Monday

May 2, 2016
Total # Posts: 793

**Chemistry**

Methane (CH4) is the major component of natural gas. 2.5 moles of methane were placed in a commercial colorimeter and subjected to a combustion reaction. The reaction released 2800 kJ of energy. Compare this energy value to the energy values of paraffin and diethylene glycol. ...
*April 23, 2016*

**Chemistry of Life Science**

1. In the introduction to this experiment, it states that you reacted 2.5 grams of salicylic acid with an excess of acetic anhydride, meaning that there would be a higher number of moles of acetic anhydride then salicylic acid, proportionally. Assuming the density of acetic ...
*April 6, 2016*

**math**

5 part question. 1st part is Mr. Black has 3 baskets of apples in his store. in each basket are 9 red, 6 granny, 5 empire, 3 Fuji and 1 honeycrisp. What is the total number of each kind in the basket. We have 72 as the answer.
*October 28, 2015*

**math**

chuck traveled 120 miles in 2 hours. Find the number of miles per hour he traveled
*October 22, 2015*

**math**

Of the set -5,,5,-3,8 which two numbers have the same absolute value?
*October 10, 2015*

**math**

Of the set -5,,5,-3,8 which two numbers have the same absolute value? explain
*October 10, 2015*

**health**

Self actualization means when you focus on yourself all the time
*October 8, 2015*

**physics**

if a car moves 12km North, 19km East, and 12km South, a) Find the total distance covered. b) Find the car's displacement.
*September 28, 2015*

**Math**

Find the missing coordinate of p, using the fact that p lies on the unit circle in the given quadrant. P( ), -3/7
*September 26, 2015*

**Algebra**

You normally buy a crate of wine for $75. One crate has 6 bottles of wine. After a month, the store clerk informs you that the same crate of wine now costs $82. However, there are 7 bottles in a crate. To the nearest cent, determine the average cost of the crate from last ...
*September 14, 2015*

**math**

0.0720647773279352
*September 14, 2015*

**Math**

2 quarters 5 dimes 11 nickels 1 penny
*September 14, 2015*

**Math**

2 quarters 5 dimes 11 nickels 1 penny
*September 14, 2015*

**MATH**

If the demand function for a commodity is given by equation p^2+12q=18 and the supply function is given by the equation 700-p^2+6q=0, find the equilibrium quantity and price
*June 15, 2015*

**math**

For f(x) and g(x) given below, find the following, f(x) = (x-1)^5, g(x)=1-6x a) (f of g)(x)= -7776x^5 b) (g of f)(x)= -6x^5+30x^4-60x^3+60x^2-30x+7 c)f(f(x)= d) f^2(x)=(f*f)(xx)= Im stuck on c and d
*June 15, 2015*

**statistics**

what is the r value
*June 13, 2015*

**ENGLISH**

#speech. TopIc:afRican slaughter rituals should be allowed in the suburbs?
*April 18, 2015*

**solve math problem**

A group of 9 workers decides to send a delegation of 3 to their supervisor to dicusss their grievences. c.) If there are 4 women and 5 men in the group, how many delegations would include at least 1 women? I know I have to use combination C(9,1)x C(9,4) but I'm lost after ...
*April 10, 2015*

**Algebra**

How do I find the cost of a cell phone plan if I use 400 day-timme minutes. is it the cost times the minutes plus contracts if any or just cost times the minutes. Please help me!
*March 10, 2015*

**intermeidatealgebra**

9a+7b/2-9a-7b/2
*February 25, 2015*

**intermediatealgera**

2x/x-2-4/x-2
*February 25, 2015*

**intermediatealgera**

9y^2/y-1+-9y/y-1
*February 25, 2015*

**intermeidatealgebra**

x+3/15+8/15
*February 25, 2015*

**Math**

AorC
*February 25, 2015*

**algebra**

2(-2)-4(-3)/5-8 -4-4(-3)/5-8 -4+12/5-8 -8/3
*January 25, 2015*

**algebra**

5X2-3to the second power over [3to the second power-(-2)] to the second power. 5X2=10-9=1 9X2=18=134
*January 25, 2015*

**health **

A friend plays video games 6 hours a day and gets upset when called to dinner with the family. This is a sign of? (a)anxiety disorder (b)a phobia (c)bipolar disorder (d)impulse control disorder
*December 31, 2014*

