Mathematics (Science & Mathematics) - 21 June 2007

4 ⤊

Select an equation below for the tangent line to the ellipse 4x^2 + 3y^2 =7 at the point -1,-1 on the ellipse?

equations

a. 3x + 4y - 7 = 0

b. 3x - 4y - 7 = 0

c. 3x + 4y + 7 = 0

d. 3x - 4y + 7 = 0

e. 4x + 3y - 7 = 0

f. 4x - 3y - 7 = 0

g. 4x + 3y + 7 = 0

h. 4x - 3y + 7 = 0

or is it none of these?

2007-06-21 06:47:32 · 6 answers · asked by chris 2

0 ⤊

How do I solve...?

logbase3(x) = logbase3(x + 2) = logbase3(2) + logbase3(12)
I've tried solving this several ways, but I can't make this work!!! How is log base3(x) equal to logbase3(x+2)? I am so confused by this.

2007-06-21 06:30:58 · 1 answers · asked by Anonymous

6 ⤊

list all the possible rational roots of 2x^3+17x^2+23x-42=0???

A. ±1,±2,±3,±6,±7,±14,±21,±42,±1/2,±3/2,±7/2,±21/2
B. ±1,±2,±6,±7,±21,±42,±1/2,±7/2,±21/2
C. ±1,±2,±3,±6,±7,±14,±21,±42,±2/3,±7/2,±21/2
D. ±1,±2,±3,±6,±7,±14,±21,±42,±1/2,±2/7,±21/2

2007-06-21 06:08:13 · 5 answers · asked by Irina L 1

3 ⤊

For what minimal cost can 8 workers be instructed to operate machines?

There are 5 different machines in the workshop. It costs 1000 euros to teach a worker to operate any one of the machines. For what minimal cost can 8 workers be instructed to operate machines so that all the machines can operate simultaneously even if any 3 of the workers are absent? Each worker can operate only one machine at a time.

2007-06-21 06:06:58 · 3 answers · asked by oregfiu 7

0 ⤊

Hi - Can someone please help me with below statisic question.?

The random variable x takes on the values 1, 2, or 3 with probabilities (1 + 3k)/3, (1 + 2k)/3, and (0.5 + 5k)/3, respectively.
i. Find the appropriate value of k.
ii. Find the mean.
iii. Find the cumulative distribution function.

2007-06-21 05:35:33 · 3 answers · asked by Anonymous

0 ⤊

I will not be asking a question I will be giving you a problem.?

If you get the correct answer right you will be chosen as the best answer ever!!!!(just from me)

The problem is: <45>-12222/0987.90=

2007-06-21 05:27:06 · 5 answers · asked by Mrs. Edward Cullen 1

8 ⤊

solve 3t^2-24t= -30 by completing the square?

A. 4+/- sqrt 6
B. 10, -2
C. 10, 22
D. 4 +/- sqrt 14

2007-06-21 05:26:25 · 6 answers · asked by irchik_06 1

8 ⤊

which is true for the graph of y=(x^2-4)/(x^2+9)?

A. vertical assymptotes at x= +/-3
B. horizontal assymptotes at y= +/-2
C. vertical assymptotes at x= +/-2
D. horizontal assymptotes at y=1

2007-06-21 05:15:04 · 5 answers · asked by HOPING 1

12 ⤊

how many centimeters is 5 feet 6 inches?

2007-06-21 05:06:48 · 17 answers · asked by darth_vader_6311 2

0 ⤊

"Foot/Feet" Unit trick to imagine? please?

please can u tell me an easy trick to figure the Foot Unit out?
vertically?
thanks so that i can imagine how tall is X Foot?
:) !

2007-06-21 04:55:00 · 2 answers · asked by Anonymous

0 ⤊

please, help me with this math problem! it's about functions?

what is the period of this funtion?

y=2sin2x+tgx

2007-06-21 04:40:53 · 2 answers · asked by murzilka 1

1 ⤊

RE-arrange the formula to make G the new subject...?

B = t²- g ∕ t + g

Rearrange the formula to make 'g' the new subject

2007-06-21 04:30:23 · 6 answers · asked by charlie c 2

0 ⤊

2^x = 4^5/2?

Please help me.

Answer choices,

2

5

5/2

4

2007-06-21 04:26:33 · 4 answers · asked by paw_nikki_mixmutt 1

0 ⤊

what is something infinitly large value but not infinite multiplied by infinitly small value but not zero?

when i ask my teachers what is infinity multiplied by 0 they say its indeterminant
then what would be the answer for above question

2007-06-21 04:14:31 · 3 answers · asked by god's pattern 1

0 ⤊

how do you answer the problem?

how do you evaluate 3^-4 / 4^-3

2007-06-21 04:13:41 · 9 answers · asked by What's up people!! 1

0 ⤊

How do you work this out?

how do you evaluate: 3+5(9-6)^2 /3-2

2007-06-21 03:53:37 · 5 answers · asked by What's up people!! 1

1 ⤊

am i correct in assuming the following?

when typing is x^2 equal to x squared?
also is * equal to multiply?

2007-06-21 03:14:47 · 8 answers · asked by Anonymous

2 ⤊

which is the largest prime number?

2007-06-21 02:50:46 · 8 answers · asked by mmb 1

0 ⤊

for x and y intercept 6x-y=9?

for math

2007-06-21 02:44:02 · 4 answers · asked by Anonymous

0 ⤊

Can someone help me with these trig problems.?

I have 3 left and I can not get them.

(1-cosx)/(1+cos x)= (cot x - csc x)^2

((1)/(tan a - sec a))+((1)/(tan a + sec a))= -2 tan a

(csc x +cot x)/(tan x +sin x) = (cot x*csc x)

Thank you in advance for your help.

2007-06-21 02:40:49 · 1 answers · asked by hotrodv82000 1

2 ⤊

which would be greater a^b or b^a , given b > a?

2007-06-21 02:13:34 · 15 answers · asked by jitu 1

0 ⤊

Suppose you deposit $20,000 for 3 years at a rate of 8%.?

Calculate the return (A) if the bank compounds annually (n = 1). Use ^ to indicate the power.

Calculate the return (A) if the bank compounds quarterly (n = 4). Round your answer to the hundredth's place.

Calculate the return (A) if the bank compounds monthly (n = 12). Round your answer to the hundredth's place.

Calculate the return (A) if the bank compounds daily (n = 365). Round your answer to the hundredth's place.

What observation can you make about the size of increase in your return as your compounding increases more frequently?

2007-06-21 01:57:05 · 5 answers · asked by alesia h 1

7 ⤊