Tuesday

September 16, 2014

September 16, 2014

Total # Posts: 354

**Physics**

An airplane flies 220 km due east, makes a right-angle, and then flies 400 km due north. Find the magnitude of the plane's displacement from it's starting point. Neglect the culrvature of the earth
*September 14, 2014*

**Pre-Calculus**

Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x^4 − 3x^3 + 29x^2, D(x) = 3x^2 + 13
*September 14, 2014*

**Pre-Calculus**

Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x4 − 3x3 + 29x2, D(x) = 3x2 + 13
*September 14, 2014*

**Science **

If the temperature rose from 25C to 45C how many degree Fahrenheit would that be
*September 10, 2014*

**5th grade math**

What is the best estimate for the product of 289 and 7
*August 25, 2014*

**math**

how many different rectangles having an area of 81 square centimeters can you draw if the length and width have an integral value?
*August 10, 2014*

**Math**

A student rented a bicycle for a one-time fee of $12.00 and then a charge of $o.85 per day.She paid $28.15 for the use of the bicycle. How many dats did she keep it?
*May 28, 2014*

**Math**

5{3a-2b(3a+6b)+6a}
*May 28, 2014*

**math**

create a function that models In dollars the total payout T2 after a given month × the listedgraph month is X 6 months M2 IS 2¢ 6¢ 8¢ 10¢ 12¢ and T2 is 3¢ 7¢ 13¢ 21¢ 31¢ 43¢ (hint) t2 is just a double transformation ...
*May 13, 2014*

**Physics**

If a car engine has a power,P. Write an expression for the time it will take to accelerate from w to 4w. Note that P=wt where t is torque.
*April 27, 2014*

**Math **

A piece of a broken wheel is shown. It was taken to a machine shop to be replaced with a new “whole” wheel. Find the radius of the wheel AC=10cm, BD=3 cm and D is the midpoint of AC. Round to the nearest hundredth.
*April 4, 2014*

**Math **

The curvature of a circle with radius r is defined as Descartes’ formula gives a relationship between the curvatures of the four circles. What are Descartes’ formula and the curvature of a circle? What does the sign of the curvature of a circle mean? State Descartes...
*April 4, 2014*

**Math **

An organization is planning a dance. The band will cost $400 and advertising costs will be $100. Food will be supplied at $2 per person. a. How many people need to attend the dance in order for the organization to break even if tickets are sold at $7 each? b. How many people ...
*April 4, 2014*

**Math **

The percent grade of a highway is the amount that the highway raises or falls in a given horizontal distance. For example, a highway with a four percent grade rises 0.04 mile for every 1 mile of horizontal distance. a. How many feet does a highway with a six percent grade rise...
*April 4, 2014*

**PC **

A piece of a broken wheel is shown. It was taken to a machine shop to be replaced with a new “whole” wheel. Find the radius of the wheel AC=10cm, BD=3 cm and D is the midpoint of AC. Round to the nearest hundredth.
*April 4, 2014*

**statistics**

If boys and girls are equally likely to be born, what is the probability that in a randomly selected family of 6 children, there will be at least one boy? (Find the answer using a formula. Round your answer to three decimal places.)
*March 30, 2014*

**math**

There are 2 leaves along 3 in.of an ivy vine. There are 14 leaves along 15 in. of the same vine. How many leaves are there along 6 in. of the vine?
*March 27, 2014*

**Math**

Becca wants to make a giant cherry pie to try to break the world record. If she succeeds in making a pie with a 20 foot diameter, what will be the total distance around the pie?
*March 16, 2014*

**Math**

How many square inches of crust would it take to cover the bottom of a pie dish with a 15 diameter?
*March 16, 2014*

**Math**

Pam served her apple pie on a 13 inch diameter dish. She wanted to tie a ribbon around the dish to make it a little more festive. How long does the ribbon need to be in order to fit around the dish?
*March 16, 2014*

**Fitness Topics**

When you massage an exercised muscle, you help to A. increase the efficiency for the removal of wastes. B. decrease the amount of oxygen moving to the muscle. C. decrease the amount of blood moving to the muscle. D. increase its lifting capacity. im going with B
*March 13, 2014*

