Wednesday

October 7, 2015
Total # Posts: 3,175

**Chemistry**

How much heat is required to raise the temperature of a 65-g sample of water from 32 degrees celsius to 65 degrees celsius
*February 11, 2012*

**Algebra**

The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?
*February 11, 2012*

**Algebra**

The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?
*February 11, 2012*

**Math**

y/2-5y/6+1/3=1/2 Please help me solve this problem.
*February 11, 2012*

**Math**

Combine like terms. Please help me figure this out. 3p square6 -7q+14p square6
*February 9, 2012*

**algebra**

Suppose that you can spend $72 for compact discs and videos. Discs cost $18 and videos cost $9 each. write a system of inequalities that shows the various number of discs and videos that you can buy.
*February 8, 2012*

**chemistry **

a 7.500-mg sample of chromium-55 is analyzed after 14.0 min and found to contain 0.469 mg of chromium-55. what is the half-life of chromium-55
*February 8, 2012*

**Geometry (Logic)**

Which argument is not valid? 1.) Given: a→b a Conclusion: b 2.) Given: a˅b ~b Conclusion: ~a 3.) Given: a→b ~b Conclusion: ~a 4.) Given: a→b b→~c Conclusion: a→~c
*February 7, 2012*

**algebra**

Assume you work at a company where you are paid hourly. You are paid $8.60 per hour for regular time (less than or equal to forty hours) and time and a half for overtime hours up to fifty hours in one week. If you are asked to work fifty or more hours in one week you are paid ...
*February 7, 2012*

**Chemistry**

What is the density of a gasoline sample that has a volume of 13.3 mL abd a mass of 8.86 grams?
*February 6, 2012*

**Chemistry**

What is the volume of 4.00 grams of air if the density of air at the time of the measurement is 1.19 g/l?
*February 6, 2012*

**Statistics-Matrix of Transition Probabilities**

Given the following matrix of transition probabilities, write three equations that, when solved, will give the equilibrium state values. P = large bracket with a b on top and c d directly under that, closed large bracket. Thanks.
*February 6, 2012*

**math**

9x-8y=-2
*February 5, 2012*

**Algebra**

11. The drama club is selling tickets to its play. An adult ticket costs $15 and a student ticket costs $11. The auditorium will seat 300 ticket-holders. The drama club wants to collect at least $3630 from ticket sales. a) Write and graph a system of four inequalities that ...
*February 4, 2012*

**physics**

If you drop object,acceleration to groud is 10m/s2, if you throw it would it be greater than 10m/s2? (ignore air resistance) Why or why not?
*February 4, 2012*

**Statistical Quality Control /UCL's & LCL's**

THANK YOU, MathGuru, for your help!
*February 4, 2012*

**Statistical Quality Control /UCL's & LCL's**

PLEASE HELP me solve the following problem: A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information that it was intended to hold. In the past, only 5% of these diskettes have had bad sectors. If ...
*February 4, 2012*

**Math**

A box contains 3 red marbles, 6 blue marbles, and 1 white marble. The marble are selected at random, one at a time, and are not replaced. Find the probability. P(blue and red) Please help me
*February 2, 2012*

**Physics**

but i don't have m...
*February 2, 2012*

**Physics **

A cannon is fired from a cliff 190 m high downward at an angle of 21° with respect to the horizontal. If the muzzle velocity is 34 m/s, what is its speed (in m/s) when it hits the ground?
*February 2, 2012*

**alg2/trig**

starting salary for a job is $30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. please somone help!
*February 1, 2012*

**Chemistry **

A 5 gram sample of a hydrate of BaCL2 was heated, and only 4.3g of the anhydrous salt remained. What percentage of water was in the hydrate?
*February 1, 2012*

**Quantitative Analysis Simulation Modeling**

Define operational gaming and give an example.
*February 1, 2012*

**math**

Total purchase is: $100.00 plus $15.00, plus $15.00 or $130.00. $130.00 minus the $50.00 (gift card) leaves the customer with a balance of $80.00 to pay before taxes.
*February 1, 2012*

**math**

$22.00 - simply divide 66 by 3 (or 1/3)
*January 31, 2012*

**trig**

starting salary for a job is 30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. how much money would you earn in the fifth year?
*January 31, 2012*

