Saturday

August 27, 2016
Total # Posts: 1,163

**math**

Find A - B A = [ 3 7 8 ] B = [ 2 2 6 ] 7 9 3 6 7 8 7 9 9 5 8 6
*August 26, 2016*

**math**

Find A + B A = [ 5 5 7 ] B = 4 9 7 3 8 6 9 2 6
*August 26, 2016*

**math**

Solve the system by Gauss - Jordan elimination. { 1/3 x + 3/4 y - 2/3 z = -8 x + 1/2 y + 1/3 z = 18 1/6 x = 1/8 y - z = -24 a. (−6, 8, −24) b. (−6, −8, −24) c. (0, 8, −24) d. (6,8,24) e. (6, −8, 24)
*August 26, 2016*

**math**

Find values of x and y, if any, that will make the matrices equal. [ x y ] = [ 3 5 ] 1 9 1 9 a. x=-3,y=-5 b. x=5,y=3 c. x=-3,y=5 d. x=3,y=5 e. no solution
*August 26, 2016*

**math**

An airplane flying into a headwind travels the 1650-mile flying distance between two cities in 3 hours and 18 minutes. On the return flight, the distance is traveled in 3 hours. Find the airspeed of the plane and the speed of the wind, assuming that both remain constant.
*August 24, 2016*

**chem**

What will be the result of a reaction if its enthalpy change is positive, its entropy change is negative and Gibbs free energy is positive? A. Never spontaneous B. Nonspontaneous, if the temperature is low C. Spontaneous, if the temperature is high D. Always spontaneous
*August 19, 2016*

**Math**

The answer options I get are either a. 0, pi/3 b. 0, pi/6, pi/3, pi/2 which one would you say suits best?
*August 19, 2016*

**Math**

In the interval 0 'less than or equal to' x 'less than or equal to' pi find the values that satisfy the equation cos 2x - sin x = 0
*August 19, 2016*

**Math**

Tony visits the local fair and sees one if therides, the ferris wheel. The ferris wheel has a diameter of 50 feet and is on a platform of 4 feet. if it takes 12 seconds to make one full revolution, what is the equation of the height of a person on the ferris wheel at any time...
*August 19, 2016*

**Math**

Thank you. Can you explain to me the difference between ( and [ ?
*August 17, 2016*

**Math**

Let f(x)= 2x - 1, g(x)= 3x - 2. Find the domain of the function,(f + g)(x)
*August 17, 2016*

**Math**

Find the M is the midpoint of the line segment PQ, what is the coordinates of point Q? P (4, 5), M (-2, -3)
*August 17, 2016*

**math**

find the trigonometric form of the complex number - (square root) 3 + i
*July 16, 2016*

**math**

find the trigonometric form of -12-12(square root)3i a. 24(cos2pi/3 + isin 2pi/3) b. 24(cos4pi/3 + isin 4pi/3) c. 12(cos 4pi/3 + isin 4pi/3) d. 12(cos12pi/3 + isin 2pi/3) e. 12(squareroot) 2 (cos4pi/3 + isin 4pi/3)
*July 16, 2016*

**math**

find the standard form of the complex number shown below 9(cos 11pi/6 + isin 11pi/6) a. 2/9 - 2(squareroot)3/9 i b. -4(squareroot)3/9 + 4/9 i c. 9/2 - 9(squareroot)3/2 i d. 9(squareroot)3/2 - 9/2 i e. -9(squareroot)3/4 - 9/4 i
*July 16, 2016*

**Physics**

A cube of side L is place in a uniform electric field E = 3200 N/C. What is the net flux through the cube. Assume the electric field lines are parallel with the edges of the cube. Make sure you know why this is the answer. I know its not perpendicular or at an angle So if it...
*June 28, 2016*

**statistics**

A coin is biased so that the probability of obtaining a head is 2/3. The coin is tossed four times. Find the probability of obtaining exactly two heads.
*June 21, 2016*

**Language A**

How about the third one?? And sorry about that
*May 19, 2016*

**Language A**

Selecting 1: There's good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatened-species list under the federal Endangered Species Act. The bad news? Some ...
*May 19, 2016*

**Language A**

1: There's good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatened-species list under the federal Endangered Species Act. The bad news? Some politicians want ...
*May 19, 2016*

**Language A**

how does the author of selection 1 express his or her point of view differently than the author of selection two? author of selection one agrees with abandoning federal protection of grizzly bears author of selection one believes that the increase in grizzly bear population ...
*May 19, 2016*

