Wednesday

March 4, 2015

March 4, 2015

Total # Posts: 984

**8th grade math**

You add like terms. (3a+a)+(2a^2-a^2)= 4a+a^2
*November 2, 2011*

**science**

What would happen if blood entering the heart mixed with blood leaving the heart?
*October 27, 2011*

**Math please help**

A rectangular room has a perimeter of 36 feet.One side is 10 feet long.How long is side s?
*October 26, 2011*

**Math please help**

A rectangular room has a perimeter of 36 feet.One side is 10 feet long.How long is side s?
*October 26, 2011*

**Chemistry**

In a certain experiment, when light of wavelength 570 nm is directed on to the photocell, electrons are emitted at the rate of 6.6 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron. How many photons per second are striking the ...
*October 24, 2011*

**Chemistry**

In a certain experiment, when light of wavelength 570 nm is directed on to the photocell, electrons are emitted at the rate of 6.6 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron. How many photons per second are striking the ...
*October 24, 2011*

**statistics**

Listed below are the FICO scores of a simple random sample of United States adults. Do these scores appear to come from a population that has a normal distribution? Explain how you arrived at your answer and defend your conclusion. 708 713 781 809 797 793 711 681 768 611 698 ...
*October 23, 2011*

**statistics**

Listed below are the FICO scores of a simple random sample of United States adults. Do these scores appear to come from a population that has a normal distribution? Explain how you arrived at your answer and defend your conclusion. 708 713 781 809 797 793 711 681 768 611 698 ...
*October 23, 2011*

**Math**

where would you put the parentheses to make this true 124-6 x 0 + 15 = 34
*October 19, 2011*

**hvac**

5 lbs x 144 Btu / lbs = 720 Btu
*October 17, 2011*

**Physics**

A boy starts at rest and slides down a frictionless slide as in the figure below. The bottom of the track is a height h above the ground. The boy then leaves the track horizontally, striking the ground a distance d as shown. Using energy methods, determine the initial height H...
*October 17, 2011*

**Science 6th grade**

Scientists do their experimental tests more than once so they effects of chance errors.
*October 16, 2011*

**statistics**

The deli special lunch offers a choice of three different sandwiches, four kinds of salads, and five different desserts. Use the multiplication rule of counting to determine the number of different lunches that can be ordered using the deli special lunch option, if each ...
*October 9, 2011*

**Algebra**

m^2-5m-14=0. Solve using quadratic formula. Thanks.
*September 28, 2011*

**science 8th grade**

Ebony is a dark wood that has a density of 1.2g/cm cubed and water has a density of 1.0g/cm cubed. Will a block of ebony float in water?
*September 22, 2011*

**Biology**

What is the 5th characteristic for all living things? I already have: 1. Heredity 2. Metabolism 3. Reproduction 4. Homeostasis
*September 21, 2011*

**physics**

John kicks a soccer ball 12 m/s at an angle of 40.0 degrees above the horizontal. What is the ball's maximum height? Where does the ball land?
*September 18, 2011*

**Algebra 2**

[3y+6]>or equal to 21 If you could put this in set notation, graph, and interval notation that would be great. Thanks
*September 17, 2011*

**Algebra**

The XYZ Car Rental Agency charges a flat rate of $29 per day plus $.32 per mile driven. Write an algebraic expression for the rental cost of a car for x days that is driven y miles.
*September 14, 2011*

**math**

How to choose the correct symbol to place between decimal and fraction.
*September 13, 2011*

**Math, topology**

How do I figure out this question...a farmer has a square field containing 11 oak trees. She wants to divide the field into 11 enclosures so that each has one shaded tree for her cattle. Divide the field using four straight lines to indicate where the fences will be built.
*September 12, 2011*

**4th grade economy**

how would a drought effect Florida's orange economy?
*September 12, 2011*

**science**

define the equivalents of one mole of glucose; L of solution, molecules of glucose, etc.
*September 8, 2011*

**5TH grade math**

is it 17.5 ms
*August 25, 2011*

**trig**

what is the reference angle for 17 pi/12?
*August 23, 2011*

**Algebra**

Slim Johnson was usually the best free-throw shooter on his basketball tam. Early in the season, however, he had made only 9 of 20 shots. By the end of the season, he had made all the additional shots he had taken, thereby ending with a season reacord of3 : 4. How many ...
*August 11, 2011*

**Algebra **

The numberator of a fraction exceeds the denominator by 3. If 3 is added to the numerator and 3 is subtracted from the denominator, the resulting fraction is equal to 3/2. Find the original fraction.
*August 11, 2011*

