Tuesday

December 6, 2016
Total # Posts: 2,392

**math**

A sphere of radius 7 m is circumscribed about a regular triangular prism. If the base edge of the prism is 1 m, find the volume of the prism (in m3). Round off your answer to four decimal places.

*December 5, 2016*

**Math**

Find the volume of the solid of revolution obtained by revolving the plane region R bounded by y= x^5, the y-axis, and the line y=3 about the x-axis I've gotten 15/7(3^(2/5))pi, but it's not right. Please help

*December 2, 2016*

**Calculus**

Find the volume of the solid of revolution obtained by revolving the plane region R bounded by y= x^5, the y-axis, and the line y=3 about the x-axis So far: y=x^5 is equal to x=5th root y. I've plugged that in to pi(r^2)h, and got V = pi ?[0,3] y^(2/5) dy. so far I've ...

*December 2, 2016*

**Math**

Please help someone

*November 27, 2016*

**Math**

I'm rounding to nearest hundred

*November 27, 2016*

**Math **

Four ways to round to 400

*November 27, 2016*

**Math**

what two numbers rounds to 600

*November 27, 2016*

**Math**

I am rounding to nearest 100

*November 27, 2016*

**Math**

What two numbers round to 700

*November 27, 2016*

**Calculus - Fundamental Thm of Calc**

Suppose F(t) is an antiderivative of t^{3}. Then F'(t)= t^3. According to the Second Fundamental Theorem of Calculus, x ? (t^3)dt = ??? 1 Answer using the function F

*November 23, 2016*

**math**

1/2 < -7/10 is this a true statement

*November 18, 2016*

**Physics**

An object is projected from a satellite orbiting 200 km above the surface of the earth. The object has a speed relative to the Earth of 2.85×104 m/s. What is its speed when it is very far from the earth?

*November 17, 2016*

**Psychics **

Super man lived on Krypton where acceleration due to gravity is 23.6 m/s^2. If a woman falls from a building that is 88.3 meters tall, how long does he have to save her before she hits the ground?

*November 16, 2016*

**Calc**

Find the values of C guaranteed by the mean value theorem for integrals. f(x)=x^3 [0,3]

*November 16, 2016*

**Math **

Rectangle perimeter and area length =2ft width =14in

*November 14, 2016*

**Physics**

A force of 123 N acts on a 10.0kg object for 45.6 meters. If the objects starts at rest, and the surface is flat and frictionless, how fast is the object moving after the force is removed. I got acceleration to be 12.3, but I am not sure how to move on with the problem.

*November 13, 2016*

**Calculus**

True/false: x^2-3 is concave up on the interval (-1,1) The second derivative of x^2-3 is just 2. How do I determine concavity of a function when I can't set it equal to 0? And then how do I answer this question when it's asking for a specific interval?

*November 11, 2016*

**Spanish**

D A A C B

*November 7, 2016*

**Chemistry**

In a similar experiment, a sample of tin metal was dissolved in nitric acid to produce 23.00 mL of solution containing Sn2+. Titration analysis resulted in the calculation that the concentration of Sn2+ in this solution was 0.65 mol/L. b. What mass of tin was used to make the ...

*November 5, 2016*

**Calculus - Special sum formulas**

Find a formula for Sum_{j=1}^n (j+3) (j-4) So far, I have foiled to j^2-j-12. Thus,Sum_{j=1}^n(j^2) - Sum_{j=1}^n(j) - Sum_{j=1}^n(12). From Special Sum formulas, I have gotten to n(n+1)(2n+1)/6 - n(n+1)/2 - 12n What do I do from here?

*November 4, 2016*

**Calculus - Differential Equations**

Use separation of variables to find the solution to the differential equation: 4 (du/dt) = u^2, subject to the initial condition u(0)=6.

*November 4, 2016*

**Calculus**

Find the xy-equation of the curve that passes through (-2, -2) and whose slope at any point on the curve is equal to 5 times the x-coordinate of that point

*November 4, 2016*

**Calc**

A rectangular package to be sent by a postal service can have a maximum combined length and girth (perimeter of a cross section) of 90 inches (see figure). Find the dimensions of the package of maximum volume that can be sent. (Assume the cross section is square.)

*November 3, 2016*

**Calculus**

True or False If F(x) and G(x) are antiderivatives of f(x), then F(x)=G(x)+C If f'(x) = g(x) then integral g(x) dx = f(x) + C Integral f(x) * g(x)dx = integral f(x)dx * integral g(x)dx I have a feeling it's False True True

*November 2, 2016*

**Math**

Kate cycles the first 350 km of a 470 km journey at a certain average speed and the remaining distance at an average speed that is 15 km/h less than that for the first part of the journey. If the time taken for her to travel each part of her journey is the same, find the ...

