Thursday

April 28, 2016
Total # Posts: 366

**insurance**

of 500 employees a firm 280 have a life insurance policy, 400 have a medical insurance cover and 200 participate in both programmes. what is the probability that a randomly selected employee will be a participant in at least one of the two programs (ii) determine the ...
*March 10, 2016*

**math help please **

a plane intersects a square pyramid perpendicular to its base but not through a vertex.The plane forms a cross section what is the shape of the cross section a)trapezoid b)triangle c)square d)rectangle
*March 9, 2016*

**math**

15 quarters, 30 dimes, 34 nickels, 68 pennies
*March 9, 2016*

**math help please **

a plane intersects a right rectangle prism perpendicular to its base .The plane forms cross section.What is the shape of the cross section? a)parallelogram,that is not a rectangle b)triangle,that is not equilateral c)trapezoid d)rectangle
*March 9, 2016*

**math**

a square pyramid is cut perpendicular to its base and through the vertex.What two-dimensional figure is formed by the cross section ? a)parallellogram b)rectangle c)square d)triangle
*March 9, 2016*

**math**

Find the height of the tree 27feet and 14feet what is the height of the tree to the nearest tenth
*March 8, 2016*

**Chemistry**

I need major help with balancing redox reactions. I can't seem to get this one: (in basic conditions) NBr_3(aq)=> N_2(g) + Br^-(aq) + HOBr(aq) I don't know how to split this up properly, and when I do it is like impossible to balance it. Thanks!
*February 29, 2016*

**Math**

I actually didn't lose the 1, if you look at my final answer.
*February 27, 2016*

**Math**

integrate (x^2+8)/(x^2-5x+6) by partial fractions method. I first did long division, and came up with 1+((5x+2)/(x^2-5x+6)). Then I did partial fraction for (5x+2)/(x^2-5x+6) by going A/(x-3)+B/(x-2) and I got 17/(x-3)-12/(x-2) to take the integral of. But when I check online ...
*February 27, 2016*

**math**

integrate dydx=(4sqrt(y)lnx)/x. Check my answer? I got y=((2ln^2(x)+c)/2)^2. Is that right?
*February 24, 2016*

**Math**

integrate dy/dx=x(y^(1/2))(cos^2(y^(1/2))^2) I know I need to separate, and Iv'e moved dx to the right side with dy on the left. Don't know how to go on.
*February 24, 2016*

**Trig Identities**

Why does cos^2(x)= 1/2cos(2x)+1/2? I am trying to integrate, but the answer key says to first rewrite the expression like the above. I don't get how to change cos^2(x) into that. Explain?
*February 21, 2016*

**Antidifferentiation**

In addition, could I also get help with this substitution question? (y^3+6y^2+12y+8)(y^2+4y+4)dy I have no idea. I made the first expression into u, derived it, plugged it back in to get 1/3|integration|(u)du. I don't know how to go on from here.
*February 17, 2016*

**Antidifferentiation**

1. A stone is tossed upward with a velocity of 8m/s from the edge of a cliff 63 m high. How long will it take the stone to hit the ground at the foot of the cliff? Using antidifferentiation method, I got dv=-9.8dt. The I integrated and got v+constant1=-9.8t+constant2. Then ...
*February 17, 2016*

**Math**

use newton's method to estimate all real solutions of the equation x^3. I am having trouble coming up with a good guess. I went with x1=1, but that doesn't seem to be working. Any thoughts on which number should be the best first guess?
*February 15, 2016*

**Math**

The base of a pyramid-shaped tank is a square with sides of length 12 feet, and the vertex of the pyramid is 10 feet above the base. The tank is filled to a depth of 4 feet, and water is flowing into the tank at the rate of 2 cubic feet per minute. Find the rate of change of ...
*February 14, 2016*

**Calc**

my function is xe^(-x).
*February 14, 2016*

**Calc**

The figure shows the graph of f(x)=xe^x, x greater than or equal to 0. figure: f(x) curve is drawn and under the max. point/ concave down curve there is an inscribed rectangle. with width from a(left) to b(right) and height up to a certain point of f(x). Let a > 0 and b >...
*February 14, 2016*

**Math**

1. f(x)=x^2(e^x) find a point where the tangent is horizontal. The answer is apparently (-2, 4/e^2). But I got 0 when I solved for the derivative. I don't get this. 2. What value of x does the function f(x)=(x^3+27)^(1/2) have vertical tangents? My approach was to find ...
*February 11, 2016*

