Tuesday
December 6, 2016

Posts by Liz

Total # Posts: 1,296

statistics
A music industry researcher wants to estimate, with a 90% confidence level, the proportion of young urban people (ages 21 to 35 years) who go to at least 3 concerts a year. Previous studies show that 21% of those people (21 to 35 year olds) interviewed go to at least 3 ...
November 13, 2016

Math
The triangle in the trapezoid share a 15 inch base and a height of 10 inches. The area of the trapezoid is less than twice the area of the triangle. Find the values of X. X is greater than --- and x is less than 15 inches.
November 11, 2016

lang. arts
What is a catchy title for an essay about greed?
November 8, 2016

Calc One
44 gord with the top part
November 6, 2016

Calc One
The function C(m) = -.41m^2 + 6.7m - 44/ .7m represents Miles Traveled per lb. of CO 2 released as a function of speed(in MPH) for a hyundai Sontana. the domain of this function is [10,90]. A) calculate C'(m) B)find the critical points of C(m). C)Where does C(m) have ...
November 6, 2016

algebra
if sin alpha is 0.28° where 0° is less than or equal to alpha less than or equal to 90°, evaluate cos alpha, tan alpha, sec alpha, cosec alpha and cot alpha. please help, it's urgent.
October 26, 2016

Chemistry
The compound copper(II) nitrate is a strong electrolyte. Write the reaction when solid copper(II) nitrate is put into water:
October 21, 2016

social studies
You need this passage. "A piece of coastal land, and the surrounding fishing areas, has been occupied by a fishing society for centuries. This society does not have a government, or acknowledge that any larger government rules over them.
October 5, 2016

math
uncle gives baby 25 dollars on her first birthday, 50dollars on second doubling act each year. I need help with an equation
October 1, 2016

chemistry
A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 252 torr . Pure pentane and hexane have vapor pressures of 425 torr and 151 torr, respectively, at room temperature. What is the mole fraction of hexane? (Assume ideal...
September 24, 2016

english
Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4. Netta and Jim refused to discuss the issue of free trade. 16. In these four sentences, the word that&#...
September 21, 2016

Math
Compare the values of each of the digits 337 The 3 in the tens place is ---------the value of the 3 in the hundreds place.
September 19, 2016

math
A point P is 500m from the base of a pole. If the angle of elevation of the top of the pole to the point P is 40 degrees, find the height of the pole
August 30, 2016

Chemistry
2.42
July 17, 2016

Maths - Year 10 - Simult. Equations
50x + 20y = 310 x + y = 11 multiply bottom equation by 20 50x + 20y = 310 20x + 20y = 220 substitute into 1st equation via elimination 30x = 90 x = 90 ÷ 30 x = 3 solve for y 3 + y = 11 y = 11 - 3 y = 8 Answer: 3 50c pieces and 8 20c pieces
June 3, 2016

Pre-Calculus
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x - y + 3z = 12 x + 4y + 6z = -32 5x + 3y + 9z = 20 Please help me..
June 2, 2016

Pre-Calculus
That is exactly what I had for my answer but I was confused that I had an answer of 2 solutions.
June 2, 2016

Pre-Calculus
Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0 I solved the problem but I got it wrong for some reason..can you solve it step by step?
June 2, 2016

Pre-Calculus
Locate the foci of the ellipse. Show your work. x^2/36+y^2/11=1 c^2=a^2-b^2 c^2=36-11 c^2=25 c= ± sqrt25 c= ±sqrt5*5 is this correct?
June 2, 2016

Pre-Calculus
Find the vertical asymptotes, if any, of the graph of the rational function. Show your work. f(x) = (x-4)/(x(x-4)) (x-4)/x(x-4) the common factors cancel out and all is left is f(x)= 1/x... how do I solve this problem?
June 1, 2016

History
I think its b or c
May 28, 2016

History
Which factor contributed most to Florida becoming a U.S. territory? a. the outcome of the Seminole Wars b. the weakening of Spain's hold over its colonial possessions c. the desire of Southern politicians to expand slavery into new territories d. the development of the ...
May 28, 2016

