Wednesday

October 14, 2015
Total # Posts: 1,462

**Math geometry **

Given AB intersects BD <EFG and <CBD are complementary prove <EFG complements <ABC
*October 13, 2015*

**algebra**

If x2 = 20, what is the value of x? ±square root of 10 ±square root of 20 ±10 ±40
*October 7, 2015*

**algebra**

Those are the only multiple choices
*October 7, 2015*

**algebra**

If (92)p = 98, what is the value of p? 2 3 4 6
*October 7, 2015*

**Algebra**

how do u find it
*October 7, 2015*

**math**

writing expressions mandy collected from 28 subscribers on Monday and from a subscriber on Tuesday
*October 6, 2015*

**math**

so now i got all the factors now what are factor strings
*October 5, 2015*

**math**

um.. well for the factors i got 5x168 and i still dont know what factor strings are
*October 5, 2015*

**math**

please answer
*October 5, 2015*

**math**

name all of the factor and factor strings of 840
*October 5, 2015*

**Math**

1.Suppose you have socks loose in a drawer. You have a black sock, a gray sock and a tan sock. How many outcomes are there for selecting 2 socks? a.Make a tree diagram to model the selection of 2 socks WITHOUT REPLACEMENT. (That is, you keep the sock out of the drawer and ...
*October 1, 2015*

**Math**

That's the answer I got as well. College Math (A.S. Early Childhood Education)
*September 19, 2015*

**math ( having difficulty)**

Superior has provided the following information for its recent year of operation: The common stock account balance at the beginning of the year was $18,000 and the year-end balance was $19,000. The additional paid-in capital account balance increased $4,300 during the year. ...
*September 12, 2015*

**math (please help)**

A company's retained earnings increased $375,000 last year and its assets increased $973,000. The company declared a $79,000 cash dividend during the year. What was last year's net income?
*September 12, 2015*

**algebra**

A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do you have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 25 times the ...
*September 9, 2015*

**algebra**

Of the 30 officers on traffic duty, 15% didn't work on Friday. How many officers worked on Friday?
*September 9, 2015*

**algebra**

. A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do you have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 25 times the ...
*September 9, 2015*

**algebra**

x/45+(250-x)/120=3
*September 9, 2015*

**algebra**

An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire trip took three hours. ...
*September 9, 2015*

**Statistics**

5. For the data presented below, answer the questions that follow. Score on political Score on current Individual awareness test events test 1 24 23 2 16 12 3 11 11 4 9 6 5 8 13 6 14 11 7 17 16 8 19 16 9 21 21 10 25 25 11 18 11 12 13 13 13 11 14 14 6 10 15 9 10 16 12 7 a. ...
*August 1, 2015*

**Statistics**

4. The Graduate Record Exam (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. For each of the following problems: (a) draw a rough sketch, darkening in the ...
*August 1, 2015*

**writing skills **

I am confused on how work citation is to be done.My essays keep getting return.I just need an example of how to do it.
*July 28, 2015*

**geometry**

In the accompanying diagram, triangle ABCis similar to triangle DEF, AC = 6, AB = BC = 12, and DF = 8. Find the perimeter of triangle DEF. it an isoslese triangle 6 and 8 are both base my work 6+2=8 12+2...
*July 16, 2015*

**math (algebra)**

In Professor Tuffguy's mathematics class, 36 students took the final exam. If the average passing grade was 78, the average failing grade was 60, and the class average was 71, how many of these 36 student passed the final?
*July 8, 2015*

**math (algebra)**

x^32-1=(x^16+1)(x^8+1)(x^4+1)(x^2+1)(X+1)(?) Find ? .. How do I do this?
*July 8, 2015*

**math (algebra)**

In a certain circle, the length of a radius is equal to the reciprocal of the length of a diameter. What is the area of this circle?
*July 8, 2015*

**math (algebra)**

How many different numbers stisfy the equation (x-2)^2(x-1)^3(x+1)^4(x+2)^5 = 0 I really need help. Thanks!
*July 8, 2015*

**Peninsula college **

Wendy is traveling 120 miles away from chasity. They are traveling towards each other. If chasity travels 4 mph faster than Wendy and they meet after 4 hours, how fast was each traveling?
*July 7, 2015*

**Algebra**

You and 3 of your friends went to a zoo with a coupon for $10 off the total price of your tickets. If you paid a total of $17 for 4 tickets, how much would you (individually) have paid without the coupon?
*July 1, 2015*

**Math - Statistics**

The proportion of red M&M's made is 0.24. Suppose one took a random sample of 51 M&M's. (a) What is the probability that an SRS of 51 M&M's has as its proportion of red M&M's 0.23 or below? (b) Find the 80th percentile for sample proportions of red M&M's in...
*June 25, 2015*

