Sunday

August 30, 2015
Total # Posts: 545

**life science**

carbon dioxide is present in expired air
*August 3, 2015*

**algebra**

√6(5-√6)+2√6 simplify the expression
*April 25, 2015*

**Math**

You have a rectangular yard that has perimeter of 72 meters. The current area is between 300 and 350. What are the dimensions of your current fenced in space
*March 9, 2015*

**Math 222**

a^4b plus a^2b^3 a^4b + a^2 B^3 Thank you for the answer, but please explain it to me how you got it
*February 17, 2015*

**Math 222**

). a^4b plus a^2b^3
*February 17, 2015*

**Math 222**

18z plus 45 plus z^2 *My addition sign is not working*
*February 17, 2015*

**College Algebra**

Write an equation that has the given solutions. 0, 2, and 9
*February 16, 2015*

**PED 212**

What are some pros and cons in relevance within a school environment in organized sports?
*February 15, 2015*

**geluksdal secondary school**

Explain how you can determine the number of neutrons in an atom
*February 12, 2015*

**College Algebra**

solve for b, A=1/2(a+b)h
*February 3, 2015*

**College Algebra**

s=c+rc solve for c
*February 3, 2015*

**College Algebra**

A grocer mixes peanuts that cost $1.49 per pound and walnuts that cost $2.69 per pound to make 100 pounds of a mixture that costs $2.21 per pound. How much of each kind of nut did the grocer put into the mixture?
*February 3, 2015*

**College Algebra**

A person who is 6 feet tall walks away from a 50-foot tower toward the tip of the tower's shadow. At a distance of 32 feet from the tower, the person's shadow begins to emerge beyond the tower's shadow. How much farter must the person walk to be completely out of ...
*February 3, 2015*

**College Algebra**

A truck driver traveled at an average speed of 55 miles per hour on a 200-mile trip pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 40 miles per hour. What was the average speed for the round trip?
*February 3, 2015*

**Physics**

A(n) 0.42 kg softball is pitched at a speed of 12 m/s. The batter hits it back directly at the pitcher at a speed of 27 m/s. The bat acts on the ball for 0.016 s. What is the magnitude of the impulse imparted by the bat to the ball? Answer in units of N · s. What is the...
*February 1, 2015*

**PED 212**

All tasks have rules. What is the rule in the example illustrated below? Start with one partner making an underhand serve to the wall. On the rebound, let the ball bounce before the second partner volleys the ball back to the wall. Try to keep the ball above the line. When ...
*January 23, 2015*

**PED 212**

How can a lesson plan be used as a form of program advocacy? (Points : 1) a). it can be published b). it can be shared with other teachers c).it demonstrates a professional ethic d). it can be shown ahead of time to parents
*January 23, 2015*

**PED 212**

I would say( b)
*January 23, 2015*

**PED 212**

What is the purpose of a learned society? a).to create curriculum for local schools b). to gain knowledge on a variety of subjects c). to develop a core of content experts d). to dedicate scholarship and research to specific subjects
*January 23, 2015*

**PED 212**

Which of the following factors is NOT essential to being able to properly strike an object? (Points : 1) a).tracking an object with the eyes b) intercepting an object c).swinging with force d).eye-hand coordination
*January 23, 2015*

**PED 212**

What is the purpose of a learned society?
*January 23, 2015*

**PED 212**

During which stage of play where a child is no longer concerned about what other children are doing?
*January 18, 2015*

**8th Grade Geometry**

given that triangle ABC~ triangle XYZ, angle a=50, angle x=(2x+5y), angle z= (5x+y), and that angle b =(102-x), find angle z.
*January 11, 2015*

**Physics**

A 1500 kg car traveling at 100 km/h west collides with a 1200 kg car traveling east at 85 km/h. The heavier car slows to 25 km/h after the collision. How fast is the lighter car traveling after the two cars collide?
*January 8, 2015*

**algebra**

A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves the same rest stop 1/4 hours later following the truck at a steady rate of 64 mi/h. How long after the truck leaves the rest stop will the ca overtake the truck?
*December 11, 2014*

**math**

Julianne earned $296 working at a grocery store last week. She earns $8 per hour. How many hours does did julianne work?
*December 10, 2014*

**Statistics**

A card is selected at random from a standard deck of cards. Find the probability of randomly selecting a king given that an ace has already been selected.
*December 9, 2014*

