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Posts by travis

Total # Posts: 121

Calculus
Let the length of a rod be 10 meters and the linear density of the rod ?(x) be written in the form ?(x) = ax + b with x = 0 representing the left end of the rod and x = 10 representing the right end of the rod. If the density of the rod is 2kg/m at the left end and 17 kg/m at ...

Calculus
Use the disk method to find the volume of the solid generated by revolving about the y-axis the region bounded by the curves y=8?x^2 and the curve y=x^2.

Math
Well 4 quarts equals a gallon. She filled the 2 quart pitcher 6 times, so you would multiply 2 by 6 equaling 12 total quarts. Divide that 12 by 4 and you would get 3 gallons.

Calculus
Two planes leave an airport simultaneously. One travels north at 300 mph and the other travels west at 400 mph. How fast is the distance between them changing after 10 minutes?

Math
I tried answering this and pending how I read it I get several answers. Any help out there 1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your answer in kilograms.

Math
I tried answering this and pending how I read it I get several answers. Any help out there 1. A box of crackers has a mass of p kilograms. When empty, the box has a mass of 200 grams. What is the total mass of the crackers in 5 such boxes? Express your answer in kilograms.

Math
What is 1+1

Science
in scientific inquiry what is communicating?

Math CSET
Without more information I'd use a normal curve distribution and notice the earned score is 3 standard deviations from the mean and the student earning a 96% is in the 99.9 percentile. From the mean on a normal curve the 1st standard deviation is 34.1, then 13.6, then 2.1 ...

Math
So 1-.42= .58, so the probability of getting atleast 1 white ball is 58%?

Math
I think 8/12 * 7/11= 56/132=42%?

Math
A bag contains 5 red balls, 4 white balls, and 3 black balls. Two balls are drawn without replacement. What is the probability that at least one ball drawn is white?

Math
Find the probability using combinations.A bag contains 6 cherry, 3 orange and 2 lemon candies. You reach in and take 3 pieces of candy at random. Find the probability that you have all cherry candies.

Math
He can only teach 5 classes and he can't spend more than 18 hours per week preparing lessons and grading papers-Those are the constraints I think and he has to maximize his income

Math
Solve the following linear programming problems by the graphical method Dr. Lum teaches part-time at two different community colleges, Hilltop College and Serra College. Dr. Lum can teach up to 5 classes per semester. For every class taught by him at Hilltop College, he needs ...

Math
Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign

Math
Find the volume of water required to fill a pool with a diameter of 6m and a height of 2m. Keep in mind that the water must travel through a hose before it goes into the pool. Assume the hose is a perfect cylinder. The length of the hose is 8m and the diameter of the inner ...

Education
How are the “image of the child” and the “image of the teacher connected"?

Health
Anonymous is right⬆️

math,science,algebra,geography
where u find it?,what website

math,science,algebra,geography
HOW DO U FIND YOUR ANWSER??

Physical Science
A 144 kg park bench made of iron sits in the sun and its temperature increases from 25 degrees celsius to 35 degrees celsius. How many kilojoules of energy does the bench absorb?

algebra 2
simplify:(4xy^2)^-3

math
andy and april shared pie.Andy ate 2/5 of the pie april ate 1/3 how much did they eat all together

geometry
Prove: △ABC has at least one angle with measure 60° or less

math algebra
a tabletop is shaped like a golden rectandle its lenth is 5 ft whats the able width

Physics
Consider the diagram shown below of a stationary 8 kg mass suspended from the ceiling by two inextensible ropes Draw a scale diagram

S.S
Impressment

chemistry
Which of the following is true regarding the solubility of gases in liquids? Question 4 options: Solubility decreases as temperature increases. Solubility increases as temperature increases. Solubility is unaffected by changes in temperature. None of the above

Math
Here's what I got. Amount of pool filled by both the pumps is 1/12 + 1/16 = 7/48 Use common ratios of (amount of pool)/(time): (7/48)/1 = 1/x Cross multiply: x = 48/7 = 6.9 hours, or more precisely 6 hours, 51 minutes, and 26 seconds

biomechanics
During a biceps curl, the elbow's relative angle during flexion changes from 3° to 157°. During an 8 repetition set, what is the total angular distance and displacement at the elbow in degrees and radians?

Physicis
Airplane staring from airport a flies 300 km east then 395 km 26.5 degrees west of north, and then 150 km north to arrive at airport b. what angle is the straight flight from a to b north of east and how far

Calculus
A table of values for f,g,f′, and g′ are given in the table below: x f(x) g(x) f′(x) g′(x) 5 0 -4 -9 5 0 5 0 -6 9 -4 5 5 9 -5 If h(x)=f(g(x)), find h′(5), If H(x)=g(f(x)), find H′(0)

Calculus
A table of values for f,g,f′, and g′ are given in the table below: x f(x) g(x) f′(x) g′(x) 5 0 -4 -9 5 0 5 0 -6 9 -4 5 5 9 -5 If h(x)=f(g(x)), find h′(5), If H(x)=g(f(x)), find H′(0)

Calculus
If f(3)=−3, g(3)=9, f′(3)=1, and g′(3)=2, Find (f/(f−g))′(3).

