# Posts by Cody

Total # Posts: 464

**Physics**

One end of a cord is fixed and a small 0.470-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m as shown in the figure below. When θ = 21.0°, the speed of the object is 4.70 m/s. At this instant, find each of the...

*September 22, 2011*

**math (radicals)**

the answer to this expression is -9-4√5 the expression is (2+√5)/(2-√5) i cant figure out how it got there

*September 22, 2011*

**Physics**

yeah

*September 22, 2011*

**math**

first off, that is one creeeeepy topic to study. mean is all the numbers added together and then divided by the number of elements, so in the case of 5,2,3,1,8, i add like 5+2+3+1+8 and divide this number (19) by 5, the number of elements used, and the mean is 3.8. how your ...

*September 21, 2011*

**3rd grade**

-_- fail. i just failed a 3rd grade math problem and i live at the illinois math and science academy. that is just sad

*September 21, 2011*

**3rd grade**

if the one is 5 and the hundreds is 8, then it is 5._8, and 5 + 8 + _ = 16, so you subtract 5+8 from 16 and get 3, so the number is 5.38

*September 21, 2011*

**algebra**

wow that looks so much more complicated than it is. the square root of 5 over the square root of 15, if the parentheses and crap above was confusing

*September 21, 2011*

**algebra**

rationalize denominator and simplify: v/...| is square root (v/5))/(v/15)) please help

*September 21, 2011*

**math**

the -30 -30 was subtract 30 from both sides. it lined up in the box but not when posted -_-

*September 21, 2011*

**math**

let the distance from c --> d be x if b --> c is ten miles farther than x, then let that distance be x+10 same for a --> b. it is 10 further than b --> c (x+10), so it would be x+10+10, or x+20 so look at it like so: a --x+20->b--x+10->c--x->d the total ...

*September 21, 2011*

**MATH PLZ HELP**

well i'm stumped. i can't figure out how to solve this. solve for (x,y): 3/x + 2/y = 0 5/x - 1/y = 13 i can't graph it, and i can't use a calculator. i keep getting stuck on the second equation b/c i get 5y -13xy -x=0 and since 13 is a prime number i cant ...

*September 21, 2011*

**physics**

160-115 = distance from position to town, and as for his current position is this the whole question because i cant tell the position from where exactly

*September 21, 2011*

**algebra**

0.75 x 620

*September 21, 2011*

**experiment**

it turns green, and its called a patina. the statue of liberty is copper and the green is from the patina coating it

*September 21, 2011*

**algebra**

well i'm stumped. i can't figure out how to solve this. solve for (x,y): 3/x + 2/y = 0 5/x - 1/y = 13 i can't graph it, and i can't use a calculator. i keep getting stuck on the second equation b/c i get 5y -13xy -x=0 and since 13 is a prime number i cant ...

*September 21, 2011*

**7th lang arts**

yeah, duration

*September 21, 2011*

**7th lang arts**

if the context is a measurement, then duration would be it because duration is a measurement of time

*September 21, 2011*

**social studies**

The Constitution of the United States is the supreme law of the United States of America. It is the framework for the organization of the United States government and for the relationship of the federal government with the states, citizens, and all people within the United ...

*September 16, 2011*

**physics**

i hate to tell you this, but you were wrong. the putty was better because it was one pin, and when looked at in terms of momentum, the rubber ball retains much of its momentum, just negative. the putty retans no momentum, transferring it all to the pin.

*September 16, 2011*

**physics**

to knock them over. its dealing with elastic/inelastic/totally inelastic collisions

*September 16, 2011*

**physics**

you throw 2 balls at a bunch of pins. is it better to throw a putty or rubber ball?

*September 16, 2011*

**science**

3 scientistperform the same experiment. 2 of them got the same answers, 1 of them got something completely different. what should these 3 peple do before trusting their answers and sharing their results with others?

*September 1, 2011*

**precalculus**

the variable j varies jointly as the square of h and as the cube root of a, and it varies inversely as s. What happens to j when h is doubled, a is multiplied by 8, and s is multiplied by 4?

*August 31, 2011*

**pre-algebra**

Thank you, 450-366=84

*June 24, 2011*

**pre-algebra**

Ms. Sue, wher did you come up with 500*0.9?

*June 24, 2011*

**pre-algebra**

Solve, show the algebraic you use. Tammy has the following scores on her business law tests 92, 99, 84, 91. What score must she earn on her fifth test in order to have an A average? An A for her university starts at 90.

*June 24, 2011*

**pre-algebra**

You are traveling to your mother's house that is 234 miles away. If you are currently twice as far from your home as you are from your mother's house, how far have you traveled?

*June 24, 2011*

**pre-algebra**

x=24056.6

*June 24, 2011*

**pre-algebra**

If Denise received a 6% raise and is now making $25,550 per year, what was her salary before the raise?

*June 24, 2011*

**pre-algebra**

Write the equation for the given graph. 8,8,-8

*June 20, 2011*

**pre-algebra**

10.18

*June 20, 2011*

**pre-algebra**

Solve the problem. Please show all of your work. A driveway rises 11 feet over a horizontal distance of 112 feet. Find the slope of the driveway. Round your answer to two decimal places.

