Tuesday

March 31, 2015

March 31, 2015

Total # Posts: 79,559

**Math**

So far john has run 1/4 of the way to school and walked 3/8 of the way.What fraction of the distance to school does john have left?
*February 14, 2015*

**Physics**

If the rifle is stopped by the hunter’s shoulder in a distance of 3.16 cm, what is the magnitude of the average force exerted on the shoulder by the rifle? Answer in units of N. mass of bullet= 0.0137 kg velocity of bullet= 546 m/s to the right mass of rifle= 3.82 kg ...
*February 14, 2015*

**French**

But my textbook has an example of à midi et demi. If it is right to use à for midi et demi, then why can't I do the same for matin?
*February 14, 2015*

**French**

Which sentence is correct? 1. J'ai anglais de matin. 2. J'ai anglais à matin.
*February 14, 2015*

**Physics **

How does the energy stored in a capacitor change if (a) the potential difference is doubled, and (b) the charge on each plate is doubled, as the capacitor remains connected to a battery?
*February 14, 2015*

**Science**

Thank you
*February 14, 2015*

**math**

on a test of 50 question jill answered 47 correctly.how many percent did she answered correctly
*February 13, 2015*

**math**

The annual interest rate for a customer’s loan of $425 is 15.75%. What is the total dollar amount to be repaid on the loan, including principle and interest, for the entire year?
*February 13, 2015*

**Physics **

How does the energy stored in a capacitor change if (a) the potential difference is doubled, and (b) the charge on each plate is doubled, as the capacitor remains connected to a battery?
*February 13, 2015*

**math**

why it become 42?
*February 13, 2015*

**kayli**

Thermal energy is caused by the motion of
*February 13, 2015*

**pre- calculus**

In how many ways can a family of six be seated at a round table if the mother and father must sit together?
*February 13, 2015*

**GEOMETRY**

Thank you
*February 13, 2015*

**GEOMETRY**

Find the exact length of the altitude drawn to the hypotenuse. Do not round. The triangle is not drawn to scale. A triangle with base measures of 9 & 17. Draw a diagram. Using similar triangles, we know that h/9 = 17/ã370 I need more help with this. Thank you
*February 13, 2015*

**Calculus**

Let f(x)=cosxsqrt(1+sinx). A. Let F(x)=the integral of f(x)dx and F(0)=5/3, find F(pi/2). I got 3.386 with U-substitution B. If G(x)=the integral of f(x)sinxdx and G(0)=1/3, find G(x). I got a reply to this but I did not understand the explanation. How would I solve this with ...
*February 13, 2015*

**health**

If older adults are at risk of falling ,they should do exercises that maintain or improve
*February 13, 2015*

**maths**

A and B can finish a piece of work in 16 days and 12 days respectively. A started the work and worked at it for 2 days.He was then joined by B.Find the total time taken to finish the work.
*February 13, 2015*

**Calculus**

The integral of sin(7x)cos(7x)dx
*February 13, 2015*

**Calculus**

Integration with substitution The integral of f'(g(5x))g'(5x)dx
*February 13, 2015*

**physics**

Stone dropped from top of a tower 100m high. At same instant another stone is thrown vertically from base of the tower with a velocity of 25m/s. When and where will the two stones meet? Given g =10 m/s^2
*February 13, 2015*

**Calculus**

I don't understand your explanation. How would you go about it with u-substitution?
*February 13, 2015*

**Calculus**

Let f(x)=cosxsqrt(1+sinx) A. If F(x)=the integral of f(x)dx and F(0)=5/3, find F(pi/2). B. If G(x)=the integral of f(x)sinx dx and G(0)=1/3, find G(x).
*February 13, 2015*

**Calculus**

f'(x) if x is less than or greater than 1 Let F'(x)={ g'(x) if x>1 Where f'(x)=x/(x^2-2)^2 and g'(x)=3x-4 A. If f(1)=3/2, find f(x) B. If F(x) is continuous at x=1, find g(x). C. Express F(x). D. If F(x) is continuous at x=1, determine if F(x) is ...
*February 13, 2015*

**Calculus**

Integration with trig functions Integral of [(1-sinx)/cos^2x] dx
*February 12, 2015*

**Geometry**

What is the value of x, given PQ || BC? Triangle: A, B, C with bisector PQ AP = 8 PB = x AQ = 12 QC = 18
*February 12, 2015*

