Wednesday

May 27, 2015

May 27, 2015

Total # Posts: 336

**Chemistry**

Give the molecular formula for the following: 1)Methoxy methane 2) Methoxy Ethane 3) Ethoxy ethane
*May 24, 2015*

**English**

passionate and opinionated
*May 22, 2015*

**Calculus**

Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2), with x ≠ 2. a.Find all values of x where the graph of g has a critical value. b.For each critical value, state whether the ...
*May 8, 2015*

**Physics**

If ∆Q is the heat supplied to a gas so that the internal energy of the system increases by ∆U, then the work done ∆W by the gas is equal to: ∆Q – ∆U ∆Q + ∆U ∆Q x ∆U ∆U/∆Q
*May 8, 2015*

**Calculus**

The local linear approximation of a function f will always be greater than or equal to the function's value if, for all x in an interval containing the point of tangency f '(x) < 0 f '(x) > 0 f "(x) < 0 f "(x) > 0
*May 7, 2015*

**Calculus**

If f is a function such that [(f(b)-f(a))/(b-a)]=2 , then which of the following statements must be true? a.f(a) = f(b) = 2 b.The slope of the tangent line to the function at x = a is 2. c.The average rate of change of the function on the interval [a, b] is 2 d.The linear ...
*May 7, 2015*

**Calculus**

True or False If f is continuous at x = c, then f is differentiable at x = c.
*May 7, 2015*

**Calculus**

The local linear approximation of a function f will always be greater than or equal to the function's value if, for all x in an interval containing the point of tangency f '(x) < 0 f '(x) > 0 f "(x) < 0 f "(x) > 0
*May 7, 2015*

**POLS210 D001**

Please I am in desperate need of finding the answer to pop quiz 4,6,and 8 please is there anyone out there that could help me.
*April 22, 2015*

**Statistics**

Suppose a random family of four is selected (two parents and two children). Suppose further that you are told one of the two children is a girl. Given that this family has at least one daughter, what is the conditional probability that it also has a son? (HINT: write out the ...
*April 19, 2015*

**Elementary Statistics**

10. In a game of “chuck a luck” three dice are rolled. If your number comes up on all three dice you win $3. If your number comes up on two dice you win $2. If your number comes up only once you win $1. If your number doesn’t come up at all you lose $1. a) What ...
*April 19, 2015*

**math**

This is a continuous from my last question Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2) with x ≠ 2. On what intervals is the graph of g concave down? Justify your answer. ...
*March 18, 2015*

**math**

Let g be a function that is defined for all x, x ≠ 2, such that g(3) = 4 and the derivative of g is g′(x)=(x^2–16)/(x−2) with x ≠ 2. Find all values of x where the graph of g has a critical value. For each critical value, state whether the graph of...
*March 16, 2015*

**math**

True or false? If f is continuous at x = c, then f is differentiable at x = c.
*March 11, 2015*

**math**

Which of the following is the best linear approximation for f(x)equals sin(x) near x equals =π seconds? y=-x+pie-1 y=-1 y=-x-pie y=-x+pie
*March 11, 2015*

**Math**

What is the answer to ( what is the combined height of 3 nickels, 2 nickels, and 1 nickel?
*March 10, 2015*

**Calculus**

For which pair of functions f(x) and g(x) below will the lim f(x)/g(x)equal 0 x-infinity f(x) e^x; g(x) = x^3 f(x) x^5; g(x) = e^x f(x) x^3; g(x) = ln(x) f(x) x^negative 2; g(x) = e^negative x
*March 10, 2015*

**math**

The height of a cylinder with a fixed radius of 10 cm is increasing at the rate of 0.5 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 30cm.
*March 9, 2015*

**math**

A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = (x^2)h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 10 cm, the edge length of the base is ...
*March 9, 2015*

**math**

Is the answer 5?
*March 6, 2015*

**math**

A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s(t)equals = 5cos(t) minus- sin(3t), measured in feet. What is the acceleration of the particle at time t =equals π seconds?
*March 6, 2015*

**math, physics**

The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) equals 60t minus - 1.5t^2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop?
*March 6, 2015*

**math**

Would the answer be 2000 to this? with 1,200 i got 4,000? If 600cm^2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters.
*March 6, 2015*

**Math**

If 1,200 cm^2 of material is available to make a box with a square base and an open top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter.
*March 6, 2015*

**Math**

A farmer has 2,400 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence along the river. Write the function that will produce the largest area if x is the short side of the rectangle.
*March 5, 2015*

**Math**

What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y equals= 12 minus x^2?
*March 5, 2015*

**Math**

Thank you!
*March 5, 2015*

**Math**

provide one of the two positive integers whose sum is 200 and whose product is a maximum.
*March 5, 2015*

