Saturday

December 10, 2016
Total # Posts: 494

**Physics**

A shopper exerts a force on a cart of 64N at an angle of 30° below the horizontal. a.) How much force pushes the cart in a forward direction? b.) How much force pushes the cart against the floor?

*December 9, 2016*

**Physics**

An ice skater with a mass of 60.0kg is moving at 20.0 m/s coasts to a halt in 2.00×10^2m on a smooth ice surface. What is the coefficient of friction between the ice and the skates?

*December 9, 2016*

**Algebra **

Divide by synthetic division (x^4-15x^2 +38x-60)/(x-3) Can someone please help with this.

*December 1, 2016*

**Math-PreCalc**

Find the sum u+v. |u|=47, |v|=30, ?=90° The magnitude of the resultant vector is _____.(Round to the nearest tenth). Find the angle that the resultant makes with u. The angle is ____°. (Round to the nearest degree).

*November 3, 2016*

**Math**

3/4 of the students in a school were girls and the rest were boys. 2/3 of the girls and 1/2 of the boys attended the school carnival. How many students attended the carnival of 330 did attend.

*November 1, 2016*

**Marco Eco**

Suppose you borrow $100 of principal that must be repaid at the end of two years, along with interest of 4 percent per year. If the annual inflation rate turns out to be 8 percent, (a) What is the real rate of interest on the loan? (b) What is the real value of the principal ...

*October 17, 2016*

**Marbles**

A bag contains 10 green marbles, 9 white marbles, 7 red marbles. If one marble is drawn from the bag then replaced, what is the probability of drawing a green marble then a red marble?

*October 8, 2016*

**algebra**

An open box is to be constructed from a rectangular sheet of tin 5 meters wide by cutting 1 square meter from each corner and folding up the sides. The volume of the box is to be 18 cubic meters. What is the length of the tin rectangle?

*September 25, 2016*

**math**

3x = x +48 subject the x to the other side. 2x = 48 divide by 2 to both sides. x = 24.

*September 25, 2016*

**Science**

An empty 1.5 litre Pepsi bottle is filled with uncooked rice. A marble is put into the bottle and a pencil used to push it down until it is buried in the rice. The bottle is capped and shook hard back and forth. The bottle is then placed on the table. What do you observe?

*September 12, 2016*

**Math**

You bought a new car for $26,500 in 2005, and the value of the car depreciates by $900 each year. Find a formula for V, the value of the car, in terms of t, the number of years since 2005.

*September 9, 2016*

**math**

Maria spent 2/5 of her money on a book and 1/6 of the remainder on a P.E. uniform. If the book costs P105 more than the P.E. uniform, how much money did she have at first?

*August 12, 2016*

**math**

if 20 students are present out of 50 studentsin class. how many percent of absent?

*July 3, 2016*

**health**

yes thank you

*May 2, 2016*

**health**

how did you know

*May 2, 2016*

**health**

and my brother said this was a good site

*May 2, 2016*

**health**

i`ll go to a different site

*May 2, 2016*

**health**

without this system in the body you would get really sick because toxins and waste would build up. 1. cardiovascular 2. excretory 3.integumentary 4. muscular

*May 2, 2016*

**math**

can you help me with this .

*April 5, 2016*

**math**

Blair opens his investment account with $500. He loses $15.45 the first month, and then gains $35.68 the second month. If his net gain after 3 months is $40, how much money did he gain in the 3rd month? *

*April 5, 2016*

**math**

9 yar

*April 5, 2016*

**math**

What is the net gain or loss in yardage for a football team that gains 6 yards, loses 12 yards and then gains back 15 yards?