**math**

6 Student tickets X $8.00 = $48.00 $78.00 minus the $48.00 = $30.00 $30.00 divided by $10.00 Adult Cost = 3 adult tickets.
*January 31, 2012*

**math**

a car traveling on a straight road at 20 meters per second accelerates to 26 meters per second in 12 seconds. what is the total distance traveled by the car? please help!
*January 31, 2012*

**chemistry**

A piper delivers 10.04, 10.02, 10.08, and 10.06 mL in consecutive trails. Find the mean volume and the average deviation from the mean...please help some responded but didn't answer the question.
*January 31, 2012*

**chemistry**

Can someone answer please Determine the boiling point of water at 698.5 mm Hg?
*January 31, 2012*

**chemistry**

Determine the boiling point of water at 698.5 mm Hg.
*January 31, 2012*

**physics**

A plane leaves Seattle, flies 77.0 mi at 22.0 degrees north of east, and then changes direction to 50.0 degrees south of east. After flying at 119 mi in this new direction, the pilot must make an emergency landing on a field. The Seattle Airport facility dispatches a rescue ...
*January 30, 2012*

**math**

mallory emailed a funny cartoon to Ann. she told ann to send it to five friends with instructions for each of them to send it to five other friends. after four cycles of emailing,how many cartoons will have been sent? the answer is 156 but i dont know how to get thy answer, ...
*January 29, 2012*

**American Government POL 201**

Locke" use of the term "property"
*January 29, 2012*

**Biology**

can you explain this in words?
*January 29, 2012*

**Biology**

What is the function of water in cellular respiration and photosynthesis? Detailed answer please
*January 29, 2012*

**Biology**

true
*January 29, 2012*

**alg2/trig**

what is the smallest value of k that would make the roots of the equation x^2-2x-k imaginary? please help, no idea how to do this.
*January 23, 2012*

**trig**

How do you decide if csc=74 is greater than or less than cos=74 without using a calculator?
*January 23, 2012*

**chemistry**

A tank contains a mixture of 3.0 mol of nitrogen 2.0 mol of oxygen and 1 mol of carbon dioxide at 25 degrees and a total pressure of 10 ATM calculate the partial pressure in torr of each gas?
*January 19, 2012*

**Electric **

if you measure voltage with a multimeter are the leads of the circuit connected in a series or parallel its series right
*January 19, 2012*

**Electric **

measure resistance with a multimeter in a circuit is the power going to be off or on i think ON
*January 19, 2012*

**algebra**

use this 1/2(b1 + b2)
*January 19, 2012*

**electricity**

if you measure voltage with a multimeter are the leads of the circuit connected in a series or parallel its series right
*January 19, 2012*

**electricity**

measure resistance with a multimeter in a circuit is the power going to be off or on i think ON
*January 19, 2012*

**electricity**

1.2 volts RIGHT
*January 19, 2012*

**electricity**

how many volts does a nickel cadmium produce? VOLTAGE FOR ONE CELL
*January 19, 2012*

**History**

Of the social contract
*January 18, 2012*

**History**

Pelase help me by finding some examples out of this contract. Having undertaken, for the glory of God, and the advancement of the Christian faith and Houour of our King and Country, a Voyage to plant the First Colony in the Northern parts of Virginia, do by these presents ...
*January 18, 2012*

**ELA**

"It is only with the heart that one can see rightly" and my interpretation of this quote is that If you truly believe in yourself, you can make the right decisions. I need help to relate this quote to ROmeo and Juliet with an appropriate literary element.
*January 16, 2012*

**math**

Find the exact circumference of a circle with diameter equal to 8 ft. I know the answer is 25 ft but the answers I have to choose from are 8, 16 or 64
*January 15, 2012*

**math**

Find the exact circumference of a circle with diameter equal to 8 ft.
*January 15, 2012*

**math**

If you put one dollar a day in the bank and earn 20 percent interest per month, how much would you have in 100 years
*January 12, 2012*

**english**

38. Which of the following sentences contains a helping verb? (1 point) Eduardo looked in the basement, but the puppy wasn’t there. Sakkom hung wind chimes because she loves the sound. Roger has never performed a solo in his life. The leader of the troop took the scouts ...
*January 11, 2012*