**science**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
*February 21, 2014*

**math**

Mr. Smith currently produces 45,000 bushels of potatoes a year. He Can increase his harvest by an average rate of 3% annually. How many years will it take until he can produce 50,000 bushels per year?
*February 12, 2014*

**physics**

60 mph
*February 3, 2014*

**cosmology**

1.3378e19
*January 19, 2014*

**Math**

Find the angel in degrees required to shoot a cannon a distance of 200 yards. It's speed is 400 mps.
*December 4, 2013*

**geometry**

Given the equation of the circle (x – 9)2 + y2 = 484 , where is the center of the circle located at?
*November 12, 2013*

**science**

which of the following is the best course of action when it comes to using natural resources
*November 7, 2013*

**physics**

can someone post the ecuations? thanks
*October 5, 2013*

**Math**

Find two numbers the exact answer is between. 6x7381
*September 25, 2013*

**Precalculus**

So far i have gotten answers that i already knew. I know that 224=16t^2 goes to 14=t^2 but what squared equals 14?
*September 13, 2013*

**Precalculus**

That is my question, i don't know what t equals when 224=16t^2
*September 13, 2013*

**Precalculus**

A ball is dropped from a cliff that is 224 feet high. The distance S (in feet) that it falls in t seconds is given by the formula S=16t^2. How many seconds (to tenths) will it take for the ball to hit the ground?
*September 13, 2013*

**english**

how do you use atlas in more than one
*September 8, 2013*

**tax**

Business Investigation Expenditures. During January and February of the current year, Big Bang LLC incurs $3,000 in travel, feasibility studies, and legal expenses to investigate the feasibility of opening a new entertainment gallery in one of the new suburban malls in town. ...
*July 31, 2013*

**pcc**

A volume of 40.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)→K2SO4(aq)+2H2O(l)
*July 15, 2013*

**math**

What is the unit rate? 1500 meters in 6 seconds?
*July 10, 2013*

**finance**

Based on the following information, calculate the coefficient of variation and select the best investment based on the risk/reward relationship. Std Dev. Exp. Return Company A 10.4 15.2 Company B 14.6 22.9
*July 7, 2013*

**finance**

Based on the following information, calculate the required return based on the CAPM: Risk Free Rate = 3.5% Market Return =10% Beta = 1.08
*July 7, 2013*

**Math**

Gerald can complete a math assignment in 2 hours and a physics assignment in 1 hour. If he has 8 hours to complete a set of assignments, how many math assignments can he complete if he decides to leave the science assignments for the next day? This situation is given by 2x + y...
*May 27, 2013*

**MATH**

THERE ARE 2 SPINNERS ONE IS LABLED A-D THE OTHER IS LABLED 1-8. WHAT IS THE PROBABILITH OF SPINNING EITHER AN A OR B AND EITHER A 1 OR 2. ANSWERS GIVEN ARE 0.0625,0.116,0.125,AND 0.18
*May 22, 2013*

**college algebra**

5^n+7+8=
*May 16, 2013*

**College Chemistry**

For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter. Be careful of the algebraic sign here and remember that the change in temperature is equal to the final temperature minus the initial temperature. Report your answer using 4 digits. Note, this is 1...
*April 12, 2013*

**College Chemistry**

For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter. Be careful of the algebraic sign here and remember that the change in temperature is equal to the final temperature minus the initial temperature. Report your answer using 4 digits. Note, this is 1...
*April 9, 2013*

**Math-Statistics**

Assume that 60% of community college students are female. 1) If we pick 10 students at random justify why we can or cannot model this using a normal model. 2) Find the probability that 8 of the 10 students selected are female. 3) Find the probability that 8 of more of the 10 ...
*April 8, 2013*

**Statistics**

A study of two groups of children since early childhood: One group of 62 attended preschool. A control group of 61 children from the same area and similar backgrounds did not attend preschool. Over 10 year period as adults, 38 of the preschool sample and 49 of the control ...
*April 8, 2013*

**Chemistry**

1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical energy is changed to ...
*March 27, 2013*

