Tuesday

September 1, 2015
Total # Posts: 1,470

**Chemistry**

How much energy is needed to convert 90g of water (ice) at -85 degrees C to water (liquid) at 48 degree C?
*March 28, 2012*

**Stats**

In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Further more, there is a weight limit of 2500 pounds. Assume the average weight of students, faculty and staff on campus is 150 pounds, the standard devaiton is 27 ...
*March 26, 2012*

**chemistry**

Yes the AAS is atomic absorption spectrophotometry. Also thank you for your explanation.
*March 26, 2012*

**chemistry**

Student A ran all her standards through the AAS at a specified C2H2/air flow rate. Just before she was to run her Cu sample, Student B turned down the flow rae of C2H2, thus lowering the flame temperature. Would students' A results of Cu in their sample be high, low or ...
*March 26, 2012*

**biology**

please help
*March 25, 2012*

**biology**

a class of pupils obtained results on a bar chart during a seashore investigation. they sampled the numbers of different seaweeds found in 0.25 m2 from the top shore (upper shore) to lower shore and found average percentage cover for each seaweed. describe how the pupils would...
*March 25, 2012*

**math**

Simplify the radical expression by rationalizing the denominator: 2(square root)108 / (square root) 180y Please show me how to set up and how to solve
*March 21, 2012*

**math**

Simplify th radical expression by rationalizing the denominator: 2(square root)108 / (square root) 180y Please show me how to set up and how to solve.
*March 21, 2012*

**math**

I loved the way you broke it down and explained it to me in detail. What a great help!
*March 21, 2012*

**math**

Please explain how to set this up and how to solve: A school's rectangular athletic fields currently have a length of 125 yd and a width of 75 yd. the school plans to expand both the length and the width of the fields by x yards. What polynomial is standard form represents...
*March 21, 2012*

**american history**

Sir George Grenville, King George's Chancellor of the Exchequer, enacted the Revenue Act of 1764 to raise revenue for maintenance of the British Army in America. In the colonies, it was commonly known as the _______ Act. A. Stamp B. Tea C. Sugar D. Quartering
*March 19, 2012*

**Math**

Mrs. Doris' kindergarten class is making Valentines day cards for the parents of the children. The class will be using three colors of construction paper: Pink, Red, and Purple. Mrs. Doris needs to find out the cost of the project so she can shop for the supplies duirng ...
*March 17, 2012*

**physics**

You have a 15.0 kg block of wood and you drop it from rest at a great height. It reaches terminal velocity of 31.3 m/s. If this is low-speed drag, what is the value of the constant b? If this is a high-speed drag, what is the value of the constant c?
*March 17, 2012*

**statistics**

it has been reported that 40% of all internet users have been attacked by viruses. If 20 people are randomly surveyed, find the following probabilities: a. At least 3 have been attacked b. No more than 5 have been attacked c. less than 15 have been attacked
*March 16, 2012*

**CLC**

On a wet racetrack, the maximum safe speed, to avoid sliding on a level circular curve with a radius of curvature of 56 m, is 73 km/hr. What is the coefficient of friction between the car's tires and the track surface?
*March 15, 2012*

**math**

given the function F(x)=7x+8. find each of the following f(10)= f(-6)= f(0)= please explain
*March 6, 2012*

**physics**

If it is 3m from the light source I think it will illuminate 9m^2. I know if it is 5m from the source it illuminates 25m^2 and also if it is 10m from the source it illuminates 100m^2 so it makes sense that 3m would illuminate 9m^2.
*March 6, 2012*

**algebra**

-7/3x+2/3=-11
*March 6, 2012*

**Math**

Suppose that the amount of algae is a pond doubles every 3 hours. If the pond initially contains 70 pounds of algae, how much algae will be in the pond after 9 hours? Is the answer 560? I was not sure how to set it up, but doubled it every 3 hours. If this is not correct, ...
*March 6, 2012*

**Psychology**

According to Howard independent intelligence:
*March 5, 2012*

**math**

Joe plants a rectangular garden in the corner of his field. the area of the garden is 60% of the area of the field. what is the longest side length of Joe's field, in feet. Garden: 16ft x 12ft, Field: 2x ft by 2x ft.
*March 5, 2012*

**mathq**

300 yards. I had on the numbers, but did not know to add them. Thanks, again.
*March 5, 2012*

