Saturday

April 19, 2014

April 19, 2014

Total # Posts: 93

**calculus**

The velocity of a skateboard is v(t) = t^2 - 4 t + 3 m/s when moving in a straight line. A. Find the the change in displacement of the skateboard between 4 seconds and 6 seconds. (Note this may or may not be negative, meaning it goes in the opposite direction, if so then be su...

**calculus**

\int_{4}^{13} f(x) \,dx - \int_{4}^{11} f(x) \,dx = \int_{a}^{b} f(x) \,dx where a= and b= .

**calculus**

A long narrow piece of land gets flooded each year by a river. The flooded area is in the shape of the area under the curve y = 2.3 x^3 and above the x-axis, for 0 \le x \le 3.2. All the distances are in metres.

**calculus**

a. The value of \displaystyle \int_{-2}^{-1} \frac{14}{ 4 x } dx is b. The value of \displaystyle \int_{1}^{2} \frac{14}{ 4 x } dx is

**calculus**

The following definite integral can be evaluated by subtracting F(B) - F(A), where F(B) and F(A) are found from substituting the limits of integration. \int_{0}^{4} \frac{1600 x +1200 }{(2 x^2 +3 x +1)^5}dx After substitution, the upper limit of integration (B) is : and the lo...

**calculus**

Ice cream drips out of the bottom of an ice cream cone on a hot day at a rate of r(t) mL per second, as a child eats it slowly, where t is in seconds. If r(t) = 10 e^{-k t}, complete the definite integral expressing the quantity of ice cream lost in the first 3 minutes(s). (W...

**calculus**

At a summer campfire, the radius of a marshmallow on a stick expands at the rate of \ {r ' (t)} = \frac{2.1 }{1 t + 5} mm/s where t is the time of heating in seconds. Initially the radius was 3.8 mm. Find the radius after 27 seconds using the following steps: When substitu...

**calculus**

Find the area of the region under the curve y = 16 e ^{4 x} between x = -1.4 to x =1.4 .

**chemistry**

5.3L

**math**

Twenty years ago Gabe invested $2,000. For the first ten years he earned 13% compounded semi-annually. For the next ten years he earned 8% compounded quarterly. What was the value of the investment now, at the end of the 20 years?

**statistic**

an employment information service reports that the mean annual salary for full time male workers ages 25 to 34 with a bachelor's degree is $48718. in a random sample of 12 full time males workers ages 25 to 34 with a bachelor's degree, the mean annual salary is $47164 ...

**Geometry**

-4/5

**electricity**

A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque on the loop in N-m?

**compemtary math**

Now, using the new table factor from the previous question, calculate the compound amount for the $10,000 investment.

**word problem**

juan bought 12 oranges and ate 1/4 of them carla bought 12 oranges and ate 1/3 of them . which ate more

**math**

70.2

**math**

Jeff bought a refrigerator for $1300. He made a 10% down payment and financed the rest at 6% for one year. How much interest did he pay?

**us government**

A person in Michigan applying for a job in Alabama can expect not to be discriminated against because of the ___________ Clause.

**Physics**

the correct equation is this: (.06)(225) = (5)(v) - (.06)(75) momentum is conserved. total momentum is equal to the momentum of the block minus the momentum of the bullet. you subtract because the two objects move in opposite directions.

**physics**

A 6.0 Kg object undergoes an acceleration of 2.o m/s squared. what is the magnitude of the net external force acting on it?

**math**

Keisha had two pieces of ribbon of equal length. She cut the first piece of ribbon into 15 equal parts. She also cut the second piece of ribbon into equal parts. Nine parts of the first piece are equal in length to 3 parts of the second piece. Into how many parts did she cut ...

**chem**

Which has the lowest freezing point?Select one of the options below as your answer: A. pure water B. 0.5 M ionic NaCl C. 0.5 M ionic CaCl2 D. 0.5 M ionic AlCl3 E. 0.5 M molecular C12H22O11

**U.S. History**

Oh, I read that wrong, misunderstanding. Sorry. Thanks a bunch!

**U.S. History**

So, do you think that it is severe drought? Because I think speculative stock purchases and risky banking practices were causes of the Great Depression.

**U.S. History**

Which one of these was not the causes of the Great Depression? excessive income taxes speculative stock purchases risky banking practices severe drought I think it is excessive income taxes or severe drought. But I don't think it is severe drought because of the Dust Bowl....

**phy**

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.

**science**

How do the atmosphere, lithosphere and hydrosphere interact with each other?

**Bussiness**

The market for carrots is comprised of two segments: fresh market carrots, which have excellent, uniform color and a small core, and processing carrots, which are larger than fresh market carrots but still have good flavor, color, and sweetness. Annual data for the years 1983&...