**math help please **

if the pre image of a figure is located at (4,2) (-3,-3)(0,8) and it is reflected in the y-axis followed by a translation of 3 units left and 6 units down where is the new image locate give vertex coordinates
*February 10, 2016*

**math**

if the pre image of a figure is located at (4,2) (-3,-3)(0,8) and it is reflected in the y-axis followed by a translation of 3 units left and 6 units down where is the new image locate give vertex coordinates
*February 10, 2016*

**math**

write a single translation in algebraic notation for the following (x,y) (x-6,y+2) followed by (x,y) (x+3,y+1)
*February 10, 2016*

**math**

describe a single translation that would result from moving a figure,2 units left and 1 unit down then 5 units right and six units up
*February 10, 2016*

**math**

describe the single transformation that would be equivalent to a reflection over the y-axis followed by a reflection over the x-axis
*February 10, 2016*

**Math**

Find quadratic regressive equation for the following f' points; (x, f'(x)): (-4,74); (-3,39); -2,10; -1,-6; 0,-14; 1,-12; 2,0; 3,22; 4,55 It's something really complicated, and I'm later asked to find the original equation, which is a cubic function. Any idea ...
*February 9, 2016*

**Math**

1. 1. A police cruiser approaching a right-angled intersection from the north, is chasing a speeding car that has turned the corner and is now moving due east. When the cruiser is 0:6 miles north of the intersection and the car is 0:8 miles to the east, the police determine ...
*February 7, 2016*

**Math**

Use Newtons Method to find 13^(1/4) correct to four decimal places. I know the formula X_(n+1)= X_n - [f(X_n)]/[f'(X_n)]. I am not sure how to go on from there. I made the equation into y=X^(1/4), but I can't seem to figure out how to go on. Please help? Thanks in ...
*February 5, 2016*

**science**

which of the following is the function of live
*December 11, 2015*

**accounting**

The trigger spectators aggression in sport when a referee or other official clearly rules wrongly in an action .more so if they do it again even when the rival team scoring
*November 20, 2015*

**chem**

solution of 0.148 M sodium iodide for an experiment in lab, using a 500 mL volumetric flask. How much solid sodium iodide should you add
*November 16, 2015*

**Physics**

A 100g piece of ice at 0 degrees celcius is placed into a container holding 200g of water, initially at temperature 25 degrees celcius. Heat flows from the water to the ice, cooling the water and melting the ice. Calculate a) how many moles of ice and how many moles of water ...
*November 4, 2015*

**Math**

Solve the equation 2/3 O= n-3m
*October 24, 2015*

**Algebra**

paint express charge $30 per gallon of paint plus $1.10 per square foot of wall space. color creations charges $24 per gallon of paint plus $1.20 per square foot of wall space. robert estimates he will need four gallons of paint for the rooms he'd like painted. how much ...
*October 23, 2015*

**Science**

I am writing a mock biotechnology research proposal for class and I don't know what I should make this research plan about. What are some of the most breaking scientific news, or diseases and issues in this field(biology preferred, or chemistry) that are currently having ...
*September 30, 2015*

**Math**

A function has zeros of 5 and -1. If a horizontal translation is implemented, what is the least amount of transformation for both of the zeros to be positive integers? Is zero a positive integer?
*September 24, 2015*

**wrighting**

Now that you're aware of the information at your disposal, describe how it will be helpful to you as you pursue your college degree
*May 15, 2015*

**math homework**

Michael went into a comic book store to pick up a few of his “much wanted” comics. There are 4 different Batman issues, 5 different Star Wars issues, and 2 different Superman issues to choose from. How many combinations are possible for Michael to pick up one issue ...
*April 30, 2015*

**math homework**

Michael went into a comic book store to pick up a few of his “much wanted” comics. There are about 4 different Batman issues, about 5 different Star Wars issues, and about 2 different Superman issues to choose from. Exactly how many combinations are possible for ...
*April 30, 2015*

**math**

Would the solution be just 40?
*April 30, 2015*

**math**

59280?
*April 30, 2015*

**Math**

What is the ninth term of the following geometric sequence? a4=27 a7=64 a9=
*April 21, 2015*

