Thursday

December 8, 2016
Total # Posts: 992

**Algebra 2**

Did I solve these problems correctly? 1. f(x)=-3x + 2 g(x)=3x^2 -x + 2 Find (f + g)(x) -3x+2+(3x^2-x+2) =3x^2-3x-x+4 =3x^2-4x-4 2. f(x)=x -1 g(x)=2x^2 -2x -5 Find g(f(x) ) 2x^2 -2x -5(x-1) =2x^2 -2x -5x+5 =2x^2 -7x+5 3. f(x)=3x + 2 g(x)= -2x2 -3x + 5 Find g(f(x) ) -2x^2-3x+5(...

*November 10, 2015*

**Math**

A box with a rectangular base and no top is to be made from a 9 inch by 12 inch piece of cardboard by cutting squares out of the corners and folding up the sides. What size (side-length) squares should be cut out to make the box have as much volume as possible?

*October 29, 2015*

**Physical Science**

Thanks guys

*October 20, 2015*

**Physical Science **

Explain how you can use Boyle's law to determine the new volume of a gas when it's pressure is increased from 270 kPa to 540 kPa? The original volume of gas was 1 l. Assume the temperature and number of particles are consistent. What is the new volume?

*October 20, 2015*

**Math**

-7/15+(-4/5)

*October 8, 2015*

**Socials**

Why did the Canadian government feel the need to control the economy, transportation, and trade after war was declared in 1914? I need help answering this question.

*September 30, 2015*

**Government**

I don't know im just confused how this question relates to government. Which of the following would a political party consider a “quality” candidate for national office? Question 3 options: A) An unknown mayor from Alaska. B) A self-employed computer hacker. C) A...

*September 24, 2015*

**Algebra**

A group of retailers will buy 96 televisions from a wholesaler if the price is $500 and 136 if the price is $450. The wholesaler is willing to supply 84 if the price is $420 and 164 if the price is $510. Assuming the resulting supply and demand functions are linear, find the ...

*September 23, 2015*

**Math**

After a genetics experiment on 67 pea plants, the number of plants having certain characteristics was tallied, with the results given below. Answer parts (a) through (c). 22 were tall 35 had green peas 42 had smooth peas 12 were tall and had green peas 20 had green peas and ...

*September 23, 2015*

**Math **

Will a 2-quart pitcher hold an entire recipe citrus punch -recipe- 2cups orange juice 2cups grapefruit juice 1/4 cup of apricot neater 1/3cup of pineapple juice 4cups ginger ale is the whole recipe 8 2/14 cups?

*September 22, 2015*

**Algebra**

Each ounce of a substance A supplies 2% of the nutrition a patient needs. Substance B supplies 10% of the required nutrition per ounce, and substance C supplies 16% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal...

*September 22, 2015*

**Algebra**

A nurse has two solutions that contain different concentrations of a certain medication. One is a 20% concentration and the other is a 5% concentration. How many cubic centimeters of each should he mix to obtain 10 cc of a 14% solution?

*September 22, 2015*

**algebra**

Bacteria of species A and species B are kept in a single test tube, where they are fed two nutrients. Each day the test tube is supplied with 19,740 units of the first nutrient and 31,990 units of the second nutrient. Each bacterium of species A requires 4 units of the first ...

*September 22, 2015*

**Algebra**

For the period 1995-2002, the total personal expenditures (in billions of dollars) in the United States for food, f(x), and for housing, h(x), can be described by the equations shown below, where x is the number of years past 1995. f(x) = 40.74x + 742.65 and h(x) = 47.93x + ...

*September 22, 2015*

**Algebra**

Each day, a young person should sleep 7 hours plus 1/4 hour for each year that the person is under 18 years of age. Assuming the relation is linear, write the equation relating hours of sleep y and age x.