Pre-Calc
Find the vertical asymptotes, if any, of the graph of the rational function. Show your work. f(x) = (x-4)/(x(x-4)) How would I show my work? the x-4 cancel out and I am left with 1/x. The vertical asymp. is x= 0
May 24, 2016

Pre-Calc
For the data set shown by the table, a. Create a scatter plot for the data. (You do not need to submit the scatter plot) b. Use the scatter plot to determine whether an exponential function or a logarithmic function is the best choice for modeling the data. Number of Homes ...
May 24, 2016

Pre-Calc
thank you!
May 24, 2016

Pre-Calc
Verify the identity. Show your work. cot2x + csc2x = 2csc2x - 1 1+cosec^2x +cosec^2x Cot^2x+cosec^x= 1+2 cosec^2x Would this be correct?
May 24, 2016

Math
Solve the equation on the interval [0, 2π). tan2x sin x = tan2x would it be 0, pi/2 ?
May 23, 2016

Math
Solve the equation on the interval [0, 2π). cos x + 2 cos x sin x = 0 would the answer be 7pi/6 , 11pi/6 ?
May 23, 2016

Math
The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by pH = -logx where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the ...
May 23, 2016

Math
yup!
May 18, 2016

Math
In the formula d=rt d represents distance in miles, r represents average speed in miles per hour, and t represents time in hours.What is an automobiles average speed if it travels 60 in 1 1/2 hours?
April 27, 2016

maths
ken has 4 times as much money as Jake. if Jake gave Ken £360 he would still have more money than Ken. whats the least money Ken will have?
April 14, 2016

Math
A car dealer makes a 12% commission on every car sold. If the dealer sells a car for $10,000, how much does he make in commission?
April 13, 2016

Math
If 100 students are surveyed, about how many students own 2 or more pets? Explain please 0 pets __________ 1/20 1 pet __________ 1/2 2 0r more _______ 9/20 Thank you very much
March 23, 2016

Biology
How do I set up a trihybrid punnett square if the cross is TTRRPp x TtRrPp?
March 12, 2016

History Help???
I believe the answer is D
March 9, 2016

cHEMISTRY
What mass of AgCl(143.32g/mol) is formed from the reaction of a 0.109 M MgCl2 solution with excess AgC2H3O2?
February 29, 2016

Math
The total income amount is about 983 because 59 is 6% of 983.
February 28, 2016

Geometry
How would one solve similar right triangles if the first triangle has y and x as legs and a (altitude) as hypotenuse, and the second triangle has one leg of 50, the other is a, and the hypotenuse is 100. I solved for a, and it came out to be 86.6? Is this correct? How do I ...
February 8, 2016

Calculus
x=0, pi/3, 5pi/3
January 20, 2016

Algebra
The sum of measures of angle X and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y, what is the measure of angle X?
January 20, 2016

Math
got it thank you
November 28, 2015

Math
inverse laplace transform of {5/(s-4)^3}
November 28, 2015

spanish
Alyssa, did you ever figure it out? I don't see it in the lesson.
November 14, 2015

business calc.
The management of Ditton Industries has determined that the daily marginal revenue function associated with selling x units of their deluxe toaster ovens is given by the following where R '(x) is measured in dollars/unit. Rtext( )'\(x\) = -0.1x + 40 (a) Find the daily ...
November 13, 2015

health information law and ethics
Advance directives are defined by your readings as written instructions recognized under state law, such as living wills or durable powers of attorney for health care, that relate to the kind of health care the patient wishes to have or not have when incapacitated. Also know ...
November 6, 2015

Math
Lindsay has 10 inches of ribbon. She buys another three lengths of ribbon, each 5 inches long. How much ribbon does she have now?
November 3, 2015

Chemistry
wow, okay. Thank you!
November 2, 2015

Chemistry
Determine the number of grams of water in 7.00 g of copper(II) sulfate pentahydrate.
November 2, 2015

Chemistry
An experiment requires 0.34 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.34 M base?
November 1, 2015

Math
Working together two people can cut a lawn of grass in 5 hours. One person can do the job alone in 1 hour less than the other. How long would it take the faster person to do the job?
October 8, 2015

AP Statisics
Joe scores 1770 on the SAT. Assuming that both tests measure the same thing, what score on the ACT is equivalent to Jose's SAT score? Explain.
October 2, 2015

chemistry
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 g of carbon were burned in the presence of 55.2 g of oxygen, 16.8 g of oxygen remained unreacted. What mass of carbon dioxide was produced?
September 27, 2015

