Mathematics - 10 December 2007

2007-12-10 14:16:21 · 8 answers · asked by Rosanna G 1

I can't solve these for the life of me - whoever does correctly will get best answer!! Pleaase help - I want to understand:)

Solve 9^(2x^2 - 2x) = 27

Solve 8(3^x - 6) = 876

2007-12-10 14:14:04 · 4 answers · asked by Jaz 'ma' Taz 2

suppose n is a prime number (not equal to 2 or 5). suppose X is a random number. n divides X^2 - 5. prove that n has to be ≡ to 1 mod 5 or 4 mod 5.

2007-12-10 14:06:47 · 2 answers · asked by 3545 2

√-25 + √-16 = ?

the square root of -25 plus the square root of -16

2007-12-10 14:04:20 · 10 answers · asked by Anonymous

Natasha rides her bike (at a constant speed) for 3 hours, helped by a wind of 3 miles per hour. Pedaling at the same rate, the trip back against the wind takes 9 hours. Find find the total round trip distance she traveled.

a. 12 miles
b. 27 miles
c. 27 / 2 miles
d. 54 miles

2007-12-10 14:04:19 · 3 answers · asked by . 1

This is business calculus.

2007-12-10 13:58:50 · 2 answers · asked by ysmah29 1

I know tan = y/x and cot = x/y. But I have some trouble on figuring whether x or y is negative when the number in the parentheses is negative. For example, take: tan -(5/4) or cot -(3/7) . How can i figure out whether x or y is negative?

2007-12-10 13:53:26 · 3 answers · asked by Just Me 2

Here the question that I'm struggling with but I'm having trouble with problem C.

One employee of a furniture store is paid a base salary of $ 4000 a month plus an 6 % commision on all sales over $ 8000 during the month.

(A) How much must the employee sell in one month to earn a total of $ 9000 for the month?
$ 91333.33

A second employee of the furniture store is paid a base salary of $ 5000 a month plus 3 % commission on all sales during the month.

(B) How much must the employee sell in one month to earn a total of $ 9000 for the month?
$ 133333

(C) Determine the sales level at which both employees receive the same monthly income.
$ ???

2007-12-10 13:18:10 · 2 answers · asked by MUSICQUEEN88 1

a)6,0 b)4,-2 c)-8,6 D)0,6

2007-12-10 13:14:49 · 2 answers · asked by Anonymous

Hexodecimal is base 16.

2007-12-10 13:14:16 · 5 answers · asked by Akito L 1

problem is

3(y-7) to power of 2 = -12

2007-12-10 13:08:20 · 8 answers · asked by jin l 2

2007-12-10 13:05:37 · 3 answers · asked by Anonymous

A)dilation B)R(0,90)degrees c)ry=x D)T(3,6)

2007-12-10 13:04:32 · 1 answers · asked by Anonymous

My daughter wants to know the answer for homework and I have no idea because I never learned it!

2007-12-10 13:01:00 · 13 answers · asked by iluvmyhorsemorethenanything1204 1

The atmospheric pressure p on a balloon or an aircraft decreases with increasing height. This pressure, measured in millimeters of mercury, is related to the height h (in kilometers) above the sea level by the formula... p=760e^(-.145h)


Question. Find the height of a mountain if the atmospheric pressure is 664 millimeters of mercury.

2007-12-10 12:57:51 · 4 answers · asked by Dave & Sunny 2

I don't get it.

2007-12-10 12:57:22 · 4 answers · asked by hohum 1

2007-12-10 12:46:36 · 1 answers · asked by Luke M. 2

when it says solve
like 4^x+1=8^2x+3


4 and 8 are not the same so does that mean i have to multiplay by two in order to get 8. so that means i have to multiply the exponet by 2 too. right?

2007-12-10 12:45:28 · 1 answers · asked by Ballerina 5

The atmospheric pressure p on a balloon or an aircraft decreases with increasing height. This pressure, measured in millimeters of mercury, is related to the height h (in kilometers) above the sea level by the formula... p=760e^(-.145h)

Question 1. Find the height of an aircraft if the atmospheric pressure is 247 millimeters of mercury.

Question 2....

2007-12-10 12:40:48 · 2 answers · asked by Dave & Sunny 2

im in algebra 2 honors and i am studying cirles on the graph.

how does the equation x(squared)+y(squared)=1 make a cirlce??? kinda confusing... because when i put it in my calculator and hit graph nothing happened.

2007-12-10 12:38:11 · 6 answers · asked by Kris2007 2

2007-12-10 12:36:45 · 6 answers · asked by Anonymous

Explain why a frame that normally is rectangular will, when it sags, keep the shape of a parallelogram.

2007-12-10 12:35:58 · 5 answers · asked by Sally S 1

2007-12-10 12:35:48 · 3 answers · asked by cody s 1

2007-12-10 12:34:43 · 14 answers · asked by Anonymous

2007-12-10 12:34:10 · 9 answers · asked by Artisic 1

I'm told to solve this equation 9x-4= -9x^2

I'm not too sure how to do it, I tried changing it to standard form but I was lost there since there is no common factor.
If anyone could do the steps for it, I'd appreciate it!

2007-12-10 12:33:35 · 5 answers · asked by Nick B 2

2007-12-10 12:31:54 · 16 answers · asked by Anonymous

-1
15
56
1
which one is it??

2007-12-10 12:27:14 · 3 answers · asked by Anonymous

whats x

2007-12-10 12:22:07 · 9 answers · asked by dedrick h 1

A rectangle is to be inscribed in a semicircle of radius 8, with one side lying on the diameter of the circle. What is the maximum possible area of the rectangle? will you please explain how to do this??

2007-12-10 12:08:42 · 4 answers · asked by hannah 1