**Calculus**

1) A rectangular page is to contain 16 square inches of print. The page has to have a 2-inch margin on top and at the bottom and a 2-inch margin on each side. Find the dimensions of the page that minimize the amount of paper used. 2) A rectangular garden of area 480 square ...
*March 5, 2015*

**Problem Solving**

Michael has designated 5% of his paychecks for the year for presents (birthday, Monther's day, etc.) Write a solution to calculate the amount of money he can spread give the amount of money he earns.
*February 28, 2015*

**math**

Nicole is making a bowl of chex mix to serve her guests.She has already put 45 cups of nuts.410 cups of raisins and 112 cups of chocolate chips in the bowl,If she wants to make four cups total, how much chex cereal will she need to add?
*February 9, 2015*

**pre calculus **

12. Use the remainder theorem to find P (-2) for P(x) =x^3+2x^2-x-7. Specifically, give the quotient and the remainder for the associated division and the value of P (-2). Quotient =? Remainder =? P (-2) =?
*January 30, 2015*

**1210 Math**

A projectile follows a parabolic path whose height, in meters, is given by the function f(x) =-x^+2x+2, find the maximum horizontal distance that the projectile may cover
*November 16, 2014*

**algebra**

solve the equation for x -2(2x-2)=2x for y 9x+y=9 solve theinequality 2x-6<8x+18 solve 0.14-0.01(x+2)=-0.02(3-x)
*November 8, 2014*

**math**

Given: 20,000 shares cumulative preferred stock ($2.25 dividend per share): 40,000 shares common stock. Dividends paid: 2013, $8,000; 2014, 0; and 2015, $160,000. How much will the preferred stockholders and the common stockholders receive each year?
*October 21, 2014*

**CHEMISTRY**

what do you observe on the seawater where ships dock? Explain in relation with attractive forces and surface tension..
*October 7, 2014*

**trig**

I really have no idea how to find the theta of the angles, help please
*October 6, 2014*

**trig**

The centers of two belt pulleys, with radii of 3 cm and 6 cm, respectively, are 13 cm apart. Find the total area K enclosed by the belt.
*October 6, 2014*

**Math 114**

I have x=58.8
*August 26, 2014*

**Math 114**

a store mixes kenyan coffee worth $11 per kilogram and turkish coffee worth $13 per kilo gram. The mixture is to sell for $12 per kilogram. Find how much of each should be used to make a 588 kilo mixture.
*August 26, 2014*

**maths**

A car and a van started from two cities at the same time and travelled towards each other at steady speeds. The car took 4 hours to cover the distance between the two cities and the van took 6 hours. After what amount of time did they pass each other? 4.
*June 12, 2014*

**chemistry**

If 5.6 grams of potassium hydroxide is added to enough water to make 950 ml of solution, what is the concentration of the potassium?
*June 1, 2014*

**alegbra**

Use a calculator to evaluate an ordinary annuity formula A = m [ 1+ r over n ^nt -1] than rn is under--____________________ r over n for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) $150; 6%; 40 yr A = $
*May 12, 2014*

**alegbra**

Find the future value, using the future value formula and a calculator. (Round your answer to the nearest cent.) $990 at 5.5% compounded quarterly for 3 years Find the present value, using the present value formula and a calculator. (Round your answer to the nearest cent.) ...
*May 12, 2014*

**alegbra**

The learning curves describes the rate at which a person learns certain tasks. If person sets a goal of typing N words per minute (wpm), the length of time t (in days) to achieve this goal is given by a) according to this formula what is the maximum number of words per minute...
*May 11, 2014*

**alegbra**

Write the equations in logarithmic form. 25=(1/5)^2 thanks for the help.
*May 11, 2014*

**alegbra**

An artifact was found and tested for its carbon-14 content. If 75% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.) thank you
*May 11, 2014*

**ALGEBRA**

t = - 6.25 In ( 1 N over 80) according to the formula what is the maximum number of word per minute. Round off to the nearest whole number. Solve N
*May 11, 2014*

**ALGEBRA**

the atmosphere pressure P in pounds per square inch (psi) is given by P=14.7e upper o.21a where a is the attitude above sea level in miles. If a city has an atmosphere pressure y 13.29 psi what is its altitude. Recall that one mile = 5,280 feet. Round to the nearest feet
*May 11, 2014*

**math trigonometry**

At night, a security camera pans over a parking lot. The camera is on a post at point a which is 53m from point c and 71 m from point b.the distance from B to c is 68m. Calculate the angle through which the camera pans
*April 14, 2014*

**math trigonometry**

At night, a security camera pans over a parking lot. The camera is on a post at point a which is 53m from point c and 71 m from point b.the distance from B to c is 68m. Calculate the angle through which the camera pans
*April 14, 2014*