**math**

joe draws a line segment 2 1/4 inches long. then he makes the line segment 1 1/2 inches longer. how long is the line segment now?
*March 21, 2013*

**Physics please help!!**

Assume a circular orbit. If a planet's distance from it star is multiplied by 25 times, then by how many times is its orbital period T multiplied ?
*March 4, 2013*

**Physics please help!!**

A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.23 hours. What is density of the planet? Assume that the planet has a uniform density.
*March 4, 2013*

**Physics**

I'm Try a But the b is: ((sigma*x)/(2*epsilon_0))*(1/(sqrt(x^2+R_1^2))-1/(sqrt(x^2+R_2^2)))
*February 25, 2013*

**halp!**

what do I use for a and k in this situation? i tried taking the derivative but no answers i come up make sense based on the problem.
*February 24, 2013*

**Calculus**

The number, N, of people who have heard a rumor spread by mass media by time, t, is given by N(t)=a(1−e−kt). There are 6 million people in the population, who hear the rumor eventually. If 5% of them heard it on the first day, find the percentage of the population ...
*February 24, 2013*

**Math**

The number, N, of people who have heard a rumor spread by mass media by time, t, is given by N(t)=a(1−e−kt). There are 6 million people in the population, who hear the rumor eventually. If 5% of them heard it on the first day, find the percentage of the population ...
*February 24, 2013*

**Physics**

(x*Q)/(4*pi*epsilon_0*((R)^2+(x)^2)^(3/2))
*February 21, 2013*

**Physics**

and the 2) (B) is 0.5
*February 21, 2013*

**Physics**

b) 1283994.39504
*February 21, 2013*

**Physics**

c) 46.244
*February 21, 2013*

**Physics**

The First is -7.901. Just this in the moment.
*February 21, 2013*

**Physics**

A 8.38g bullet is fired into a 4.60kg block suspended as in the figure. The bullet stops in the block, which rises 15.0cm above its initial position. Find initial speed of the bullet.
*February 13, 2013*

**haematology**

discuss how the body manages to maintain the cellular components whithin the reference range in an a healthy individual
*February 13, 2013*

**Humanities**

What are peer reviewed articles/journals?
*February 12, 2013*

**algebra**

what is a subponent
*February 10, 2013*

**Chemistry**

well i think it will be 183g
*February 6, 2013*

**algebra**

How do you go about solving for x in x/2 + x/3 > 5 ?
*January 31, 2013*

**AP Chemistry**

In a ﬁt of boredom, a chemistry teaching assistant swallows a small piece of solid dry ice (CO2). The 8.9 g of dry ice are converted very quickly into gas at 311 K. Assuming the TA’s stomach has a volume of 1.5 L, what pressure is exerted on his stomach?
*January 16, 2013*

**math**

if a house square feet is 3,546 sq what is the perimeter of the house
*December 19, 2012*

**trigonometry**

5.Find the complete exact solution of sin x = -√3/2. 10. Solve cos 2x – 3sin x cos 2x = 0 for the principal value(s) to two decimal places. 12. Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two decimal places. 19.Prove that tan^2a – 1 + cos^2a...
*December 16, 2012*

**accounting**

1,200;300
*December 13, 2012*

**geometry**

in DEF, DE=5 and M,D=55. find the nearest tenth
*December 10, 2012*

**chemistry**

please explain How % errors would affected the mass/moles of substances in lab?
*December 9, 2012*

**SCI/275**

Compare and contrast the western world view with the deep ecology world view. Challenge one of the world views presented in Visualizing Environmental Science. Which world view is closest to your own? Why?
*December 6, 2012*

**social studies**

What were the three major cities in the Islamic world?how did each develop and grow to become important?
*December 3, 2012*

**problem solving**

An average-size female spider and a large spider can lay a total of 2100 eggs at one time. the large spider lays 20times the number of eggs as the average-size spider. how many eggs does the average sized spider lay
*November 13, 2012*

**Algebra**

5-(7/6x)> 7 Subtract both sides by 5 -(7/6x) > 7-5 -(7/6x) > 2 Multiple both sides by -(7/6x) < 2-(6/7) (1/x) < -12/7 x < -7/12 Correction
*November 9, 2012*

