Saturday

April 30, 2016
Total # Posts: 784

**Applied Calculus**

A truck gets 800/x miles per gallon (mpg) when driven at a constant speed of x mph, where 40 ≤ x ≤ 80. If the price of fuel is $2.80/gal and the driver is paid $19/hr, at what speed is it most economical for the trucker to drive? (Round your answer to two decimal ...
*March 15, 2013*

**algebra**

a farmer has both cickens and cattle.These animals have a total of 40 heads and 140 feet.How many chicken and how many cattle has this farmer
*March 15, 2013*

**Science**

Two children, m1 = 50 kg and m2 = 55 kg, and a plastic sled of mass 35 kg start at rest and slide for 5.0 s down a hill. The force of gravity pulling the children and sled down the hill is 470 N but the snow provides a frictional force of 325 N. At the bottom of the hill, the ...
*March 13, 2013*

**Science**

Two children, m1 = 50 kg and m2 = 55 kg, and a plastic sled of mass 35 kg start at rest and slide for 5.0 s down a hill. The force of gravity pulling the children and sled down the hill is 470 N but the snow provides a frictional force of 325 N. At the bottom of the hill, the ...
*March 13, 2013*

**Applied Calculus**

I had to miss my last week of Calculus due to some personal things, so I had not been through any lectures of optimization. It hurt me greatly, now I have a few of these that I don't know how to set up at all.
*March 13, 2013*

**Applied Calculus**

A rectangular box is to have a square base and a volume of 50 ft3. The material for the base costs 32¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 26¢/ft2. Letting x denote the length of one side of the base, find a function...
*March 13, 2013*

**Applied Calculus**

If an open box has a square base and a volume of 112 in.3 and is constructed from a tin sheet, find the dimensions of the box, assuming a minimum amount of material is used in its construction. (Round your answers to two decimal places.) Height: Length: Width:
*March 12, 2013*

**Applied Calculus**

If an open box is made from a tin sheet 7 in. square by cutting out identical squares from each corner and bending up the resulting flaps, determine the dimensions of the largest box that can be made. (Round your answers to two decimal places.) Height: Length: Width:
*March 8, 2013*

**Applied Calculus**

Find the absolute maximum and absolute minimum values, if any, of the function. (If an answer does not exist, enter DNE.) h(x) = x3 + 3x2 + 4 on [−3, 2]
*March 6, 2013*

**Applied Calculus**

Find the relative extrema, if any, of the function. Use the Second Derivative Test if applicable. (If an answer does not exist, enter DNE.) g(x)=x^(3)-9x
*March 3, 2013*

**Applied Calculus**

Let f(x) = x3 − 4x2. Find the point(s) on the graph of f where the tangent line is horizontal.
*March 1, 2013*

**Applied Calculus**

Let f(x) = −x2 + ax + b. Determine the constants a and b such that f has a relative maximum at x = 2 and the relative maximum value is 13.
*February 27, 2013*

**Applied Calculus**

Find the third derivative of the function: g(t)=square root of 7t+5
*February 27, 2013*

**Applied Calculus**

Find the third derivative of the function: g(t)=square root of 7t+5
*February 27, 2013*

**math**

the riddle answer i got was "try sports tho>' it seems wrong ?
*February 26, 2013*

**math**

where did you get 160?
*February 26, 2013*

**math**

wait is it 3?
*February 26, 2013*

**math**

i dont get how to set it up. i know how to do the math.
*February 26, 2013*

**math**

i got 308?
*February 26, 2013*

**math**

in science class, there is enough chemical solution for 154 students to complete 12 labs. if 6 more students enroll, for how many labs will there be enough chemical?
*February 26, 2013*

**math**

a map in history class uses a scale of 1 inch=50 miles. a line measuring 3/4 inch long represents how many miles?
*February 26, 2013*

**math**

the geometry teacher has enough chalk to last for 16 proofs in each of three classes. if a fourth class is added, how many proofs per class can she now do?
*February 26, 2013*

**math**

there word problems
*February 26, 2013*

**math**

if i asked on here then, i dont know hw to do it..so i need the riddle to see how to get the answers
*February 26, 2013*

**math**

what should you do if at first you dont succeed? its a riddle and the letters are y,t,o,r,h,p,s
*February 26, 2013*