*November 2, 2016*

**Calc**

If a car is driving in a straight line with constant acceleration a, initial velocity v0, and initial position s0, find a formula for the position function of the car. How would I solve this equation?

*November 1, 2016*

**chemistry**

what is the name of this coordination compound [CoSO4(NH3)5]Br?

*October 31, 2016*

**Math**

Ten analog measurements whose bandwidth is 4 kHz are to be transmitted simultaneously through a cable by time division multiplexing using PCM. Each message is sampled at a 10 kHz rate and amplitude quantized into 128 levels. The pulses are shaped with a near-ideal low pass ...

*October 31, 2016*

**Math**

We are given the problem of communicating a series of symbols, each of which can take on one of 512 values at a rate of f_s =〖10〗^5 symbols/s. A) What is the required bandwidth if PCM is used with m=1? B) Repeat for PAM with m=2, if each pulse can take on 8 ...

*October 31, 2016*

**Math**

A sausage sample was found to contain 65% moisture, based on fresh weight. The sausage was dried in an oven until its moisture content was 10%. A 2.0 g portion of the dried sausage was extracted with the Soxhlet method to determine the amount of crude fat. A clean Soxhlet ...

*October 29, 2016*

**History**

Thanks Ms.sue

*October 22, 2016*

**History**

How did George Mason influence the creation of Bill of Rights? A.He refused to sign the United States Constitution. B.He encouraged others to opposed the ratification of the Constitution. C.He assembled a anti-federalist convention in Virginia to discuss the matter. D.He wrote...

*October 22, 2016*

**chemistry**

0.350 L of 0.470 M H2SO4 is mixed with 0.300 L of 0.250 M KOH. What concentration of sulfuric acid remains after neutralization?

*October 18, 2016*

**Maths**

A plane flies a course of 346 degrees and then turns through 30 degrees in the clockwise direction. Find its new bearing. Since the plane from starting point covers a bearing of 346 degrees it's now going to be in the NW direction but going 30 more degrees clockwise that...

*October 18, 2016*

**Math**

the towns highway department marks a new road with reflective markers the road is 6 3/4 miles in length the markers are spaced every length 1/8 of a mile

*October 14, 2016*

**social studies**

So its B

*October 13, 2016*

**econ**

given p=68-4qd-qd^2 p=12+2qs+qs^2 where p is the price qd is the quantity demanded qs is the quantity supplied determine the uquilibrium and the quantity of the commodity

*October 13, 2016*

**Basic math **

A ladder 10 feet long leans against a building the base of the ladder is 6 feet how high is the paint where the ladder touches the building

*October 13, 2016*

**Basic math **

A 15 foot ladder propped against a wall the base of the ladder is 3 feet from the wall how far up the wall does the ladder reach.

*October 13, 2016*

**math 1**

What is the value of the expression below? (2^-4)(3^0)(7)/(5^-2)(4^-2)(175) Remember: Negative exponents in the denominator move to the top with its base, and negative exponents in the numerator move to the bottom with its base. In both cases you should drop the negative sign...

*October 12, 2016*

**math 1**

How do i put a pitcure because the problem is a picture

*October 12, 2016*

**math 1**

Please help with this i don't under stand it at all Hint: Copy and paste in in the search bar.

*October 12, 2016*

**math 1**

file:///C:/Users/Elvis/Downloads/34c349524b928a5f67768aa8eb6e1c02.png

*October 12, 2016*

**math**

Answer is -16 :)

*October 12, 2016*

**math**

ive got it ive seen my mistake

*October 12, 2016*

**math**

Find the values of x and y in the two equations below then answer the question that follows. 2^-3=1/x 7^y=1/49 What is the value of xy ? For the first problem i got 8. For the second one i got 1/343 I don't know what im doing wrong or right. Can you please show me with work.

*October 12, 2016*

**Chemistry**

Based on the standard reduction potentials given below, which species is most likely to be oxidized? Ag+ + e- → Ag, Eo= 0.80 V Cu2+ + 2e- → Cu, Eo= 0.34 V Zn2+ + 2e- → Zn, Eo= -0.76 V Cd2+ + 2e- → Cd, Eo= -0.40 V I thought the answer would be Zn2+ that...

*October 12, 2016*

**Chemistery **

Calculate the concentration of O 2 if K c = 270 for the reaction 2SO 2 (g)+O 2 (g)⇌2SO 3 (g) .