*September 21, 2015*

**Physics**

Four tanks A, B, C, and D are filled with monatomic ideal gases. For each tank, the mass of an individual atom and the rms speed of the atoms are expressed in terms of m and vmax respectively (see the table). Suppose that m = 3.15 × 10-26 kg, and vrms = 950 m/s. Find the...

*September 1, 2015*

**Physics**

A 96.3-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is μk = 0.619. (a) What is the magnitude of the frictional force? (b) If the player comes to rest after 1.00 s, what is his initial speed?

*August 15, 2015*

**Geometry**

What is the area of a circle if the diameter is 10. Use A = pi*(r^2)

*June 23, 2015*

**Algebra**

My apologies. I guess I didn't word my question properly. The instructor needs us to show our work, so I have to show how I get the starting points on the graph. Here is what I have so far. Maybe you can see where I am going wrong. 18x+3y=12 3y=18x+12 y=-18x+4 This gives ...

*June 20, 2015*

**Algebra**

Using a graph, solve for x and y below. If 6x - 3y = 24 & 18x + 3y = 12 I know to use the forumla y = m*x + b. I also know to assume x=0 so that your starting point is (0,b) with b representing the y axis. M represents slope, which is rise over run. What I am having trouble ...

*June 20, 2015*

**Algebra**

x=5.625 y=4.375 I have been reworking this problem since last night, even using y=10-x, and was still coming up with incorrect answers. Thank you!

*June 20, 2015*

**Algebra**

If 2x + 2y = 20 & 5x - 3y = 15 Solve using the substitution method.

*June 20, 2015*

**Math**

Thank you, Steve. A = 4 and C = 8. I was initially having trouble setting up the equation properly.

*June 20, 2015*

**Math**

A group of adults and kids went to see a movie. Tickets cost $7.00 each for adults and $4.50 each for kids, and the group paid $64.00 in total. There were 4 fewer adults than kids in the group. Find the number of adults and kids.

*June 20, 2015*

**chemistry**

I'm not sure

*June 17, 2015*

**chemistry **

A sample of argon has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 385 K. What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 15.4 atm and 2580C? This problem involves changes in pressure, ...

*May 16, 2015*

**Economics**

Can someone help me make few sentences of a rap regarding Economics. The key words or phrases are econ is a drug, staying all night study,

*May 7, 2015*

**physics**

Consider three charges arranged in a triangle as shown. + - + 0.266 m 0.599 m −3.4 nC 8.1 nC 4.8 nC y x What is the net electric force on the charge at the origin? The value of the Coulomb constant is 8.99 × 109 N · m2 /C 2 . Answer in units of N. 010 (part ...

*May 5, 2015*

**physics**

4. Three point charges, +6.3 µC, +2.3 µC, and −3.4 µC, lie along the x-axis at 0 cm, 2.6 cm, and 5.2 cm, respectively. What is the force exerted on q1 by the other two charges? (To the right is positive.) The Coulomb constant is 8.99 × 109 N &...

*May 5, 2015*

**Math**

1.) What is the formula for the nth term of the arithmetic sequence that has a common difference of 8 and a first term of 4? 2.) What is the formula for the nth term of the geometric sequence that has a first term of 2 and a ratio of 3?

*April 30, 2015*

**Anatomy**

TRUE or False: atrial systole is responsible for "most" of venous return. wouldn't this be false? I was thinking it should say ventricular systole instead, but I'm not sure. Help?

*April 28, 2015*

**Chemistry**

How do you calculate the molality of a salt solution using only temperature? Is it even possible to do so? This was part of an ice cream lab and the temperature of the ice was 1.0 degrees celcius and the temperature of the ice water salt mixture was -0.4 degrees celcius but ...

*April 20, 2015*

**Chemistry**

How does the freezing process of ice cream occur? What happens to ice when salt is added?

