Tuesday

June 30, 2015

June 30, 2015

Total # Posts: 1,853

**Physics**

A motorcyclist who is moving along an x-axis has an acceleration given by a=(6.47-2.15t) for 0 >= t <= 6.0 s, where a is in m/s2 and t is in seconds. At t = 0, the velocity and position of the cyclist are 3.20 m/s and 7.30 m. For the time interval from 0 >= t <= 6....
*June 29, 2015*

**Algebra 2**

I'm confused on how to do this. 1.) Show that f(x)=x^4 -2x +8 has nonzero constant fourth-order differences. SIMPLIFY THE EXPRESSION: (HOW?) 2.) 8^log(8)^x eight log root 8 ^x (here it is written if you can't understand the actual expression. It is definitely hard ...
*June 18, 2015*

**physcis**

1) A student jumps 0.85 meters straight up, on level ground. (a) How long is the student in the air? (b) For how long is the student within 0.10 meters of the top of the jump? (c) What fraction of the time is the student in the top 0.10 meters of the jump?
*June 11, 2015*

**math please help ms sue i wana pass math**

????????????????
*May 20, 2015*

**Chemistry**

When 821 J of heat is added to 3.6 g of an oil at 21 °C, the temperature rises to 85 °C. What is the specific heat (cp) of the oil in J/(g°C)?
*May 12, 2015*

**Statistics**

A survey was conducted to determine the number of hours people listen to the radio. While most of the listening is in the car, it turns out that the mean is 2.5 hours with a standard deviation of 0.75 hours. Find the probability that the sum of 80 values is greater than 190.
*May 11, 2015*

**physics **

an object of mass mf to fall a distance L, giving its energy to raise the bus of mass 0.50 kg. The focal point of the lab was the effect of an inclined plane (a ramp). What is the effect of a ramp on the force necessary to raise an object a vertical distance H? What is the ...
*May 11, 2015*

**Math**

excuse me, I got the units of Area incorrect. It should be cm^2. So 78.5 cm^2.
*April 30, 2015*

**Math**

C=2pi*r solve for r... 31.4=6.28r r=4.9974 A=pi*r^2 A=78.5 centimeters.
*April 30, 2015*

**physics**

just a question out of curiosity... Why is it that when you stretch a rubber band between your thumbs the same length both sides of the rubber band make two different sounds? Is it because the sound waves are at different velocities or frequencies?
*April 30, 2015*

**Chemistry**

What is the empirical formula of a magnesium oxide compound that contains 0.2717 moles of Mg and 0.1811 moles of O?
*April 21, 2015*

**Physics**

At the State Fair you see people trying to win a prize at a game booth. They are sliding a metal disk shaped like a puck up a wooden ramp so that it stops in a marked zone near the top of the ramp before sliding back down. You estimate that you can slide the 'puck' at ...
*April 3, 2015*

**Math**

The volume of a rectangle prism with a square bases is 5880 cubic inches and it's height is 30 inches. Find the side length of the square base? 5880\30 = 196 square = side length of 14
*April 2, 2015*

**MATH**

1 ton = 2000 pounds
*March 31, 2015*

**Geometry **

In triangle ABC, points X and Z are on line AB and Y is on line AC such that line XY is parallel to line BC and line ZY is parallel to line XC. If AZ = 8 and ZX = 4, then what is XB?
*March 29, 2015*

**maths**

A rectangular plate has a length of (18.0 ± 0.2) cm and a width of (9.8 ± 0.1) cm. Calculate the area of the plate, including its uncertainty. Correct all results to significant figures. Please help someone
*March 20, 2015*

**finance**

You want to have $2 million in real dollars in an account when you retire in 30 years. The nominal return on your investment is 8 percent and the inflation rate is 5.3 percent. What real amount must you deposit each year to achieve your goal? (Do not round intermediate ...
*March 14, 2015*

**Algebra u rgent**

Thanks steve!
*March 12, 2015*

**Algebra u rgent**

Find the slope of the line that goes through the following points. x:0 1 2 3 y:-4 -3 -2 -1 a-1 b1 c-4 d-7 x:-1 0 1 2 y:-4 -1 2 5 a-5 b-3 c-1/3 d3 Answers: 1) /?? 2) 3 PLEASE HELP
*March 12, 2015*

**life orientation**

low self esteem, depression, anxiety, lack of self confidence in trusting your decisions and living by them,lack of ability of making decision
*March 8, 2015*

**art**

3.Which is the definition of the term contemplate? A.to quickly complete a task B.To consider throughtfully C.a new style of art D.to consider throughtfully over an extended period of time
*March 6, 2015*

**art**

2.An artist loved to work with smooth, flowing paint that had vibrant color. Knowing that she had many months to finish a commision her best choice for a material would be: A.tempera paint B.old paint c.acrylic paint D.watercolor
*March 6, 2015*

**art**

not jake
*March 6, 2015*

**art**

you guys suck
*March 6, 2015*

**art**

LOL, how am I rude, I just replied with the same respect she gave me. She didn't help very much and did a lousy job. But whatever the helpers on here stink anyways so see ya!
*March 6, 2015*

