Mathematics - 11 November 2007

2007-11-11 12:17:09 · 4 answers · asked by Anonymous

Could someone help me solve this problem. I'm having trouble with it.

Solve for all real values of x.

2 sinx + cscx = 3

Thanks. Solve in steps please

2007-11-11 12:16:03 · 5 answers · asked by cgarletts 1

Part A: Consider the function f(x)= 8sqrt[x] +4 on the interval. [1,7] Find the average slope of the function on this interval.

Part B: By the Mean Value Theorem, we know there exists a in the open interval (1,7) such that f'(c) is equal to this average slope. For this problem, there is only one that works. Find it.

2007-11-11 12:11:09 · 2 answers · asked by Anonymous

2007-11-11 12:05:31 · 2 answers · asked by Jenny D 1

Well done if you get this one it's hard
I think you have to start by 'pretending' that sin^4x + cos^4x is sin^2x + cos^2x and use sin^2x + cos^2x = 1
Then you have to do something with double angle formulae maybe... I don't know!!!

2007-11-11 12:05:09 · 2 answers · asked by Me 1

Can you help me with simplifying these radical expressions? Thank you.

1. 5√24 * 3√10

2. √192

3. √150

Have a great day! =)

2007-11-11 11:57:01 · 3 answers · asked by Anonymous

if some explanation could be given, that would be great. Text just throws these terms out there while dealing with trig functions, but doesn't explain what or how to locate them.

State the period and amplitude for the following equations:
y = 4sin(2x)
y = 3cosx
y=cos(2x)

2007-11-11 11:54:24 · 2 answers · asked by dustin_r_85 1

22 + 5(6v - 1) = -63

2007-11-11 11:49:06 · 12 answers · asked by Anonymous

A positive interger is one more than twice another. Their product is 78. Find the two integers. can you help me to solve this problem and explain how you did it. Thank you i need to understand how to do this word problems please give a hint of how can i solve them

2007-11-11 11:40:43 · 5 answers · asked by Silvia S 1

5 ln|y| = 0.5t - cos(t) + 1
I need to solve for t. I'm not sure how. I know that you can't factor out a t, so what do you do? Show every little step please!!!!

2007-11-11 11:11:20 · 2 answers · asked by aba 2

how long will it take for an investment to double in value if it earns 7.75% compounded continuously?

that means r=.07
you use some form of the equation
A=Pe^rt i think

2007-11-11 11:02:15 · 4 answers · asked by Katie E 2

7r-5s=1
5r+7s=43

2007-11-11 10:53:11 · 6 answers · asked by Anonymous

x-y=-11
5x-2y=-43

2007-11-11 10:41:53 · 8 answers · asked by Anonymous

The path of a rocket fired during a fireworks display is given by the equation s(t) = 64t^2− 16t, where t is the time, in seconds, and s is the height, in feet.

What is the maximum height, in feet, the rocket will reach?

In how many seconds will the rocket hit the ground?

2007-11-11 10:36:19 · 2 answers · asked by Anonymous

Okay can someone explain to me what I have to do here. You don't need to give me the answer,but just help me get started so I can finish it.

Write a 2 column proof or paragraph proof.

Given: angle TQS is congruent to angle RSQ
angle R is congruent to angle T

Prove: Triangle TQS is congruent to trinagle RSQ

Now I realize this could be hard because I can't put the picture of the triangle,but just try your best.

THank you for your time. It is greatly appreciated!

2007-11-11 10:26:25 · 8 answers · asked by donutss 1

A rancher wants to fence in an area of 580 square feet in a rectangular field using fencing material costing 1.4 dollars per foot, and then divide it in half down the middle with a partition, parallel to one side, constructed from material costing 0.6 dollars per foot.
Assuming that the partition is parallel to the side which gives the width of the field, find the dimensions of the field of the cheapest design.

2007-11-11 10:24:45 · 2 answers · asked by samantha 5

Write this expression as a single logarithm.
log(x2 + 8x + 12) - 2 log(x + 6)
Give your answer using the form logA(B).

2007-11-11 10:13:11 · 4 answers · asked by Anonymous

solve each equation using the algebraic method that seems convenient
3a - b =13
2a + 3b = 16

i asked a question similar to this but i still dont really get it

2007-11-11 10:12:39 · 4 answers · asked by blahhhhhh 2

Can someone help solve this trig equation?

10sin^2x - 7sinx - 6 = 0

2007-11-11 10:08:36 · 2 answers · asked by Anonymous

Find values of a and b such that
(2+√3)(4-√3)=a+b√3

2007-11-11 10:07:09 · 3 answers · asked by dominion_vortar 2

2007-11-11 10:04:32 · 2 answers · asked by miyshoe 4

solve the equation:

3 cosec x + 8 cos x = 0

for x the interval is 0< x < 180

please could you briefly tell wats goin on each step..thnxs!

2007-11-11 10:03:06 · 1 answers · asked by clueless 1

ok, it's been so long that i've done these. solve(in steps), without converting the mixed number into an improper fraction. thanks.

1) 2 - 5 2/3=?
2) 3 - 4 4/6=?

2007-11-11 10:00:36 · 3 answers · asked by Papi Tony 3

2007-11-11 09:42:22 · 13 answers · asked by Angel 1

this is polya's problem and i have to do it for geometry and it is the freakin hardest thing ever! someone please help me!

2007-11-11 09:25:45 · 5 answers · asked by k8tqwen 1

Find the solution of the following initial-value problem

2007-11-11 09:25:38 · 3 answers · asked by dimachevelle 2

2007-11-11 09:25:31 · 3 answers · asked by Sarah <3 1

If the population of Mesa, AZ increased from 152,404 to 288,091 over ten years, by what percent did the population increase in the decade?

And also what was the growth rate for the decade?

2007-11-11 09:21:16 · 4 answers · asked by rst41 2

When current "i" flows through a given electrical circuit, the power "w" of the circuit can be determined by the formula W=120i - 12i^2. What amount of current "i" supplies the maximun power for "W"?

thanks for helping out :)

2007-11-11 09:17:34 · 6 answers · asked by Anonymous

I have these three problems and I have to graph each side of each problem to see where they overlap each other. Could someone tell me what the amp, and period is for each one, and if there is any VS, HS or anything else.

1.) sin 2x = -sinx

2.) sinx = cos2x -1

3.) sinx = -cosx

Remember, you have to do it for each side(left and right hand side) of each problem.

2007-11-11 09:12:33 · 1 answers · asked by deb3267 1