*April 5, 2016*

**civics **

how did the new jersey plan contribute to the creation of the us constitutions? a-it called for equal representation for all states b-it called for the 3/5 compromise c-it called for the creation of a bicameral congress d-it called for the end of slave trade

*March 22, 2016*

**math**

a plane intersects a square pyramid perpendicular to its base but not through a vertex.The plane forms a cross section what is the shape of the cross section a)trapezoid b)triangle c)square d)rectangle

*March 9, 2016*

**trig**

half angle formula to find exact value cos 112.5 degree

*March 8, 2016*

**trig**

sin^4x

*March 8, 2016*

**trig**

sin 2x-cot x=

*March 8, 2016*

**Math**

to determine the number of trout in a lake a conservationist catches 144 trout, tags them and throws them back into the lake. later 28 trout are caught; 14 of them are tagged. how many trout would the conservationist expect to be in the lake?

*March 7, 2016*

**math**

1.b 2.c 3.b 4.d

*February 19, 2016*

**Physics**

Suppose that 4.7 moles of a monatomic ideal gas (atomic mass = 8.5 × 10^-27 kg) are heated from 300K to 500K at a constant volume of 0.47 m^3. It may help you to recall that CVCV = 12.47 J/K/mole and CPCP = 20.79 J/K/mole for a monatomic ideal gas, and that the number of...

*February 9, 2016*

**Physics**

A tank holds 135 moles of argon gas (atomic mass = 6.633521 × 10^-26 kg) at a pressure of 101300 Pa and a temperature of 302K. Recall that the number of gas molecules is equal to Avagadros number (6.022 × 10^23) times the number of moles of the gas 1) What is the ...

*February 9, 2016*

**Physics**

A cylinder with a movable piston contains 14 moles of a monatomic ideal gas at a pressure of 2.26 × 105 Pa. The gas is initially at a temperature of 300 K. An electric heater adds 52600 J of energy into the gas while the piston moves in such a way that the pressure ...

*February 9, 2016*

**Analytical Chem**

Do you know what chemical equilibrium is responsible for this effect?

*February 9, 2016*

**Math**

yes

*February 7, 2016*

**Economics**

That link doesn't take me to concrete information to justify an answers based off my question.

*January 25, 2016*

**Economics**

I don't know. Can you help me understand that more.

*January 25, 2016*

**Economics**

Do you think a nation’s output should be distributed according to income or according to some other standard (such as basic human need)?

*January 25, 2016*

**Math**

A cake recipe calls for 2 cups of flour. You want to make 2/5 of the recipe. How many cups of flour should you use?

*January 24, 2016*

**science**

would it be synthesis?

*January 9, 2016*

**science**

An equation has carbon dioxide and water as its products, what type of reaction has taken place?

*January 9, 2016*

**apex geometry**

eat 12 apple at any given time

*January 8, 2016*

**science**

what are three of the populations in an ecosystem near you

*December 17, 2015*

**Math**

A person has $50,000 to invest. As the person's financial consultant, you recommend that the money be invested in Treasury bills that yield 4%. Treasury bonds that yield 8%, and corporate bonds that yield 12%. The person wants to have an annual income of $3960, and the ...

*December 9, 2015*

**Calculus AB**

If f(x) is continuous on the interval [4, 7], how many of the following statements are true? A. f(x) has a maximum value on [4, 7]. B. f(x) has a minimum value on [4, 7]. C. f(7) > f(4) D. lim f(x) = f(6) ᵡ¨6

*December 8, 2015*

**Finance**

Currently you own a portfolio comprised of the following three securities. How much of the riskiest security should you sell and replace with risk-free securities if you want your portfolio beta to equal 90 percent of the market beta? Stock Value/Beta A 16,400/1.06 B 20,500/1....

*December 7, 2015*

**Finance**

Currently you own a portfolio comprised of the following three securities. How much of the riskiest security should you sell and replace with risk-free securities if you want your portfolio beta to equal 90 percent of the market beta? Stock Value/Beta A 16,400/1.06 B 20,500/1....

*December 6, 2015*

**Chemistry**

A chemist prepared a solution by dissolving 52.0 g of hydrated sodium carbonate in water to a total volume of 5.00 dm3. The concentration was determined to be 0.0366 M. Determine the formula of the hydrated sodium carbonate.