**math**

Maya chatted online with all her friends for 2/3 of an hour on saturday and 1/4 of an hour on sunday.During that time period she chatted with Paul for 1/8 of an hour. What fraction of the time Maya spent chatting with her friends online was spent chatting with Paul?
*April 13, 2014*

**PHYSICS**

100turns of insulated wire are wraped around a wooden cylindrical core of cross-sectional area 12cm2. The two ends of the wire are connected to a resistor. The total circuit resistance is 13Ω. If an externally applied uniform magnetic field along the core changes from 1....
*April 9, 2014*

**Physics**

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 8.2cm from the solenoid's axis
*April 9, 2014*

**physics**

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 2.2cm from the solenoid's axis (so at a point inside the ...
*April 7, 2014*

**physics**

100turns of insulated wire are wraped around a wooden cylindrical core of cross-sectional area 12cm2. The two ends of the wire are connected to a resistor. The total circuit resistance is 13Ω. If an externally applied uniform magnetic field along the core changes from 1....
*April 7, 2014*

**physics**

A long, ideal solenoid has a diameter d=12cm and n=1200turns/meter carrying current I=20A. If the current is lowered at 4.33amp/s to zero, what is the magnitude of the induced electric field in V/m at a position 8.2cm from the solenoid's axis (so at a point outside the ...
*April 7, 2014*

**physics HELP**

is the radius of the cable or of the axis to the point p?
*April 7, 2014*

**Math**

There are boxes without tops. Find the box with the least surface area for a given volume, V. Make a diagram (if you can). Hint: Volume=x^2y Area=x^2+4xy
*February 22, 2014*

**math**

The base of the lamp of a triangular prism with an equilateral triangle base . The surface of the stand is to be painted.what is the area that will be painted?Give the answer to the nearest whole number.
*February 19, 2014*

**Calculus I**

If x^2+y^2=25, find dy/dt when x=3 and dx/dt= -8.
*February 12, 2014*

**Calculus I**

Let A be the area of a circle with radius r that is increasing in size with respect to time. If the rate of change of the area is 8 cm/s, find the rate of change of the radius when the radius is 3 cm.
*February 11, 2014*

**Chemistry**

55cm
*January 26, 2014*

**Chemistry**

If each balloon is filled with carbon dioxide at 20 deg. C and 1 atmosphere, calculate the mass and the number of moles of carbon dioxide in each balloon at maximum inflation.
*January 26, 2014*

**math**

Bianca and yoko work together to mow the lawn suppose yoko mows 5/12 of the lawn and bianca mows 2/5 of the lawn how much of the lawn still needs to be mowed?
*January 15, 2014*

**math**

On a sunny day, if a 36-inch yardstick casts a 21-inch shadow,how tall is a building whose shadow is 168 ft ?
*December 2, 2013*

**math**

thank you, ms sue, the other question can i do the same way like this x/36 = 168/21 21x = 6048 x = 288
*December 2, 2013*

**math**

Oregon is about 400 miles from west to east, and 300 miles from north to south. If a map of Oregon is 15 inches tall ( from north to south), about how wide is the map?
*December 2, 2013*

**math**

Space the length of one day on venus is 35 earthdays write a product and an exponent .
*October 10, 2013*

**poetry**

The poem is: Canada Day Love Match My mother stalked her future son in law, convinced he was the one for me. Through the crowd at the Forks Market, she kept behind him like a cat ready to pounce. I kept out of his line of sight. Blind to us, he watched other women. Red turban...
*October 7, 2013*

**poetry (Pioneer by Dorothy Livesay)**

8 cannot be D because none of the words rhyme. It also does not ask questions. I will go with A. Does that seem right?
*October 7, 2013*

**poetry (Pioneer by Dorothy Livesay)**

Would number 8 be C ? I think 4 would be D because I don't think the pioneer will retire. I'm confused between B and D. Thanks for your help :)
*October 7, 2013*

**poetry (Pioneer by Dorothy Livesay)**

I have corrected the answers 1. A 4. A 5. C 7. B Do they seem right now?
*October 7, 2013*

**poetry (Pioneer by Dorothy Livesay)**

I have to answer the questions according to this poem, I have answered them but just want someone to look over them to see if they are right. The last one I had trouble with and need help on that one too. The answer that I think it is I have put arrows on them. Help would be ...
*October 7, 2013*

**poetry**

The poem is: Canada Day Love Match My mother stalked her future son in law, convinced he was the one for me. Through the crowd at the Forks Market, she kept behind him like a cat ready to pounce. I kept out of his line of sight. Blind to us, he watched other women. Red turban...
*October 6, 2013*

**Finance**

Explain how a firm that has issued a floating-rate bond with a coupon equal to the LIBOR rate can use swaps to convert that bond into a synthetic fixed-rate bond.
*October 5, 2013*