Math
193.75 miles
September 23, 2015

public speaking
when deciding on the topic, it is important to consider
September 16, 2015

Chem
Lead Silicon Iodine
September 10, 2015

Math
Describe a real-world problem that can be solved using the expression 29 divided by (3/8 + 5/6). Find the answer in the context of the situation. I know the answer is 24, however I cannot think of an expression to go along with this.
September 10, 2015

Math
Amy is building a house. The basement floor is at -15 feet. The roof of the house is above the ground 25 feet. Express the comparison of heights as an inequality. Explain the meaning of the inequality.
September 2, 2015

Math
Amy is building a house. The basement floor is at -15 feet. The roof of the house is above the ground 25 feet. Express the comparison of heights as an inequality. Explain the meaning of the inequality.
September 2, 2015

Physics
What will be the unit?
August 29, 2015

Physics
A force of 64 N is applied on a body producing an acceleration of 2.4 m/s^2. What is the mass of a body?
August 29, 2015

Math
Decompose 28*6 to make it easier below. Paula had a block of cream cheese that was 2 inches wide, 5 1/2 long and 1 1/2 inches tall. Paula used 1/2 of the cream cheese in her recipe. How many cubic inches of cream cheese did she use?
August 23, 2015

math
Which symbol is used to make -6? |-8| a true statement? A. > B. < C. = Is the answer B? Thank you
August 21, 2015

Math
Oops sorry thank you.😊
August 21, 2015

Math
Which set of integers are in the right order from least to greatest? A. -8,8,6,|-7|,5 B. |-7|,-8,8,6,5 C. -8,5,6,|-7|,8 D. 5,6,8,-8,|-7| Is the answer b? Thank you
August 21, 2015

Chemistry
Calculate the pH of a potassium phosphate buffer if the pKa of KH2PO4 is 7.2 and the acid-base ratio is 2:1 I took Chemistry 7 years ago and am in a review for a Biochem course I am takin. I do not remember the basics so any help with how to get started or what equations to ...
August 18, 2015

Algebra
I have a problem that reads as: -4x-2y=12 4x+8y=-24 And when solved the answer is (2,-2), but I checked the answer in the back and it says (6,-6) How does that WORK??
August 18, 2015

Social studies.
Thank you
August 18, 2015

Social studies.
The earliest type of trade was A. Bartering B. Currency C. Economies D. Cowry shell currency Is the answer A? Thank you
August 18, 2015

Language Arts
Identify the antecedent for the underlined pronoun in the sentence below. The boy was excited about his date with Sheila, but he didn't know how (it) would turn out. It is underlined A. boy B. date C. Sheila Is the answer B? Thank you
August 18, 2015

Math
What is the 11th term of the following geometric sequence? Enter a whole number 7/9,-7/3,7,-21,63
August 1, 2015

stats
1)Suppose that the weight of tomato juice in mechanically filled cans follows a normal distribution with a mean of 464 grams and a standard deviation of 8 grams. a)A random sample of size n = 18 cans is taken. Will the sampling distribution of the sample mean weight be normal...
June 28, 2015

philosophy
What is the notion “good” mean for Kant? How does this lead him to the categorical imperative (provide and fully explain at least two formulations)? Provide example(s) of your own regarding how one might use the categorical imperative to determine a course of action...
June 20, 2015

philosophy
How are values established according to Hume? What human characteristics does he privilege in determining a value system and how do they inform our morality? How are they related to “Utility” and “Justice”? Are you convinced by his characterization of ...
June 20, 2015

math plz help quick
Here are the answers Combinations Quiz For conexus: 1.C 2.A 3.C 4.D 5.D 6.B 7.D 8.B 9.C If you want show get some wrong on purpose so you teacher won't get suspicious. :)
May 21, 2015

chemistry
How much heat energy, in kilojoules, is required to convert 37.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?
May 9, 2015

physics
Bill has a mass of 66.9 kg. Jane has a mass of 58.8 kg. If they are seated 2.2 m apart, how much gravitational force attracts them?
May 3, 2015

chemistry
Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 ∘C, the total pressure in the container is 4.50atm . Calculate the partial pressure of each gas in the container. Express...
May 1, 2015

algebra NEED HELP
I've tried to do these problems multiple times and I'm just so confused. 1. (root x-5) + 5 = 0 2. (root 2-7x) = 2x Thanks!
April 29, 2015