**Statistics**

An ice cream store offers 10 toppings. If no topping is used more than once, in how many different ways can a four topping ice cream dessert be formed?
*December 9, 2014*

**heath**

a manic episode is?
*October 29, 2014*

**Math 222**

Posted by Monica on Thursday, October 23, 2014 at 6:36pm. Please help me solve these two Rational Expressions? Sorry my addition sign does not work on my keyboard, so that is why I am using the word "plus". 1). g^2-6g-55 __________ g 2). k^3 plus k ___________ k^2 ...
*October 23, 2014*

**Math 222**

Please help me solve these two Rational Expressions? Sorry my addition sign does not work on my keyboard, so that is why I am using the word "plus". 1). g^2-6g-55 __________ g 2). k^3 plus k ___________ k^2 plus k-42
*October 23, 2014*

**Math 222**

222 - Steve, Wednesday, October 22, 2014 at 12:02am I assume you want to factor the expressions? a^4b + a^2b^3 = a^2b(a^2+b^2) z^2 + 18z + 45 = (z+3)(z+15) •Math 222 - Monica, Wednesday, October 22, 2014 at 12:10am Thank you Steve and can you please explain how you got ...
*October 22, 2014*

**Math 222**

Thank you Steve and can you please explain how you got both answers, so that I can get a better understanding. Thanks
*October 21, 2014*

**Math 222**

Please help me solve these two problems. My addition sign is not working on my keyboard. a^4b plus a^2b^3 18z plus 45plus z^2
*October 21, 2014*

**Math 222**

Please help me solve these two problems. My addition sign is not working on my keyboard. a^4b plus a^2b^3 18z plus 45plus z^2
*October 21, 2014*

**Physics**

a frictionless mass1(1kg) is accelerated by mass two(1kg). The two masses are conceted by inextensible,flexible string. calculate the acceleration of the system of the two masses.
*September 22, 2014*

**Pre-Calculus**

Find all rational zeros of the polynomial, and write the polynomial in factored form? P(x)= 2x^3-3x^2-2x+3
*September 14, 2014*

**College Chemistry II**

What is the pH of rainwater at 30C in which atmospheric Co2 has dissolved, producing a constant [H2Co3] of 1.40x10^-5 M? Take into account the auto ionization of water. Im very confused on how to even start this problem
*August 10, 2014*

**College Chemistry II**

What is the solubility of ZnCO3 at 25C in a buffer solution with a pH of 10.21? ZnCO3 <----> Zn++ + CO3 – - CO3-- + H2O ----> HCO3- + OH- pOH = 14 – 10.21 = 3.79 [OH-] = 1.62x10^-4 M = [CO3--] = [Zn++] Ksp = [Zn++][CO3-] = (1.62x10^-4)( 1.62x10^-4) = 2.63x10...
*August 10, 2014*

**Math 221**

Also this goes along with the first question that I asked about Compounded semiannually. P dollars is invested at annual interest rate r for 1 year. If the interest is compounded semiannually, then the polynomial represents the value of the investment after 1 year. Rewrite ...
*August 5, 2014*

**Math 221**

I am trying to figure out how to Evaluate the polynomial resulting from step 1 using: P = $200 and r = 10%, and also with P = $5670 and r = 3.5% am trying to figure out where I start
*August 5, 2014*

**Math**

(v-5)(v+3) Is this answer correct v+15
*August 4, 2014*

**Math 221**

(-4)^-3 is this -12
*August 4, 2014*

**Math 221**

It looks like the first one
*August 4, 2014*

**Math 221**

No the one I wrote is correct you divide by 3x^2 and there was no parentheses
*August 4, 2014*

**Math 221**

24x^5-15x^4/3x^2
*August 4, 2014*

**Math**

7b^3(5b^6+9b) I am trying to see if this answer is correct 35b^9+63b^4
*August 4, 2014*

**Math**

polynomials (4u^2-2u+7)+(-5u^2+u+3)
*August 4, 2014*

**Math**

Thank you :)
*August 4, 2014*

**Math**

I am doing polynomials, is that the same
*August 4, 2014*

**Math**

(-2x^4)^2 y
*August 4, 2014*

**Math 221**

Polynomials x4y5 x3y6
*August 4, 2014*

**psychology**

The success or failure of attempted persuasion can usually be understood by considering the characteristics of the
*July 15, 2014*