**art**

There is no need to be rude. Yes my book does not display any helpful information but I find there no need for you to come out so rude to me. Also you could have explained how to answer them instead of just telling me to find them on google. I have already finished questions 6...
*March 6, 2015*

**art**

Thank you!
*March 6, 2015*

**art**

I understand number 10 but I just can't get the other ones. Our book doesn't really help us too much I think number 10 is d but the others I am unsure about.
*March 6, 2015*

**art**

I just need the answers for my homework
*March 6, 2015*

**art**

Mrs.Sue can you help!!!
*March 6, 2015*

**art**

7.The right of artists to speech, art, or other means to communicate opinions without restraint is best described as A.an american value b.expressionism c.the free market d.freedom of speech 8.A visitor walks into a art show, quickly views the work, and is gone within 5 ...
*March 6, 2015*

**art**

4.the orientalizing period was characterized by? A. greeks borrowing images from oriental cultures B.artwork with lots of shading and perspective c.oriental cultures borrowing images from greek art D.artwork with many reds and golds 5.Frank lloyd wright's architecture is ...
*March 6, 2015*

**art**

2.An artist loved to work with smooth, flowing paint that had vibrant color. Knowing that she had many months to finish a commision her best choice for a material would be: A.tempera paint B.old paint c.acrylic paint D.watercolor 3.Which is the definition of the term ...
*March 6, 2015*

**art**

1.An art historian notices that two neighboring cultures use a similar style when sculpting horses. This is likely an example of A. Shares interests in the equine form B. Baroque style C. Cultural exchange D. Orientalizing Style
*March 6, 2015*

**math **

Check plz Jake Vought a hammer for $11.70 and four pieces of paneling for $7.95 each. If the sales tax rate is 6%_ how much change will he receive from $50.00 7.95*4=31.80 11.70+31.80=43..50 43.50*.06=2.61 43.50+2.61=46.11 50.00-46.11=3.89
*March 2, 2015*

**math**

Check plz There are shirts on sale for 25% off. The sale price is 12.75. What is the original price. $12.75 *.25=3.19 $12.75+3.19=15.94
*March 2, 2015*

**math**

Tom's town has a population of $25,000. If the population increases. 12% next year,how many people will be living there.
*March 2, 2015*

**Math**

Find the volume of the solid generated by rotating the area bounded by y=x^2 and x=y^2 about the x-axis.
*March 1, 2015*

**Trigonometry**

Sarah is wrong because her answer is for Cos(125) not Sin(125... Sin(125) equals .81915204
*March 1, 2015*

**Algebra**

(16x^5*y^10/81xy^2)^(3/4) please explain how to do this, I am at a complete loss
*March 1, 2015*

**Algebra**

If a quadratic has a vertex at (-2,2) and passes through (-1,0) what is its equation in standard form? A. y = -2(x-2)^2 + 2 B. y = -2(x+2)^2 + 2 C. y = -(x+2)^2 - 2 D. y = (x+2)^2 + 2 Is the answer B?
*February 17, 2015*

**Chemistry**

consider the following reaction at 298K 4Al(s)+3O2(g) yields 2Al2O3(s) delta H= -3351.4 Kj find delta S sys find delta S surr find delta S unvi
*January 29, 2015*

**art**

thanks
*January 23, 2015*

**art**

Ancient native Americans chose willow strips to make baskets because there were easy to bend and to. A. to find B. waterproof C. multi colored D. rare
*January 23, 2015*

**art**

ok I will thanks
*January 23, 2015*

**art**

Ancient native Americans chose willow strips to make baskets because there were easy to bend and to. A. easy to find B. rare and valuable C. multi colored D. waterproof I chose A is this correct
*January 23, 2015*

**art**

ok thanks
*January 22, 2015*

**art**

A sculptor creates a bust of a famous politician out of marble and places it in the outdoor courtyard of the capitol building. Why did he chose marble?
*January 22, 2015*

**Math **

we have 2 coins: coin 1 comes up with the probability of tails of 2/3 while coin 2 comes up with the probability of tails of 1/3 you dont know which is which so you pick one up at random and flip it . If its tails, you guess that the coin you picked up is coin 1 else you guess...
*January 19, 2015*

**calculus **

If 600 cm2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter without commas. For example, if the answer is 2,000 write 2000.
*January 19, 2015*

**physics**

Please someone should help me with this. An elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is ?
*January 16, 2015*

**physics**

Please how do i solve this? A body of mass 36kg falls through a viscous liquid which offers a drag of 260N on the body. The upthrust on the body at terminal velocity is?
*January 16, 2015*

**Physics (is my work correct????)**

A tension force of 2.50 N acts horizontally on a 2.00 kg block. The block accelerates at 0.750 m/s2. What is the force of kinetic friction? 2 x .75, = 1.5N (2.5 - 1.5) = 1N?????
*January 15, 2015*

