Saturday

February 13, 2016
Total # Posts: 994

**Statistics**

A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows: one column has number of service calls (X) those numbers are 0 1 2 3 4 5. The next column Probability P (X) those numbers ...
*February 13, 2016*

**Chemistry**

ahh thank you so much!
*February 12, 2016*

**Chemistry**

Three isotopes of Neon occur naturally: 20Ne (mass = 19.9924 amu) 21Ne (mass = 20.9938 amu) 22Ne (mass = 21.9914 amu) If the percent abundance of 21Ne is 0.2600, what is the percent abundance of 20Ne? How do I set up for these type of problems. I tried just using two and ...
*February 12, 2016*

**Chemistry**

How do you Find the mass (in g) of Carbon in 2.980 g Carbon dioxide? I saw the question asked before but couldn't find a solution.
*February 12, 2016*

**math**

Area of a triangle is72cm squared base=12 height=?
*February 11, 2016*

**chemistry**

A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressu of the three gases in the tank are 5 atm of O2, 900 mm Hg of N2, and 1.4 kPa of He what total pressure inside of the tank?
*February 1, 2016*

**COLLEGE ALGEBRA**

Find the dimensions of a rectangle with a Perimeter of 100 cm - its width is 2/3 its length.
*January 31, 2016*

**Chemistry**

How many grams of aluminum sulfate are produced if 15.7 g Al reacts with excess CuSO4?
*January 20, 2016*

**Check my answers Ms. Sue?**

I posted this in my last question but its not showing up for me.. But i have redone the questions you said were wrong and i was hoping you would check them again 1. How did the southern economy change after the Civil War? Shipped raw materials to northern states for processing...
*January 19, 2016*

**how do i show my work math**

how much is 1/3
*January 19, 2016*

**how do i show my work math**

okay
*January 19, 2016*

**how do i show my work math**

show your calculations
*January 19, 2016*

**how do i show my work math**

You would explain how you got the answer
*January 19, 2016*

**World History Check my answers**

Thank you!
*January 19, 2016*

**Ms. Sue Help again??**

Iv'e redone the wrong answers. 1. How did the southern economy change after the Civil War? Shipped raw materials to northern states for processing Plantations were replaced by a new system of sharecropping and tenant farming.* 3. Which economic philosophy allowed American ...
*January 19, 2016*

**World History Check my answers**

1. How did the southern economy change after the Civil War? Southern farmers focused on one main cash crop.* Shipped raw materials to northern states for processing Plantations were replaced by a new system of sharecropping and tenant farming. 2. The Bessemer process was used ...
*January 19, 2016*

**World History Check my answers**

Okay so i put a star* by each of my answers.
*January 19, 2016*

**Chemistry**

A 50.0g sample of copper at 10.0 C is placed in 200.0g H20 at 40.0 C in a calorimeter. Heat flows from the water to the copper until both are at 39.3 C. What is the specific heat of copper? (Csp H20 is 4.18J/g*C.) I don't have any idea how to do this problem. If someone ...
*January 13, 2016*

**Math**

Two ships leave port at 4 p.m. One is headed N38°E and is travelling at 11.5 km/h. The other is travelling at 13 km/h, with heading S47°E. How far apart are the two ships at 6 p.m.? i am in grade 11 :), studying ahead of the class :) its 8 pm here, this question is ...
*January 3, 2016*

**math**

Two ships leave port at 4 p.m. One is headed N38°E and is travelling at 11.5 km/h. The other is travelling at 13 km/h, with heading S47°E. How far apart are the two ships at 6 p.m.?
*January 1, 2016*

**Hunt**

Wyatt and Allyson were asked to solve a percent problem using the number 13 and 38. Wyatt found 13% of 38 and allyson found 38% of 13. Explain why they both got the same answer. Would this work for other numbers as well? Why or why not?
*December 8, 2015*

**Physics**

A 5000 kg truck rear ends a 2500 kg car. Both vehicles applied brakes at the moment of the impact and began to skid. After the impact, the acceleration of the truck is -2 m/s and the acceleration of the car is -3 m/s. If the car skid for 30 m and the truck for 2 m, how fast ...
*December 4, 2015*

**English Grammar**

Is there anything you need to specif at today?
*December 4, 2015*

**Math **

Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625. Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting the motorbike for x days. Part B: Write the ...
*November 25, 2015*

**science**

A glass bottle has a volume of 1L and weighs 500g. When half filled with oil, it weighs 1750g. What is the density of the oil in the bottle?
*November 22, 2015*

**chem**

The mystery compound CxHy is completely reacted with O2 to yield 44 gr CO2 and 18gr H2O. What is the empirical formula of CxHy? I got : C1H2 How much O2 in grams was used in this reaction??
*November 3, 2015*