** algebra 1**

Evan is making a table that will be created in the shape of the figure below. The table top is a triangle attached to a rectangle. To purchase the right amount of paint, he needs to know the area of the table top. He can only spend $10 on paint, which is enough to cover 150 ...
*July 1, 2014*

**science**

Its not B its A. I just took this test and I'm looking At the answers. (1 pt) Sequence the same gene in both species to compare their similarity. Incorrect Answer (0 pts) Dissect specimens of both species to look for homologous structures. Unselected answer (0 pts) Search ...
*May 5, 2014*

**math**

The Crabby Apple restaurant lost $2000 in the month of January. If their net worth at the end of the month is -$200. What was the net worth at the beginning of the month?
*May 4, 2014*

**math**

The Crabby Apple restaurant lost $2000 in the month of January. If their net worth at the end of the month is -$200, explain how you would show a child how to find their net worth at the beginning of the month.
*May 4, 2014*

**MATH**

The daily low temperatures during one week were reordered as follows: 2 degrees F, -7 degrees F, 6 degrees F, -3 degrees F, -14 degrees F, -16 degrees F, and -10 degrees F. Explain how you would show a child how to find the average daily low temperature for week.
*May 4, 2014*

**Statistics**

A random sample of 47 students studied for an average of 7.1 hours last week. If the population standard deviation is 1.2 hours, what is the 90% confidence interval for the population mean?
*April 18, 2014*

**Physics**

a) A bullet (m = 0.0250 kg) is fired with a speed of 91.00 m/s and hits a block (M = 2.80 kg) supported by two light strings as shown, stopping quickly. Find the height to which the block rises. b)Find the angle (in degrees) through which the block rises, if the strings are 0....
*March 12, 2014*

**Physics**

Two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. The target box is 3.46 m horizontally from the edge of the table. Bobby compresses the spring 0.97 cm, but the center of ...
*March 12, 2014*

**Physics**

Use the following information to calculate the speed of a ball in a pinball machine at a specific location. The ball is launched by using a spring (k = 703 N/m) compressed by 9.0 cm. Consider the starting position of the ball to be its location when the spring is compressed. ...
*March 12, 2014*

**Physics**

True or false Consider a simple frictionless roller-coaster. It begins at x = 0, at a height of y = H. Then it drops into a dip, reaching a minimum at x = 100, with zero height (y = 0). Finally, it goes back up at x = 200, but only reaches a height of y = H/2. Assume the ...
*March 12, 2014*

**life orientation**

Medicine (orthopedic surgery) 1. Numerous opportunities for continued education and connections. 2. Hands on career, always innovating and improving in technological advancements. Writing 1. Have an impact on society through the exploitation of beliefs. 2. Freedom to create ...
*March 12, 2014*

**Physics**

A 3.3 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 103 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. a) What is its potential energy after it has swung to position B...
*March 12, 2014*

**Physics**

A bead of mass m = 33.5 kg is released from point A which is located 5 m above the ground and slides on a frictionless track. Determine the bead's speed when it reaches point C which is located 2.0 m above the ground.
*March 12, 2014*

**algebra 1**

how do you write this polynomial 5x3 + x5 − 8 + 4x in standard form?
*March 5, 2014*

**Chemistry**

Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is the following. Cr2O3(s) + 2 Al(s) → 2 Cr(l) + Al2O3(s) What masses of chromium(III) oxide and aluminum must be ...
*January 21, 2014*

**Latin America/North America**

The alternative for America agreement of the early 2000s is primary aimed to
*December 8, 2013*

**psychology**

How do the experiences of children who feel anxiety or depression compare to those of adults who feel anxiety or depression? Explain your answers.
*December 5, 2013*

**math**

there are 2 times more cats than the number of dogs at a shelter.
*December 2, 2013*

**Math**

It is just an example.
*October 17, 2013*

**Math**

A proton has a size of 1.23x10^-11 and an electron has a size of 1.4x10^-8. How many times smaller is an electron than a proton? Show your work. If I divided 1.23x10^-11 and 1.4x10^-8, wouldn't 1.4x10^-8 be the numerator or the denominator? Please help!
*October 17, 2013*

**Math**

I thought the proton would have to be in the numerator and the electron would be in the denominator for you to divide?
*October 17, 2013*

**Math**

A proton has a size of 0.000000000123 and an electron has a size of 1.4x10^-8. How many times smaller is an electron than a proton? Show your work.
*October 17, 2013*