**mathq**

Please show me how to work this. A park has two walking paths shaped like right triangles. The first path has legs 75 yd and 100 yd long. the second path has legs 50 yd and 240 yd long. What is the total length of the shorter path, in yards?
*March 5, 2012*

**Math**

Thank you so much. You guys have been a lot of help to me in the past. I will study it more.
*March 5, 2012*

**Math**

Thank you, but this did not help me.
*March 5, 2012*

**Math**

Please explain how this is set up and how to work it. thanks A rectangular box is 4cm wide, 4cm tall, and 10cm long. What is the diameter of the smallest circular opening through which the box will fit? Round to the nearest tenth of a centimeter.
*March 5, 2012*

**Psychology**

The disavantages of group intelligence tests include that.
*March 2, 2012*

**math**

Vocabulary: What are the parts that make up a polynomial?
*March 1, 2012*

**math**

In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?
*March 1, 2012*

**math**

Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.
*March 1, 2012*

**math**

Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.
*March 1, 2012*

**math**

In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?
*March 1, 2012*

**math**

A rectangular prism has a volume of 4x(cubed) + 30 x(squared) +36x. What linear expressions can represent possible dimensions of the prism? Please explain.
*March 1, 2012*

**Math**

Steve, thank you so much. You are always so helpful.
*February 28, 2012*

**Math**

Simplify the radical expression by rationalizing the denominator. 8(radicand)48/(radicand) 112x Please explain how to work this.
*February 28, 2012*

**math**

How do I set this up and solve? You are planning a rectangular patio with length that is 7 ft less than 3 times its width. The area of the patio is 120 ft squared. What are the dimensions of the patio?
*February 27, 2012*

**Math -Probab.**

In a standard deck of 52 playing cards there are 13 hearts. If 3 cards are drawn from the deck ( WITHOUT REPLACEMENT, what is the probab. that all 3 cards will be hearts? which below and why? A (13/52)cubed B (13/52)(12/51)(11/50) C (13/52)(13/51)(13/50) D (13/52)(12/52)(11/52)
*February 27, 2012*

**Math**

Laurie is holding 6 red cards and 7 black cards. If two cards are selected at random(w/out replacement), what is the probability that the first card selected is red and the second is black?
*February 27, 2012*

**Math**

We are studying Quadratic formula: A football player punts a ball. The path of the ball can be modeled by the equation y=-0.004x(squared) + x + 2.5, where x is the horizontal distance, in feet, the ball travels and y is the height, in feet, of the ball. How far from the ...
*February 27, 2012*

**Math-Probab.**

In a deck of 52 cards there are 13 hearts. If 3 are drawn from the deck, without replacement, what is the probability that all 3 cards will be hearts?
*February 26, 2012*

**math**

Amount of change over the original to find %.
*February 26, 2012*

**child care**

I dont think it is A because we use styrofoam daily at work with children
*February 26, 2012*

**Math**

Sorry, the radicand came out in a code. It is 2(radicand)108 over (radican)180y
*February 25, 2012*

**Math**

Simplifying Radicals: 2ã108 ----- ã180y The check mark represents the radicand. How do I work this problem?
*February 25, 2012*

**Ms. sue**

To Ms. Sue, Thanks for correcting my School subject. Did you answer my question? Cannot locate
*February 25, 2012*

**Old Bridge**

Sue has 8 pairs of dress shoes. How many diff. way can she arrange five pairs of her shoes in her closet?
*February 25, 2012*

**OldBridge**

Triangle ABC has sides of: AB=25 BC=4 CA=26 Angle B is a Rt. Angle. What is the approx. measure of Angle A? How do you find the answer? Thanks, Jane
*February 25, 2012*

**physics**

a ball (mass = 0.250 kg) is kicked off a porch (h = 1.50 m above the ground) with an initial velocity of 17.0 m/s at an unknown angle. what is the initial KE. What is the initial PE. what is the KE and speed of the ball when it is at the top of its ballistic arc (h = 9.50 m). ...
*February 21, 2012*

**Algebra**

Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once sold 140 shirts in a ...
*February 21, 2012*

**Math**

Find a linear equation whose graph is the straight line with the given property. Through (2, −7) and (1, 1) I got -8x-23, I know it doesn't match, maybe its the wrong formula Find a linear equation whose graph is the straight line with the given property. Through (1/...
*February 16, 2012*

**chemistry**

a 100 mL {100 grams} of water at 4.0 degrees celsius is heated until its tempurture is 37 degrees celcus. if the specific heat of water is 4.18 joules/grams degrees celcus calculate the amount of heat energy needed to cause this rise in tempurture
*February 15, 2012*

