Wednesday

October 7, 2015
Total # Posts: 1,203

**algebra1**

6 + x/-8 = 4/7 what does x =
*October 3, 2015*

**AP Calculus**

a norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window. find the dimensions of a norman window of maximum area if the total perimeter is 72 units. Base value is 21.
*October 1, 2015*

**Fire protection eng**

20,500 gallons of kerosene spill into a banked up area that measure 20 foot x 10 foot how long will the fire last it is left unattended ? 1 gallon = 3.785 liter 1000 liters = 1 m^3 1in = 2.54 cm 1ft = 12 in
*September 29, 2015*

**science**

so using an instrument to extend the power of an observation isnt itself an observation?
*September 25, 2015*

**science**

i put 2 on my test can u explain why its 2.
*September 25, 2015*

**science **

a student is observing a rock. which of the follwoinf is an observation 1. the rock is 55g in mass 2. the rock is over billions of years old
*September 25, 2015*

**Object oriented programming**

The Romance World Cruise Line provides special gifts for passengers who are newlyweds, as well as for those who have been married more than 40 years. Design a pseudocode for a program that accepts a couple's last name, ship cabin number, and number of years married. ...
*September 24, 2015*

**Programming**

What's the rest of the the pseudocode
*September 22, 2015*

**Programming**

What's the rest of the the pseudocode
*September 22, 2015*

**College Physics**

At a firing range, a target is placed 300 m from where someone is firing a rifle. The muzzle speed of this rifle is 700 m/s. If the rifle is aimed directly at the center of the target, by how far will the target miss? At what angle would the rifle need to be aimed at to hit ...
*September 14, 2015*

**Precal**

The velocity v of a fluid flowing in a conduit is inversely proportional to the cross- sectional area of the conduit.( Assume that the volume of the flow per unit of time is held constant .) Determine the change in the velocity of water flowing from a hose when a person places...
*September 10, 2015*

**Math**

The height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. When graphed, the function gives a line with a slope of −0.6 Suppose that the height of the candle after 19 hours is 9.6 centimeters. What was the height ...
*September 8, 2015*

**Math**

Are you going to wait the four hours until the quiz expires or do you have a plan B?
*September 7, 2015*

**JOb interview**

here are a few people in line waiting to be served. You are taking care of one customer and she insists you gave her the incorrect change. You know you didn't. What do you do?
*August 17, 2015*

**JOb interview**

here are a few people in line waiting to be served. You are taking care of one customer and she insists you gave her the incorrect change. You know you didn't. What do you do?
*August 17, 2015*

**JOb interview**

here are a few people in line waiting to be served. You are taking care of one customer and she insists you gave her the incorrect change. You know you didn't. What do you do?
*August 16, 2015*

**JOb interview**

Briefly explain why you feel you are the ideal candidate for this position.This field is mandatory
*August 16, 2015*

**JOb interview**

Please provide an example of your best customer service situation. Explain why the service you provided was so successful
*August 16, 2015*

**JOb interview**

here are a few people in line waiting to be served. You are taking care of one customer and she insists you gave her the incorrect change. You know you didn't. What do you do?
*August 16, 2015*

**alg1**

solve for 8m^2 +20m=12 for m by factoring
*August 5, 2015*

**Math velocity **

A ball is thrown straight up from the edge of the roof of a 60.0 m tall building. If a second ball is dropped from the roof 2.0 s later what must the initial velocity of the first ball be if both are to reach the ground at the same time?
*June 22, 2015*

**MATH URGENT**

find the average rate of change between f(-4) and f(-1) in the function f(x)= x^2+2x-8
*June 1, 2015*

**Calculus**

For f(x)=(1-x)/(1+x) and g(x)=x/(1-x) , find the simplified form for f [g(x)] and state the domain
*May 27, 2015*

**Calculus**

Use the table below to evaluate d/dx [f[g(2x)]] at x = 1 x 1 2 3 4 f(x) 6 1 8 2 f '(x) 6 1 8 2 g(x) 1 4 4 3 g '(x) 9 5 5 -4
*May 27, 2015*

**Calculus**

Which of the following functions is continuous at x = 5? I put a for my answer, could someone please check this? a. f(x)=(x^2-25)/(x+5) b. (x^2-25)/(x-5), x cannot equal 5 20 when x equals 5 c.(x^2-25)/(x-5), x cannot equal 5 0 when x equals 5 d. all of the functions are ...
*May 21, 2015*

**Calculus**

So would that mean that it is only the first one?
*May 20, 2015*

**Calculus**

Which of the following statements is/are true? I.If f '(c) = 0, then f has a local maximum or minimum at x = c. II.If f is continuous on [a, b] and differentiable on (a, b) and f '(x) = 0 on (a, b), then f is constant on [a, b]. III.The Mean Value Theorem can be ...
*May 20, 2015*