**Applied Calculus**

If the line passing through the points (a, 1) and (−8, 7 is parallel to the line passing through the points (−11, 8) and (a + 2, 1), what is the value of a?
*February 25, 2013*

**Applied Calculus**

Find the x-value of the relative minima of the function: 2x^(2)+((256)/(x))+8
*February 25, 2013*

**Chemistry**

What is(are) the precipitate(s) that form when K2SO4, BaCl2, and AgNO3 solutions are mixed?
*February 23, 2013*

**Applied Calculus**

Use differentials to approximate the quantity (give answer to 4 decimal places) 4th root of 256.6.
*February 21, 2013*

**geometry**

did you hear about... it says its supposed to be a novel.. my words are robins, because,rooster,so,name,sun,best,the,was,banks,gave,wrecked,robinson,farmer,crew,he,who,pet,the,his. it's 13 boxes long.
*February 20, 2013*

**geometry**

Did you hear about...(it says it would be a novel name)
*February 20, 2013*

**Applied Calculus**

Find the third derivative of the function: (5t+4)^(1/2)
*February 20, 2013*

**Applied Calculus**

Find the first and second derivative of the function: x/(7x+10) Using quotient rule. This is part of my homework in the section named "Higher Order Derivatives". I am confused on getting the second derivative, as I found the first derivative to be 10/(7x+10)^2
*February 20, 2013*

**Applied Calculus**

Yeah, I was forgetful and forgot it was the Quotient Rule. Thank you all, I got it!
*February 18, 2013*

**Applied Calculus**

Find the derivative of the function: (x^(3)-8)/(x^(2)+9)
*February 18, 2013*

**Applied Calculus**

Find the derivative of this function: g(t)=(8t+10)^2*(10t^2-7)^-3 Using the Chain Rule.
*February 15, 2013*

**Applied Calculus**

Find the derivative of the function. g(t) = ((8t + 10)^2)*(((10t^2) - 7)^-3) I am supposed to use The Chain Rule. However, I am confused as to how to do this.
*February 14, 2013*

**Excel**

What are the symbols I would use in Excel for each of the following Comparison Operators? "At Least" --> "More Than" --> "X Or Higher" --> "X Or Less" --> "Not More Than" --> "At Most" -->
*February 13, 2013*

**Applied Calculus**

Yeah, what I accidently did was I tried to solve it further, but I completely over thought that. Thank you Bob!
*February 11, 2013*

**Applied Calculus**

Find the derivative of the function: f(x)=(x^2+9)/square roote of x
*February 11, 2013*

**Applied Calculus**

Find the derivative of the function f by using the rules of differentiation. f(x)=340
*February 11, 2013*

**Science!**

How many grams of NH3 gas can be made if 42.0 g of N2 gas and 12.0 g of H2 gas react with each other? N2 + 3 H2 ↔ 2 NH3
*February 11, 2013*

**math**

Jerome is 1.5 meters tall, and at a certain time of day, he casts a shadow that is 2 meters. His friend measures the shadow formed by a nearby flagpole at the same time of day and finds it to be 24 meters. What is the height of the flagpole?
*February 8, 2013*

**Applied Calculus......**

Rewrite the expression using positive exponents only. (Simplify your answer completely.) (x^3-y^3)(x^-3+y^-3)
*February 8, 2013*

**Applied Calculus......**

Under a set of controlled laboratory conditions, the size of the population of a certain bacteria culture at time t (in minutes) is described by the following function. P=f(t)=3t^2+2t+1 Find the rate of population growth at t = 9 min.
*February 7, 2013*

**Applied Calculus......**

Find the slope m of the tangent line to the graph of the function at the given point and determine an equation of the tangent line. f(x)=6x-5x^2 at (-2, -32) I have to use the four step process, but seem to be getting stuck...
*February 7, 2013*

**Math**

A copy machine makes 60 copies per minute. A second copy machine makes 80 copies per minute. The second machine starts making copies 2 minutes after the first machine starts. Both machines stop making copies 8 minutes after the first machine started. Together, the 2 machines ...
*February 6, 2013*

**Accounting**

The business was started on April 1st. I have the following events that happened: what accounts should I debit and credit? 1. Incurred advertising expense of $1,907 on account. 2. Hired park manager at a salary of $3,783 per month, effective May 1. 3. Sold 140 coupon books for...
*February 6, 2013*