**Math**

Would I label it cm3 or..? I'm having trouble. :(
*October 11, 2013*

**Math**

For the number of bags I got 9. However I do not know how to label the number 125,664.
*October 11, 2013*

**Math**

Jim wants to plant pansies in his new planter. How much potting soil should Jim buy? Round to the nearest centimeter. Hint: The height is 100 cm and the diameter is 40 cm. My teacher said to use a specific formula. Out of that formula I got 125,664, but I do not know how to ...
*October 11, 2013*

**Math**

Huong covered a box with sticky-backed decorating paper. The paper costs $.03 per square inch. How much money will Huong need to spend on paper if the length is 7 inches, width is 3 inches, and the height is 9 inches? I thought Huong needed to spend $3.42 because I multiplied ...
*October 9, 2013*

**Math**

Huong covered a box with sticky-backed decorating paper. The paper costs $.03 per square inch. How much money will Huong need to spend on paper if the height of the box is 9 inches, width is 3 inches, and the length is 7 inches? Please show full work. Thank you.
*October 9, 2013*

**social studies (history)**

In what ways did the movement of people and technology into and within the Great Plains effect the United States and its residents?
*October 8, 2013*

**physics**

Two soccer players start from rest, 32 m apart. They run directly toward each other, both players accelerating. The first player’s acceleration has a magnitude of 0.55 m/s2. The second player’s acceleration has a magnitude of 0.40 m/s2. (a) How much time passes ...
*October 7, 2013*

**math**

Suppose there are 100 rabbits on an island and that the rabbit population can triple every half-year. Write an equation you could use to find the number of rabbits, R, after t, years. Using your equation, determine the amount of rabbits on the island in year 10. For the ...
*October 1, 2013*

**Physics**

A cyclist maintains a constant velocity of 5.2 m/s headed away from point A. At some initial time, the cyclist is 251 m from point A. What will be his displacement from his starting position after 85 s? Answer in units of m What will be his position from point A after that time?
*September 29, 2013*

**Social Studies (History)**

What are some short-term causes (if any) of the transcontinental railroad?
*September 28, 2013*

**Social Studies**

Oops, sorry wrong one.. That was supposed to be on a different question.
*September 28, 2013*

**Social Studies**

My bad, I haven't read the website carefully enough to see how much materials and tools they need to construct the railroad. I apologize.
*September 28, 2013*

**Social Studies (History)**

1) What are the materials the workers used to construct the first transcontinental railroad? 2) What are the materials in the railroad? 3) What are the long-term and short-term causes of the transcontinental railroad (if there are any short-term causes)? I WILL APPRECIATE YOUR...
*September 28, 2013*

**Social Studies (History)**

The website you provided me was not very informational on the materials.
*September 28, 2013*

**Social Studies (History)**

Were the materials spikes and wood for both Union and Central Pacific railroads to construct the transcontinental railroad?
*September 28, 2013*

**Social Studies (History)**

What were the materials to construct the transcontinental railroad? I already knew the railroad was mostly constructed by hand by thousands of workers, but i need help to find out what kind of materials they used to build and construct the railroad. Also, what are the ...
*September 28, 2013*

**ELA**

how would you use the word generate in a sentence? i'm confused on how to put it in a sentence. I know that generate means cause (something, esp. an emotion or situation) to arise or come about.
*September 27, 2013*

**ela**

what does it mean to: How do those specific word choices and tone contribute to the meaning?
*September 27, 2013*

**english (ELA)**

what is another word for "spill"
*September 27, 2013*

**Math**

(( cube square root of 7)^1/2)^3
*September 19, 2013*

**chemistry**

Polycarbonate plastic has a density of 12 g/cm3. A photo frame is contructed feom two 3 I n sheets of polycarbonate. Each sheet measures 28 cm by 22 cm. What is the mass of the photo frame
*September 3, 2013*

**algebra**

x-6y+32=1 3x-3y+32=-1
*August 25, 2013*

**math**

a student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer correctly?
*August 10, 2013*

**calculus**

two forces f1 and f2 acting on an object at a 90 degree angle will pull the object with a reluctant force, R, at an angle between f1 and f2. R= ã f1^2+f2^2 R=15 and f1=9 find f2
*July 12, 2013*

**math**

The length of a table is 4m longer than the width. The are is 77m^2. Find the dimensions of the table. l=w+4 w=l-4? I'm stuck?
*July 10, 2013*