**Biology - Genetics**

Please help me!!!! I need help with this practice test question. In Guinea pigs, the brown coat (B) is a dominant over the cream-coloured coat (b), and straight hair (H) is dominant over curly hair (h). Using a Punnett square, complete the cross between a heterozygous brown, ...
*January 10, 2012*

**Math**

Identify the outlier in the data set, and determine how the outlier affects the mean, median, mode and range of the data set. 7,7,4,9,6,26,4,5,8,4 Please help me
*January 10, 2012*

**basic electricty **

Two Ways Of Decreasing The Current In A Circuit? IS it this pentiometer and ampostat or this Yep, lower the voltage or increase the resistance.
*January 10, 2012*

**BASIC ELEC **

NAME THE 5 REQUREMENTS NECESSARY TO HAVE A SAFETY OPERATING ELECTRICAL CIRCUIT 1. CONDUCTOR 2. RESISTOR 3. SWITICH 4. CIRCUIT BREAKER IS THAT CORRECT? NAME 4 CONDUCTORS OF ELECTRICITY 1. COOPER 2. ALUMINIUM 3. BRASS 4. IRON IS THAT CORRECT ? WHAT ARE THE 4 FACTORS AFFECTING ...
*January 10, 2012*

**statistics**

could someone please help me ASAP?
*January 10, 2012*

**statistics**

I'm stuck on a question in MM207... Assume you want to estimate with the proportion of students who commute less than 5 miles to work within 2%, what sample size would you need?
*January 10, 2012*

**ALGEBRA (SQUARE ROOT HELP)**

am confused how would u do this 3√(3)
*January 9, 2012*

**ENGLISH(romeo & Juliet)**

What is the plan the nurse brings back from Romeo? is it this ? The nurse determines to get a ladder, which will allow Romeo to climb into Juliet’s room that night—because they will be married then and will do what married people do.
*January 9, 2012*

**6th grade math**

And you need to do the expirement to answer these questions
*January 9, 2012*

**6th grade math**

Alicia the fraction and mixed number i 1 and 5/14
*January 9, 2012*

**chemistry**

1. Show the e- dot structure for CuCl2, I2 and H2O. State the bond type and name. Show charges where necessary.
*January 8, 2012*

**chemisstry**

1. Show the e- dot structure for CuCl2, I2 and H2O. State the bond type and name. Show charges where necessary.
*January 8, 2012*

**ENGLISH**

is that right ???????????
*January 5, 2012*

**ENGLISH**

I dont get this from Act 2 Scene 3 What are your feelings about Friar Lawrence's involvement? Do you think he is right or wrong? Why? Use two quotes to support your answers. ITS FROM ROMEO AND JULIET
*January 5, 2012*

**MATH**

the square of a number is equal to the sum of 21 and 4 times the number. find the number X=-3 X=7 RIGHT?
*January 4, 2012*

**pre Alg**

3g - 9 = 6 +9 +9 3g=12 divide by 3 you get g = 4
*January 4, 2012*

**MATH**

so its x=7 x= -3
*January 4, 2012*

**MATH**

ok thanks
*January 4, 2012*

**MATH**

the square of a number is equal to the sum of 21 and 4 times the number. find the number WHATS THE EQUATION (AM CONFUSED ?)
*January 4, 2012*

**MATH PLEASE HELP**

its 4 and 5
*January 4, 2012*

**MATH PLEASE HELP**

the sum of the squares pf two postive consecutive even integers is 41. Find the integers.
*January 4, 2012*

**Economics (inflation)**

Hello! Could someone please check my answers for the first 2 problems and help me out with the 3rd? Thanks! 1. If the CPI in 1863 was 9 and the CPI in 2000 was 171.9, how much has inflation increased (%) since 1863? I used the inflation rate equation and got a 1898.89% ...
*January 4, 2012*

**Calculus I Quick Optimization Problem**

Could you please explain this problem step by step, thank you! You are planning to make an open rectangular box that will hold a volume of 50 cubed feet. What are the dimensions of the box with minimum surface area?
*January 3, 2012*

**Living environment(check please) **

When the food relationship in a habitat are illustrated by means of diagram, the result is always a complicated web like pattern. This is due to the fact that 1 many consumers are adapted to use more than one food source 2 producer organisms always outnumber the consumer ...
*January 3, 2012*

