Mathematics - 30 July 2007

2007-07-30 08:09:48 · 11 answers · asked by penn_state21 1

2007-07-30 08:09:37 · 7 answers · asked by Anonymous

1.) sinx= cosx on [0, 2pi]
2.) sin2x = 1/2 on [0, 2pi]
3.) sin3x= sqrt(3)/2 for all x
4.) cos4x= -1/2 for all x
5.) tan2x=0 on [pi/2, 3pi/2]

2007-07-30 07:54:32 · 4 answers · asked by b country90 1

I have an AP Calculus summer assignment.

Here are the questions: (1.) y=4sin(2x)+1
(2.) y=-3tan(pie(x))
(3.) y=cos²(x)
(4.) -3sec(-6x)+2

2007-07-30 07:22:04 · 3 answers · asked by b country90 1

and this one too : If cos A = -7/25 and sin B = 4/5 with A in QIII and B in QII, find ht eexact value of the following expressions.
sin A, tan B, cos(A+B), sin2B, cos A/2

2007-07-30 06:46:42 · 2 answers · asked by BobLong 1

simplify this expression.

2007-07-30 06:37:17 · 9 answers · asked by Anonymous

*continuation of the question: the sphere if the possible error in measurement of circumference is 0.6 cm. Give your answer in two decimal places.
The answer should be 2.22%.

2007-07-30 06:11:05 · 3 answers · asked by Karen 2

2x+3y=??
good luck

2007-07-30 06:08:17 · 5 answers · asked by hjhafhag 1

hello;
i need to learn calculus (integration and differentiation) by my self, do you konw which book i can read ?
thanks

2007-07-30 05:45:13 · 5 answers · asked by sndbad 1

Determine whether each of the following is a trinomial square.

1. x^2-14x + 49

2. x^2-10x - 25

3. 36x^2-24x+16

4. 16x^2-40xy+25y^2

5. 9x^2 - 36x + 24

Factor completely. Remember to look first for a GCF and to check by multiplying.

1. x^2+4x+4

2. x^2-20x+100

3. 64+16x+x^2

4. 9x^2 - 42x + 49

5. 36x^2+96xy+64y^2

2007-07-30 05:42:43 · 8 answers · asked by Sunshine 1

perform the indicated operation

2007-07-30 05:39:11 · 10 answers · asked by Anonymous

2007-07-30 05:37:26 · 9 answers · asked by damilola o 1

2007-07-30 05:16:14 · 4 answers · asked by Anonymous

a-5 X a-3 X a-2 = ?

the X = times sign

the numbers are exponents and the minus signs are negative signs!!

help me with what that equals!!

2007-07-30 05:12:49 · 3 answers · asked by Kwan L 2

find the dimensions

2007-07-30 05:08:50 · 5 answers · asked by Anonymous

solve by setting up a linear system

2007-07-30 05:07:11 · 11 answers · asked by Anonymous

I don't know of any other first world country that still uses the imperial system. How come america never made the switch. Joke all you want but metric makes alot more sense. 1 liter water = 1 kilogram. The conversions between measurments are easy everything is base ten. 16 ounces in a pound 2000lbs in a ton wtf? Is there a good reason the switch was never made?

2007-07-30 05:05:26 · 9 answers · asked by Surger1 3

Let S be a closed surface in R^3 and let ds be elementary area vector, that is, normal to S at a given point of S, oriented outwards and with magnitude |ds| equal to the elementary area. How can we show that Integral (over S) ds = 0?

Thank you

2007-07-30 04:50:43 · 2 answers · asked by Liza 1

can you please solve theses inequality's if posible
1. -2 > 5 + y

2. /j-7/ - 1 < 3 5/6

3. /3y + 1/ - 6 = -2

2007-07-30 04:48:24 · 4 answers · asked by sailorsoccer07 1

Prove that (1 + tan x - sec x)( 1 + cot x + cosec x) = 2
thanks!

2007-07-30 03:59:24 · 7 answers · asked by N.y.Rych 1

i don't get it...i have the answer key though.. please help.

determine the first 5 terms of the sequence.

T1=1, Tn-1+n, n>1
^the n-1 is tiny too :D
^the 1 up there is tiny

ya so please help!

the answer is 1, 3, 6, 10, 15 ( i think the answer key is right... )

2007-07-30 03:52:46 · 3 answers · asked by TT 4

http://img73.imageshack.us/img73/558/math2ek3.jpg

Picture included of rhombus/units

2007-07-30 03:25:07 · 7 answers · asked by Adrienne W 1

http://img503.imageshack.us/img503/9428/math1iw3.jpg

Picture of the parralleogram and units of measure.

2007-07-30 03:22:11 · 5 answers · asked by Adrienne W 1

Solve algebraically and check your potential solutions:
√x+2-x=0

2007-07-30 03:10:13 · 6 answers · asked by DEE H 1

Find the missing diagonal of the rhombus that has an area of 12 feet squared and one diagonal of 6ft.

2007-07-30 03:09:34 · 3 answers · asked by zerokun4 1

Find the area of a rhombus with diagonals of 4 feet and 5 feet.

2007-07-30 03:09:04 · 5 answers · asked by zerokun4 1

Jon’s backyard is in the shape of a rectangle and measures 200 feet by 140 feet. In his backyard he has a rectangular pool that measures 30 feet by 15 feet. Jon’s entire back yard is grass except for the swimming pool. What is the total area of Jon’s back yard that has grass? Do not forget to show your work.

2007-07-30 03:03:31 · 8 answers · asked by zerokun4 1

Two squares are similar. The ratio of a set of sides is 2:4. What is the ratio of their areas?

2007-07-30 02:54:51 · 5 answers · asked by zerokun4 1

The diagonals of a square each measure 7 feet. Find the area of the square.

2007-07-30 02:54:28 · 6 answers · asked by zerokun4 1

C = (5/9)(F - 32) C is expressed in terms of F..

5/9)(F - 32) = C
F - 32 = (9/5)C How did 9/5 exist???
F = (9/5)C + 32

Pls explain this step by step........

2007-07-30 02:53:04 · 6 answers · asked by Anonymous