*April 19, 2015*

**Chemistry**

1.How many grams of KCl is in 225 mL of a 0.452 M solution? 2.What volume in mL of 0.555 M solution contains 85.0g Na2SO4? 3.How many grams of CaCl2 would be dissolved in 2.0L of a 0.10 M solution of CaCl2? Can you please show me how to do these problems?

*April 14, 2015*

**Calc. **

The upper right-hand corner of a piece of paper, 12 in. by 8 in., as in the figure, is folded over to the bottom edge. How would you fold it so as to minimize the length of the fold? In other words, how would you choose x to minimize y?

*March 30, 2015*

**History**

Even though I asked this before, can you please help me with this and yes it's a crossword puzzle. My teacher gave us clues that don't really help at all and I've looked back in my textbook but I can't find the words for each clue. 1.Equality of Sexes 7 letters...

*March 29, 2015*

**History **

1. Equality of sexes ; 7 letters 2. To bring slavery into politics 12 letters 3. Unionism with politics; 16 letters 4.Put in here if you could not pay your debts ; 11 letters 5. Considered all men to be married to all women; 6 letters

*March 26, 2015*

**Physics - Electric Fields **

Could someone please explain electric potential energy? Note: The question itself is not on my homework, but I'm having trouble understanding the theory behind my homework.

*March 23, 2015*

**language arts**

Is 1 B? And is 3 C? I thought it out a bit more. -Jamie Lee

*March 18, 2015*

**language arts**

1. in diary of anne frank, act 1, what causes the franks and the van daans to move into the rooms on the top floor of the ware house? A. Their own homes have been desroyed by bombs. ***** B. They are hiding from the Nazis, who have been persecuting Jews. C. The warehouse has ...

*March 18, 2015*

**Statistics**

What do SEM (standard error of the mean) error bars tell you? How would you describe them in a figure caption for a graph? I know what regular error bars are, but I can't find any information on SEM error bars!

*March 17, 2015*

**Health**

Yerp C would be correct

*March 17, 2015*

**health. please help! #6**

Your immune system uses your white blood cells to fight off infections(And sometimes yourself if it goes wrong) So C is the right answer

*March 13, 2015*

**Health**

I believe 1 is right. 2: is d 3: is c

*March 13, 2015*

**Health Information Technology**

Or you could ask your doctor for suggestions or even see if they think your completed thing looks ok

*March 12, 2015*

**Health**

Screening should be the answer

*March 3, 2015*

**Vectors Math**

I was given this info r=1.5 m d=3 m F= 50 N angle= 110 degrees 1. What torque is APPLIED ? T=Fsin T= (1.5)(50)sin(110) T=70 N m 2. At what angle would enough force be applied to achieve maximum toque? T=Fsin T= (1.5)(50)sin(10) T=13.0 N m 3. If someone continues to push with a...

*February 28, 2015*

**Computers**

I believe it is B.

*February 20, 2015*

**Algebra 2**

The length of a rectangular window is 5 feet more than its width, w. The area of the window is 36 square feet. Write an equation to represent the area of the window. Please have your final equation equal to zero.

*February 20, 2015*

**Health**

its B

*February 19, 2015*

**Health**

D is actually the answer for both questions

*February 18, 2015*

**chemistry**

describe the predominant forces that exist between molecules of the noble gases. Arrange the noble gases in a predicted order of increasing boiling point (lowest first) and explain the reason for the order

*February 16, 2015*

**health**

Numerous is correct

*February 11, 2015*

**english**

I would guess its A as the other options are opinions

*February 10, 2015*

**chem**

2 HNO3 + 1 Na2S -> H2S + 2 NaNO3 How many moles of H2S would we expect to be formed by reaction if 3.50 moles of HNO3 reacted completely?

*February 10, 2015*

**algebra**

Write the equation of the line, in standard form, that passes through the origin and is parallel to x + y = 6. Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution.

*February 6, 2015*

**science**

Which statement is true regarding nuclear energy? (Points : 1) Nuclear power produces no greenhouse gasses and thus poses no environmental threats. Nuclear plants rely on a massive industrial infrastructure using fossil fuels. Due to strict safety regulations, nuclear power ...