Calculus
A manufacturer produces bolts of fabric with a fixed width. The quantity q of this fabric (measured in yards) that is sold is a function of the selling price p (in dollars per yard), so we can write q = f(p).Then the total revenue earned with selling price p is R(p) = pf(p)....

Physics
This is correct, thanks!

Calculus
A rectangular storage container with an open top is to have a volume of 10m^3. The length of its base is twice the width. Material for the base costs $3 per m^2. Material for the sides costs $10.8 per m^2. Find the dimensions of the container which will minimize cost and the ...

Calculus
The owner of a used tire store wants to construct a fence to enclose a rectangular outdoor storage area adjacent to the store, using part of the side of the store (which is 220 feet long) for part of one of the sides. (See the figure below.) There are 430 feet of fencing ...

Math
If i have 3 inch squares cut out the corners of a rectangular shaped piece of cardboard...after folding the the to form a box the length is twice as long as it is wide and has a volume of 1350 cubic inces...what are the dimensions

calculus
Find the values of p for which the following series is convergent. The sum from n=2 to infinity of 1/(n(ln(n))^p). I tried the integral test using u-substitution, and I know the answer is p>1, but I'm not quite sure how to get there. Thanks for the help.

Calculus
Prove that the integral from 0 to 2 of sqrt(4-x^2)dx = pi Should I use a trip substitution for this? Thanks for the help.

calculus
f''(x) = (3x^3 - 5x^2 + 1) / x^2; and f(1) = 0, f(-1) = 1. So i turn f''(x) into (3x^3 - 5x^2 + 1)(x^-2) and multiply to get f''(x) = 3x - 5 + x^-2 So f'(x) = (3/2)x^2 - 5x - (1/x) + c And f(x) = (1/2)x^3 - (5/2)x^2 - ln(x) + cx + d Not really sure ...

Calculus
Use implicit differentiation to find dy/dx. e^4x = sin(x+2y). This is a practice problem. It says the correct answer is 4e^x/(2sin(x+2y)) but I keep getting 4e^(4x)/(2cos(x+2y)). I thought the derivative of e^(4x) would be 4e^(4x), not 4e^(x). And I use chain rule on sin(x+2y...

calculus
Differentiate: 1/s+ke^s Do I just use the quotient rule? Thanks

calculus
Suppose f'(x) = xe^-x^2. a) On what interval is f increasing? On what interval is f decreasing? b) Does f have a maximum value? Minimum value? So should I assume that f'(x) > 0 since e has to be a positive number?

calculus
a) Sketch a curve whose slope is always positive and increasing. b) Sketch a curve whose slope is always positive and decreasing. c) Give equations for curves with these properties. So for a, I drew a positive slope that was concave up. And for b, I drew a slope that was ...

science
I don't know how to solve this. Please help me!!!!!

chemistry
Water (H20) is a liquid at room temperature and atmospheric pressure whereas hydrogen sulfide (H2S) is a gas under the same conditions. Based on this information, what can you say about the intermolecular interactions in these two substances. So would this have to do with ...

Chemistry
Specify the number of core and valence electrons for Ti^2+ Can I just pretend that this ion is calcium and calculate the valence electrons that way? So 18 core, 2 valence?

Chemistry
Write the chemical symbol for the atomic species with 35 electrons and a charge of +34 on the nucleus. Does the +34 charge just mean the number of protons? And then 35 electrons would give it a - charge so it would be Se-? Or am I looking at this question wrong? Thanks!

chemistry
"The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed by the ozone layer in the upper atmosphere (altitudes of 10 - 50 km), but the part that reaches the earth can cause DNA mutations. The highest ...

Chemistry
"The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed by the ozone layer in the upper atmosphere (altitudes of 10 - 50 km), but the part that reaches the earth can cause DNA mutations. The highest ...