**Algebra II**

The sides of a triangle are in the ratio 5:12:13. Describe the length of the shortest side if the perimeter is not more than 120 inches.
*June 21, 2015*

**chemistry**

Ksp fo CaSO4 is 6.1*10?-5. how many grams of CaCl2 must be added to 500ml of 0.010M H2SO4 to just start preciptation of CaSO4? I cant figure this out at all.
*June 16, 2015*

**Chemistry**

Thanks! I got it now
*June 16, 2015*

**Chemistry**

Equilibrium constants at 25 ∘C are Substance Kc Value of Kc CaCO3 Ksp 4.5×10−9 H2CO3 Ka1 4.3×10−7 Ka2 5.6×10−11 What is the molar solubility of marble (i.e., [Ca2+] in a saturated solution) in acid rainwater, for which pH=4.20?
*June 16, 2015*

**Chemistry**

I still cant figure this out.
*June 16, 2015*

**Chemistry**

I have the molecular formula C4H4O4. and I know that there is 2 ionisable H ions but I don't know where to go from there.
*June 16, 2015*

**Chemistry**

Item 1 Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fabrics and as a preservative of oils and fats. •In a combustion analysis, a 1.054-g sample of maleic acid yields 1.599 g of CO2 and 0.327 g of H2O. •When 0.609 g of maleic acid is ...
*June 16, 2015*

**Chemistry**

What is the pH change of a 0.220M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.155M with no change in volume?
*June 16, 2015*

**physics**

Two metallic spheres, each with a mass of 0.46 g are suspended as pendulums by light strings from a common point. They are given the same electric charge, and the two come to equilibrium when each string is at an angle of 5.2° with the vertical. If the string is 21.0 cm ...
*May 18, 2015*

**ART**

Thank you!
*May 7, 2015*

**ART**

HEllo i need help on mixing colors because at school i dont have enough of the needed colors. So plz tell me how to mix and get : Orange Green Yellow BROWN! (For the big tree im drawing) And purple thank you and answer ASAP plz!
*May 7, 2015*

**College Chemistry**

Thank you so much
*May 6, 2015*

**College Chemistry **

Calculate the unknown of Ag+ if the potential of the following concentration cell is 300 mV at 25.0 C. Ag|Ag+(unknown)||Ag+(0.100M)|Ag I think I have to use Nernst Equation of Ecell=E0-.0592/nlogQ And at 25C is at 298K so i don't have to change anything. I am not sure if i...
*May 6, 2015*

**Math**

Is 2^9 * 3^12 * 5^6 * 7^3 a perfect cube? How do you know by just looking at it?
*April 29, 2015*

**Social Studies**

How would the Philippine government respond to an insurgency? A. the government would try to work with their members. B. the government would want to support it. C. the government would ignore it. D. the government would fight it fiercely. D?
*April 21, 2015*

**Algebra**

kyle drops a ball from a height of 15 feet above the ground. The function h = -16 f2 +15 gives the height h of the ball (in feet) after t seconds. Graph the function to determine at about what time the ball hits the ground
*April 21, 2015*

**chemisty**

A cylinder with a moving piston expands from an initial volume of 0.350L against an external pressure of 2.70atm . The expansion does 251J of work on the surroundings. What is the final volume of the cylinder?
*April 20, 2015*

**MicroEconomics**

A firm currently uses 50,000 workers to produce 120,000 units of output per day. The daily wage per worker is $100, and the price of the firm's output is $48. The cost of other variable inputs is $400,000 per day. (Note: Assume that output is constant at the level of 120,...
*April 19, 2015*

**chemistry**

2 HI + Li2S2O4 ¨ H2S2O4 + 2 LiI this is what I got and it says I'm wrong? I don't understand why
*April 14, 2015*

**chemistry**

Write a molecular equation for the gas-evolution reaction that occurs when you mix aqueous hydrobromic acid and aqueous potassium sulfide.
*April 14, 2015*

**chemistry**

Write a balanced equation for the reaction between perchloric acid and lithium carbonate.
*April 14, 2015*

**linear algebra-urgent**

could you explain how you got 55/25
*April 8, 2015*

**linear algebra-urgent**

1)let w=[3;4] and u=[1;2] a) find the projection p of u onto w. I found this to be p=[1.32;1.76] b) find a scalar k for which the vector kp has a norm that is equal to one. k=? d)find a vector that is orthogonal to span{w} s=? how do I do this
*April 8, 2015*