**math**

The price of a sweater went up 20% since last year . If last year's price was x, what is this year's price in terms of x?
*August 27, 2013*

**math**

please explain how you got 1.2x
*August 27, 2013*

**math**

The price of a sweater went up 20% since last year.If last year's price was x what is this year's price in terms of x?
*August 27, 2013*

**math**

thank you
*July 13, 2013*

**math**

A. John is now 10 years older than Marcus. Three times John's age 5 years from now will be the same as five times Marcus's age 5 years ago. How old is John now? B. In 1 year Kristen will be four times as old as Danielle. Ten years from then Kristen will only be twice ...
*July 13, 2013*

**math**

A. A woman was 30 years old when her daughter was born.Her age is now 6 years more than three times her daughter's age. How old will the daughter be in 5 years? B. Lisa is 15 years old and her father is 40. How many years ago was the father six times as old as Lisa? C. ...
*July 13, 2013*

**math**

A. Brad is 12 years older than Sam . If Brad were 8 years older than he is now. he would be twice as old as Sam. How old is Sam now? B. Barrie is now 2 years older than Krista. In 15 years Barrie's age will be 2 years more than twice Krista's age now. How old will ...
*July 13, 2013*

**math**

D. ( x + x+1 + x+2 )/3=84
*July 13, 2013*

**math**

the number B (?) four consecutive odd integers (X + X+2 + X+4 + X+6 ) /4 = 16 I'm not sure
*July 13, 2013*

**math**

A. Four times one odd integer is 14 less than three times the next even integer. Find the integers. B. The average of four consecutive odd integers is 16. Find the largest integer. C. When the sum of three consecutive integers is divided by 9 the result is 7. Find the three ...
*July 13, 2013*

**math**

A. One board is one-third the length of another. Six times the sum of the length of the short board and -10 is equal to the length of the longer board decreased by 11 inches. Find the length of the longer board. B. The length of a rectangle is 4 feet more than twice the width...
*July 11, 2013*

**math**

A. In triangle, the second angle measures twice the first, and the third angle measures 5 more than the second. If the sum of the angles' measures is 180^0, find the measure of each angle. b. The price of a pack of gum today is 63 cent. This is 3 cent more than three times...
*July 10, 2013*

**math**

1. A hotel has 120 rooms. If the number of double room is 8 more than three times the number of single rooms, how many single rooms does the hotel have? 2. A mechanic earns $5 more per hour than his helper. On a six-hour job the two men earn a total of $114. how much does each...
*July 9, 2013*

**math**

I have two more question, I hope you can help me. 1. A hotel has 120 rooms. If the number of double room is 8 more than three times the number of single rooms, how many single rooms does the hotel have? 2. A mechanic earns $5 more per hour than his helper. On a six-hour job ...
*July 8, 2013*

**math**

thank you for help
*July 8, 2013*

**math**

4. The perimeter of a tgriangle is 44 inches. If one side is 5 inches longer than the smallest side and the largest side is 1 inch less than twice the smallest side, how many inches are there in the smallest side?
*July 8, 2013*

**math**

1. The sum of the ages of Ed and his father is 59 years. If his father's age is 11 years less than four times Ed's age, how old is Ed? 2. Five less than seven times a certain number is 58.Find the number. 3. The sum of 1/2 a certain number and 1/3 of the same number is...
*July 8, 2013*

**physics**

A boat sails 5.0(45 degrees W of N). It then hanges direction and sails 7.0km(45 degrees S of E) where does the boat end up with reference to its starting point.? Please explain steps answer is 2km(45 degrees S of E)
*July 4, 2013*

**Business**

In the following statement, a business owner attempts to explain and justify his slow growth in his business. I limit my growth pace and every effort to service my present customers in the manner they deserve. I have some peer pressure to do otherwise by following the advice ...
*June 6, 2013*

**math**

1. solve the following inequality to find a range of values for x: -11 < -4-x < -7 2. solve the following inequality to find a range of values for x: -25 < -x < -10
*March 13, 2013*

**math**

1. solve the following inequality to find a range of values for x: -11 < -4-x < -7 2. solve the following inequality to find a range of values for x: -25 < -x < -10
*March 13, 2013*

**math**

thank you, Dr. Jane Can i ask two more question 1. solve the following inequality to find a range of values for x: -11 < -4-x < -7 2. solve the following inequality to find a range of values for x: -25 < -x < -10
*March 13, 2013*

**math**

1. solve the following inequality to find a range of values for x : -18 < x -7 < -6 2. solve the following inequality to find a range of values for x : -96 < -12x < -12
*March 13, 2013*

**math**

1. 19cd , + 6d^2 , + 8 , 19cd 6d^2
*March 7, 2013*