**Civics**

Thank you :)
*May 18, 2016*

**Civics**

Beginning in 1995, most countries in the European Union started to switch to a common currency. The values of different European currencies were linked to the euro. Countries in the European Union could then trade without converting currency. Why would adopting a common ...
*May 18, 2016*

**algebra**

294 round to ten
*May 4, 2016*

**algebra**

is that the answer
*May 4, 2016*

**algebra**

A house has increased in value by 38% since it was purchased. If the current value is $483,000 , what was the value when it was purchased?
*May 4, 2016*

**Calculus**

I figured out the answers.
*April 30, 2016*

**Calculus**

An island is 3 mi from the nearest point on a straight shoreline; that point is 6 mi from a power station. A Utility company plans to lay electrical cable underwater from the island to the shore and then underground along the shore to the power station. Assume ...
*April 30, 2016*

**Geometry**

If the width of rectangle ABCD is 8 cm and the length of diagonal line AC is 14, find the length of rectangle ABCD. A2 + b2 = c2. 64+ b2 =196. square root of b2 = square root of 132. B =2square of 33. L = ?
*April 6, 2016*

**History**

worked for connexus
*March 24, 2016*

**geometry**

The area of a triangle is 6 square feet. The base is 3 times the height. What is the base of the triangle?
*March 22, 2016*

**Organic chemistry**

Limone (MW 136g/mol) is a pleasant smelling liquid found in lemon and orange peels. The boiling point of limonene is 175 ˚C, but it co-distills with water at 97.5 ˚C. If the vapour pressure of water at 97.5˚C is 690 mmHg, what percent (by mass) of the steam-...
*March 9, 2016*

**LA**

Did you take the test? i need help and i dont what the text is that they want us to proivide an example from.
*March 7, 2016*

**Physics**

find the heat flow through the sides of an 25cm tall by 10cm wide of ice water in 46s.The glass is 6.00mm thick; the temperature is inside is 28 celcius, the temperature outside is 50 celcius
*February 25, 2016*

**chamistry**

24000cm3
*February 19, 2016*

**chamistry**

formula: 2Cl- ==> Cl2 + 2e- in one experiment, the volume of chlorine gas formed was 18cm3. i) calculate the amount, in moles, of chlorine gas in 18cm3.(the volume of 1 mol of a gas at room temperature and pressure is 24000) ii) calculate the quantity of electricity, in ...
*February 19, 2016*

**chemistry!**

what observations are made when you bubble chlorine into a solution of potassium iodide?
*February 19, 2016*

**Math**

Sorry I meant bigger
*February 17, 2016*

**Math**

Sorry I meant bigger
*February 17, 2016*

**Math**

A piece of wire is 60 inches long. The wire needs too be bent into two peices. The prices are both bent in a square. If the ratio of the length or the pieces are 3:2. What is the ration for the smaller square to the nuggets square?
*February 17, 2016*

**Math**

Hello so I'm just wondering comparing the variable x and the number 9, do they have different degres? I know that x has a degree of 1 but for 3 i'm not sure...please help
*February 16, 2016*

**Physics**

Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0-V batteries of a 845-kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min (b) climb a 200-m high hill in 2.00 min at a ...
*February 14, 2016*

**Health**

1. One of your friends tries to stop an argument between you and your sister. Your friend is practicing A. empathy B. hazing C. harassment D. mediation** 2. Which is the best example of a win-win situation? A. One side gets what it wants. B. Both sides get what they want, but ...
*January 22, 2016*

**Algebra help pls fast**

How do you Find the lateral area of a square pyramid. base:8 Height:22. and side:8 Help pls
*January 8, 2016*

**world**

lol
*January 8, 2016*

**Math**

2 is wrong(D) 3 is wrong (B) 4 is wrong. The first one is correct
*January 8, 2016*

**Math**

So I can tell you if they are correct?
*January 8, 2016*

**Math**

Im good at this but what are your answers you choose?
*January 8, 2016*

**Pre-Algebra Help pls fast**

How do you Find the lateral area of a square pyramid. base:8 Height:22. and side:8 Help pls
*January 8, 2016*

**Physics**

A spring with a force constant of 1.0 N/cm is compressed to a displacement of 10.0 cm. When released, it's energy is used to rotate a mass of 0.50 kg, secured by a spring, around in a circle with radius of 0.75 m, starting at the top of the circle. After 0.3 s has elapsed...
*December 15, 2015*

**Physics**

A spring with a force constant of 1.0 N/cm is compressed to a displacement of 10.0 cm. When released, it's energy is used to rotate a mass of 0.50 kg, secured by a spring, around in a circle with radius of 0.75 m, starting at the top of the circle. After 0.3 s has elapsed...
*December 15, 2015*