Math
Ana had some money. she used 4/7 to buy shoes which cost $96. if she spent another 2/7 to buy a dress how much would she spend altogether?
April 22, 2015

physics
Choose one of the Laws of Thermodynamics (zeroth, first, second, or third) and give a brief summary of its development. Who is credited with "discovering" it and when? How did the four laws come to be ordered as they are? Please explain in detail
April 14, 2015

physics
pls someone should solve dis
April 12, 2015

science
what is electrical deduction?
March 24, 2015

physics
At the beginning of a new school term, a student moves a box of books by attaching a rope to the box and pulling with a force of F = 88.9 N at an angle of 56◦ , as shown in the figure. The acceleration of gravity is 9.8 m/s 2 . The box of books has a mass of 17 kg and ...
March 15, 2015

trig
a balloon is tethered to the ground by a string 5 m long if the string makes an angle of 65 degrees with the ground how high above the ground is the balloon
March 13, 2015

Chemistry
Assuming that the lab procedure was conducted in an identical manner in all other respects, if a large quantity of vinegar had been taken initially for analysis, for example, a 50.0 ml instead of 25.0mL discuss briefly how each of the following would change. A. the moles of ...
March 13, 2015

Chemistry
I did a lab on vinegar and titration. The question asks.. In the titration of acetic acid and NaOH the use of the color indicator mandates that excess base be present to detect the reading endpoint. Will this cause the calculated and reported mass percent of acetic acid in ...
March 13, 2015

periodic functions(math)
Is there somewhere a person can see the answer?
March 12, 2015

Science (Chemistry)
What is the "E2" at the end of your answer? @DrBob222
March 9, 2015

Science
ok what is the correct answer I am freaking out
February 18, 2015

Physics
Well, I just found out that I failed my physics midterm. I got a 51. Yes I studied but I still don't get the forces and inclined planes. And my parents are going to kill me if they find out. The midterm brought down my grade to a 79!! Any advice? P.S I also got a 71 on my ...
January 28, 2015

College Algebra
Suppose that $6,400 is invested at 0.5% interest, compounded monthly. How much, to the nearest penny, is in the account after 7 years?
January 23, 2015

Chemistry
I have two questions that I do not know how to answer. Thanks for your help! 1. Calculate the [OH^-], [H^+], pH, and pOH for a 0.50M solution of CN^- 2. Calculate the molar solubility of PbCl2 in 0.40M KCl
January 11, 2015

Chemistry
How would you determine if a given compound is acidic, basic or neutral? Also if given a compound, how would you determine if the state is aqueous (without a chart)?
January 4, 2015

algebra
5 square root of 145
December 16, 2014

Physics
A block of mass m is pulled across a level surface by a rope that makes an angle θ with the horizontal. The coefficient of friction is μ. (a) Determine the amount of force F required to slide the block at a constant velocity. (b) Determine the optimum angle at which ...
December 3, 2014

physics
A man pushes 100.0 N on the handle of a 40.0 kg lawnmower. The applied force is in the same direction as the handle, which is tilted 35.0° relative to horizontal. The coefficient of kinetic friction is 0.10. Find the amount of acceleration.
December 3, 2014

physics
You create a plot of T2 (in s2) vs mass (in kg) and the linear fit of your graph gives a slope of 0.12735 ± 0.01234. What is the value of the spring constant you took the data with? i am not sure what to do. i know the k=1/slope but im not sure how to start to solve ...
December 1, 2014

Chemistry
Hi Chris, I believe I am in your Intro Chem class at Alfred State. To do this problem, all you have to do is substitute the equation C(s) V(s)= C(d) V(d)... C stands for the moles (concentration) and the V stands for the mL (volume) if you plug the numbers into the equation...
November 29, 2014

math
A tank holds 15 litres of water.A cup holds 3/10 of a litre. How many cups of water does the tank hold
November 18, 2014

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