**college algebra**

Find the Inverse (x)=√2x+9
*December 1, 2014*

**math**

a city is served by two newspapers-the Tribune and the Daily News. Each Sunday a reader purchases one of the newspapers at a stand. The following transition matrix contains the probabilities of a customers buying a particular newspaper in a week given the newspaper purchased ...
*November 14, 2014*

**Algebra please help out **

In each bouquet of flowers, there are 4 roses and 6 white carnations. Complete the 4 and 6 table to find out how many roses and carnations there are in 4 bouquets of flowers? Please help answer
*October 29, 2014*

**Algebra**

Please help out thx
*October 28, 2014*

**Algebra**

Write 3 ratios equivalent to the ratio of boys to girls on the bus is 20/15? Please help answer
*October 28, 2014*

**Limits**

Lim of [1/(3+x)]-(1/3)/x as x approaches 0 is?
*September 14, 2014*

**math**

Rainfall for September in Fiji averages 11" according to World Travel Guide. This year it rained 3% less. How many inches did it rain this year? (Round to the nearest tenth.)
*September 8, 2014*

**Newtons Law of Cooling**

using Newton's Law of Cooling: At 10:30 am the medical examiner arrives at a crime scene where a dead body has been found. The temperature of the body is 80 degrees F and the thermostat for the room in which the body was found is set at 68 degrees F. One hour later the ...
*September 4, 2014*

**physics**

Jack drops a stone from rest off of the top of a bridge that is 24.4 m above the ground. After the stone falls 6.6 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time. What was the initial velocity of Jill's rock? Assume upward is ...
*August 30, 2014*

**Accounting**

On October 10, 2010, Mason Engineering Company completed negotiations on a contract for the purchase of new equipment. Under the terms of the agreement, the equipment may be purchased now or Mason may wait until January 10, 2011, to make the purchase. The cost of the equipment...
*August 13, 2014*

**business**

describe scenarios that depicts the different ways to manage business commerce
*June 8, 2014*

**Delcambre High**

a trail mix recipe calls for 1/3 pound of mixed nuts, 4/15 pound of raisins and 2/5 pounds of granola. What is the ratio of raisins to mixed nuts in simplest form?
*June 4, 2014*

**POL201**

The tendency of Congress to defer to the President in foreign policy has at times led to
*May 16, 2014*

**Algebra**

factoring 18z+45+z^2
*May 6, 2014*

**science**

Hello Ms.Sue I think the answer to question number 5. Is Kinetic. Could you let me know if this is correct? Thank you!
*May 6, 2014*

**Algebra**

Factoring 9w-w^3
*April 30, 2014*

**math**

Evidence of an increased risk of lung cancer associated with cigarette smoking was sought by Doll and Hill. In one study, 649 lung cancer cases were matched by age, and gender to 649 controls; 647 of the cases and 622 of the control had a history of smoking cigarettes. a. Name...
*April 28, 2014*

**epidemiology**

In another study, the smoking habits of 34,445 male physicians were obtained by mailed questionnaires. Deaths among these physicians over the subsequent years were identified though contact with the office of the Registrar General. The death rates from lung cancer of these ...
*April 27, 2014*

**epidemiology**

In another study, the smoking habits of 34,445 male physicians were obtained by mailed questionnaires. Deaths among these physicians over the subsequent years were identified though contact with the office of the Registrar General. The death rates from lung cancer of these ...
*April 27, 2014*

**Epidemiology**

Evidence of an increased risk of lung cancer associated with cigarette smoking was sought by Doll and Hill. In one study, 649 lung cancer cases were matched by age, and gender to 649 controls; 647 of the cases and 622 of the control had a history of smoking cigarettes. a. Name...
*April 27, 2014*

**Algebra**

5670 compounded annually at a 3.5 interest rate once a year yields what in interest
*April 25, 2014*

**Algebra**

P=A (1+r)6 -n P=2000 (1+0.05) ^-n P=2000 (1.05)^ -12 =?
*April 24, 2014*

**Algebra**

You did not give an answer
*April 24, 2014*

**Algebra**

2000/1.05^12
*April 24, 2014*

**STATS **

Suppose we are testing the null hypothesis H0: ì = 20 and the alternative Ha: ì 20, for a normal population with ó = 5. A random sample of 25 observations are drawn from the population, and we find the sample mean of these observations is = 17.6. The P-...
*April 5, 2014*