**chem**

Is it 2E-11?
*November 3, 2015*

**chem**

Assume that the atomic diameter of an atom of element X is 2A and that 1.0 x 10(16th) atoms are arranged in a simple 2D square array. What is the length of each side in cm?
*November 3, 2015*

**chem**

I don't understand it either. I typed it exactly as it is asked. Except the > represents and arrow.
*November 3, 2015*

**chem**

Consider the unbalanced reaction CO + H2O > CH4 + O2. All reactants in the gas phase. Calculate the H per mole of H2O reacted.
*November 3, 2015*

**chem**

So Fe304 is being reduced and C is the reducing agent? Would the initial and final oxidation states be C and 2C?
*November 3, 2015*

**chem**

When balancing the following, what is being reduced, what are the reducing agents, and what is the initial and final oxidation states of the reduction agent? Fe3O4(s) + C(s) > CO2 (g) + Fe
*November 3, 2015*

**chem**

Fe3O4(s) + C(s) > CO2 + Fe Balance the chemical reaction and calculate how many moles of Fe3O4 must be reacted to produce 440 gr CO2 (the > is an arrow)
*November 2, 2015*

**chem**

But how do I convert 2.0 x 10 (-13) km to cm?
*November 2, 2015*

**chem**

2.0 x 10(exp-13) km/0.01=
*November 2, 2015*

**chem**

Consider the unbalanced reaction CO + H2O > CH4 + O2. All reactants in the gas phase. Calculate H per mole of H2O reacted. (The > is an arrow)
*November 2, 2015*

**Statistics**

At the end of the Halloween Festival the organizers estimated that a family of participants spent an average $45.00 with a standard deviation of $12.00. What’s the probability that the mean amount spent will be between $20 and $30?
*October 21, 2015*

**6th Grade Math**

Caleb sold boxes of candy. Some sold for $2, and some sold for $3. He sold a total of 35 boxes and received $92. How many boxes did he sell for $2?
*October 7, 2015*

**Distributed Management System**

what is the crow's foot ERD of this problem?
*October 4, 2015*

**Math**

89=(93 + 86+ 92+ 80+ x) / 5 Solve for 89 x 5 = 445 Add other grades 93+86+92+80=351 445-351=x x = 94
*October 2, 2015*

**Math**

Ryan's average for 5 arithmetic test was 89. On four of the tests he made 96,86,92, and 80. What did he make on the fifth test?
*October 2, 2015*

**Math**

A recipe or trail mix calls for 1/4 cups of raisins, 1 1/2 cups of granola, 1/2 cup of mixed nuts, and 1/8 cup of chocolate chips. What fraction of each ingredient is required to make 5 1/2 recipes
*September 24, 2015*

**Physics **

The tortoise and the hare are in a race of 1000m distance. The tortoise travels the entire race at a speed of 2.0 m/s while the rabbit runs the first 200 m @ 2.0 m/s. Then he stops to take nap for 1.3 hrs and awakens to finish the last 800m with an average speed of 3.0 m/s. ...
*September 22, 2015*

**geometry **

M is the midpoint of JK. find the coordinates of K. 1. J (-8,4) M (-1,1) 2. J (9,-5) M (5, -2) 3. J (0,11) M (-3,2)
*September 21, 2015*

**physics**

A particle accelerates from rest at a uniform rate of 3 m/s^2 for a distance of 200m. -how fast s the particle going at that time? -how long did it take for the particle to reach that velocity?
*September 18, 2015*

**Physics**

Nitrogen boils at -196°C. What is the corresponding temperature in the Fahrenheit scale? A) -290°F B) -346°F C) -315°F D) -196°F E) -321°F
*September 9, 2015*

**Physics **

On a drive from your home to town, you wish to average 52 mph. The distance from your home to town is 108 miles. However, at 54 miles (half way), you find you have averaged only 39 mph. What average speed must you maintain in the remaining distance in order to have an overall ...
*September 9, 2015*

**Physiology**

Yes I do. This is part of my physiology class. Not every professor has the same structure to their lectures
*September 8, 2015*

**Physiology **

How many is moles are in 0.5L of a 3.0M solution of sodium chloride? Sodium chloride dissociates into 2 osmoles per mole. I'm having trouble setting this up. My teacher couldn't explain it clear enough and neither does the book.
*September 8, 2015*

**AP Algebra**

Thank you Steve! Sorry about the "pi" . . Thanks again!
*September 1, 2015*

**2 questions in one post sorry!! **

Accidently put my 2 question as answer to my first question sorry!! Hope someone still answers
*September 1, 2015*