**Algebra**

What number must be added to the numerator and denominator of the fraction 7/19 to make the resulting fraction qual to 3/4?
*August 11, 2011*

**Math**

The numerator of a certain fraction is 3 times the denominator. If the numerator is decreased by 1 and the denomenator is increased by 2, the value of the resulting fraction is 5/2> Find the fraction.
*August 11, 2011*

**Algebra **

The numerator of a fraction exceeds the denominator. If 3 is added to the numerator and 9 is subtracted from the denominator, the new fraction is equal to 5/2. Find the original fraction.
*August 11, 2011*

**Algebra **

What number must be added to both the numerator and denominator by 3. If 3 is added to the numberator and 9 is subtracted from the denominator, the new fraction is equal to 3/2. Find the original fraction.
*August 11, 2011*

**Algebra**

The numerator of a certain fraction is 3 times the denominator. If the numerator is decreased by 1 and the denomenator is increased by 2, the value of the resulting fraction is 5/2. Find the fraction.
*August 11, 2011*

**Globalization**

rise of free markets.. how we got where we are now.. and the nature of the modern world economy.. ??
*July 27, 2011*

**Globalization**

Commanding Heights is a series of videos that portray various aspects of how different countries got reformed from war. Money is one of the investments that caused conflicts during this era. The government tried to develop ways the economic structure could improve by providing...
*July 27, 2011*

**Globalization**

What are the main questions that the Commanding Heights series is posing about globalization and economics and how does it fit into the concept of development?
*July 27, 2011*

**Chemistry**

Which pair of samples contains the same number of hydrogen atoms two moles of NH3 and three moles of N2H4 two moles of NH3 and one mole of N2H4 four moles of NH3 and three moles of N2H4 one mole of NH3 and one mole of N2H4
*June 29, 2011*

**math**

i need to know the vocabulary of a straight line
*May 31, 2011*

**Algebra 2**

Solve x^4-4x^3+4x^2-9=0 given that 1+isqrt2 is a root. I need all of the steps. Thanks
*May 26, 2011*

**Algebra 2**

You know that sometimes before a square root sign you have a number that is raised like an exponent.
*May 26, 2011*

**Algebra 2**

Simplify 2/^6sqrt8 I need all of the steps. Thanks
*May 26, 2011*

**Algebra 2**

Simplify sqrt(72x^3)-5xsqrt(2x). Assume that each radical represents a real number. I need all of the steps. Thanks
*May 26, 2011*

**Algebra 2**

Simplify: 2/^6sqrt8 I need all of the steps. Thanks
*May 25, 2011*

**Algebra 2**

Solve e^(2x-1)=3 I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

If logb^z=1/3logb^x+logb^y, write z in terms of x and y. I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Simplify: log6^(36/6^-10) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Are the functions f and g inverse functions if f(x)=5/3x+1 and g(x)=3(x-1)/5? I need all of the steps on how to determine this. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Simplify: (2^(1+sqrt2)/2^(1-sqrt2))^sqrt2 I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Solve x^4-4x^3+4x^2-9=0 given that 1+i sqrt2 is a root. I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Solve: 2-y=sqrt(y+4) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Simplify: 6/(3+2sqrt3) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Simplify: (2sqrt6-sqrt3)^2 I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Simplify: sqrt(72x^3)-5x sqrt(2x) I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks
*May 25, 2011*

**Algebra 2**

Simplify: sqrt6(sqrt2/2+sqrt3)-sqrt8 I need all of the steps. I need this ASAP because this is due tomorrow. Thanks
*May 25, 2011*

**Global Issues**

Well if someone has seen this film they could help me answer these questions. Thanks
*May 24, 2011*

**Global Issues**

Questions for the movie Human Trafficking The Complete Miniseries: 1. Forms of entrapment/enslavement used 2. a. How does your identity disappear? b. How are you lost in or hidden from society? 3. ICE agents quote: Human Trafficking is the business of the future. Why? Also how...
*May 24, 2011*

**Algebra 2**

Solve: 25^(x+2)=5^(3x-3) I need all of the steps. Thanks
*May 24, 2011*

**Algebra 2**

For positive x and y, which expression is equivalent to (x^1/2-y^1/2)^2? a. x-y b. x+2sqrt(xy)+y c. x-2sqrt(xy)+y I need all of the steps to get to the right answer. Thanks
*May 24, 2011*

**Algebra 2**

Use the rational root theorem to determine which of the following could not be a root of 6x^3+23x^2-6x-8=0 I need all of the steps. Thanks
*May 24, 2011*