**Stats**

Damon, thank you!
*March 29, 2014*

**Stats **

Assume that event A occurs with probability 0.4 and event B occurs with probability 0.5. Assume that A and B are disjoint events. The probability that either event occurs (A or B) is A. 0.0 B. 0.7 C. 0.9 D. 1.0.
*March 29, 2014*

**Stats**

These are my options. A.0.30 B.0.40 C.0.60 D.0.90
*March 29, 2014*

**Stats**

I added the mean of 21 and SD of 10 and the probability is 0.9715. That is not one of my options, please help!
*March 29, 2014*

**Stats **

The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is
*March 29, 2014*

**Stats**

Let the random variable X be a random number with the uniform density curve given below. P(0.6 < X < 0.9) is
*March 29, 2014*

**Statistics**

Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ score separating the top 37% from the others. Answer in one decimal place.
*March 28, 2014*

**Chemistry**

What is the enthalpy change if 25.0 g of methane are burned? 890kJ of heat released for every mole of methane that reacts. CH4 + 2O2 = CO2 + 2H2O
*March 18, 2014*

**Stats**

4. A least squares regression line to predict a student’s Stat145 test score (from 0-to-100) from the number of hours studied was determined from a class of 55 Stat145 students: ̂ = 48.2 + 2.21x. One student in the class studied for 18 hours and scored 82 on the exam...
*March 7, 2014*

**Statistics**

Thank you! :)
*February 25, 2014*

**Statistics **

In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a particular controlled distance (measured in thousands of miles), and afterward the tread depth was measured. Tread depth is measured in “mils.” Here...
*February 25, 2014*

**STAT - Please check answer**

In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a particular controlled distance (measured in thousands of miles), and afterward the tread depth was measured. Tread depth is measured in “mils.” Here...
*February 24, 2014*

**Math **

Archaeologists often find only parts of ancient human remains. For example, they may find a small finger bone, called the metacarpal bone. Is it possible to predict the height of a human from the length of his or her metacarpal bone? To investigate, a researcher measures the ...
*February 20, 2014*

**STATS**

Is the answer C?
*February 20, 2014*

**STATS**

So B is not the correct answer?
*February 20, 2014*

**STATS**

Archaeologists often find only parts of ancient human remains. For example, they may find a small finger bone, called the metacarpal bone. Is it possible to predict the height of a human from the length of his or her metacarpal bone? To investigate, a researcher measures the ...
*February 20, 2014*

**algebra & trigonometry**

One number x. So, the other number: 210 – x. According to the given condition, x^2 = 210 – x, ox^2 + x – 210 = 0, or (x + 15) (x – 14) = 0, or x = –15 or 14. Therefore, one number is either –15 or 14 and the other number is either (210 + 15) = 225...
*February 11, 2014*

**STATS **

Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. Using the 68-95-99.7 rule, what is the lower bound for the weight of the top 2.5% of students?
*February 11, 2014*

**STATS**

Yes! Thanks. :) I have one more question. Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. Using the 68-95-99.7 rule, what is the lower bound for the weight of the top 2.5% of students.
*February 10, 2014*

**STATS**

Thank you that helps a lot. I have been struggling with this. C. What percent of students weigh less than 60.1 kilograms? Z=(60.1-75.5)/10.3=-1.49 I checked the z-table and the probability is .0681. .0681*100=6.8% Is this problem correct?
*February 10, 2014*

**STATS**

Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. B. What percent of students have weights greater than 80.1 kilograms?
*February 10, 2014*

**STATS**

Thanks!
*February 10, 2014*

**STATS **

Suppose that the average weight of students in a statistics class is 75.5 kilograms with a standard deviation of 10.3 kilograms. A. 45% of the student weights are above ____ kilograms? Z=.3264=x-75.5/10.3 Now what?
*February 10, 2014*

**stats**

how do I find the margin of error for the given values of c,s,and n c=0.95, s=2.1,n=100
*December 5, 2013*

**Physical Science**

(c) ____Cl2(g) + ____KBr(aq)h____Br2(l ) + ____KCl (aq) (d) ____CH4(g) + ____O2(g)h____CO2(g) + ____H2O(l )
*December 4, 2013*