**history**

Can you edit my editorial for grammar punctuation, spelling etc? Samantha Witkowski CHC 2D Mrs. Buyers April, 4, 2015 Aboriginal Opinion Editorial On going years of mistreatment to Aboriginals have been heavily weighed and debated amongst the Canadian government. This ...
*April 3, 2015*

**chemistry**

Hello! I am struggling a bit with this problem A gas sample occupies 51.6 L at a pressure of 0.841 atm and 39.6 ºC. What is the amount of gas (mol) in this sample?
*April 3, 2015*

**chemistry**

How many molecules (not moles) of NH3 are produced from 3.55×10−4g of H2?
*April 2, 2015*

**chemistry**

How many grams of sucrose (C12H22O11) are in 2.50L of 0.710M sucrose solution?
*April 1, 2015*

**Chemistry**

Write a balanced equation for the combustion of gaseous ethylene (C2H4), an important natural plant hormone, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water
*March 31, 2015*

**algebra**

A gold ribbon is to be placed around the outside of each rectangle of the frame. Write a polynomial expression to represent the amount of ribbon needed.
*March 31, 2015*

**itzel**

i think she means simplify. If so, it would be 4/11
*March 30, 2015*

**calc**

Suppose the derivative of a function f is f '(x) = (x + 2)^4(x − 3)^7(x − 4)^6. On what interval is f increasing? (Enter your answer in interval notation.)
*March 30, 2015*

**Criminal Justice**

Is it c? Sorry these are hard
*March 22, 2015*

**Criminal Justice**

16. Conviction rates for indigent defendants and those with their own lawyers were about the same in Federal and State courts. About __________% of Federal defendants and __________% of the defendants in the most populous counties were found guilty regardless of the type of ...
*March 22, 2015*

**Criminal Justice**

I think it is A ? Would that be correct?
*March 22, 2015*

**Criminal Justice**

15. Which of the following is not an example of an ethical dilemma a defense attorney may face? A) the prosecutor's winning record. B) client perjury. C) defense receipt of physical evidence. D) a confession in confidence.
*March 22, 2015*

**Criminal Justice**

. In 1215 the __________ was signed. Its article 39 provided a basis for modern juries. A) European Charter B) Charter of Liberties C) Articles of Confederation D) Magna Carta
*March 22, 2015*

**Criminal Justice**

Thanks!
*March 22, 2015*

**Criminal Justice**

D ? Is this correct?
*March 22, 2015*

**Criminal Justice**

. The __________ who conquered England in 1066 used procedures that set the stage for modern juries. A) Romans B) Greeks C) Huns D) Normans
*March 22, 2015*

**Criminal Justice**

. The __________ was the first governing document in the United States. A) U.S. Constitution B) second Constitution of Congress C) Twelve Tables D) Articles of Confederation
*March 22, 2015*

**maths**

express 40% of right angle into radian measure. express two third of straight angle into radian. express sum of angles of a quadrilateral intoradian.
*March 17, 2015*

**language arts**

Why are you guys lying? You're making other people fail. The answer is A, not C. If you took the test and it's wrong then stop spreading the wrong answer along to everyone else. That's extremely happy immature.
*March 11, 2015*

**physics **

A system of 1216 particles, each of which is either an electron or a proton, has a net charge of -5.920×10-17 C. A)How many electrons are in this system (exactly)? B)What is the mass of this system (to three significant digits)?
*March 10, 2015*

**physics **

A charge q1 is inside a spherical surface (although not necessarily at the exact center of the sphere). A second charge q2 sits just outside the surface. Choose whether the following statements are true or false. T/F The total electric flux through the spherical surface ...
*March 6, 2015*

**Biology Ms sue**

1.which of the following is a renewable resource? (A.wind) B.fossil fuels C.minerals D.land 2.The goal of -----is to use cells and tissues to treat human illnesses or injuries. A.clone (B.therapeutic cloning) C.reproductive D.gene therapy
*March 4, 2015*

**Biology **

1.Which of the following is a renewable resource? A.wind B.fossil fuel C.minerals (D.land) 2.The goal of -------is to use cells and tissues to treat human illnesses or injuries. A.clone therapy B.therapeutic cloning (C.reproductive cloning ) D.gene therapy
*March 4, 2015*

**Writing Skills Part 4**

2.which of the following would most likely be an entry in a topic outline? A.Toys can be gender - neutral. *B.Toys children love C.Quality toys should require some imagination D.It's possible for toys to be both educational and entertaining. Thank you for your help Write a...
*March 2, 2015*

**Writing Skills Part 4**

1.When creating a writing plan,which of the following should come first? *A.Material that will capture the reader's interest B.The first section of the body of the essay C.A brief summary of the conclusion 2.Which two things must be accomplished by the introduction if the ...
*March 2, 2015*