*October 10, 2016*

**College Algebra**

Tammy can do a certain job in 6 hours. Kris can do the same job in 8 hours. If Tammy and Kris work together to complete the same job, how many hours will it take for them to complete it?

*October 8, 2016*

**Calculus - Approximation**

Use linear approximation, i.e. the tangent line, to approximate cubed root { 1.1 }. The equation of the tangent line to f(x) at x = 1 can be written in the form y = mx+b. Show your work. Do not use a calculator.

*October 7, 2016*

**Math - Calculus 1**

Approximate using derivatives. (Must show work using derivatives!) Do not use a calculator: (1.1)^4 - (1.1)^2

*October 7, 2016*

**Calculus - Related Rates**

Suppose that you are watching a spaceship take off. You are 100 meters from the launch pad, and you measure the angle made by the rocket and the ground to be increasing at a rate of (d)(theta)/dt = 0.1 radians per second. What is the velocity of the rocket when theta = pi/4?

*October 7, 2016*

**Social Studies**

1 b&d 2a 3b

*October 4, 2016*

**Physics**

usain bolt set the world record for the 100m dash, proving to be the fastest man in history, with a time of 9.58s. what was bolt's average speed in miles per hour? (his initial speed was 100m/9.58s I got 23.35 mph for this I need help with this. VVVVVVVVVVVVVV assume that ...

*October 4, 2016*

**math**

Joe is playing a game with a regular die. if the number that turns up is even he will gain 5 times the number that comes up. if it is odd, he will lose 10 times the number that comes up. he tosses a 3. express the results as an integer

*October 4, 2016*

**College math**

A bag contains 9 white 7yellow marbles,8 green marbles. If one marble is drawn from the bag then replaced, what is the probability of drawing a white marble then a green marble?

*October 1, 2016*

**Help with compute probability **

Compute the probability of randomly drawing five cards from a deck and getting 3 Aces and 2 Kings. (Give your answer as a fraction.) Probability

*October 1, 2016*

**Chemistry**

So I've done as you said and have come up with the following: C (g) = 0.0437g H (g) = 0.00583g O (g) = 0.01167g C(mol)=0.00364mol H(mol)=0.00578mol O(mol)=0.000729 I then divide for the ratio (Mm=m/n) and get 12 for C, 1 for H, and 16 for O, making the formula: C12HO16, ...

*September 22, 2016*

**Chemistry**

Sorry, it's 0.06120 g produced 0.1601 g of CO2 and 0.05243 g of H2O

*September 22, 2016*

**Chemistry**

Hey, can someone help me with this? A compound containing only C, H and O was subjected to combustion analysis. A sample of 6.120Ã—10^-2 g produced 1.601Ã—10^-1 g of CO2 and 5.243Ã—10^-2 g of H2O. Determine the empirical formula of the ...

*September 22, 2016*

**Precalculus**

Thank you so much!!! I see what I was doing wrong now. PS: You have good handwriting :)

*September 19, 2016*

**Precalculus**

Yeah, I tried drawing a diagram, but I just keep getting confused.

*September 19, 2016*

**Precalculus**

In triangle ABC, we have AB=3 and AC=4. Side BC and the median from A to BC have the same length. What is BC? Please help, I have no idea where to start.

*September 19, 2016*

**math**

a man sleeps 8 hours a day. how many hours can he sleep in a year?

*September 19, 2016*

**math**

Sara is thinking of a number when she rounds her number to the nearest hundred,she gets 700.What is the greatest number Sara can be thinking of?Explain

*September 13, 2016*

**Please check my answer(Social Studies)**

So what's the answers

*September 13, 2016*

**Physics**

A drag racer starts her car from rest and accelerates at 4.8 m/s 2 for the entire distance of 409 m. How long did it take the car to travel this distance?

*September 13, 2016*

**Science**

Which of the following means using specific observations to make generalizations? A: BIAS B: Subjective C: Deductive Reasoning D: Inductive resoning is the answer c?