*November 18, 2015*

**Feedom Similes **

I cant think of any similies about freedom can you give me some ideas

*November 11, 2015*

**low math**

A section of a boardwalk is made using 15 boards. Each board is 9 1/4 inches wide. The total width of the section is 144 inches. The spacing between each board is equal. What is the width of the spacing between each board? Write your answer in simplest form.

*November 4, 2015*

**Math**

idk

*October 29, 2015*

**Math word problem**

Just so that I understand, the answer should be a positive 6.17 and not negative 6.17 correct.

*October 26, 2015*

**Math word problem**

Hi Rainy, I don't have to do a number, it was just a word problem we had to just solve it. So can I use the same equations you gave?

*October 26, 2015*

**Math word problem**

Please, i need help. How much greater than -11.6 is -5.43

*October 26, 2015*

**Louisiana History**

Yep, its B, C and A, good job MIW!

*October 6, 2015*

**Math**

What is the greatest six digit even number that matches all of the clues The ten thousands digit is twice the tens digit The hundred thousands digit is more than six The thousands digit can be divided by the ones digit No digit is used more than once

*September 28, 2015*

**math**

I need help with this problem: 33 1/3 of what number is 4 5/6

*September 27, 2015*

**Social Studies**

idk

*September 9, 2015*

**math**

divide

*August 30, 2015*

**math**

how to do -48= 2q and 13 n/10

*August 30, 2015*

**Mathematics**

Mrs. Sheela purchased a sewing machine and made a down payment of Rs.1000. She agreed to pay Rs .60 per month thereafter for one year. If the interest Raye was 7% compounded monthly, what was the cash price of the machine?

*August 16, 2015*

**math**

line of symmetry

*May 5, 2015*

**physics**

a block weighs 200 N and is being held against a door. The coefficient of static friction between the door and the block is 0.470. What is the minimum force applied? Please show how you got it

*April 19, 2015*

**Calculus**

Correct answer is -.169

*April 6, 2015*

**math**

$1000-$800=$200 $200/$800=1/4 or 25% profit

*April 3, 2015*

**chemistry**

A 50.0 mL sample of 0.50 M HBr is titrated with 0.25 M KOH. What is the pH after the addition of 60.0 mL of KOH? A) 4.1 B) 13.4 C) 1.7 D) 2.0 E) 7.7 I'm confused on the process of solving this problem. My work so far: .050L X .50 mol/1L= .025 mol HBR .060L X .25 mol/1L= ....

*April 3, 2015*

**Math**

90 sq meters

*March 11, 2015*

**Chemistry**

A volume of 80.0mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.20 ∘C , what is the mass of the steel bar? Use the following values: specific heat of ...

*February 25, 2015*

**Math**

A drawer contains 20 black socks and 20 white socks. If the light is off and you reach into the draw to get your socks, what is the minimum number of socks you must pull out in order to be sure that you have a matching pair?

*February 15, 2015*

**science**

by way of negative feedback and homeostasis

*February 5, 2015*

**math**

I don't know

*February 3, 2015*

**spanish**

mrs. sue just give em the answers bro

*January 30, 2015*

**math**

Mabel is installing a square pool in her backyard and wants a circular fence to enclose the pool to create 4 grassy areas around the pool as show in the figure. If the pool is located at the coordinates (1, 5), (5, 8), (4, 1), and (8, 4), what is the amount of fencing Mabel ...

*January 4, 2015*

**Chemistry**

1.) Can you explain to me how Faraday's Constant works in electrolytic cells? (We did a lab experiment on copper wires and sulfuric acid, collecting H2 gas.) I'm not sure how to answer the question. 2.) Does copper conduct more electricity than platinum? Why or why not?

*December 9, 2014*

**MATH**

Janet dreams to go on vacation in three years. How much should she invest now so that she will have $15,000 by that time if the account earns 1 3/8% compounded quarterly?