**Physics**

At a given instant three electrons, in vacuum, happen to lie on a straight line. The first and second are separated by 3.00x 10-6 m, while the second and third are 8.00 10-6 m apart. What is the magnitude of the net electrostatic force on the middle electron, the second one?
*April 20, 2015*

**math**

Standard soft drink cans hold 12 ounce or 355 milliliters of soda. Assume that soda can must be right circular cylinders. Through trial and error with cans of different sizes, find the dimensions of a 12-ounce can that has the lowest cost for materials.
*April 19, 2015*

**Physics**

An unstable nucleus with a mass of 18.0 ✕ 10-27 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 10-27 kg, moves along the positive y-axis with a speed of 8.0 ✕ 106 m/s. Another particle, of mass 7.7 ✕ 10-...
*March 1, 2015*

**Physics**

A 4.1 g dart is fired into a block of wood with a mass of 20.2 g. The wood block is initially at rest on a 1.2 m tall post. After the collision, the wood block and dart land 2.6 m from the base of the post. Find the initial speed of the dart.
*February 28, 2015*

**saftet**

I have 5 words theres 25 letters. About saftey. Etadprlbaselsspsfnniltria
*February 11, 2015*

**math**

if a car passes mile marker 2 in 4 hours and a mile marker 125 in 6 hours, how many miles per hour is the car traveling?
*February 2, 2015*

**maths lit,business studies,life science economics**

You can study paramedics or police
*January 20, 2015*

**trigonometry**

a surveyor 1standing on a highway observed the angle of elevation of the airplain as 22.5°. at the same time, a surveyor 2 observed the angle of elevation of the same airplane to be 30°. if the airplane was 850m directly above a point on the highway, find the distance ...
*January 12, 2015*

**math**

If a plant grew 1 1/4 inches in one month. If the plant grows at the same rate, how many inches will it have grown at the end of 3 1/2 months?
*December 27, 2014*

**finance**

the joseph company has a stock issue that pays a fixed dividend of 3.00 per share annually. Investors believe the normal rik-free rate is 4 percent and that this stock is 14 percent,and that this stock should have a risk premium of 6 percent
*November 14, 2014*

**math**

4.5 by 6.12 original drawing want to increase size to 18 by 24. How do I do it?
*October 21, 2014*

**7th grade LA**

I don't understand why sentence #7 is correct. Shouldn't it be a compound -complex. " Although it was cold and the rain was getting heavier, we decided to go fishing as planned. Dependent: Although it was cold. Independent: the rain was getting heavier indepdent: ...
*October 15, 2014*

**English**

measurable
*September 24, 2014*

**Math**

Solve the equation: 4/3y+5/2y = 1
*August 23, 2014*

**algebra**

Simplify and show steps: 5x^2/x^3-x^2
*August 23, 2014*

**Math**

How do I simplify -4(-5x-u)-2(3u-2x)
*July 13, 2014*

**Math**

what is -4 (-w+4x-2)?
*July 13, 2014*

**Math**

what is 5 - / 8 6
*July 13, 2014*

**Kirr**

$1200.00
*June 1, 2014*

**statistics**

in a positive skewed distrubtion with a mean (average) of 100 and median of 90 is What?
*May 29, 2014*

**Stats**

Need help finding the area under the normal curve between z = -1.0 and z = -2.0?
*April 16, 2014*

**chemistry**

I don't know I copied the question word for word. He wants to know what was produced and percentage changes. I'm sorry
*April 15, 2014*

**chemistry**

There are two different oxides of copper produced as a result of this reaction. They are copper(I) and copper(II) oxide. If copper is changed to copper(I) oxide the percentage changed in mass is 12%. If copper is changed to copper(II) oxide the percentage change in mass is 25...
*April 15, 2014*

**math**

3/8 of a box contains 18 crackers how many crackers are in a box
*April 10, 2014*

**Statistics**

If a company’s total fixed costs increased by $20,000 and its contribution margin decreased by $12,000, net income would be?
*April 10, 2014*

**Science**

a d a a
*March 3, 2014*

**math**

3x+2x+y+2y
*February 17, 2014*

**physics**

A 45.4 kg sign is hanging in two wires as illustrated below. If angle A is 53.5 degrees and angle B is 29.6 degrees, what is the tension in the left wire? Give your answer in newtons
*February 16, 2014*

