+6x+1)dx

2. ∫(x^3)/((1-x^8)^(1/2))dx

3. ∫(sec^(2)(x))*(e^tanx)dx

4. ∫x(1-2x)^(1/2)dx

if you can help with any of them please do. thank you!

2007-11-19 13:51:58 · 2 answers · asked by fr3shfr0st 1

In a right circular cone of volume 'V' (no..really !!) find the rate of change of volume,'V' with respect to height 'h', and find the rate of change of volume with respect to radius (which stays constant).
Obviously is a question of finding dV/dh and dV/dr, but I'm well outa touch and I've forgotten..and can you use f.p.'s?

2007-11-19 13:51:18 · 1 answers · asked by c0cky 5

(1 divided by (1 minus 1 divided by a)). A is an integer.

2007-11-19 13:46:19 · 6 answers · asked by dr.whooo 2

A plain mat is placed around a picture measuring 28 cm by 36 cm so that the width of the mat is equal on all sides. The area of the mat if 3/4 of the area of the picture. what would the width of the mat be??

2007-11-19 13:39:08 · 2 answers · asked by m 1

2007-11-19 13:37:09 · 11 answers · asked by libra r 1

A = pi (square root sign) w / r


sorry i dnt have the symbols / means over !! hope u can help

2007-11-19 13:37:09 · 3 answers · asked by Anonymous

in a sequence of five integers, the 3rd integer is the sum of the previous 2. the 4th integer is the sum of the previous 3 and the 5th integer is the sum of the previous 4. if the sum of the five integers is 248, what is the 3rd integer in the sequence.??

2007-11-19 13:36:04 · 2 answers · asked by Anonymous

My sisters math problem, it says "evaluate the expression", and thats it, which means simplify were guessing.

1. 27 4/3
she started to evaluate it, and has
27 to the third power inside of the square root symbol,
with a three over top of the check part.
Please help! I'm gussing that the teacher wants you to simplify it using sqare roots, obviously.

Thanks!

2007-11-19 13:34:45 · 8 answers · asked by lɨνɛ ɦɩɢh ☮ 4

2007-11-19 13:15:55 · 1 answers · asked by Anonymous

The school cafeteria sold 300 hamburgers on Wednesday. The hamburgers are made with cheese, lettuce, and bacon. 45 of the hamburgers had cheese, lettuce, and bacon. 65 had bacon and lettuce. 80 hamburgers had cheese and lettuce and 100 had bacon and cheese. 60 hamburgers had just bacon and 85 hamburgers did not have cheese. How many hamburgers had just cheese on them?

2007-11-19 13:13:09 · 26 answers · asked by misha61615 2

Mark drove 150 mi to visit Sandra. Returning by a shorten route, he found that the trip was only 130 mi, but traffic slowed his speed by 6 miles. If the two trips took exactly the same time, what was his rate on the return trip?
Avail answers are: 40,39,36,25 Thanks!!

2007-11-19 13:03:20 · 4 answers · asked by mathidiot 1

2007-11-19 13:01:03 · 6 answers · asked by Anonymous

Explain why Tony's mistake was. Then find the correct answer.

2007-11-19 12:57:08 · 4 answers · asked by sades0308 2

Use exponents to write the prime factorization of this number.

2007-11-19 12:55:41 · 4 answers · asked by sades0308 2

2007-11-19 12:53:37 · 3 answers · asked by sades0308 2

2007-11-19 12:44:49 · 4 answers · asked by Lisa S 1

whats the formula for an area of a triangle. the formula must be for a triangle thats not right nor isocellies.... its for a trig question so it might include a sinx in the formula.

2007-11-19 12:41:40 · 9 answers · asked by john doe 2

The sum of my ones digit and tens digit is also 10. However, my ones digit is greater than my tens digit. I am a prime number less than 30. What number am I?

2007-11-19 12:37:16 · 3 answers · asked by sades0308 2

the vectors 39.5cm at 15.0 degrees and 23.0cm at 64.0degrees both start from the origin. Both angles are measure counter-clockwise from the x-axis. The vectors form 2 sides of a parallelogram

a) find the area of the parallelogram

b) find the length of its longer diagonal.

2007-11-19 12:33:03 · 1 answers · asked by Anonymous

A radar is tracking an object falling onto earth away from it, and three observations are successively recorded and given in
the following table:

[Horizontal distance (m) : 1 2 3 ]
[Vertical distance from earth : 1948 1860 1760 ]

Choosing the horizontal distance as input variable, use polynomial interpolation to estimate the horizontal disance of the object from the radar when it hits the ground.

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Now I would appreciate if you could tell me how I can do it?
I tried my textbook and I dont understand it, "find an equation that fits the data in the table" how? So please guide me through this question. Thanks

2007-11-19 12:32:16 · 3 answers · asked by Anonymous

you can use addition, subtraction, multiplication, and division, but you can only use each number once. must equal 24

2007-11-19 12:30:47 · 3 answers · asked by ashley 2

When Lauren and Johnny worked together to rake the leaves in their backyard, it took them 6 hours. The last time the leaves needed raking, Johnny worked alone, and it took him 10 hours. If Lauren raked the leaves by herself, how long would it take her? (Only an algebraic solution will be accepted.)

2007-11-19 12:26:12 · 4 answers · asked by Anonymous

^2 means to the 2nd power.
/ is the fraction devider like 1/10 is 1 over 10
sqrt is SquareRoot EX: sqrt -4 is The squareroot of -4

....................................................................................
Solve the quadratic equation by factoring.

1. 4x^2 - 25 = 0

2. -9x^2 + 12x - 4 = 0

3. 6 = x^2 - x
.......................................................................
Simplify the expression.

4. i + 3 + sqrt -4

5. (-5 - 8i) - (-4 - 8i)

6. 2+i/2-i (That's 2 + i over 2- i)
...........................................................................................................
Use the quadratic formula to solve the equation.

7. x^2 - 3x = -5

8. 2x^2 - 8x = -16

2007-11-19 12:19:26 · 10 answers · asked by net_phantom16 2

express the number 25 as a prodcut of two complec conjugates, a + bi and a-bi in 2 different ways, with a and b being natural numbers?

2007-11-19 12:19:08 · 4 answers · asked by john c 1

please help now and fast and soon

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

2007-11-19 12:14:22 · 1 answers · asked by ace_ofgabriel 1

2007-11-19 12:12:57 · 8 answers · asked by funnylady4u2 1

Given that y-axis is a tangent to the circle with radius 5 units. If the cirlce passes through the point (1,-4), find the possible equation of the circle.

2007-11-19 12:12:43 · 1 answers · asked by Stormy Knight 1

I have to take Statistics, and would like to become more familiar with my calculator. Thanks!

2007-11-19 12:09:43 · 4 answers · asked by Mike's Girl 3