**science**

a 100 mL {100 grams} of water at 4.0 degrees celsius is heated until its tempurture is 37 degrees celcus. if the specific heat of water is 4.18 joules/grams degrees celcus calculate the amount of heat energy needed to cause this rise in tempurture
*February 15, 2012*

**Math**

We are studying pythagorean Theorem. How do I set this up to solve? A jogger goes half a mile north and then turns west. If the jogger finishes 1.3 mi from the starting point, how far west did the jogger go?
*February 15, 2012*

**Math**

A cube has all sides with a length of 7k^9n^8. The volume of a cube is found by raising the length of one side of the 3rd power. What is the final value of the coefficient when simplifying the expression? Is the answer 343?
*February 15, 2012*

**Math**

(6q^6)^-4 When I worked this I got 1/1296q^24. One of the choices given was 1/1296q^-24. The other choices were: 6q^1296, 1296q^2, 6q^-24. Is the answer any of these choices?
*February 15, 2012*

**Math**

Thank you so much for taking the time to explain it.
*February 15, 2012*

**Math**

Simplify: (-h^4)^5 Would it be -h^20 or h^20
*February 15, 2012*

**Algebra**

Find the slope of the given line, if it is defined y = (x + 4)/7 I can't find the answer. I don't understand what went wrong with my calculation. Thank you.
*February 15, 2012*

**Algebra**

I got it, its undefined
*February 15, 2012*

**Algebra**

Find the slope of the given line. 2x + 3 = 0 Do I use the slope formula? I don't know how to do it. Thanks
*February 15, 2012*

**English**

When Romeo and Juliet meet they speak just fourteen lines before their first kiss. These fourteen lines make up a shared sonnet, A sonnet is a perfect, way of forming a poem writing about love. In the fifth scene the lovers share a sonnet which use images of saints and ...
*February 15, 2012*

**English**

i wasn't going to right this down i was just going to wright ideas down on my page an use them
*February 15, 2012*

**English**

could you please check this!
*February 15, 2012*

**English**

Is this what i could right for it all is their anything else i could add sorry for all these questions thanks
*February 15, 2012*

**English**

A sonnet is a perfect, idealized poetic form often used to write about love.Romeo uses religious imagery to convey his feelings. The use of words such as "holy shrine, faith, pilgrims, sin, devotion" give a feeling of deep sincerity to his first talk with Juliet. ...
*February 15, 2012*

**English**

no not really
*February 15, 2012*

**English**

Thank very much that's a great help,would this be the reason why their is sonnetWhen Romeo and Juliet meet they speak just fourteen lines before their first kiss. These fourteen lines make up a shared sonnet, with a rhyme scheme. A sonnet is a perfect, idealized poetic ...
*February 15, 2012*

**English**

Love at first sight: The ball Romeo sees her first. Their first words are a shared sonnet: analyse the reason for this. Analyse the language and the imagery. What do we learn about her feeling's?
*February 15, 2012*

**English**

At the great hall of the Capulets Romeo sees Juliet from across the room, and asks a servingman who she is. The servingman does not know. Romeo is transfixed; Rosaline vanishes from his mind and he declares that he has never been in love until this moment. Moving through the ...
*February 15, 2012*

**English**

i know i didn't want the answers i just wanted help Thanks
*February 15, 2012*

**English**

love at first sight the ball romeo sees her first. their first words are a shared sonnet analyse the reason for this. analyse the language and the imagery what do we learn about her feeling? ROMEO AND JULIET
*February 15, 2012*

**Physics**

A block (m = 38.0kg) sits on an inclined plane of 38 degrees. If there is no friction,k what magnitude force is needed to keep the block from sliding? If there is friction, with coefficients 0.580 and 0.630, what is the maximum magnitude force that can be applied before the ...
*February 14, 2012*

**english**

there seems to be something wrong with the names a different one keeps coming up each time
*February 13, 2012*

**english**

wondering would you know this..what do we learn about juliet from this?
*February 13, 2012*

**english**

We first meet juliet (act 1 scene 3) she has a conversation with her mother about marriage. discuss this. what do we learn about juliet from this? ROMEO AND JULIET
*February 13, 2012*

**math**

Solve by factoring: 12 w(squared) = 28w +5
*February 12, 2012*

**Math**

Reiny, thank you so much. You broke it down so it was easy to understand.
*February 12, 2012*