*February 2, 2015*

**HEALTH**

Platelet cells, which are part of our blood. They are not red or white cells though they are their own cell.

*January 26, 2015*

**Health**

Perhaps they have metal disorders. Or are elderly and in need of supervision

*January 24, 2015*

**Health**

Scenarios that requires a patient to be a person assist instead of one person during patient care and why? I already have someone paralyzed and that is badly injured? What are some more?

*January 24, 2015*

**Algebra**

Your class hopes to collect at least 325 cans of food for the annual food drive. There were 135 cans donated the first week and 89 more the second week. a. Write an equality that describes the situation. Let c represent the number of cans of food that must be collected by the ...

*January 22, 2015*

**Math**

you must cover the entire bathroom floor with tiles. each tile measures 1 ft. x 1 ft. You will need an extra 5% of tiles to account for waste. How many tiles will you need to purchase for the project? The floor measures 5ft. x 7ft.

*January 16, 2015*

**Theory of knowledge**

Thank you so much :)))

*January 14, 2015*

**Theory of knowledge**

The death penalty Lets say someone says that the death penalty killed over 3000 people but only 3 of them were innocent and they provide examples and evidence, and say that it toke away the lives of people who commited crime so it should be favored. How can i backfire this? ...

*January 14, 2015*

**Foreign Language**

The directions say to translate the sentence in Spanish and then rewrite it using Indirect or Direct Object Pronouns. Are my answers correct? 1.) She bought the house for us. My answer: Ella compró la casa para nosotros. 2.) She needs to walk the dog for us. My answer: ...

*January 9, 2015*

**Quick english help**

To answer your question, I would say no. And the reason why is because if it's included in the sentence, then it can be lowercase. If it's at the beginning, capitalize it. Hoped that helped! :)

*January 9, 2015*

**CAL **

Consider the function y = 3x^5 – 25x^3 + 60x + 1 Use the first or second derivative test to test the critical points. How many relative maxima did you find? I got this as the derivative; 15 (4-5 x^2+x^4) And I got 4 relative maxima.

*January 9, 2015*

**Medical billing/coding**

This 51 year old male is Type 1 insulin-dependent diabetic admitted for treatment of a grade III food ulcer which involved necrosis of the muscle on the left foot with gangrenous changes resulting from diabetic neuropathy, atherosclerosis, and chronic peripheral vascular ...

*December 30, 2014*

**american national governement**

The basis for national power lies in... A.) The interstate commerce clause only B.) The supremacy clause andnthebtreaty clause only C.) The trwaty clause and the interstate clause only D.) The interstate commerce, supremacy, and treaty clauses

*December 15, 2014*

**physics**

What happens to the diffraction pattern when you have a small wavelength and large slit width in single slit interference? Say you have a light of 700nm shining through a diffraction grating with the separation of slits being 450nm. What pattern would you see? The answer is ...

*December 14, 2014*

**Problem Solving: Make a Table**

Eileen likes to keep scrapbooks. She already has 4 scrapbooks filled with 40 pages each. If she fills 5 pages every month, how many months will it take her to fill up 2 more 40-page scrapbooks?

*December 11, 2014*

**Math**

Jack says that once you have a common denominator you are ready to subtract two mixed numbers. What other step might be necessary before you can subtract? Give an example.

*December 9, 2014*

**Health**

yep its d

*December 9, 2014*

**Math**

A bottle rocket travels along a parabolic path and reaches a maximum height of 21 feet after traveling a horizontal distance of 7 feet. A) Write a quadratic function of the form y=a(x-h)^2 +k that models the bottle rocket's path, assuming it leaves the ground at the point...

*December 7, 2014*

**math**

Rodrigo and Mel are completing in a track meet. The table at the right shows the results of their events. Rodrigo claims his best jump was about 1 ft longer than Mel's best jump. Is he correct?