*November 24, 2014*

**Math**

You invest $5,000 at 3% monthly for 15 years. How much interest will you earn?

*November 24, 2014*

**Math**

Tom Invested $7,000 at 6.5% interest compounded monthly. How much will be in this account after 18 months?

*November 24, 2014*

**science Help 911!!**

Orbital

*November 14, 2014*

**Physics**

A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the level table. The initially moving billiard ball deflects 30.0° from its original direction. What is the speed of the initially stationary billiard ...

*November 13, 2014*

**Chemistry**

A reaction uses 4.5 grams of oxygen and an excess of nitrogen. How many grams of dinitrogen pentoxide are produced?

*October 7, 2014*

**math**

a 20 metre length of cloth is cut into two pieces in the ratio 1:9. how long is each piece?

*October 7, 2014*

**chemistry**

What is the difference between writing a COMPLETE and an INCOMPLETE equations in a) and d)?

*October 3, 2014*

**chemistry**

a.) Write the balanced complete combustion reaction for ethane (C2H6), producing CO2 and water vapour. Make sure to include phases. Also, make sure that the stoichiometric coefficients are whole numbers and are not fractions. b.) What is the enthalpy of reaction (ΔH°...

*October 3, 2014*

**Stat**

Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. Please help mr solve.

*October 1, 2014*

**Stat**

Thirty randomly selected students took the calculus final. If the sample mean was 89 and the standard deviation was 6.2, construct a 99% confidence interval of the mean score of all students. Assume that the population has a normal distribution. what formula do i use????

*September 30, 2014*

**business**

32,25,c

*September 25, 2014*

**Language Arts Answer check PLEASE**

Thank you so much for the help!!

*September 12, 2014*

**Language Arts Answer check PLEASE**

Ms Sue would you double check my answers please

*September 12, 2014*

**Language Arts Answer check PLEASE**

1) What can you infer from this sentence near the start of "The Story Teller"? Most of the aunt's remarks seemed to begin with "Don't," and nearly all of the children's remarks began with "Why" A) It is a long trip to Templecombe B)the...

*September 12, 2014*

**language arts**

Yep answer is D

*September 12, 2014*

**ART HELP PLEASE**

Ok D was my second choice because I don't see a use of bright colors enough to think that about this one and I don't remember about technical skill I have never done art before and with homeschooling this is tough because we get a short lesson then all these pictures ...

*September 9, 2014*

**ART HELP PLEASE**

Its a picture Called a Portrait of a Woman by Jan Mytens and the question is This piece of art is most successful if the person critiquing considers A)creativity *** B)technical skill C) Use of bright Colors D)ability to capture emotion I think A but am really unsure

*September 9, 2014*

**Science Check PLEASE**

put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry that cannot be tested c)...

*September 2, 2014*

**Science Check answers please**

I put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry that cannot be tested c)...

*September 2, 2014*

**English Check my answers please**

Any help please!

*September 2, 2014*

**English Check my answers please**

1. In “Raymond’s Run,” which detail supports the prediction that Squeaky will not let Gretchen win the race? (1 point) I put * marks by ones I thought Squeaky is insulted when Mr. Pearson suggests she give someone else “a break” this year. Squeaky ...

*September 2, 2014*

**chemistry**

Gallium is a metal with a wide variety of uses. Some of its applications include computer memory chips, light emitting diodes and lasers. Radioactive isotopes of gallium are used to image the human body and locate tumors. Naturally occurring gallium consists of two isotopes. ...

*August 29, 2014*

**english**

how many adjectives are in this sentence? two large oaks covered your evergreens.

*July 2, 2014*

**Science**

What is oxygen made of

*June 19, 2014*

**Biology**

How much heat is needed to raise the temperature of 20g of copper from 20 degrees celcius to 40 degrees celcius? (The specific heat of copper is 385J/Kg degrees celcius)

*June 5, 2014*