**Math URGENT PLEASE**

If a car in 1963 cost @$2,400 How much would that be in 2012
*November 25, 2013*

**Math URGENT PLEASE**

Please Help, The last question has to be done by midnight. A chevy Bel Air, a classic car today, cost $2,400.0 new in mid-1963. How much would that be in 2012 dollar.
*November 25, 2013*

**algebra**

Please Help, The last question has to be done by midnight. A chevy Bel Air, a classic car today, cost $2,400.0 new in mid-1963. How much would that be in 2012 dollar.
*November 24, 2013*

**Mathematics**

calculate the CPI for this year and for 5 years from now. Project the price 5 years from now of an item that you commonly buy. **Dunkin Donuts Coffee**** $2.04 Please help, I know I am missing something. Thanks
*November 24, 2013*

**Math**

HELP: Does THIS LOOK OK SO FAR? NEED HELP WITH THE REST, PLEASE! A 1963 Chevy Bel Air, a classic car today, cost $2400 new in mid-1963. How much would that be in 2012 dollars? Cost 2012 = CPI in 2012 Cost 1963 = CPI in 1963 Cost in 2012 = 232.0 $2,400 30.6 Cost in 2012= $2,400...
*November 24, 2013*

**math**

A 1963 Chevy Bel Air, a classic car today, cost $2400 new in mid-1963. How much would that be in 2012 dollars?
*November 23, 2013*

**math**

Saving for retirement by contributing the same amount each month from your 23rd birthday until your 65th birthday, in an account that pays a steady 4% annual interest compounded monthly. How much will be in your fund at age 65 if you save $100 a month?
*November 23, 2013*

**Math**

A pair of newborn male and female rabbits is placed in an enclosure to breed. The rabbits start to bear young TWO MONTH after their own birth. At the end of each month, they have another male-female pair, which in turn mature and start to bear young ONE MONTH later. None of ...
*November 17, 2013*

**Math**

A pair of newborn male and female rabbits is placed in an enclosure to breed. The rabbits start to bear young ONE MONTH after their own birth. At the end of each month, they have another male-female pair, which in turn mature and start to bear young ONE MONTH later. None of ...
*November 17, 2013*

**Math**

A pair of newborn male and female rabbits is placed in an enclosure to breed. The rabbits start to bear young one month after their own birth. At the end of each month, they have another male-female pair, which in turn mature and start to bear young one month later. None of ...
*November 17, 2013*

**Math**

With these ideas in mind, evaluate—in a paragraph each—the following data depictions. U.S. Federal Budget Policy Outlays by Category for 2015. (U.S. Federal Budget for 2011.) p. 153. This display shows expected expenditures of the federal government in 2015, totaling...
*November 17, 2013*

**math**

If anyone has "For All Practical Purposes" I am stuck on page 680, Writing Project # 2. It is just to long to post.
*November 17, 2013*

**Math**

How can I rewrite this statement for my math class: "The war funding bill...passed this week, but with three times fewer Democrats voting for it than did the last year.
*November 16, 2013*

**Math**

If a dollhouse was made out of the same material as a real house, how would their weights compare?
*November 16, 2013*

**Math**

12''
*November 16, 2013*

**Math**

Dollhouse and the furnishing are built to a scale of exactly 1 in. to 1 ft, what is the linear scaling factor?
*November 16, 2013*

**Math**

Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%? Some people tell me approx. 500% and 405% Which is it and how do you do the math for the correct answer?
*November 15, 2013*

**math**

Please I need help: I need to figure out the procedure to this question: Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%? How do I figure this out? Thank you very...
*November 14, 2013*

**Math**

Steve, Sam or Salah, How do you come up with your answers of 500%, 505 405% Please and Thank you, Tracy
*November 14, 2013*

**Math**

Growth rate of odd size object: Start: 1.5" w by 1.5" l by .25" h End: 3.25" w by 3.50" l by .25" h Did this object increase by 600%?
*November 14, 2013*

**Algebra (Pythagorean Theorem)**

Ahmed has half of a treasure map. which indicates that the treasure is buried in the desert 2x + 6 paces from castle rock. Vanessa has the other half of the map. Her half indicates that to find the treasure one must get to castle rock walk x paces to the north and then walk 2x...
*November 4, 2013*

**Algebra**

Thank you
*November 4, 2013*

**Algebra**

I was not asking if it was a Pythagorean Theorem? This is the equation that I have to solve
*November 4, 2013*