*June 20, 2011*

**pre-algebra**

(x1,y1)(x2,y2) -2-(-2)/-7-(-5) = 0/-2

*June 20, 2011*

**pre-algebra**

Find the slope of the line containing the given pairs of points. If the line is undefined, state so. Please show all of your work. (-5, -2) and (-7, -2)

*June 20, 2011*

**pre-algebra**

Find the x- and y- intercepts for the equation. -x+2y=4 Please show all of your work.

*June 20, 2011*

**pre-algebra**

Find the y- intercept for x+y=5.

*June 20, 2011*

**pre-algebra**

Write the equation of this situation: the value,v, in hundreds of dollars of Debbie's coin collection is 10 dollars more than 1/2 of the age, t (in years). Then determine the value of Debbie's coin collection of it is 8 years old. Please show all of your work.

*June 20, 2011*

**pre-algebra**

Given the linear equation y=-5x-2. Find the y-coordinates of the points (-1), (-2), and (1). Please show all of your work.

*June 20, 2011*

**pre-algebra**

The salaries ( in thousnds of dollars) of the managers of five local hardware stores are 50, 70, 60, 80, and 90. What is the difference between the highest paid and lowest paid managers?

*June 20, 2011*

**pre-algebra**

You divide, 72.9/125=0.5832

*June 16, 2011*

**pre-algebra**

What percent of 125 is 72.9%?

*June 16, 2011*

**pre-algebra**

41.772/.59=70.8

*June 16, 2011*

**pre-algebra**

41.772 is 70.8% of what number?

*June 16, 2011*

**pre-algebra**

4756.32

*June 16, 2011*

**pre-algebra**

What is 648% of 734?

*June 16, 2011*

**pre-algebra**

21/40*100=52.5%

*June 16, 2011*

**pre-algebra**

Convert 21/40 to a percent.

*June 16, 2011*

**pre-algebra**

Convert 0.75% to a decimal

*June 16, 2011*

**pre-algebra**

Linda would like to hire a clown to perform at her son's birthday party. Clown city charges $100 for incidentals plus $30 per hour for hiring a clown to perform. Party performers charges $120 for incidentals plus $25 per hour. How many hours would Linda need to plan on so...

*June 14, 2011*

**pre-algebra**

Sam has no more than $250 to spend on ceramic tile for his foyer. The rectangular floor in his foyer is 5ft. by 8ft. What can he spend per square foot on ceramic?

*June 14, 2011*

**pre-algebra**

Translate the following into an inequality. Do not solve. Profits in the second quarter for a local retailer were all 112% of that in the first quarter. Profits in the third quarter were 87% of that in the first quarter. The profits for the three quarterscombined exceeded $...

*June 14, 2011*

**pre-algebra**

Translate the following situation into an equation. Do not solve. There are seven less than twice the marbles in Tim's box as there are in Amelia's box. Chris has six more marbles than Amelia. How many marbles does Amelia have if together the three of them have 95 ...

*June 14, 2011*

**pre-algebra**

Angel M and Angel N are supplementary angles. If Angel M is nine more than one half Angel N, what are the measures of the angels?

*June 14, 2011*

**pre-algebra**

Use an inequality to solve the problem. The equation y=0.04x-0.40 can be used to determine the approximate profit,y, in dollars, of producing x items. How many items must be produced so the profit will be at least $1402?

*June 14, 2011*

**pre-algebra**

1/2*20<20 10x<20 x-2 The sign can be no more than 2 ft. high.

*June 14, 2011*

**pre-algebra**

Use an inequality to solve the problem. A shopkeeper is making a triangular sign for his store front, but he must keep the sign under 20 square feet to adhere to the zoning laws. If the base of the sign is 20 feet, what is the maximum height of the triangular sign?

*June 14, 2011*

**Geometry**

A cylinder has a height of 16 cm and a radius of 5 cm. A cone has a height of 12 cm and a radius of 4 cm. If the cone is placed inside the cylinder as shown, what is the volume of the air space surrounding the cone inside the cylinder? (Use 3.14 as an approximation of .)

*May 25, 2011*

**spelling**

boss'

*May 8, 2011*

**science**

two ways gravity can effect the movement of a wheel and axel in a bicycle

*April 17, 2011*

**government**

__________ is the term given to the activities of interest groups that seek to influence the making and implementation of public policy and to persuade government officials to support a group's position.

*April 4, 2011*

**algebra**

Rachael bought 12 pencils and 7 markers for $5.36, and later bought 8 pencils and 5 markers for $3.68. Find the cost of each pencil and marker.

*March 16, 2011*

**math**

In a pair of similar rectangles, the ratio of the widths Is 3:4. What is the ratio of the lengths?

*March 7, 2011*

**math**

parallel to y 2x+2 and passes through the point (2),(3)

*February 22, 2011*

**english**

in the story "snow" through the story's first-person narration, the reader comes to understand

*February 22, 2011*

**trig**

How do I find the exact value of sin2x when secx is equal to the negative square root of three

*February 18, 2011*

**Math**

Edit: (1/c+2) + (1/0.30c+0.60) = ?? How do i find a common denominator for this? thank you.