**Accounting**

The business was started on April 1st. I have the following events that happened: what accounts should I debit and credit? 1. Incurred advertising expense of $1,907 on account. 2. Hired park manager at a salary of $3,783 per month, effective May 1. 3. Sold 140 coupon books for...
*February 5, 2013*

**Physics**

The drawing shows six point charges arranged in a rectangle. The value of q is 8.07 μC, and the distance d is 0.430 m. Find the total electric potential at location P, which is at the center of the rectangle.
*February 5, 2013*

**Physics**

The drawing shows six point charges arranged in a rectangle. The value of q is 8.07 μC, and the distance d is 0.430 m. Find the total electric potential at location P, which is at the center of the rectangle.
*February 5, 2013*

**Physics**

The drawing shows six point charges arranged in a rectangle. The value of q is 8.07 μC, and the distance d is 0.430 m. Find the total electric potential at location P, which is at the center of the rectangle.
*February 5, 2013*

**Applied Calculus......**

Use the method of bisection to find the root of the equation x^5 + 3x − 7 = 0 accurate to two decimal places.
*February 4, 2013*

**Applied Calculus......**

Suppose a snowy-tree cricket chirps 180 times per minute if the temperature is 102 degrees, and chirps 120 times per minute when the temperature is 90 degrees. Construct a mathematical model that will predict the number of chirps per minute at a temperature in degrees ...
*February 3, 2013*

**english**

i need to write a historical narrative for school. it has to have dialogue and be in any persons viewpoint from the great depression and world war 2. it has to revolve around a specific climax or such. so i need some help coming up what to write about! thanks much.
*February 3, 2013*

**chem**

10.1
*February 1, 2013*

**Applied Calculus......**

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1/2 in. margins on the sides. She further stipulated that each page should have an area of 60 in.2. Find a function in the variable x, giving the area of the printed region.
*January 29, 2013*

**Percent word problem**

A pitcher holds 2 gallons of orange juice. The orange juice is made 20% concentrated juice and 80% water. How much water is used in the orange juice?
*January 18, 2013*

**Physics**

The patient in the figure below is to receive an intravenous injection of medication. In order to work properly, the pressure of fluid containing the medication must be 108 kPa at the injection point. (a) If the fluid has a density of 1024 kg/m3, find the height at which the ...
*January 15, 2013*

**Physics**

What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2? A. 0.25 N B. 49 N C. 196 N D. 748 N
*January 15, 2013*

**floral disign**

what is the most effective way for you to locate growers to supply your design needs
*January 10, 2013*

**math**

I 1, 2, 4, 8, OR 10
*January 9, 2013*

**Math**

I have to factor 15x^2+2x-24 How can I do this?
*January 3, 2013*

**Chemistry**

The half-life of hafnium-156 is 0.025 s. how long will it take a 560 g sample to decay to one-fourth it's original mass?
*December 11, 2012*

**Chemistry**

If the half life of Iodine-131 is 8.10 days, how long will it take for 120.0 g to decay to 7.50g?
*December 11, 2012*

**Chemistry **

Thallium-208 has a half life of 3.053 min. How long will it take for 120.0 g to decay to 7.50 g?
*December 11, 2012*

**Chemistry **

If 100.0 g of carbon-14 decays until only 25.0 g of carbon is left after 11,460 y, what is the half-life of carbon-14?
*December 11, 2012*

**History**

How did the Civil War affect the home front in the north and south?
*December 10, 2012*

**History (Industrial Revolution)**

Can you give me an outline of the Industrial Revolution?
*December 8, 2012*

**Calculus**

When an electronics store prices a certain brand of stereos at p hundred dollars per set, it is found that q sets will be sold each month, where q2 + 2 p2 = 41. a. Find the elasticity of demand for the stereos using implicit differentiation. b. For a unit price of p = 4 ($400...
*December 4, 2012*

**Calculus**

When an electronics store prices a certain brand of stereos at p hundred dollars per set, it is found that q sets will be sold each month, where q2 + 2 p2 = 41. a. Find the elasticity of demand for the stereos using implicit differentiation. b. For a unit price of p = 4 ($400...
*December 3, 2012*

**new mexico**

Kara drew a horizontal dashed line through the middle of a trapezoid parallel to the parallel sides.Did she create a line of symmetry?
*November 29, 2012*