**Living environment**

IN a natural community in New York State, the producer organisms might include (1) bacteria , fungi, and viriuses (2) deer, rabbits , and squirrls (3) grasses, maple trees , and weds (4) trout, peas, and earthworms I the answer 3 Which sequence illustrates a generalized food ...
*January 3, 2012*

**Living environment**

The apperance of the greatest percentageof white mice occured (1) before the maximum number of days of snow cover (2)at the same time as the maximum number of days of snow cover (3) after the maximum number of days of snow cover (4) both before and after the maximum number of ...
*January 3, 2012*

**Living environment**

1.All of Earth's water, land, and atmosphere within which life exists is known as a population b. an ecosystem c.the biosphere d. a biotic community IS THE ANSWER C
*January 3, 2012*

**MATH plz helo check my answer**

-3 ≤ 2x - 5 < 13 i thing the answer is 1 < x < 9 and how would you graph this on a number line so MY NUMBER LINE IS 1 TO 9, SO AT 1 i have a closed circle and at 9 i have a open circle and its shaded in is it right
*January 2, 2012*

**ALGEBRA**

Factor: 2x^2 - 5x + 2 am confused with this problem?
*December 30, 2011*

**MATH**

thanks
*December 30, 2011*

**help check please**

PLEASE CHECK THESE ANSWERS
*December 25, 2011*

**ALGEBRA 1**

ARE THESE ANSWERS RIGHT ? Express as a trinomial: (2x-3)(x+7) IS THE ASNWER 2x^2 + 11x - 21 WHAT IS THE VALUE OF 2 times 5^-2 IS THE ANSWER 2/25 DIVIDE: x/x^2-49 divide by 5x^3/x^2 + 9x + 14 IS THE ANSWER x+2/5x^2(x-7)
*December 25, 2011*

**MAth**

thanks
*December 25, 2011*

**ALGEBRA**

thanks
*December 23, 2011*

**ALGEBRA**

how to do this find the volume of a cylinder if the radius is 8 inches and the height is 10in (ANSWER MAY BE LEFT IN TERMS OF PIE)
*December 23, 2011*

**SraJMcGin please help with Spanish, thank you!**

Can you please correct these two sentences, thank you for the help earlier by the way. =) La mayoría de sus pinturas marinas y meticulosas son oleo en lienzo The majority of his meticulous, marine paintings are oil on canvas. La verdad es que la marina yo no le importa...
*December 18, 2011*

**Spanish**

Can someone please proofread a biography I wrote? The English translation is below the Spanish. Salvador Abril y Blasco era un marinista que ya gozaba de buen reputación en el mundo artístico, y que ha obtenido algunas medallas en las Exposiciones Nacionales. &...
*December 18, 2011*

**algebra**

N(x)=-0.6^2+15.6x+12, where x is the number of days since the concert was first announced, When will daily ticket sales peak and how many tickets will be sold that day ticket sales peak- number of tickets sold-
*December 17, 2011*

**algebra**

The width of a rectangle is 3ft less than the lenght. The area is 4ft^2. Find the lenght and the width
*December 17, 2011*

**algebra**

The number of tickets sold each day for upcoming perfomance of Handel's Messiah is given by N(x)=-0.6x^2+15.6x+12, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
*December 17, 2011*

**algebra**

1.Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in stadard form ax^2+bx+c=0 Solution 7, only solution 2.The width of a rectangle is less than the length. The area is 4ft^3. Find the length and the width.
*December 17, 2011*

**psy**

On p. 84 of the text, in the Thinking Clearly section, the conduction action potentials and activation of neurotransmitters is related to a row of mousetraps on a wobbly shelf. Think of another analogy you can use to describe the conduction of action potentials and activation ...
*December 15, 2011*

**english**

Fill the bags with donated gifts for the orphanage. The word BAGS is what kind of compliment? I.e. predicate adjective, direct object, indirect object, predicate nominative
*December 13, 2011*

**Statistics**

Suppose you gave a skill test to 3 different PE classes and want to know if they differ in terms of their scores. The skill tests scores are as follows: Class 1: 23, 21, 19, 22 Class 2: 18, 19, 21, 18 Class 3: 21, 20, 19, 22 Conduct an ANOVA and report the test statistic ...
*December 13, 2011*

**Finance **

why are dates on financial statements important?
*December 12, 2011*