**Algebra**

5-(7/6x)> 7 Subtract both sides by 5 -(7/6x) > 7-5 -(7/6x) > 2 Multiple both sides by -(7/6x) < 2-(6/7) (1/x) > -12/7 x > -7/12
*November 9, 2012*

**college algebra**

The answer is 3. Since the y = -√(x+2) - 9 (-) means reflect by x-axis -9 means 9 units down +2 means shift left 2 units The sign makes a difference For shift if its negative it shift right and positive left.
*November 9, 2012*

**chem**

why is hydrogen gas placed in the 1A column of the periodic table?
*November 8, 2012*

**math**

Jack and Jill wash a car at the same rate . Working together it takes them an hour and 10 minutes to wash a car. One day jack started washing a car by himself at 2:30 p m. When he was half way done , Jill joined him . What time did they finish washing the car?
*November 7, 2012*

**math**

- Juwan and Jake both have money in their pockets. If Juwan gave Jake 15 cent then they both would have the same amount of money. However, if Jake gave Juwan 15 cent , then Juwan would have 5 times as much money as Jake would have. How much money do Juwan and Jake have ...
*November 7, 2012*

**math**

Wat is the number sequence for 16 18 20 22 24 26 28 30 32 34 36 38 40 42
*October 16, 2012*

**math**

i got b. and got it wrong
*October 15, 2012*

**math**

The scatter plot shows the study times and test scores for a number of students. How long did the person who scored 81 study? A. 50 minutes B. 81 minutes C. 16 minutes D. 100 minutes helppppppp!!!!!
*October 15, 2012*

**Math**

Can someone help me with this math problem? 14 divided by 2 1/3
*October 9, 2012*

**math**

on the 1st problem i dont understand how x is being added when the sign is subtraction
*September 25, 2012*

**math**

d+3(d-4)=20 please explain
*September 25, 2012*

**math**

x-(12-x)=38 please explain
*September 25, 2012*

**math**

A college bookstore ordered six boxes of red pens. The store sold 32 red pens last week and 35 red pens this week. Five pens were left on the shelf. How many pens were in each box?
*September 24, 2012*

**math**

draw a box-and-whisker plot for the following set of data. 62,76,41,87,60,42,47,69,65.
*July 22, 2012*

**ALGEBRA**

Yolanda is 180 centimeters tall. How many meters tall is that?
*July 2, 2012*

**CHEMISTRY**

HOW MANY GRAMS OF ice at 0oc can be melted into water at 0oc by the additon of 75.0 of heat ? hfus = 6.01 kj/mo
*May 31, 2012*

**angular momentum**

a 8.20 kg particle P has a position vector of magnitude 6.90 m and angle θ1 = 42.0° and a velocity vector of magnitude 6.70 m/s and angle θ2 = 25.0°. Force , of magnitude 8.90 N and angle θ3 = 28.0° acts on P. All three vectors lie in the xy plane. ...
*May 30, 2012*

**chemistry**

the volume of a gas is 250 mL at 350 kPa pressure. what will the volume be when the pressure is reduced to 50 kPa, assuming the temperature remains constant?
*May 30, 2012*

**math**

three coins, a half-dollar, quarter, nickel are tossed at the same time. to say that there is an outcome xyz means that the half-dollar, landed x, the quarter landed y, and the nickel landed z. the eight equally likely possibilites can be listed as follows: HHH HHT HTH HTT THH...
*May 14, 2012*

**science-biology**

what do cells do?
*May 12, 2012*

**Psyc Research Methods**

Yes, there is
*May 2, 2012*

**Applied physics**

two men are carrying a 12m uniform ladder on their shoulders. Man A is 1.0m from one end, and man B is 3.0m from the other end. If the beam has a mass of 200kg, determine the load supported by each man.
*March 31, 2012*

**chemistry**

Jessica's teacher has asked her to bring her 0.40 moles of sodium chloride to the laboratory. She should bring approximately _______ grams.
*March 29, 2012*

**Biology**

Spermatozoa and Oocytes... I thnk it should be that..
*March 24, 2012*