**writing**

I want to know what is wrong in the following sentence: After six months on the job, he faced problems in his first recruitment effort; however, if he solves these problems, the new hires should be able to start working by July.

**economics**

An economist for a bicycle company predicts that, other things equal, a rise in consumer incomes will increase the demand for bicycles. This prediction is based on the assumption that:

**economics**

Suppose that the free market labour supply and labour demand equations are given by Qs = 5W and Qd = 30 - 5W. If the minimum wage were set at $2.50 an hour, how many people would not be able to find work?

**6th grade math-ms. sue**

use the diagram to find the measures of each inicated angle. <dec

**Math**

In a survey of 624 students, 60% more preferred getting news online to getting news on tv. How many students prefer getting news online. I started with the equation 1.6x+x=624, but I don't know if this is the right set up or right idea. Any help is appreciated!

**physics**

a comet experiences a uniforn acceleration from 60m/s to 183m/s what is the rate of acceleration?

**poetry**

Write me acrostic if u can please

**poetry**

Narrative ,free verse, limerick,acrosstic poems about soccer

**maths**

find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to solution.

**Adv algebra**

The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq.

**WRiTinG**

thank you :) but is the paragraph flowing well?

**WRiTinG**

does this paragraph have a good flow? “Nothing is a waste of time if you use the experience wisely.” – Rodin. Time management is the process of exercising conscious control over the amount of time spent on specific activities. I, too, once had been a control fre...

**Algebra**

The equation x^2+px+q=0, q cannot be equal to 0, has two unequal roots such that the squares of the roots are the same as the two roots. Calculate the product pq. I think the obvious root would be one but the second roots i just can't figure out!

**Math**

Yes

**writing **

but is the essay going on the right path?

**writing **

I was wondering if in this paragraph I was going off topic, plz help, maybe give me some pointers? Im not finished with the paragraph but thats what I have so far and need someones opinion... Compassion is like handing a piece of your heart to another person out of love or dee...

**Math**

In how many different ways may the four officers be seated?

**Physics**

A dockworker loading crates on a ship finds that a 19-kg crate, initially at rest on a horizontal surface, requires a 70-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 60 N is required to keep it moving with a constant spee...

**math**

3b-9-8b=11

**physics**

A truck is traveling at 19 m/s to the north. The driver of a car, 460 m to the north and traveling south at 26 m/s, puts on the brakes and slows at 3.5 m/s2. Where do they meet?

**math**

Solve 5 divide by 6 plus 1 divide by10

**Physics**

A Ferris Wheel, 24.0 m in diameter, rotates once every 12.5s. What is the fractional change in a person's apparent weight: a) at the top, and b) at the bottom? I need to know if I'm doing this right. Here's my work: Equation Used: Net Force = [(4(pi)^2)(R)(M)] / [T...

**Physics**

#1.) A wind turbine has a Cp of 0.42 and extracts 50 kW of power when the wind velocity is 25 m/sec. How long are the blades? (ρ = 1.2 kg/m3) #2.) An electric hot water heater is used to heat 30 gallons of water from 20 °C to 45 °C. a. What heat energy is required...

**english**

Mikes car needs a new muffler and new brakes. (Which word needs an aposterphy?)

**Chemistry**

At 298.K and 1.00 atm, assume that 22 mL of NO gas reacts with 18 mL of oxygen gas and excess water to produce nitric acid according to the following equation: 2 NO(g) + 3/2 O2 (g)+ H2O(l)?? 2 HNO3(g). If all of the nitric acid produced by this reaction is collected and then d...

**math**

what numbers have both of the given numbers as factors 3 and 5

**Math**

How many numbers between 1 and 1000 that has the #2 as its only factor

**Algebra**

What is the inverse of y = 4x - 2? Is it y = 1/4x - 1/2 If that is wrong, can you direct me towards the right answer or how to find it Thank you

**algebra with pizazz pg 40 riddle**

haha im doing the same worksheet and i can not find the stupid answer anywhere if you put down (they fascinate) you are missing an S that i do not know where it goes.!

**math**

The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

**math**

The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

**FINANCE**

Answer both questions A).The treasurer of a German firm has €5 million to invest for three months. The annual interest rate in the Germany is 4 percent: the interest rate in the United Kingdom is 2 percent. The spot rate of exchange is €1.1/£ and the three-mont...

**FINANCE**

You are graduating in September and would like to start your own business making wine coolers. You collect the following information on the initial costs: Cost of Plant & Equipment = $500,000 Licensing & Legal Costs = $50,000 You also have been left a tidy inheritance that wil...