**Calculus**

Integration with U-Substitution Integral of [x/sqrt(x+1)] dx I'm getting confused with how to deal with the x when I find the derivative of (x+1) because they don't match.
*February 12, 2015*

**Geometry B**

Find the exact length of the altitude drawn to the hypotenuse. Do not round. The triangle is not drawn to scale. A triangle with base measures of 9 & 17. Please help
*February 12, 2015*

**Calculus**

Suppose f"(x)=6x-2 A. If f'(1)=5, find f'(x). I got f'(x)=3x^2-2x+4 B. Fine the average rate of change of f on [-1,4]. C. Fine the value of x guaranteed by the mean value theorem for r on [-1,4]. D. If f(-1)=-2, find f(x) I am not sure how to do B, C, and D.
*February 12, 2015*

**physics**

A 3.6 kg rock is initially at rest at the top of a cliﬀ. Assume that the rock falls into the sea at the foot of the cliﬀ and that its kinetic energy is transferred entirely to the water. How high is the cliﬀ if the temperature of 1.1 kg of water is raised ...
*February 12, 2015*

**social studies **

the british commander at the battle of waterloo, lord wellington, once said that he would never attempt to write an account of the battle. why do you think he felt this way ?
*February 12, 2015*

**Calculus**

Integrate: Indefinite integral of [(sqrt(x))-1]^2 / [sqrt(x)] dx
*February 12, 2015*

**art**

Ms. Sue, thank you so much, I really appreciate your help! :D You are truly amazing, thanks again! :)
*February 12, 2015*

**art**

A conservator is working to restore a large marble statue from a Greek temple by scrubbing it with water and soap. What is a likely drawback to this preservation? A. Breaking of large sections of marble during scrubbing. B. Removing the aged look of the statue during scrubbing...
*February 12, 2015*

**physics**

while rowing in a race, john uses his arms to exert a force of 165 N per stroke while pulling the .80 m. how much work does he do in 30 stroke?
*February 12, 2015*

**Physics Dynamics**

A sled of mass m = 70.0 kg is being pulled horizontally on a frictionless floor by a force F = 420 N that makes an angle 20.0o above the horizontal. What is the magnitude of the normal force applied by the ground on the sled?
*February 12, 2015*

**Physics Dynamics**

A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.69 of the person's regular weight. Calculate the magnitude of the acceleration of the elevator.
*February 12, 2015*

**Physics Dynamics**

A child slides down a slide with a 24o incline, and at the bottom her speed is precisely one-third what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
*February 12, 2015*

**Physics Dynamics**

An arrow has an initial launch speed of 32 m/s. If it must strike a target 38 m away at the same elevation, what should be the projection angle?
*February 12, 2015*

**Physics Dynamics**

Swimming at 2.00 m/s relative to still water, a swimmer heads directly across a river of width 80 m. He arrives 35 m downstream from the point directly across the river from his starting point. (a) What is the speed of the current in the river? (b) At what angle relative to ...
*February 12, 2015*

**Quick english check**

Use the house on mango street, "No Speak English" to answer the following questions. Please correct me if I'm wrong. 1. Which of the following best illustrates the conflict between "mamacita" and her husband? A. "He worked two jobs. He came home ...
*February 12, 2015*

**Physics**

You are hitting a tennis ball against a wall. The 0.057-kg tennis ball traveling at 29 m/s strikes the wall and rebounds at the same speed. Earth is the object of reference. Determine the ball's change in momentum (magnitude).
*February 12, 2015*

**Physics**

An old building is being demolished by swinging a heavy metal ball from a crane. Suppose that such a 85kg ball swings from a 20-m-long wire at speed 10m/s as the wire passes the vertical orientation. What tension force must the wire be able to withstand in order not to break? ...
*February 12, 2015*

**Math**

It's not suppoesd to be a fraction!!
*February 12, 2015*

**Math**

What did he start with not left with plus he left with 120 dollars and he started with 3?I don't think that is resonable.
*February 12, 2015*

**Math**

How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer. The way you solved this problem was wrong.Aaron did not start out with ...
*February 12, 2015*

**Science**

How does the sporophyte generation of a plant differ from the gametophyte generation? Use the words spores, sperm cells, and egg cells in your answer.
*February 12, 2015*