**Calculus**

The function's value will always be greater than or equal to the local linear approximation of a function f if, for all x in an interval containing the point of tangency, f " > 0 f " < 0 f ' > 0 f ' < 0
*May 20, 2015*

**Calculus**

The function's value will always be greater than or equal to the local linear approximation of a function f if, for all x in an interval containing the point of tangency, f " > 0 f " < 0 f ' > 0 f ' < 0
*May 20, 2015*

**Math**

Maya made a sign with area of 48 square centimeters. Use a centimeter grid paper to draw a shape that shows what her sign could look like?
*May 20, 2015*

**Science**

Check my answers pls
*May 19, 2015*

**Science**

1.A weatherman reports, “The storm waves are about 2 meters high and about 35 meters apart.” What properties of waves is the reporter describing? (1 point) A.frequency and wavelength B.wavelength and wave speed C.amplitude and wavelength D.amplitude and frequency 2. ...
*May 19, 2015*

**Statistics**

Scores on the Scholastic Aptitude Test form a ND with a mean of 500 and SD of 100 what is the minimum score necessary to be in the top 15% of the SAT distribution? Stuck on what to do on this question? Any answers?
*May 19, 2015*

**Calculus**

Find the x-coordinates of any relative extrema and inflection point(s) for the function f(x) = 3x^(1/3) + 6x^(4/3). You must justify your answer using an analysis of f '(x) and f "(x). I found the first and second derivative which i think is (8x+1)/(x^(2/3), and the ...
*May 18, 2015*

**Calculus**

The position function of a particle in rectilinear motion is given by s(t) s(t) = t^3 - 9t^2 + 24t + 1 for t ≥ 0. Find the position and acceleration of the particle at the instant the when the particle reverses direction. Include units in your answer.
*May 18, 2015*

**Calculus**

The table below shows the temperature (in °F) t hours after midnight in Phoenix on March 15. The table shows values of this function recorded every two hours. (10 points) a. Estimate the value of T'(6). Give units in your answer. b. What is the meaning of T'(6)? t ...
*May 15, 2015*

**Caclulus**

Find f'(x) for f(x) = ln(x^3 + e^(4x)). I got(4e^(4x)+3x^2)/(e^(4x)+x^3) Is that right?
*May 15, 2015*

**Caclulus**

Sorry it is sin^3(3x^2)
*May 15, 2015*

**Caclulus**

Find f'(x) for f(x) = sin3(3x2).
*May 15, 2015*

**science**

Is glycerol a fat, carbohydrate or protein?
*May 10, 2015*

**Math**

Given Perimeter of triangle is 26 inches. Side A is 3 inches longer than B. Side C is 1 inch shorter than twice side B
*May 10, 2015*

**algebra 1**

so im right?
*May 2, 2015*

**algebra 1**

Find the roots of y=x^2, axis of symmetry and vertex. I got roots: (0,0) axis of symmetry: minimum point x=0 vertex: (0,0)
*May 2, 2015*

**math**

Ryans limo drove 24 miles east and then drove 50 miles south How far is the limo from where he started round to nearest tenth
*April 29, 2015*

**Math**

A monopoly has a total cost function C = 1000 + 108x + 12x^2 for its product, which has demand function p = 324 − 3x − 2x^2. Find the consumer's surplus at the point where the monopoly has maximum profit. (Round your answer to the nearest cent.)
*April 22, 2015*

**english**

It was risky for Superman to announce that he could leap over a building in a single bound because he’d been really ashamed if he missed and went splat into the side of the building.
*April 17, 2015*

**Social studies**

9 is A
*April 16, 2015*

**physics**

A 4.0kg particle collides with a 6.0 kg particle that is at rest at 10m/s. What is the velocity of the particles after the collision
*April 13, 2015*

**Math (Please help ASAP)**

How do I solve this equation (q+p^2-33p=9) for the point of elasticity in terms of p? Thank you!
*April 8, 2015*

**physics **

a skier decides to ski down a hill inclined at 12 degrees to the horizontal. He pushes on his poles and starts to slide down the slope. If his initial speed after he stops pushing is 4.7 m/s and us= 0.28, how far will mr.grewal slide down the hill before coming to rest
*April 6, 2015*

**Physics**

If a ball is launched into the air vertically with a velocity of 20 m/sec, how fast will it be moving after two seconds? (The gravity's acceleration is rounded to 10 m/sec/sec.)
*March 26, 2015*

**Calculus **

Find the elasticity of the demand function: pq = 42 p=$2 My professor went through this lesson really fast and I would appreciate anyone's help in explaining it. Thank You
*March 25, 2015*