**Math**

How do I set this up and how do I solve: The sum of two numbers is 20 The difference between 3 times the larger number and twice the smaller number is 40. What is the larger number?
*February 12, 2012*

**math**

Please show me how to set this up and how to solve: A ribbon with straight edges has an area of 24 inches squared. Its width is x and its length is 2x + 13. What is the width of the ribbon in inches?
*February 12, 2012*

**Math**

A school is fencing in a rectangular area for a playground. It plans to enclose the playground using fencing on three sides (One length is a wall) The school has budgeted enough money for 75 ft of fencing material and would like to make a playground with an area of 600 ft ...
*February 12, 2012*

**physics**

A car, mass - 1950 kg, accelerates at +2.33 m/s (squared). Find the magnitude of the normal force acting on the car. If later, when the car is cruising at 26.5 m/s, the driver applies a force of magnitude 10,000 N to stop the car. What is the distance it takes for the car to ...
*February 12, 2012*

**Science**

A 70kg person dives horizontally from a 200kg boat with a speed of 2 m/s. What is the recoil speed of the boat?
*February 11, 2012*

**Math**

Please show me how to set it up and solve: You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?
*February 11, 2012*

**math**

Please show me how to set it up and solve: You are making a rectangular table. The area of the table should be 10ft squared. You want the length of the table to be 1ft shorter than twice its width. What should the dimensions of the able be?
*February 11, 2012*

**Math**

Please show me how to set it up and to solve: A cell phone company sells about 500 phones each week when it charges $75 per phone. It sells about 20 more phones per week for each $1 decrease in price. The company's revenue is the product of the number of phones sold and ...
*February 11, 2012*

**Math**

The area of a rectangle is 6n(to the power of 2) + n - 2. What is the expression that represents the perimeter of the rectangle?
*February 6, 2012*

**Math**

I'm sorry, its r(x) = (4x^2 + 1)/(4x^2 − 1); x = −1, 0, 1, ..., 9
*February 4, 2012*

**Math**

First, give the technology formula for the given function and then use technology to evaluate the function for the given values of x. (Round your answers to four decimal places.) r(x) = 4x2 + 1/4x2 − 1; x = −1, 0, 1, ..., 9 a)(4x^2 − 1)/(4x^2 + 1) b)(4x + 1)^...
*February 4, 2012*

**English**

In MLA (version 7), how do cite a textbook in a works cited page? Would it be the same as if you were citing an encyclopedia article or does it have a different citation?
*February 2, 2012*

**Math**

Sometimes I get confused with the inequalities. You have $47 to spend on music and movie downloads. Each album down load cost $7 and each movie download costs $8. Write and graph a linear inequality that represents this situation. Let x represent the number of albums and y the...
*February 2, 2012*

**Math**

Reid and Maria both play soccer. This season, Reid scored 4 less than twice the number of goals that Maria scored. The difference in the number of goals they scored was 6. How many goals did each of them score?
*February 2, 2012*

**Solid mensuration**

Find an equation of the circle tangent to x + y = 3 at (2,1) and with center on 3x - 2y - 6 = 0
*January 30, 2012*

**Math**

How do I set this up and solve? You are planing a rectangular dining pavilion. Its length is 3 times its width x. You want a stone walkway that is 3 ft wide around the pavilion. You have enough stones to cover 396 ft squared and want to use them all in the walkway. What should...
*January 29, 2012*

**History**

How does most state constitutions differ from the US Constitution?
*January 27, 2012*

**History**

The Bill of rights was ratifid by what fraction of all state legislatures?
*January 27, 2012*

**History**

What is the function of the Articles of the Constitution?
*January 27, 2012*

**Math**

Please explain to me how to solve: A circular mirror is surrounded by a square metal frame. The radius of the mirror is 5x. The side length of the metal frame is 15x. What is the area of the metal frame? Write your answer in factored form.
*January 26, 2012*

**Math**

A circular table is painted yellow with a red square in the middle. The radius of the tabletop is 6x. The side length of the red square is 3x. What is the area of the yellow part of the tabletop? Write your answer in factored form.
*January 26, 2012*

**Math**

How do I set this up and how to solve it? Russ bought 3 medium and 2 large submarine sandwiches for $29.95. Stacy bought 4 medium and 1 large submarine sandwiches for $28.45. What is the price for each medium and each large submarine sandwich?
*January 26, 2012*