*September 12, 2016*

**Social Studies**

yes he is correct 5 is c

*September 12, 2016*

**home economics**

what are the branches of fibre

*September 11, 2016*

**Physics**

A block of mass m1= 3.70kg rests on a 30degree incline and is held stationary by a mass of 1.3kg hanging vertically over a frictionaless pulley at the top. Calculate the value of u (coefficent of friction)

*September 8, 2016*

**Physics**

56.7 m

*September 7, 2016*

**Math**

How do you write 4,000,000,000 + 20,000,000 + 500,000 + 60,000 + 1,000 + 300 + 40

*August 30, 2016*

**Chemistry**

24.332

*August 28, 2016*

**math**

6 people like soccer, 3 like volleyball, 7 likefootball, and 2 likebasket ball show that in tallies

*August 23, 2016*

**Economics**

Consider a single price monopoly that faces a market demand curve for a good is given by the equation 𝑃=100−.1𝑄 and the total cost function is given as 𝑇𝐶=1000+20𝑄+.4𝑄2. a. What is the total fixed cost for this monopoly? P=...

*August 23, 2016*

**Social Studies**

Thank you Anonymous

*August 18, 2016*

**Social Studies**

Everyone needs to chill 1. If Ms.Sue is gay so what, If you don't like it go somewhere else and get the answer 2. Ms.Sue is a human if she got it wrong, OK y'all never made a mistake? Should we be mean to you for your mistake? Shes only human y'all can have a ...

*August 18, 2016*

**science**

The boy A weighs 50 kg and the girl B weighs 35 kg in a seesaw...the board of the seesaw is 3.6 meter... To balance the seesaw where should girl C who weighs 25 kg seat or what particular distance should girl C seat to balance it

*August 18, 2016*

**Calc**

Find the value of m such that y=mx divides the area under the curve y=(1-x)x in [0,1] into two regions of equal area D: D: D:

*August 17, 2016*

**Math**

Solve the equation: (1) 5/2 = 3x; x= (2) 7/2 = 4x; x=

*August 15, 2016*

**Math**

Solve the equation: (1) 5= 6y; y (2) 7/2 = 4x; x

*August 15, 2016*

**Math **

Solve the equation: 9/5 = 1 + m; m

*August 15, 2016*

**Math**

Solve the equation 1) 4= 5y; y = 2) 7/4 = 1 + m; m= 3) 7= 6y; y

*August 15, 2016*

**Maths**

Prove that sin2x+cos2x-1/sin2x+cos2x+1=tanx

*August 9, 2016*

**Math **

A fossilized leaf contains 21% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14.

*August 3, 2016*

**Science (Biology)**

krfkrfrf

*July 30, 2016*

**Math**

A car is traveling at a rate of 35 meters per second. What is the car's rate in kilometers per hour? How many kilometers will the car travel in 3 hours? Do not round your answers.

*July 29, 2016*

**Math**

solve these questions using distributive property 30% Of 10= 30% of 20= 30% of 30=

*July 23, 2016*

**Calc **

a large closed storage rectangular box with a base constructed with two different types of wood. the base is made up of wood $5 per square feet and the top and sides are made of wood $3 per square feet suppose the amount available to spend is $1000 find the dimensions of the ...

*July 20, 2016*

**math**

The angles of elevation of a balloon directly above a straight road, from two points of the ground on opposite sides of the balloon, are 78¡ã15' and 59¡ã47'. If the points are 5000ft apart, what is the height of the balloon?

*July 20, 2016*

**ENGLISH**

A creative writing teacher tells students to publish their writing projects in a nonprint format. Which of the following techniques would not meet the teacher’s requirements?

*July 13, 2016*

**Chemistry**

14 grams of coal undergoes complete combustion in 58 grams of oxygen gas. What volume of gas (measured at 25 degrees celsius and 100 kPa) is present when the reaction is complete?

*July 11, 2016*

**Calculus**

Launching a missile to hit a target 100 miles away. Determine the launch speed of the missile along with the angle at which it's to be fired. Also, show your work and one of the angle that will work. Finally, assume that the only force acting on the missile is gravity.

*July 7, 2016*

**Maths**

The sum of the interior angles o a regular polygon is 30 right angles. How many sides have the polygon?

*July 7, 2016*

**University of Liberia Chemistry 102**

Using a current of 4.75A how many minutes does it takes to plate onto a sculpture 1.50g of CuSO4 solution?

*June 29, 2016*

**Math**

If the 16th term of an arithmetic sequence is three times the fourth term, find the ratio of the 23rd term to the third term.

*June 27, 2016*

**physics**

7.500N

*June 18, 2016*

**physics**

calculate the net force required to give a 3000kg trucks an acceleration of 2.5m/s^2

*June 18, 2016*

**Calculus- PLEASE HELP**

A rectangular piece of tin has an area of 1334 square inches. A square tab of 3 inches is cut from each corner, and the ends and sides are turned up to make an open box. If the volume of the box is 2760 cubic inches, what were the original dimensions of the rectangular piece ...

*June 14, 2016*