**FINANCE**

You are graduating in September and would like to start your own business making wine coolers. You collect the following information on the initial costs: Cost of Plant & Equipment = $500,000 Licensing & Legal Costs = $50,000 You also have been left a tidy inheritance that wil...

**CORPORATE FINANCE**

You are graduating in September and would like to start your own business making wine coolers. You collect the following information on the initial costs: Cost of Plant & Equipment = $500,000 Licensing & Legal Costs = $50,000 You also have been left a tidy inheritance that wil...

**physics**

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on the floor. How much ...

**physics**

1. How far (in meters) must a 600 kg pile driver fall, if it is to do 14000 J of work? 2. A spring whose spring constant is 150 N/m is compressed 0.800 m. What speed (in meters/second) can it give to a 0.600 kg ball when released? 3. A 550 N crate rests on the floor. How much ...

**math**

Find value of x in triangle, given measurements are 76degrees and 71degrees

**math**

two angles of a triangle are 68* and 86*. what is the measurement of the third angle

**Math**

There are two spinners, one numbered 1-6 and one labeled A & B. Spin them only once. Draw a tree diagram showing the probability of spinning 1,A

**6th grade**

My problem is... I had a rectangular garden plot area 60 sq. feet. This year it is one foot wider and 3 feet shorter...but has the same area..60 sq. feet. What were the dimensions of the plot last year. I just want to know how to get started on solving this problem.

**math**

improper fractions to its mixed number

**Algebra 1**

need help

**government**

Most presidential caucuses differ from Statewide presidential primaries in all of the following ways EXCEPT the number of States that hold caucuses. ways in which delegates to the national convention are chosen. main purpose for which the delegates are chosen. number of steps ...

**science**

neptune

**Math**

Solve the equation for Y X-Y=2

**5th grade**

need the biography ofEmily Hutchinson for my English class.

**econonmics**

Discuss how a nurse’s pay is determined and how the salary is structured. Discuss what your chosen state can do to increase the supply of nurses.

**math**

hey thx man, i messed up that one cause i though added to another number ment it goes before it

**math**

yea it sais, three times one number added to another number is 18. twice the first number minus the other number is twelve. find the numbers

**Math**

yea it sais, three times one number added to another number is 18. twice the first number minus the other number is twelve. find the numbers

**Math**

isn't 3 added to 5, 5 + 3? i know it doesn't matter, but when it sais to multiply the first number, i must know wether it's 3 or 5.

**Math**

Write an equation of the line with the given x- and y-intercepts. x-intercept: 3, y-intercept:5

**Math**

-5x - 8y = (-3,0) Is this ordered pair a solution

**Algebra**

Find three different ordered pairs that are solution of the equation Y= 7+4x

** Math**

find y when x= 1,0,and 2 y=13-7x

**Math**

A local gym charge nonmembers $ 19 per hour to use the tennis courts. Members pay a yearly fee of $300 and $4 per hour for using the tennis courts. Write and solve an equation to find how many hours you must use the tennis courts to justify becoming a member.

**Physics**

A 3.3 kg wooden block is placed on 22 degree inclined plane and is connected by a string that passes over a light friciton less pulley at the top of the incline and then attached to a hanging 3.0kg block.If the coefficient of static friction bet the 1st block and the surface o...

**science**

kevin has a piece of aluminum which has a density of 2.7gms/cm3 and a mass of 63 grams what is the volume of the piece of aluminum

**algebra 2**

is 1.765 a rational or irrational number

**math**

k i need to solve the following system: 7x - 8y = 24 xy^2 = 1 i figured out that x = 1/y^2 and i can reduce it to : 7=24y^2+8y^3 but i don't know how to reduce it anymore after that I think I would solve it graphically, that is, plot on my graphing calculator the two origi...

**math**

15/28 45/84

**pre-algebra**

Mara ordered 5 bags of seed for $7.00 each and 3 wildflower seed kits for $9.00 each.She also paid a $13 shipping fee.Which expression shows the total cost? What is the solution of 5(n+m)when n=3 and m=6? Which inequality symbol makes the statement true? 11-(-2)_____-6-12 Mara...

**meaning**

"before you start pointing fingers.. make sure your hands are clean" i'm having trouble defining this quote or explaining it. can you help me?. i think it means before you judge someone you should make sure your actions aren't worse then theirs. uh, not sure....

**Gettysburg**

does anyone know who else was involved in the battle of Gettysburg besides Pres. Lincoln, Robert Lee, & George Meade? please & thank you How about General George Pickett? do you know if that's the only person i forgot? For information on other people involved in that battl...

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