**Math**

is zero
*January 29, 2014*

**math**

A die is tossed twice. What is the probability of obtaining 6 dots both times?
*January 18, 2014*

**statistics**

A lottery uses 4 urns containing chips 0 to 9. One chip is selected at random from each urn. How many sample points are in the sample space?
*January 18, 2014*

**algebra 2**

if a system of equations has no solution then it is what?
*December 19, 2013*

**fin**

As part of a new labor contract, Acme has agreed to make a one-time contribution of Euros 1,000,000 to the construction of a new physical fitness facility for its employees. This amount will be placed in an account earning E% (E = the fifth digit of SUN). When the account ...
*December 12, 2013*

**business**

Access: When importing and linking data, what program is used to store data and what program is used to analyze it?
*December 4, 2013*

**geometry**

A flagpole has a height of 10 yards. It will be supported by three cables, each of which is attached to the flagpole at a point 4 yards below the top and attached to the ground at a point that is 8 yards from the base of the pole. Find the total number of feet of cable that ...
*November 26, 2013*

**math**

How do I factor non-traditional math problems that contain symbols? The examples given were: $q + $8 - $~ and 7* - x* + 2*.
*November 8, 2013*

**anatomy**

the lungs are lateral to the heart?
*September 23, 2013*

**algebra**

A parallelogram is 22 inches long and 14 inches wide. How do you find the height of the parallelogram? How do you find the area of the parallelogram ?
*September 21, 2013*

**Algebra, HELP!**

SOLVE FOR p: 5T = 6D + 6pm
*September 3, 2013*

**Algebra**

Got it! Y= x(x-2)
*August 21, 2013*

**Algebra**

What is the rule for the function x= 4, 5, 6, 7, 8 y= 8, 15, 24, 35, 48
*August 21, 2013*

**Math**

Sam is making 3 picture frames with dimensions seven and seven-eights and five and three quarters. What length of wood does he need for all 3 picture frames? Please answer as soon as possible; need it for tomorrow. Thanks
*May 22, 2013*

**life orientation**

recommendations on how to address pollution
*April 26, 2013*

**Algebra**

X^2(y-7)-14x(y-7)+45(y-7)
*April 3, 2013*

**Statistics and Probability**

Why is a normal distribution called "normal"?
*March 19, 2013*

**Statistics and Probability**

Why is a normal distribution called "normal"?
*March 19, 2013*

**biology**

−C−H−− −N−−−H −O−H−−
*March 12, 2013*

**Math Word Problem**

Tristen mixes nuts that cost $2.00 per pond with nuts that cost $4.00 per pound. He buys triple as much of the $2.00 per pound nut than he buys of the $4.00 per pound nut. If he spent a total of $32.00, how many pounds of the $2.00 per pound nut did he buy?
*February 11, 2013*

**MATH**

A camping store put in an order for flashlights and sleeping bags. The number of flashlights ordered was 3 times the number of sleeping bags. The flashlights cost $12.00 each, and the sleeping bags cost $45.00 each. If the total cost for the flashlights and the sleeping bags ...
*February 11, 2013*

**Statistics- HELP!**

2. The Rathburn Manufacturing Company makes electric wiring, which it sells to contractors in the construction industry. Approximately 900 electric contractors purchase wire from Rathburn annually. Rathburn's director of marketing wants to determine electric contractors&#...
*February 11, 2013*

**mATH**

First graders who misbehave in school may be more likely to be regular smokers as young adults according to a new study presented in the July 2004 issue of the American Journal of Epidemiology. After following a group of U.S. first graders for 15 years, it was found that among...
*February 11, 2013*

**Probability Help!!!**

5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
*February 10, 2013*

**Math-Statistics**

An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
*February 10, 2013*

**Math Probability**

5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
*February 10, 2013*

**Statistics**

An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
*February 9, 2013*

**Statistics**

5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
*February 9, 2013*

**Probability**

5 selected from batch of 50 produced, if one is found defective, than each is tested individually. Find the probability that the entire batch will need testing if the batch contains: 8 defective phones 2 defective phones
*February 9, 2013*

**Probability**

An advisor offers 8 mutual funds in the high risk category, 7 moderate, 10 in low risk. The investor decides to invest in 3 high risk, 4 moderate risk, and 10 low risk. How many ways can he do this?
*February 9, 2013*