**AP Algebra**

A sphere of metal measures 4.6 cm in radius and has a density of 7.9 g/cm^3. What is the mass of a sphere? FYI: use V=4/3*pie sign*r^3 . . How would I set it up in dimensional analysis?
*September 1, 2015*

**AP Algebra**

A man's average speed is 4.86 miles per hour. Express this in cm/sec .*dimensional analysis* .. the teacher answer is "217.32 cm/sec" however mine came out to be "217.26" My work: (4.86m/hr)(5280ft/1m)(12in/1ft)(2.54cm/1in)(1hr/3600sec) = 217.26cm/sec ...
*September 1, 2015*

**Ap algebra**

Question 1: if a function is undefined at a point can that point be its domain. Explain Question 2: explain what is meant by the minimum value of a function
*August 26, 2015*

**Math **

Explain whether a function that has a slope of 0 can have the attribute of symmetry. . My answer is yes, because even though there is no slope you still have a possibility of it being symmetrical to the y axis depending on the domain. Am I correct
*August 26, 2015*

**Math**

The food that the average American consumes in a day provides 2.0 X 10^3 kcal of energy. How many calories a sec is this? *how to set up work in dimensional analysis*? & *what is "k" in kcal stand for*?
*August 26, 2015*

**Math**

Diamonds are measured in units called a carat. One carat equals 200mg. If a diamond is 0.600 carat, what is the mass of the diamond in ounces? * 1kg=2.205 pounds* *1pound= 16 ounces* . . How do I get to the answer showing work/setting it up?
*August 26, 2015*

**math**

A bag of candy contains 24 oz. If you want to give 18 people equal servings how many ounces should you give each person? 18/24 =3/4
*August 24, 2015*

**Spanish 2**

Dear Profesora, Can you check my answers? 11 of 21 Grammar Questions: Choose the best answer to express the given statement or question. Creo que el poema ______________ por Pablo Neruda. escribió fue escrito** fuera escrito escriba unable to answer Question 12 of 21 ...
*August 13, 2015*

**Math**

A certain recipe requires 6 2/7 cups of flour and 7 2/9 cups of sugar. A) if 6/5 of the recipe is to be made, how much sugar is needed? Write your answer as a proper or improper fraction: B) if the above ingredients are required for one batch, find the amount of flour needed ...
*August 1, 2015*

**math**

p. 84 no.10 (from Solid Mensuration: Understanding the 3D Space book by Earnhart) Plane A which contains an isoceles right triangle forms a dihedral angle of 60 degrees with another plane B. If the hypotenuse of the triangle lies in plane B and measures 8 inches, find the ...
*June 28, 2015*

**calculus1**

Find extrema of f(x)=1-(x to the 2/3) on interval [-1,8]
*June 11, 2015*

**calculus1**

f(x)=2secx-tanx, -π/2<x<π/2 find the points at which the tangent is horizontal
*June 11, 2015*

**calculus1**

Find the arc length of the graph of the equation y+1/4x+x^3/3=0 from the point(2,67/24) to point(3,102/12) help me with this thanx!
*June 11, 2015*

**calculus1**

Find the arc length of the graph of the equation y+1/4x+x^3/3=0 from the point(2,67/24) to point(3,102/12) help me with this thanx!
*June 10, 2015*

**calculus1**

Hi, I have 3 problems here need to be solved, help me please 1.Evaluate ∫ sin2x sec^5(2x)dx 2. If f(x)=√x and P is a partition of [1,16] determined by 1,3,5,7,9,16,find a Riemann sum Rp of f by choosing the numbers 1,4,5,9 and 9(yes 9 again) in the subintervals of ...
*June 10, 2015*

**calculus1**

Approximate the real root of cosx+x=2 to four decimal place. (Using Newton's method) I need help with this! Thank you
*June 9, 2015*

**calculus1**

Great! Except that you wrote "area" instead volume....:P
*June 9, 2015*

**calculus1**

Region R is bounded by x=2-2y^2 and x=1-y^2 find the volume of the solid generated if R is revolved about the y-axis Anybody help me with this? thanks!
*June 9, 2015*

**calculus1**

Set up the integrals that can be used to find the area of the region by integrating with respect to X and Y (the region is bounded by y=3x,y=x,y=4-x) Anyone help me set up the integrals??
*June 8, 2015*

**Social studies**

Ms sue I relly need help its during the republic
*May 28, 2015*

**Social studies**

Hello are u still there ???? I really need help por favor(that means please)
*May 28, 2015*

**Social studies**

During the republic
*May 28, 2015*

**Social studies**

How important was government in the live of the romans? Two predictions ......I NEEED HELP....
*May 28, 2015*