**Geometry**

when two parallel lines are cut by a transversal and one alternate interior angle is x squared and the other is 3x. How do u slove for x?
*October 29, 2015*

**geometry **

if two parallel lines are cut by a transversal and two interior angles are 3x and x sqaured. how do you solve for x?
*October 29, 2015*

**science- physics**

Two spheres are launched horizontally from a 1.1 m -high table. Sphere A is launched with an initial speed of 4.5 m/s . Sphere B is launched with an initial speed of 1.5 m/s . What is the distance that sphere A travels from the edge of the table? What is the distance that ...
*October 15, 2015*

**math**

There are 3 pink marbles, 2 yellow marbles, and 5 blue marbles in a bag. What is the probability of drawing 2 pink marbles?
*October 13, 2015*

**Math**

The expression 18h + 100p represents the amount(in dollars) that an insurance salesperson earns for working h hours and selling p policies. How much does the salesperson earn for working 10 hours and selling 3 policies? Thank you so much.
*October 8, 2015*

**science- physics**

y= 24
*October 8, 2015*

**science- physics**

A position vector with magnitude 40 m points to the right and up. Its x-component is 32 m . What is the value of its y-component?
*October 8, 2015*

**science- physics**

Find the x- and y-components of the vector d⃗ = (6.0 km , 31 ∘ left of +y-axis). I worked it out and got 5.14, 3.09 and apparently it's wrong, I don't know what I did wrong.
*October 8, 2015*

**History**

Before the Industrial Revolution, people would mostly farm and everyone would help out. They would use animals for transportation and got their food from farming or trading for food. Clothing was sewn by hand.
*September 30, 2015*

**U.S. History**

Dry, right?
*September 30, 2015*

**U.S. History**

Was it easier for Paleo-Indians (hunter gatherers) in dry climate or cold climate?
*September 30, 2015*

**What is the approximate distance between points A and B?**

A coordinate grid is shown from negative 5 to 0 to 5 on both axes at increments of 1. The ordered pair negative 4, 5 is labeled as A, and the ordered pair 3, negative 2 is labeled as B. 3.74 units 7.95 units 8.56 units 9.90 units
*September 28, 2015*

**Geometry**

What is the approximate distance between points A and B? What is the approximate distance between points A and B? A coordinate grid is shown from negative 5 to 0 to 5 on both axes at increments of 1. The ordered pair negative 4, 5 is labeled as A, and the ordered pair 3, ...
*September 28, 2015*

**Geometry**

What is the measure of angle x? A pair of parallel lines is cut by a transversal. An exterior angle on the left of the transversal is labeled as 40 degrees. An interior angle on the right of the transversal, which is not vertically opposite to the 40 degree angle, is labeled ...
*September 28, 2015*

**science- physics**

A car is traveling at a steady 90 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.3 m/s/s.How much time elapses before the motorcycle is moving as fast as the car? How far is the motorcycle from the car when it...
*September 27, 2015*

**physics**

In college softball, the distance from the pitcher's mound to the batter is 43 feet. If the ball leaves the bat at 105 mph, how much time elapses between the hit and the ball reaching the pitcher? I figured out how many ft there would be in a second, but I'm not so ...
*September 18, 2015*

**maths**

I think 38 because jade ate 4. Nicole ate 8. Kahlee ate 16. And Chris ate 10. Add them all up and you get 38.
*September 18, 2015*

**Geometry**

but how do i fin <1 and <3?
*September 14, 2015*

**Geometry**

but how do i fin <1 and <3?
*September 14, 2015*

**Geometry**

Two lines intersect so that angle 1 and angle 3 are vertical angles, angle 2 and angle 4 are vertical angles, and angle 1 and angle 2 form a linear pair. how do you slove for x and find the measure of all the angles when angle 2= x sqaured -3x and angle 4= 6x=10 please help it...
*September 14, 2015*

**Geometry**

line BD bisects angle ABC. Find angle ABD, angle CBD, and angle ABC if angle ABD equals 3x+6 and angle DBC equals 7x-18 please help it would mean a lot
*September 10, 2015*

**math PLEASE HELP**

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. Let $M$ be the midpoint of $\overline{AD}$. If the areas of triangles $ABM$ and $CDM$ are 5 and 17, respectively, then find the area of trapezoid $ABCD$.
*August 9, 2015*

** Thesis Statement **

I have to write a summary response essay to "How to Tame a Wild Tongue" by Gloria Anzaldua. However I do not know how to construct this thesis. The text is about Anzaldua's frustration towards having to change her accent, language, and being told how to talk ...
*June 11, 2015*