**Elasticity Demand Calculus **

Find the elasticity of the demand function: pq = 42 p=$2 My professor went through this lesson really fast and I would appreciate anyone's help in explaining it. Thank You
*March 25, 2015*

**Implicit Differentiation (Please HELP)**

Write the equation of the line tangent to the curve x^2 − 4y^2 + 192 = 0 at (8, 8) Thank You
*March 24, 2015*

**math**

Beans meal is 16% protein flour meal is 8% protein. How many pounds of each should be mixed together to get 32 pounds mixture that is 13% protein how many pounds of the flour meal should be in the mixture
*March 20, 2015*

**Math**

If the total cost function for producing x lamps is C(x) = 90 + 36x + 0.1x^2 dollars, producing how many units will result in a minimum average cost per unit? PLEASE EXPLAIN YOUR WORK Thank you
*March 9, 2015*

**Calculus Chain rule**

y = (6x^2-6)^4/x I would appreciate it more if work was shown. Thank you (I have the answer but want to know how to do it)
*February 25, 2015*

**physics**

what is the amount of force needed to move an object that has a mass of 2.0kg at an acceleration of 3.0m/s^2 with the force acting on the object at a 30 degree angle
*February 25, 2015*

**chemistry**

thanks for taking a look! :)
*February 24, 2015*

**chemistry**

How do I calculate the average Z molar mass, 1/n (Summation) of n*M given this data: (alternate equation: MZ=Summation N*M^3/Summation N*M^2) (Ave molar mass, mass of sample): (7.5,9.6) , (12.5,8.7), (17.5, 8.9), (22.5, 5.6), (27.5, 3.1), (32.5,1.7) mili moles for repective ...
*February 24, 2015*

**chemistry help!!**

How do I calculate the average Z molar mass, 1/n (Summation) of n*M given this data: (Ave molar mass, mass of sample): (7.5,9.6) , (12.5,8.7), (17.5, 8.9), (22.5, 5.6), (27.5, 3.1), (32.5,1.7) mili moles for repective numbers: 1.3,.7,.51,.25,.11,.052 TOTAL: 2.92 I don't ...
*February 24, 2015*

**physics/chemistry**

mistake, multiplying by 2 in the math is for a bubble and not a cavity >_>
*February 22, 2015*

**physics/chemistry**

how does one calculate the work done by a spherical bubble with radius r in a liquid with a surface tension of T. I understand for a cavity it is 8pi(r)T, would you just double it to get 16pi(r)T because there are 2 films? here's the math....2(4pi((r)+dr)^2 -4pir^2) for a ...
*February 22, 2015*

**Calculus Chain rule**

How did you get an exponent of 6??
*February 17, 2015*

**Calculus Chain rule**

How can derive this function?f(x) = 2/(9x^5+1)^5 The answer is The answer is -450x^4/(9x^5+1)^6 Can you please show why? Thank you
*February 17, 2015*

** Math**

Three eighths of the cast in a musical have to sing. What fraction of the cast does not have to sing?
*February 12, 2015*

**chemistry**

given relative permitivity of water, how much energy (kj/mol) is required to break the hydrogen bond in water? (Er=80.0)
*February 8, 2015*

**Vectors/Scalars?**

the dot product of 2 vectors is always a scalar. the difference between the two is that the scalar doesn't have direction, yes.
*February 8, 2015*

**chemistry**

how do I calculate the area occupied by one single molecule, given # of molecules per meter^2 (9.6e15), the Molarity? (.1 m/dm^3) and surface excess? (1.6e-8)
*February 8, 2015*

**phys chem**

how much energy (kj/mol) is required to break the hydrogen bond in water (Er=80.0) (Er= Relative permitivity) I'm really not sure how to approach this, and if i need enthalpies of vaporization or not...
*February 8, 2015*

**algebra**

A simple random sample is drawn from a normally distributed population. The value of which of the following will not be known for certain but can be inferred?
*February 5, 2015*

**math**

Nvm i got it right. it was 1.73
*February 2, 2015*

**math**

what numbers when you multiply together give you a product of -3 and a sum of 0? if you dont know, just tell me
*February 2, 2015*

**English close reading paper**

Is it appropriate to use the "we" form and "I" in the same paper?
*January 29, 2015*

**math**

In a box there are 20 balls.7 of the balls are white. The first ball drawn from the box is white. What is the probability that the second ball will be white
*January 8, 2015*

**Language Arts**

i think its b
*January 8, 2015*

**pacific rim**

Mrs Garcia had 2/3 of a pumpkin pie left.Her sons at 3/8 of what was left. What fraction of the whole pie did her sons eat? 2/3*3/8=6/24
*January 7, 2015*