**Writing Skills Part 3**

1.Under the Library of Congress system,where would you begin to research for books on the legal system of Greece? A.E B.k C.U [ D.G] 2. You've located three books on a topic you're researching for an essay.The first thing you should do in determining if any of these ...
*March 2, 2015*

**Writing Skills Part 3**

1.Under the Library of Congress system,where would you begin to search for books on the legal system of Greece? A.E B.k C.U [D.G] 2.If a source is reasonable,we know A.The information offered up-to-date,factual detailed,and precise. [B.We can trust and believe author.] C.the ...
*March 1, 2015*

**physics **

A radio station, broadcasting at 89.1 MHz on the FM dial, has two transmission towers d = 40.0 m away from each other, producing signals that are completely in phase. An avid fan of this station is listening to it on her portable radio while jogging directly toward one of the ...
*February 27, 2015*

**Math**

Find the volume of the solid that is obtained when the region bounded by the curves x=9-y^2, x=y^2+1 and y=0 is rotated about the line y=-2. (the upper shape above the x-axis)
*February 22, 2015*

**chemistry**

A student is performing an experiment to find the density of water. She obtains a 100ml beaker, which weighs 53.257 grams, and she fills it with 60 mL of water. The temperature of the water is 25.5 degrees celsius (room temperature). Again the student takes the weight of the ...
*February 16, 2015*

**physics **

Galileo's first telescope used a convex objective lens with a focal length f = 1.65 m and a concave eyepiece. When this telescope is focused on an infinitely distant object, and produces an infinitely distant image, its angular magnification is +3.11. What is the focal ...
*February 14, 2015*

**Chemistry **

The temperature of an object increases by 44.9 °C when it absorbs 3871 J of heat. Calculate the heat capacity of the object.
*February 3, 2015*

**Chemistry **

Your computer monitor has a width of 14.56 inches and a height of 10.92 inches. What is the area of the monitor display in square meters?
*February 2, 2015*

**Chemistry **

What is the mass, in grams, of a pure iron cube that has a volume of 4.30 cm3?
*February 2, 2015*

**math**

plese help
*January 19, 2015*

**math**

Every night when Samantha came home from work she put any change she had in her pockets into a jar. One day she wanted to know how much change she had in her jar. She noticed that she had two more nickels than twice the number of dimes, and eight fewer quarters than twice the ...
*January 19, 2015*

**Algebra2**

When using the Vertical motion model, where does the leading coefficient -16 come from? When will it not be -16 and how will you know? I'm just trying to understand the Model.
*January 3, 2015*

**calculous (Series)**

-2.02 - 2.11 - 2.2 - ... -4 Find the sum of the series
*December 12, 2014*

**Physics**

A ladder of mass M and length 6 m rests against a frictionless wall at an angle of 50 degrees to the horizontal. The coefficient of static friction between the ladder and the floor is 0.5. What is the maximum distance along the ladder a person of mass 11M can climb before the ...
*December 11, 2014*

**Math**

Find the critical points and the interval on which the given function is increasing or decreasing, and apply the First Derivative Test to each critical point f(x)= (7/4)x^4+(28/3)x^3+(-63/2)x^2-252x critical points in increasing order: c1=? min or max? c2=? min or max? c3=? ...
*December 10, 2014*

**Math (Word Problem into formula)**

A chemist is studying the properties of a bronze alloy (mixture) of copper and tin. She begins with 6 kg of an alloy that is one sixth tin. Keeping the amount of copper constant, she adds small amounts of tin to the alloy. Letting x be the total amount of tin added, define c(x...
*December 8, 2014*

**Chemistry**

To 1.0 ml of 1.5%NaCl, water is added to a final volume of 100ml. What is the molarity NaCl of this final solution? 1.5g/100ml I do not know where to go from here?
*November 30, 2014*

**math**

On May 22, 1960, a powerful earthquake took place in Chile. It had a magnitude of 9.5. How much energy did this earthquake release?
*November 20, 2014*

**Math**

If a hen lays 225 days a year, how many eggs can you eat in a day?
*November 19, 2014*

**Math Help!**

k=70
*November 19, 2014*

**chemistry**

10.0 mL of a Cu2+ solution of unknown concentration was placed in a 250 mL Erlenmeyer flask. An excess of KI solution was added. Indicator was added and the solution was diluted with H2O to a total volume of 75 mL. The solution was titrated with 0.20 M Na2S2O3. The equivalence...
*November 19, 2014*

**Or**

or would it be 9(sin theta - 5/9) i believe i did the work wrong
*November 14, 2014*