**Algebra 2**

How do you find the curve of g(x)=4x-x^2? I need all of the steps. Thanks
*May 24, 2011*

**Algebra 2**

1. Simplify: sqrt6(sqrt2/2+sqrt3)-sqrt8 2. Simplify: sqrt(72x^3)-5x sqrt(2x) 3. Simplify: (2sqrt6-sqrt3)^2 4. Simplify: 6/3+2sqrt3 5. Solve: 2-y=sqrt(y+4) I need all of the steps. Thanks
*May 24, 2011*

**Algebra 2**

Show that the following numbers are irrational: 1. sqrt3 2. sqrt6
*May 12, 2011*

**Algebra 2**

Find the number of times r is a root of P(x)=0. 1. P(x)=x^4+4x^3-16x-16; r=-2 2. P(x)=x^5+3x^4+2x^3-2x^2-3x-1; r=-1 3. When x^3-5x^2+4x+5 is divided by x-c, the quotient is x^2-3x-2 and the remainder is 1. Find c. Thanks
*May 12, 2011*

**Algebra 2**

Use the factor theorem to determine whether the binomial is a factor of the given polynomial. 1. t+sqrt2; P(t)=t^5+t^4+4t+4 2. z-i; P(z)=z^7+z^6+z^5+z^4+z^3+z^2+z+1 3. z+2i; P(z)=z^3+z^2+4z+4 Thanks
*May 12, 2011*

**Algebra 2**

Simplify: 1. 2log10^5+log10^4 2. 2log3^6-log3^4 3. log4^40-log4^5 4. log4^3-log4^48 I need to see all of the steps. Thanks
*May 12, 2011*

**Algebra 2**

Express as a logarithm of a single number or expression: 1. 5log4^p+log4^q 2. log10^x-4 log10^y 3. 4log3^A-1/2 log3^B 4. log5^M+1/4 log5^N 5. log2^M+log2^N+3 6. log5^x-log5^y+2 7. 1-3 log5^x 8. (1+log9^x)/2 I need to see all of the steps. Thanks
*May 12, 2011*

**Algebra 2**

If log10^9=0.95 and log10^2=0.30, find the following: 1. log10^9/2 2. log10^3 3. log10^36 4. log10^20/9 5. log10^900 6. log10^1/9 7. log10^1/2000 8. log10^162 I need to see all of the steps. Thanks
*May 12, 2011*

**Algebra 2**

I need a paragraph explaining the relationship between the zeros of the graph of the function and the solutions to the equation.
*April 28, 2011*

**Math**

2x^2+x-6>0 A=2 B=1 C=-6 Multiply A and C together A=2, C=-6, 2x(-6)=-12 Find factors of -12 that add up to give you a positive value of 1, B We figure out that factors of -12 that add up to give us 1 are 4 and -3 We rewrite our equation as: 2x^2+(4x-3x)-6>0 We can group ...
*April 27, 2011*

**Algebra 2**

A rectangular box is to be x in. by (12-x) in by (15-x) in. What is the greatest volume possible? What will the dimensions of the box be? I need all of the steps to get to the answer.
*April 22, 2011*

**Algebra 2**

You want to make a rectangular box that is x cm high, (x+5) cm. long and (10-x) cm. wide. What is the greatest volume possible? What will the dimensions of the box be? I need all of the steps to get to the answer.
*April 22, 2011*

**Algebra 2**

A farmer wants to enclose 2 adjacent rectangular regions next to a river. No fencing will be used next to the river. 60 meters of fencing will be used. What is the area of the largest region that can be enclosed. I need all of the steps to get to the answer.
*April 22, 2011*

**Algebra 2**

One hundred feet of fencing is available to make a rectangular dog pen against an existing wall. What are the dimensions of the pen that will yield the maximum area? I need all of the steps to get to the answer.
*April 22, 2011*

**Algebra 2**

A rain gutter is made by bending up the edges of a piece of metal of width 36 in. If the length of the piece of metal is 24 in., find the height that maximizes the volume. I need all of the steps to get to the answer.
*April 22, 2011*

**Algebra 2**

A rectangular field is to be enclosed by 300 feet of fencing. Find the dimensions of the enclosure that maximizes the area.
*April 22, 2011*

**Statistics**

A histogram can also help detect any unusual observations (outliers), ... We can compare more than one data set by the use of multiple stem and leaf plots. ... In cases where we have more than one data set to analyse, a 5-number summary
*April 19, 2011*