**Math**

Zach had to make bracelets for Student Council. He made 10 of them on Monday and 2/5 of them on Tuesday. Zach completed the remaining 1/2 on Wednesday. How many bracelets for Student Council did Zach have to make? Tuesday = 2/5 = 4/10 of the total. Wednesday = 1/2 X 3/5 = 3/10...
*December 15, 2014*

**math**

Work is incorrect. See details below. a) a+c=1850 and $7.50a+$4.50c=$10,125. Substitute a=1850-c which gives 7.50(1850-c)+4.50c=10,125 13,875-7.50c+4.50c=10,125 3.00c=3,750 c=1,250 a=1,850-1,250=600 b) 10,125x16=$162,000 c) F=full size football M=miniature football F+M=6,000 $...
*December 15, 2014*

**language arts**

that website is good because it's organized the story.
*December 15, 2014*

**Algebra**

How do you sole the problem below? Kevin flies a plane against a headwind for 5600 miles. The return trip with the wind took 10 hours less time. If the wind speed is 5 mph, how fast does Kevin fly the plane when there is no wind?
*December 14, 2014*

**Algebra**

How long would it take for a ball dropped from the top of a 256-foot building to hit the ground?
*December 10, 2014*

**statistics**

34
*November 30, 2014*

**ashworth**

Asian emphasis on the value of filial piety may be note in ?
*November 19, 2014*

**Math**

Yes, it is I again, with yet another math problem. The question is; In a bag, there are 8 white marbles, 8 blue marbles, 7 red marbles, and 6 yellow marbles. How many marbles does it take to pull out 3 marbles of the same color. (A)6 (B)9 (C)12 (D)15 (E)I forgot the last one I...
*November 16, 2014*

**Math**

I am in 6th grade but to me, that doesn't matter because I have high hopes for myself. My question is; How many distinct letter arrangements can be made from the word LETTER with each T on each side? (A) 6 (B) 12 (C) 24 (D) 120 (E) 720 I think it is 24 because if an ...
*November 15, 2014*

**Economics**

Hamburgers supply and demand puzzle
*November 15, 2014*

**Math**

This question was confusing, but I came up along with help from Google calculator and an inverse trigonometric calculator, that (A) is around 4 degrees and (B) is around 15 meters (to the hundredth degree is 14.96).
*November 15, 2014*

**Calculus**

Find the equation of the line tangent to the function f(x)= square root of (x^3 + 4x) through the point (2,4)
*November 14, 2014*

**Geometry**

A square piece of cardboard, 24 inches by 24 inches, is to be made into an open box by cutting out each of the four corners. Each side of the box will then be folded up. Find the maximum volume that the box can hold.
*November 13, 2014*

**math**

the surface area cost of construction per m^2 for a large box is $50 for the base, $60 for the top and $40 for the walls. Find the dimensions of this box that minimize the cost if its volume has to be 9m^3 and its height, 1m
*November 12, 2014*

**what is the rate of change of the angle of eleva**

An observer is 20 m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 20 m horizontally from the observer (see figure). The angle of elevation of the elevator is the angle that the observer's line of sight makes with the ...
*November 10, 2014*

**calculus**

An observer is 20 m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 20 m horizontally from the observer (see figure). The angle of elevation of the elevator is the angle that the observer's line of sight makes with the ...
*November 9, 2014*

**Physics**

the upward force is 16760N while your two downward forces are 1080N and 13832.1N that comes from gravity x mass. Subtract the two then divide by the mass of the submarine
*October 23, 2014*

**physics**

A car accelerates uniformly from rest to a speed of 73.6 mi/h in 7.68 s. How do i find the distance the car traveled during this time, in units of m
*October 22, 2014*

**physics**

A car accelerates uniformly from rest to a speed of 73.6 mi/h in 7.68 s. Find the constant acceleration of the car. Answer in units of m/s 2
*October 21, 2014*

**tech math**

how to solve one pulley is 7 cm larger in diameter than a second pulley. the larger pulley turns at 80 rpm, and the smaller pulley turns at 136 rpm. what is the diameter of each pulley
*October 19, 2014*

**Calculus**

That silly quotient rule! Thanks.
*October 19, 2014*

**Calculus**

Find f''(1/2) using f(x) = ln(1-x). f'(x) = 1/(1-x) * -1 = -1/(1-x) so then using quotient rule: f''(x) = ((-1*-1) - ((1-x)(0))) / (1-x)^2 f''(1/2) = 1/(1-(1/2))^(2) = 4 Is this correct?
*October 19, 2014*

**Calculus**

This is great, thank you!
*October 19, 2014*