Pizzazz
They Fascinate

chemistry
5.0% glucose has a specific gravity of 1.02. what is the mass of 470mL of glucose solution.

math
Jerry and perry

general
What are the various long-term and short-term impacts of food wastage? Please give answers from multiple area eg. cultural,social,economics etc. Global warming I have found out about it so please give a more insightful answe

geometry
A line has a slope of 0.5 and a y-intercept of (0, -2). What is the value of y when x = 4?

chemistry
nevermind got it

chemistry
the thermite reaction was previously used to weld the rails of railroad tracks together. the reaction is: Fe2O3(s)+ 2Al(s)--> 2Fe(l)+ Al2O3(s) (2Fe and 3 oxygen) (2Al and 3 oxygen) what masses of iron(III) oxie and aluminum must be used to produce 15.0g of liquid iron? what...

physics
kgygkc

Physics
Actually, forgot to square the velocity: KE = (1/2)(1540kg)(30.6)^2 = 720997.2 Joules

Physics
Kinetic Energy (KE)=(1/2)mv^2 First convert km/hr to m/s (110km/hr)*(1000m/1km)*(1hr/3600s) = 30.6 m/s Plug everything into the formula KE = (1/2)(1540kg)(30.6m/s) = 23527.78 Joules

Chemistry
What happens in confirmatory test for bismuth? What happens in confirmatory test for copper? What happens in confirmatory test for arsenic? Please help! an you explain in detail. even a link explaining it would help

chemistry
write the name or formula for a reagent that will dissolve PbCl2 but not Hg2Cl2 and AgCl?

chemistry
Calculate the activation energy (in Joules) for a reaction whose rate constant doubles when the temperature is raised from 298 K to 500 K. Take R to be 8.314 J/K-mol.

chemistry
Very carefully, but breifly discuss, with specific example, Le Chatelier Principle and its relationship to common ion effect.

Physics
Hello, Steve. Thanks for help, but I'm sorry that your answer is incorrect. I had tried your answer, but it said incorrect.

Physics
In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 3.5 m away. After a running start, he leaps at an angle of 14 with respect to the flat roof while traveling at a speed of 5.6 m/s. The acceleration of gravity is 9...

statistics
377

Grade 12 Data Management
10

math
What 2 numbers multiply to 30 but add to 16

Arkansas History
what are some major cities in crowley's ridge and why are they important

Finite Math
Thank you reiny i love u

Chemistry
Calculate the amount of energy released when Methane is burned.

Chemistry
Calculate the amount of energy released when Butane is burned.

Chemistry
Calculate the amount of energy released when Ethanol is burned.

English
Im on the same question :/

math
Bill purchased 4 pens for $3.32 including $.16 sales tax. FIND THE C COST OF ONE PEN. I need to write this in an equation. Then solve that's what the worksheet says.

Math
I am a 5-digit whole number. I have 4 different digits. There are no 7s or 5s and I only have one 2. My hundreds digit is the least. My tens digit is odd and is the sum of all the other digits. What number could I be?

calculus
find the centroid of the region bounded by x^2-12x and the x-axis

chemistry
How many grams of NH3 are produced when 5.40g of H2 react with an excess of N2?

geometry
Find the radius of the circle whose equation is (x^2 - 10x + 25) + (y^2 - 16y + 64) = 16.

college algebra
Find the arc of the following: f(x)=x^2-8x+15 from x=4 to x=6

college algebra
10+2[2+(1+1)-2^2]

algebra
10+2[2+(1+1)-2 to the 2nd power]

Chemistry
Which aqueous solution would you expect to have the lowest freezing point? (a) 0.10 molal glucose,C6H12O6, or (b)0.10 molal NaCl solution

math
-6(9-9v)

science
Animal cells and plant cells have an outer covering, a _____. Their control center is called a _______.

medical terminology
Medical Terminology Error Correct Term 1. Constructive Obstructive The error is on the left and the correction is on the left, I hope this helps. 2. CODP COPD 3. afonia pneumonia 4. spudum sputum 5. lower left lobe left lower lobe 6. PFT PFTs 7. eupnea apnea 8. ventolator ...

us history
The ancient Greek city-state of Athens was _____.

Math
Suppose that $2500 is invested at an interest rate of 2.5% per year, compounded continuously. After how many years will the initial investment be doubled?

computer science
Please design the ¡§Classes¡¨ that will work together for the implementation of the User Case ¡§Validate User¡¨ in the ATM machine. its just want us o write a diagram..

Math
yes

math
What do you do if the bottom number of a fraction is greater than the top number and you are subtracting?

geometry
The bases of a trapezoid measure 1/4 and 3/8 inches, and the height is 1 inch. What is the area of the trapezoid?

Literary Analysis and Composition
Yeah thanks :)

accounting
Is it necessary for a finance manager to understand accounting if the firm has a professional accountant on staff and why?

Finance
Dr. J. wants to buy a Dell computer which will cost $2,788 four years from today. He would like to set aside an equal amount at the end of each year in order to accumulate the amount needed. He can earn 7% annual return. How much should he set aside? A. $823.15 B. $531.81 C. $...

english
Imagine you are on a local commission appointed to study the lack of proper recreation facilities for youth in your neighborhood. Decide what facilities should be recommended. Write an appropriate resolution to be presented to your county government. Remember to give the ...

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