Mathematics - 19 November 2007

Find the dimensions of a rectangle whose perimeter is 46 cm and whose area is 120 cm square.

2007-11-19 16:55:40 · 10 answers · asked by Cesar F 1

Hi i need help with these simple algebra questions , these are the only ones i am stuck on. It is for Algebra II. We are currently on the topic of simplifying radical expressions.


1. sqrt(40 a^3 b^4)

2. 2 * sqrt (24m^4n^5)^ (1/3)
( which reads as 2 multipled by the third root of 24m^4n^5)

3. sqrt( (1/32)w^6 z^7) ^ (1/5)
( which reads as the fifth root of 1/32 w^6z^7

2007-11-19 16:50:12 · 2 answers · asked by ique4life 1

...Please

2007-11-19 16:45:58 · 5 answers · asked by Duchess 2

find the area under the standerd normal curve between z=0.53 and z=1.24

2007-11-19 16:43:09 · 4 answers · asked by jim k 1

I've altered the equation of an ellipse to make it easier to differentiate: (b^2)(x^2) + (a^2)(y^2) = (a^2)(b^2)

From here, I must use implicit differentiation so that I can find the slope of the tangent line on the ellipse. I need to see it step by step so that I can learn how to do this correctly. Thanks.

2007-11-19 16:32:35 · 1 answers · asked by dark aura 2

A party store ordered 50 cases of balloons. The number of cases in stock t months after the order arrives is given by the equation
n(t)= 50e^-0.3t

How many cases are in stock when the order arrives?
How many cases are in stock 6 months after the order arrives?

2007-11-19 16:29:03 · 2 answers · asked by Nidhi M 1

2007-11-19 16:21:53 · 10 answers · asked by Floyd O 1

6x+4y=14
2x+8y=21

2007-11-19 16:20:43 · 3 answers · asked by ninnis 1

The weight (w) of an object in pounds is related to its distance (d) from the center of the earth by the equation: w= 320 over (d)cubed or 320
D2 Where (d) is in thousands of miles. How much does the object weigh at sea level which is about 4,000 miles form the center of the earth?

2007-11-19 16:19:11 · 3 answers · asked by sistermoon 4

I have this equation here and i am completely stuck. Any tip on soliving this problem?

1+(1/2).... 1+(3/4) 1+ (7/8) 1+ (15/16)

2007-11-19 16:14:29 · 3 answers · asked by linh 1

Could you show me the steps? I really don't understand how to do it.

And I don't think there's supposed to be a set answer like 5 or 3.6533 I think it's going to be something in terms of tan or cos or something... and something I forgot to mention is that x was a substitute for theta

2007-11-19 16:12:32 · 1 answers · asked by annette 3

1. p% of $q=
A)$pq
B)$ ( p+q/100)
C)$100pq
D)$ pq/100

2.A pen is bought for $69.50 and sold for $89.50. What is the gain per
cent?

3.The price of a television set is reduced by 18% to $1722. What was the original price?

2007-11-19 16:08:01 · 3 answers · asked by Anonymous

here is the grid
1 _ 2
5 4 _
_ 7 3

you're supposed to fill in the numbers 6, 8, 9

2007-11-19 16:01:17 · 1 answers · asked by Anonymous

2007-11-19 16:01:07 · 4 answers · asked by puentesguitar 1

2007-11-19 15:56:08 · 11 answers · asked by Spade 2

1) find 2 points that has a distance of 5 and a slope of 3/4 to the point (2,3)

2) find the interior angles and area of the triangle with points (4,2), (0,1), and (6,-1)

I already tried to answer this problem but my angles has negative, so it wont be equal to 180 degrees

2007-11-19 15:36:12 · 2 answers · asked by Patricia 2

Ok

y=a^x

F(8)=a^-3

Solve for a, I'm probably not seeing it but if someone can help me i'd appreciate it

2007-11-19 15:30:14 · 3 answers · asked by pyerzuka 3

Answer: All children will be potiential child molesters and weapons of mass destruction. They will all be great singers though as they will be able to sing "Jailhouse Rock"and " Beat It" very well.

2007-11-19 15:23:30 · 4 answers · asked by Eric W 1

i was thinking how strange the number zero is! if you multiply something by it, you get zero. but why can not you divide any thing by zero? why?

2007-11-19 15:15:54 · 18 answers · asked by Anonymous

These are the problems i need help with:
Write a equilvalent fraaction to each decimal.
1. 0.08 2. 0.04 3. 0.84

2007-11-19 15:12:08 · 4 answers · asked by Dumb Giirl 1

i have one... to use the formula:

cos(theta)=a.b/|a| |b|


whats the other way?

2007-11-19 15:08:51 · 2 answers · asked by mystery_girl07 2

Y=-2(3^[6-x])+16 whats the domain?
and range and what is the answer for the x int in a decimal

2007-11-19 15:04:47 · 1 answers · asked by Anonymous

A rectangular fish pond is 7ft longer than it is wide. A wooden walk is 1ft wide and is placed around the pond. The area covered by the pond and the walk is 58ft (squared) greater than the area covered by the pond alone. What are the dimensions of the pond?

2007-11-19 14:57:59 · 2 answers · asked by daniella26 2

Please explain the formulas so I will be able to understand.

4) Ann Tick runs up the "down" escalator in 12 seconds and back down again in 8 seconds. The escalator is 48 feet long. How fast does Ann run? How fast does the escalator move?

6) Deep Though Granola is 25% nuts and dried fruit. Oat Dream Granola is 10% nuts and dried fruit. How much of Deep Though ands how much of Oat Dream should be mixed to form a 20 LB batch of franola that is 19% nuts and dried fruit?

7)Etch Clean Graphics uses one cleanser that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get a 10L of solution that is 40% acid?

8) Lomasi's two student loans totaled $12,000. One of her loans was at 6% simple interest and the other at 9%. After one year, Lomasi owed $855 in interest. What was the amount of each loan?

9) The rectanglular ground floor of the John hancock building has a perimiter of 860 ft. The length is 100 ft more than the width. Find the length and w

2007-11-19 14:56:51 · 2 answers · asked by iMarty 4

Could you please explain how to do this problem?

Find the tangent to the curve y=4+cotx-2cscx
at the point (pi/2,2)
thankyou

2007-11-19 14:52:37 · 2 answers · asked by jkl;;khg 3

I got 2, but the book says 0. Can anyone help?

2007-11-19 14:31:30 · 6 answers · asked by Anonymous

and range and what is the answer for the x int in a decimal

2007-11-19 14:28:37 · 2 answers · asked by Anonymous

my assignment is to make different equations and plot them so that they form some sort of picture using different functions such as absolute value function, peicewise function... please help i have no idea what i am doing!!

2007-11-19 14:25:15 · 2 answers · asked by help91 1

2007-11-19 14:22:06 · 2 answers · asked by jweezy 2

I am looking for someone who can help me figure out the steps to this problem

One number is 5 times another. If the sum of their reciprocals is 1/5 find the two numbers. Define the variables you use, and remember to check your solutions.

2007-11-19 14:20:37 · 5 answers · asked by meme 1