**Physics**

At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m) How do I work this problem??
*May 23, 2015*

**Math**

A pet store is building new cages for their birds. They have 8 cockatiels, 32 parakeets, and 28 finches. How many cages will they need if each cage will hold either 2 cockatiels, 10 parakeets, or 14 finches. The different types of birds are all kept separate.
*May 21, 2015*

**Math**

A pet store is building new cages for their birds. They have 8 cockatiels, 32 parakeets, and 28 finches. How many cages will they need if each cage will hold either 2 cockatiels, 10 parakeets, or 14 finches. The different types of birds are all kept separate.
*May 21, 2015*

**Math**

Gina is tying up a stack of newspapers with string. She wants the string to wrap around twice, once lengthwise and once crosswise. If the stack of newspapers is 11 inches wide, 13 inches long, and 15 inches high, how much string will she need?
*May 15, 2015*

**Probability**

Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue eyes? If her first ...
*May 12, 2015*

**Math**

Jameson has a storage bin that is the shape of a cube for his building blocks. If one side of the cube measures 2 feet, how many cubic feet of space does he have for storage?
*May 10, 2015*

**Math**

Tobias is helping his uncle paint the side of a barn. Each can of paint covers 80 square feet. If the side of the barn is 10 feet high and 15 feet wide, how many cans of paint will Tobias need?
*May 10, 2015*

**algebra**

a line has a slope of 5. it passes through the points (1,4) and (6,y). what is the value of y?
*May 8, 2015*

**math**

Larry and Willa are each reading the same book.Larry has read 2/3 of the book.Willa read 4/6 of the book,so she read more.Is Willa correct?Explain
*April 15, 2015*

**chemistry**

.300 molar
*March 31, 2015*

**chemistry**

Sorry it is .300ml
*March 31, 2015*

**chemistry**

How many ml of molar sulfuric acid is to be added to 50.0 ml of 0.250 molar sodium hydroxide solution to neutralize it completely . cannot post reaction sorry ..
*March 31, 2015*

**math**

Suppose you borrowed $15000 to buy a car at an interest rate 7.2% compounded monthly. What will the monthly payments be on loans of 36, 48 and 60 months if you do not have to put any money down on the financing?
*March 18, 2015*

**chemistry**

what's the lewis dot diagram for methanol?
*March 13, 2015*

**checking my answers.**

In the winter of 1976, when I was only four years old, my family moved into a modest home in a growing Greenville neighborhood. Upon a slope on one side of the house, stood a dozen tree sprigs looking rather bald and barren. By springtime, however, the little trees began ...
*March 12, 2015*

**Trig**

A pendulum swinging through a central angle of Ts completes an arc of length 6.4 cm. What is the length of the pendulum?
*March 8, 2015*

**U.S. HISTORY**

besides, financial and foreign affairs...what problems did the U.S. face after the war of 1812?
*March 1, 2015*

**History**

besides, financial and foreign affairs...what problems did the U.S. face after the war of 1812?
*March 1, 2015*

**Art**

thanks Bubbles! 3/3 100%
*February 28, 2015*

**Psychology 315**

I have ti figure out the correlation coefficient of a statistical factor o 4 personin a dextrity and anxiety test. 1 1 10, 2 1 8, 3 2 4, 4 4 2 . So I have to figure out the correlation coeficient? this is may part of the task.
*February 25, 2015*

**physical science**

How high is a building when an anvil takes 4 seconds to hit the ground? How long will it take a piano to hit the ground when dropped off a building 103 meters high?
*February 15, 2015*

**english**

influence
*February 11, 2015*

**algebra**

Find the equation of a line that passes through the points (1/3, 2/5) and (–4/5, 1/2). Please put your final answer in standard form (Ax + By = C) and please make sure that there are NO fractions (or decimals) in this answer and that the “x” term is positive. ...
*February 10, 2015*

**What study would be the best? Help with Psychology**

experiment
*January 27, 2015*

**Science**

For the dissociation of acetic acid, CH3COOH CH3COO- + H+, the free energy change, ΔG° = 27.26 kJ/mol. What is the free energy change, ΔG°', in the biochemical standard state? Given R = 8.315 J/mol · K. T = 25°C.
*January 24, 2015*

**Chemistry**

14.6 mL of hydrochloric acid is completely neutralized by 25.0 mL of 1.40 M sodium hydroxide, what was the hydrochloric acid mass percent (m/m) before the titration? (Density of hydrochloric acid is 1.02 g/cm3)
*December 12, 2014*