*December 6, 2014*

**math**

Rodrigo claims his best jump was about 1 ft longer than Mel's best jump. Is he correct?

*December 6, 2014*

**Health**

Its C

*December 5, 2014*

**eng**

what is the meaning of : to wat extent do we feel that we're being guided by the universe

*December 4, 2014*

**solving exponential functions**

yeahh sorry & thank you :)

*December 3, 2014*

**solving exponential functions**

solve: 2^7-x = 1/2 *show all steps please !

*December 3, 2014*

**Health**

It was less then 20% Couldn't find the answer in this mess of a test, its like they forgot to add a page

*December 2, 2014*

**physics**

A 35kg lawnmower starts from rest. Its pushed with a force of 127N at an angle 40 degrees below horizontal. After 12s it reaches speed of 0.37m/s. Find acceleration and force of friction. Attempts: Well I figured out Fnormal=343 my multiplying mass by gravity and assuming as ...

*November 30, 2014*

**math**

Kendra has a painting canvas that is 27 inches wide by 33 inches high. She painted a red rose, which covered 40% of the canvas. What was the area of the canvas which was covered by the red rose?

*November 30, 2014*

**health**

its b

*November 27, 2014*

**easy math **

-5.4 ÷ 0.9 = -6.0 < --- ? this one or -0.6 0.6 6.0

*November 25, 2014*

**MTH LIBERAL ARTS**

Evaluate the expression. Determine the number of combinations of 7 things taken 4 at a time. & Mark can remember only the first 4 digits of his friend's phone number. He also knows that the number has 7 digits and that the last digit is not a 0. If Mark were to dial all of...

*November 23, 2014*

**Math liberal Arts**

Perfect that is what I got

*November 19, 2014*

**Math liberal Arts**

A bag contains 5 red marbles, 4 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability that it is not blue?

*November 19, 2014*

**EDTECH**

hey do you know the answers for this thank you

*November 13, 2014*

**Health**

Its strokes as they are the only Neurological affect

*November 11, 2014*

**Health**

its b. "Aspects of personality/temperament and certain behaviors that are evident early in life—often before children enter elementary school—such as antisocial behavior,"

*November 6, 2014*

**worl geography**

C. federal republics

*November 2, 2014*

**worl geography**

The governments of Norway, Sweden, the Netherlands, and the United Kingdom are all examples of __________. A. federations B. pure democracies C. federal republics D. constitutional monarchies

*November 2, 2014*

**Math**

how do I find out how to list 7/10, 5/8, and 3/7 from greatest to least

*October 29, 2014*

**Chemistry**

What volume of 0.170 M K3PO4(aq) must be added to 50.3 mL of 0.103 M K2HPO4(aq) to prepare a buffer solution with a pH of 12.09?

*October 21, 2014*

**Physics**

Spiderman is standing on the edge of a rooftop 100m above a swimming pool. He decides to jump in to cool off, so he springs out at a velocity of 30 m/s at an angle of 35 degrees above the horizontal. The near edge pool is located 127 m from the base of the building. It is a ...

*October 13, 2014*

**Chemistry**

1.07e-4

*October 12, 2014*

**psychology**

The the psychological perspective of empiricism (the belief that your knowledge of the world is based on careful observation and not common sense or observation) fall relate more to the concept of "nature" or "nurture"? I'm currently leaning more ...

*October 7, 2014*

**psychology**

The the psychological perspective of empiricism (the belief that your knowledge of the world is based on careful observation and not common sense or observation) fall relate more to the concept of "nature" or "nurture"? I'm currently leaning more ...

*October 7, 2014*

**Basic Chemical Engineering**

Uh..i have done this research before, and sincerely it is not of great help to me. If there is any other link showing step by step the different procedures in the dyeing process, that u could give me, it would be great sir!

*October 5, 2014*