**MATH please help**

A sweater that was originally $27.95 is on sale for 19.99. Estimate the percent discount
*April 19, 2011*

**MATH please help**

A sweater that was
*April 19, 2011*

**Math**

State the area, A, of the bottom of the box in terms of x. length = 8.5 inches width = 11 inches
*April 18, 2011*

**Math**

The loan arranger
*April 13, 2011*

**physics**

Two rivers, A and B, flow together to form a larger river C. If the flux (volume rate of flow) of river A is 300 gallons per second and the flux of river B is 200 gallons per second, what is the flux of river C? 1)200g/s 2)250g/s 3)300g/s 4)500g/s
*March 31, 2011*

**Calculus B**

Find lim as x goes to 0 of (xsinx)/(1-cosx)
*March 28, 2011*

**Calculus B**

Prove: lim as x goes to 0+ of x^(sinx)=1
*March 28, 2011*

**Calculus B**

The Antiderivative of: (2x+3)/((x^3)+3x) This one is devinately integration by partial fractions but im not sure what i am doing wrong. PLEASE HELP.
*March 28, 2011*

**Calculus B**

The Antiderivative of: x(arctanx)dx It's clearly integration by parts with u=arctanx and dv=x, but after that I go down hill. HELP!
*March 28, 2011*

**math**

The answer is 22 The sum of the digits is 4. It is less than 100 Half of that number is 11, which is odd
*March 28, 2011*

**math**

Drwls - totally confused me on how this problem is done. Can someone else help to solve this problem? If two numbers are relatively prime, what is their LCM? Explain the reasoning and give 2 examples supporting the answer.
*March 26, 2011*

**math**

If two numbers are relatively prime, what is their LCM? Explain the reasoning and give 2 examples supporting the answer.
*March 26, 2011*

**Math**

A ship in calm seas steamed 13 km in one direction, turned and steamed 13 km in another direction, and then returned 12 km back to its original position. The captain then plotted the ship’s course on a nautical chart. She asked her first officer to look at the chart and ...
*March 22, 2011*

**Quadratic Equation**

The dimensions of a rectangle are such that its length is 3 in. more than its width. If the length were doubled and if the width were decreased by 1in., the area would be increased by 150 in.^2. What are the length and width of the rectangle?
*March 15, 2011*

**fractions**

if there are 648 meters vertically and 4/8 by 6 meters horizontally. how do i solve the problem?
*March 14, 2011*

**physics**

A loaded truck can accelerate at 6.4 m/s^2. It loses its load so that it is only 0.9 as massive. By what factor must the acceleration change for the same driving force?
*March 2, 2011*

**physics**

A loaded truck can accelerate at 6.4 m/s^2. It loses its load so that it is only 0.9 as massive. By what factor must the acceleration change for the same driving force?
*March 2, 2011*

**Calculus B**

The antiderivative of ln(2x+1) using integration by parts.
*February 28, 2011*

**math**

tell how many minute have passed and how many degree the minute hand has roteted from 3.33 to 3.45 -----minute pass the minute gand rotates ------degree
*February 23, 2011*

**Physics**

A box of mass m1 = 10.0 kg rests on a smooth, horizontal floor next to a box of mass m2 = 5.0kg. You push on the box 1 with a horizontal force of F = 31.8 N: a.)What net force on box 2 will cause it to have this acceleration? b.)What the force on box 1 on box 2? (In other ...
*February 20, 2011*

**physics**

Thanks for your help but the answers were wrong some how. On my homework it says to answer in Newtons. I know F=ma but w/ these stipulations i don't know how to solve it
*February 20, 2011*

**physics**

3 part question: A 52-kg girl weighs herself by standing on a scale in an elevator. What does the scale read when: a.)the elevator is accelerating downward at 2.5 m/s2? b.)the elevator is accelerating upward at 2.5 m/s2? c.)the elevator is ascending at 10 m/s but its speed is ...
*February 20, 2011*

**7th grade math**

LxWxH=V (8)*(4.6)*H= 88 36.8H = 88 H=2.4m
*February 20, 2011*

**Physics**

2 part question, only looking for part b. a) A driver wearing a seat beat decelerates at roughly the same rate as the car it self. Since many modern cars have a "crumble zone" built into the front of the car, let us assume that the car decelerates of a distance of 1....
*February 20, 2011*

**physics**

A bullet of mass 0.0019 kg moving at 487 m/s embeds itself in a large fixed piece of wood and travels 0.55 m before coming to rest. Assume that the deceleration of the bullet is constant. What force is exerted by the wood on the bullet?
*February 20, 2011*

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