*February 8, 2011*

**Math**

1/c+2 + 1/0.30+0.60 = ?? How do i find a common denominator for this?

*February 8, 2011*

**Math**

1/7 + 1/-7 = How do i solve?

*February 7, 2011*

**math**

2/5

*January 25, 2011*

**math**

The perimeter of a rectagle is 50 centimeters. The length of the rectangle is one more than 3 times the width of the rectangle. What are the demensions of the rectangle?

*January 2, 2011*

**Math**

factor out 16x^2-80+100

*December 12, 2010*

**English**

Do you understand the ideals and values

*December 9, 2010*

**Ap Euro History**

What is the Relative Success in Achieving Catholic/Protestant Aims when the catholics posted the 95 theses?

*December 2, 2010*

**Chemistry**

Thanks much! I kept getting 0.4M, but realized that I was multiplying 1M * 10 mL instead of 0.1M.

*November 22, 2010*

**Chemistry**

Also, I was looking for the concentration of HCl, not the volume. The equation is: HCl (aq) + NH4OH (aq) ---> NH4Cl (aq) + H2O (l).

*November 22, 2010*

**Chemistry**

What is the concentration of HCl when 25.0 mL of HCl completely reacts with 10.0 mL of 0.1M solution of NH4OH (subscript 4)? Solution steps would be helpful so I can solve other similar problems.

*November 22, 2010*

**Chemistry**

convert @5g of NaCl into moles

*November 18, 2010*

**chemistry**

If I make an ice pack with 750mL of water, what mass of ammonium chloride must I include to get the temperature to drop from room temperature (20 degrees C) to 5 degrees C?

*November 17, 2010*

**Calculus**

______ /_____/| $5 bottom || || $1 Top || || H $3 Side ||____|| |/____|/S S A = S^2 * H Cost will be related 4 = S^2 * H with Surface Area H = 4 / S^2 So our equation is... SA = 2S^2 + 4SH Cost = 5S^2 + S^2 + 4*3*S(4/S^2) Cost = 6S^2 + 48/S Now we differentiate Cost Cost'...

*November 15, 2010*

**math**

Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80

*November 15, 2010*

**math**

Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80

*November 15, 2010*

**physics**

Two particles of mass m1 = 1.0 kg and m2 = 2.6 kg are traveling with velocities v1 = 4.9, and v2 = 2.5 as shown in the figure below. What is the total momentum of this system? Be sure to give the magnitude and direction of the momentum. magnitude 1 kg · m/s direction 2...

*November 10, 2010*

**physics**

Two particles of mass m1 = 1.0 kg and m2 = 2.6 kg are traveling with velocities v1 = 4.9, and v2 = 2.5 as shown in the figure below. What is the total momentum of this system? Be sure to give the magnitude and direction of the momentum. magnitude 1 kg · m/s direction 2&...

*November 9, 2010*

**8th grade**

I need a topic for a non fiction paper

*October 31, 2010*

**science**

what is the meaning of lysosmes. How is it used in a cell.

*October 24, 2010*

**Math**

56/9,644,600

*October 4, 2010*

**math**

looking for any mathematical characteristic of the number 13 for a math project

*October 3, 2010*

**math**

Show how commutative property of addition works using the numbers 2, 3, & 5

*September 15, 2010*

**math**

opps sorry 7+(3+5)=(7+3)+5

*September 15, 2010*

**math**

What property of addition is shown in the following number sentence? why?

*September 15, 2010*

**math**

What property of addition is shown by 5+2=2+5 Associative Distributive commutative or Identity

*September 15, 2010*

**math**

why is 23 deficient?

*September 14, 2010*

**MATH**

1273 256 1529 20 500 no

*September 13, 2010*

**please check**

1) exploit 2) obsolete 3)elicited 4) acclaim 5) escalated 6)engrossed 7)adjacent 8)terminate 9)methodical 10)tangible

*August 30, 2010*

**Algebra**

25b^3+5b^2+34b+29 go to webmathcom, click algebra and under simplifying expressions click anything else and enter your promblem and hit try to simplify it and it will explain everything

*August 27, 2010*

**geometry 11th grade**

suppose the coordinate of 9 is 2, pq=8 and pr=12. what are the possible coordinates of the midpoint of the given segment qr

*August 26, 2010*

**10th grade**

I have to write an insightful handwritten reflective response via essay about a passage in a novel. The passage is about 3 sentences. It is a summer reading book. How many pargraphs do i need and help with layout of essay.

*August 24, 2010*

**History**

Could someone please check my questions? There are only 10/30. 1.)What does the "Age of Enlightenment" refer to? a)The Middle Ages b)The philosophical atmosphere of the 18th century =c)The reassertion of absolutism by the French monarch d)The period in communist ...

*August 1, 2010*

**ENGLISH HELP!!!**

when did Romanticism became popular?? - before the Enlightenment - during the Enlightenment - at the end of the Enlightenment - a century after the end of the Enlightenment

*July 18, 2010*