**art**

Florida virtual school does not give art text books.
*February 12, 2015*

**art**

Ms. Sue not all of us have books that's why we come to this site. Thank you for all your help and all others that take the time to help us. Have a great day.
*February 12, 2015*

**art**

Please don't get mad at me. Could it be D?
*February 12, 2015*

**art**

What factor might motivate a museum to hastily restore art without considering whether or not the restoration good for the piece? A. a freshly-restored artwork will last longer B. a freshly-restored artwork is easier to display C. a freshly-restored artwork will not spread ...
*February 12, 2015*

**math**

I mean 7/28 to 3/7
*February 12, 2015*

**math**

120.25 + 7/28
*February 12, 2015*

**art**

I completely agree with Ms. Sue. :)
*February 12, 2015*

**art**

An archeologist wants to dig up the burial site of a group of ancient Native Americans, to preserve the artifacts in a museum. What is the drawback for Native Americans to preserving these burial artifacts in a museum? A. The artifacts may not be properly preserved by the ...
*February 12, 2015*

**Math**

How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
*February 12, 2015*

**Science**

Which of the following is true about diabetes? A. The pancreas overproduced glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduced glucose, and so insulin must be injected to increase glucose levels C. The pancreas overproduced insulin...
*February 12, 2015*

**math**

How much did Aaron start with? Aaron spent 3/7 of his money. He gave 3 of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
*February 12, 2015*

**physics**

an object is projected with a velocity of 10m/s from the ground level at an angle to the vertically, the total time of flight of projectile os 10secs. calculate angle when (g=10m/s) show workings
*February 12, 2015*

**Art**

No problem at all, tell me how it goes ;)
*February 12, 2015*

**Art**

Hi Callie! I believe it's C. Just make sure with your textbook like Ms. Sue suggested. :) Hope this helps! ;)
*February 12, 2015*

**math**

How much did Aaron start with? Aaron spent 3/7 of his money. He gave 1/4 of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
*February 12, 2015*

**Math**

How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
*February 12, 2015*

**Science**

Which of the following is true about diabetes? A. The pancreas overproduced glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduced glucose, and so insulin must be injected to increase glucose levels C. The pancreas overproduced insulin...
*February 12, 2015*

**chem**

How many grams of calcium chloride will be produced when 30.0g of calcium carbonate are combined with 14.0g of hydrochloric acid?
*February 12, 2015*

**Chemistry **

Given that the initial rate constant is 0.0190s−1 at an initial temperature of 22 ∘C , what would the rate constant be at a temperature of 190 ∘C for the same reaction described in Part A? Activation Energy 32.4kJ/mol
*February 12, 2015*

**Algebra 2**

The area of a dining room is 160 square feet. a rectangular rug placed in the center of the room is twice as long as it is wide. If the rug is bordered by feet of hardwood floor on all sides, find the dimensions of the rug.
*February 12, 2015*

**math**

If r = 4 cm, h = 18 cm, and a = 7 cm, what is the volume of birdseed that the bird feeder can hold at full capacity?
*February 12, 2015*

**physics**

A frictionless incline is 5.00 m long (the distance from the top of the incline to the bottom, measured along the incline). The vertical distance from the top of the incline to the bottom is 4.03 m. A small block is released from rest at the top of the incline and slides down ...
*February 12, 2015*

**S.S**

Among the first settlers of the Oregon country, after trappers, were the ____ . A.Missionaries B. Merchants C. Schoolteachers D. farmers I think its A 2.What north american territories did Russia control in the early 1800s? A. California and Nevada B. the territories from ...
*February 12, 2015*

**Geometric progression**

The Product of three Consecutive terms of a G.P. is -64 and the first term is four times the third. find the number.
*February 12, 2015*

**Physics**

Two identical resistors are connected in parallel across a 26-V battery, which supplies them with a total power of 9.8 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance of the other resistor remains unchanged...
*February 12, 2015*

**Chemistry 2 **

Calculate the molality, molarity, and mole fraction of FeCl3 in a 25.7 mass % aqueous solution (d = 1.204 g/mL).
*February 12, 2015*

**physics**

A 14-Ω loudspeaker, a 9.0-Ω loudspeaker, and a 3.2-Ω loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. Answer: (1/14)+(1/9)+(1/3.2...
*February 12, 2015*