**math**

a box is to be made by cutting out the corners of a square piece of cardboard and folding the edges up. if 3-inch squares are to be cut out of the corners and the box contains 243 cubic inches, what is the length of a side of the original cardboard square
*May 13, 2015*

**Math Check**

Hi! Can someone check my answers? Thanks! Questions: 1.) What are all of the foci's for this Ellipse? (x-2)^2/3 + (y-2)^2/4=1 A.) (3,2) B.) (2,2) C.) (1,2) D.) (2,3) E. (2,1) My answer: B & E. 2.) What is the eccentricity for this Ellipse? A.) 2 B.) 1/2 C.) 3/4 D. 1 My ...
*May 13, 2015*

**Math**

Please show how 7/8 is greater than, less than, or equal to 7/24. Thanks
*May 13, 2015*

**math**

Estimate 99 9/19 + 1/5, Use benchmarks to estimate the total
*April 6, 2015*

**Business **

5. A long-time expert in your field who will guide and advise you in your start-up phase is called a/an A. mentor. B. investment counselor. C. contact. D. entrepreneur. My answer is b If not b then d But I'm bit sure I need help
*April 6, 2015*

**physics**

lol
*April 5, 2015*

**Comprehensive Science**

When an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183°C and the other has a boiling point of -253°C. Has a physical change or a chemical change occurred? Explain. My answer: I ...
*March 25, 2015*

**ela**

1. what is the ordered pattern of rhymes at the ends of lines of a poem or a verse called?
*March 21, 2015*

**Tsi math**

A rectangular room measures 20 by 7 feet Find the cost of installing a strip of wallpaper around the room if the wallpaper costs $0.98
*March 20, 2015*

**math **

Samantha has five objects weighing 1kg,2kg,3kg,4kg and 5kg. If she weighs them two at a time, how many different weighs can she get?
*March 15, 2015*

**Chemistry**

How many grams of HF will be made if you start with 29.6 grams of ammonia and fluorine is in excess?
*March 14, 2015*

**Writing Skills Part 3**

It's C
*March 2, 2015*

**Spanish**

Form complete sentences using the information provided. Use indirect object pronouns and the present tense of the verb. el vendedor/ traer/ las camisetas/ a mis amigos y a mí el vendedor traer la camisetas a mis amigos y a mi.
*February 24, 2015*

**Accounting**

A debit to the capital account was posted to an expense account. This would cause __________. A. assets to be overstated B. liabilities to be understated C. capital to be overstated D. expense to be understated i think its D
*February 21, 2015*

**Accounting **

A debit to a revenue account was posted to an expense account. This would cause __________. A. expenses to be overstated B. revenue to be understated C. expenses to be understated D. capital to be overstated i believe its C
*February 21, 2015*

**Accounting **

A credit to a liability account was posted to an owner's equity account. This would cause __________. A. assets to be overstated B. liabilities to be understated C. owner's equity to be understated D. net income to be overstated i think its D A credit to an asset ...
*February 21, 2015*

**Psyc**

3. Rita, a sports psychologist, has applied for a huge grant to study factors that will produce more winners in the next international competition.
*February 20, 2015*

**Math Ms Sue**

I know what you mean this is rediculous when a child doesn't even have a math book to bring home. well I tried Thank You
*February 9, 2015*

**Math**

Helping 3rd grade granddaughter and I am lost What property does this show? ****=* * * * This is all that is shown
*February 9, 2015*

**Math**

I am lost helping my 3rd grade granddaughter... This is what this problem shows and nothing else What property does this show? ****=* * * *
*February 9, 2015*

**science**

Using your reaction time, estimate the diestance a car would travel at 20m/s (45 mi/h) before you could apply the brakes. To get the deistance in meters you multiply the speed in m/s by your reaction time in seconds
*February 2, 2015*

**Math**

A quadrilateral contains two equal sides measuring 12 cm each with an included right angle. If the measure of the third side is 8 cm and the angle opposite the right angle is 120 degrees, find the fourth side and the area of the quadrilateral.
*February 2, 2015*

**Geometry**

A quadrilateral contains two equal sides measuring 12 cm each with an included right angle. If the measure of the third side is 8 cm and the angle opposite the right angle is 120 degrees, find the fourth side and the area of the quadrilateral.
*February 2, 2015*

**Math**

all good the bx but to the power of 2, not -2 then minus 2.
*January 26, 2015*

**Math**

The domain of y=the square root of bx to the power of two -2 is undefined, which of the following best describes the value of 'b'? a)b is less than or equal to 0 b)b<0 c)b=0 d)b is greater than or equal to 0
*January 26, 2015*

**chem**

Acetone is a common solvent and has a density of 0.7899 g/mL. What volume of acetone, in mL, has a mass of 40.6 g?
*January 25, 2015*