**5th grade math**

i need help
*November 27, 2012*

**math**

2100
*November 27, 2012*

**math**

working on adding unlike fractions
*November 27, 2012*

**Physics**

Joe wishes to hang a sign weighing 730 N so that cable A, attached to the store, makes a 30.0° angle, as shown below. Cable B is horizontal and attached to an adjoining building. What is the tension in cable B?
*November 17, 2012*

**PLEASE HELP - DIVISORS PROB**

3/5
*November 15, 2012*

**Physics**

A shell is fired from the ground with an initial speed of 1.72 103 m/s at an initial angle of 40° to the horizontal. a) Neglecting air resistance find the horizontal range b) Find the amount of time the shell is in motion
*November 14, 2012*

**5th grade language**

In the following poem I need to know examples of assonance in lines 1-4 1. There once was a cowboy named Ray 2. Who never had that much to say 3. Except for the times 4. Stampedes stopped on a dime 5. When that cowboy named Ray hollered "hey"
*November 7, 2012*

**algebra 2**

factor the expression 2x^2+5x+3 I just dont understand and my teacher is not a good one
*November 6, 2012*

**Steve Math**

WHAT THE HECK IS THIS
*October 30, 2012*

**Math**

4/5 -7/5
*October 16, 2012*

**physics**

A block is released from rest at the top of an incline which makes a 30 degree angle with the horizontal. The incline is 12 m long and it takes the block 25 seconds to reach the bottom. What is the coefficient of kinetic friction, between the block and the incline?
*October 16, 2012*

**algebra**

I think it woul be 1400 tickets because you are only making 1 dollar per ticket and you are shelling out 2500 to workers and players subtract 1100 you have 1400 dollars you have to add.
*October 16, 2012*

**physics**

Sally applies a total force of 71 N with a rope to drag a wooden crate of mass 100 kg across a floor with a constant acceleration in the x- direction of a = 0.1 m/s2. The rope tied to the crate is pulled at an angle of = 50 relative to the floor. Calculate the ...
*October 13, 2012*

**algebra**

explain how to get answer and what is answer 14 times x to the power of 16 divided by 6 times x to the power of 11
*October 10, 2012*

**Language Art**

You can explore, with a minimal time commitment, an interest, hone a skill, or participate in an activity. If you rewrote sentence 3 beginning with With a minimal time commitment, the next words should be 1. to be exploring 2. you can explore 3. an interesting exploration 4. ...
*October 6, 2012*

**Algebra Word Plob..PLEASE HELP**

You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches long. How should you ...
*October 4, 2012*

**Earth Science**

Renewable resources can be replaced as fast as they are consumed? It is true or false?
*October 4, 2012*

**Earth Science**

How energy flows through the Earth's system.
*September 30, 2012*

**eath science**

is moon a source of earth's energy?
*September 30, 2012*

**woodlake hills/ science**

The car jose is examing has a mass of 25 grams. What is the destiny of the car?
*September 27, 2012*

**woodlake hills/ science**

Jose put 40 mL of water into a graduated cylinder. After addinga toy car, the water level in the cylinder rose to 65mL. What isthe volume of the toy?
*September 27, 2012*

**Physics**

A bear spies some honey and takes off from rest, accelerating at a rate of 2.3 m/s2.v If the honey is 18 m away, how fast will his snout be going when it reaches the treat?
*September 20, 2012*

**Physics II**

A teacher of 75.0 kg bungee-jumps (steps from rest) from a 100 m tower towards a river. The cord can stretch 40.0% of its unstrecthed length and has a breaking strength of 5000. N (if tension is greater than this, it snaps). The cord stretches .250 meters when a 10.0 kg weight...
*September 17, 2012*

**English**

Is this the thesis: "Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe to assure the survival and the success of liberty." ?
*September 10, 2012*

**English**

I have to analyze John F. Kennedy's inaugural address. I need to find the thesis, preview statement (forecasting or signposting), because statement (why the audience might be interested in listening), transitions, a restatement of thesis, and a clincher. Here is the text ...
*September 10, 2012*

**programming**

Draw a flowchart or write the pseudocode for an application that allows a user to enter price and computes 8 percent sales tax on the item. Use // declartions
*September 5, 2012*