**math**

7^-(1/5) / 7^-(7/5) * 7^3/5 can be simplified as 7^a/b where a and b are positive integers. find a*b-a answer: 7^-(1/5) / 7^-(7/5) * 7^3/5 7^5/7(5/7) * 7 ^3/5 <- plz explain this part? 7^(8/5-3/5)=7*5/5
*February 11, 2015*

**Physics**

The rms current in a 41-Ω resistor is 0.69 A. What is the peak value of the voltage across this resistor? Answer: V(rms) = A(ohms)(sqrt2)
*February 11, 2015*

**chem**

How many chloride ions are present in 65.5 mL of 0.210 M AlCl3 solution
*February 11, 2015*

**physics**

A box of mass 26 kg is hung by a thin string from the ceiling of an elevator. The string can hold up to 276.1 N and will break under larger tension force. How much can the maximum acceleration of the elevator be going upward so that the string does not break and continues to ...
*February 11, 2015*

**Find the domain of the function**

Find the domain of the function. f(x)=8+3/x^3
*February 11, 2015*

**rubidoux high school**

y+60
*February 11, 2015*

**Algebra **

x^1/2 - 7x^1/4 + 12 = 0
*February 11, 2015*

**Science**

Are there more hours of daylight in the summer than in the winter
*February 11, 2015*

**Science**

What do angiosperms produce in order to protect their seeds?
*February 11, 2015*

**Physics**

If the drive chain exerts a force of 2090 N at a radius of 5.00 cm, what is the angular acceleration of the wheel? (b) What is the tangential acceleration of a point on the outer edge of the tire? (c) How long, starting from rest, does it take to reach an angular velocity of ...
*February 11, 2015*

**math **

The demand function for a product is p=32−8q where p is the price in dollars when q units are demanded. Find the level of production that maximizes the total revenue and determine the revenue. q= units R= $
*February 11, 2015*

**Chemistry**

The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 8.30 g of naphthalene (C10H8) in 320. g of benzene (Kf of benzene = 4.90°C/m)?
*February 11, 2015*

**science**

plz help
*February 11, 2015*

**science**

describes the movement of an object at rest if no outside forces act on it? a; it will move due to inertia b; gravity will eventually cause it to move c; it will stay at rest due to inertia d; it will stay at rest due to gravity...
*February 11, 2015*

**Math - Answer Check**

Write the composition function and then find the value. f(x) = 2x+3 g(x) = x^2 k(x) = square root(x - 4) 1. g(k(x)) g(k(20)) My answer: Function is x - 4, the value is 16. 2. f(g(x)) f(g(2)) My answer: Function is 2x^2 + 3, the value is 11.
*February 11, 2015*

**math**

I tries to figure out the answer you give but i just got more confuse.. where it 7^-(1/5)
*February 11, 2015*

**math**

what is mean when the question ask find a*b-a ?
*February 11, 2015*

**math**

7^5/7(5/7) * 7 ^3/5 <-- I don't understanding this part?
*February 11, 2015*

**math**

7^-(1/5) / 7^-(7/5) * 7^3/5 can be simplified as 7^a/b where a and b are positive integers. find a*b-a i'm not good when it come to negative exponent, plz help!
*February 11, 2015*

**government**

Who are the top 5 most important members of the Executive Office of the President?
*February 11, 2015*

**Physics**

Why does the potential inside a solid conductor not change?
*February 11, 2015*

**Physics**

Does the potential inside a hollow conductor change and why?
*February 11, 2015*

**marketing**

the first step in taking control of your finances is
*February 11, 2015*

**Geography**

new found planet
*February 11, 2015*

**Calc**

Find the solution to e^x = 2+2x
*February 11, 2015*

**science**

vertical velocityinitial=35sin35 horizoal velocity=35cos35 time in air consider vertical hf=hi+vi*t-1/2 g t^2 0=0+35sin35*t-4.8t^2 solve that with the quadratic equation.. max height is when vv=0 vv=vi*35sin35-gt=0 solve for time at max height, then maxhdight=35sin35*t-1/2 g t^2
*February 11, 2015*

**science**

A golf ball leaves the club 35m/s at an teta of 35 degree above the horizontal . Find a) range b) maximum height reached c) time of flight
*February 11, 2015*

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