**math**

yes
*January 15, 2015*

**math**

I meant wendays homework
*January 15, 2015*

**math**

on Tuesday, elena completed 20 of her math homework in 36 minutes. At that same rate, how long will it take her to complete 35 items for wendy's math home work
*January 15, 2015*

**Physics**

A 0.047 kg golf ball is driven from the tee with an initial speed of 54 m/s and rises to a height of 23.2 m. What is its speed when it is 6.0 m below its highest point?
*January 14, 2015*

**Pre-Cal**

A wire 360 inches long is cut into two pieces. One piece is formed into a square and the other into a circle. If the two figures have the same area, what are the lengths of the two pieces of wire (to the nearest tenth of an inch)?
*January 12, 2015*

**chemistry **

what is the volume, in liter of 2.54 mol methane (ch4) gas? I've been stuck on this problem for hours, someone please help!
*January 4, 2015*

**Algebra**

Janice tosses a softball directly upwards with an initial velocity of 100 feet per second. Use the formula h = vt - 16t^2 to answer each question. a. When will the ball reach a height of 84 feet? b. When will the ball hit the ground?
*December 17, 2014*

**math**

Decide whether the each equation has one solution, no solutions,or infinitely many solutions. 1. 2(x-3)= 2X A.One solution B.No solutions C.Infinitely many solutions 2. 3(y-3)= 2y-9+y A.One solution B.No solutions C.Infinitely many solutions 3. 10x-2-6x = 3x-2+x A.One solution...
*December 17, 2014*

**Stupid Complicated English Grammar**

if this could be answered it would help man students. plz answer after you have submitted the activity
*December 16, 2014*

**Math **

Problem 6: Let a1,a2,.........a10 be an arithmetic sequence. If a1+a3+a5+a7+a9=17 and a2+a4+a6+a8+a10=15, then find a1.
*December 14, 2014*

**Algebra **

Let a1,a2,a3..... be an increasing arithmetic sequence of integers. If a4a5=13 what is a3a6?
*December 13, 2014*

**Algebra**

Solve for x>0 in the following arithmetic sequence 1^2,x^2,3^2.....
*December 13, 2014*

**Algebra **

The fifth term of an arithmetic sequence is 11. If the difference between two consecutive terms is 1, what is the product of the first two terms?
*December 13, 2014*

**Algebra**

No it is equal
*December 13, 2014*

**Algebra **

Find all values of t such that [t] =2t+3. If you find more than one value, then list the values you find in increasing order, separated by commas. The brackets represent the floor sign function.
*December 13, 2014*

**English**

did you read the book?
*December 9, 2014*

**Math **

Find the positive difference between two solutions to the equation ∛(4-(x^2/3)) = -2
*December 4, 2014*

**Math **

What is the sum of all values of x which |x-3|+|3-x|-1=?
*December 4, 2014*

**AB Calculus**

For part 2 i got .17955, would this be considered correct?
*November 30, 2014*

**AB Calculus**

I figured out that part "A" is -3/8, but i can't figure out part 2, a or b. please explain and help. thanks. Sand is falling from a rectangular box container whose base measures 40 inches by 20 inches at a constant rate of 300 cubic inches per minute. a) how is ...
*November 30, 2014*

**CHem**

Iodine forms three compounds with chlorine. Choose the correct molecular shapes. ICl3 ICl5 ICl
*November 23, 2014*

**Math**

Our teacher hasnt taught us log, so how would I sove this problem?
*November 21, 2014*

**Math **

Suppose 81^x=64. What is 27^(x+1)?
*November 21, 2014*

**science**

Two train cars are connected to a locomotive as shown. Wach train has a force of kinetic friction equal to 50,000N. The locomotive pulls the two freight cars at a constant speed of 4.0m/s. Find the force of tension at each of the coupling points A & B.
*November 20, 2014*

**math**

HELP
*November 18, 2014*

**math**

?????????????????
*November 18, 2014*

**math**

Sorry i ment what is the total Weight.
*November 18, 2014*

**math**

Sam grew three pumpkins for the pumpkin growing contest.The pumpkins weighed 24 1/8 lb,18 1/2 lb, and 32 5/16 lb. Find the total cost of the pumpkins. I don't get it????
*November 18, 2014*

**Algebra - Can you PLEASE check - I"m stuck!**

Bob is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: F(N)=10(1.02)^n 1. Starting from 0 days, plug x-values into our function to find out how many days it takes for the plant to...
*November 17, 2014*

**Algebra - can you PLEASE double check my work?**

I'm confused what you mean by 3? I was thinking Irrational because you can not write as a ratio.??
*November 17, 2014*

**Algebra - can you PLEASE double check my work?**

Part A: Use the properties of exponents to explain why is called the fifth root of 18. 1. What property refers to roots and fractional powers? My Answer: Rule of exponents 2. How does it apply to 18^1/5? If you multiply 18^1/5 by itself 5 times, you get 18. Part B: The length ...
*November 17, 2014*

**Physics**

A brick of mass 2.3 kg is lifted to a height of 1.9 m. How much gravitational potential energy is added to the brick? Acceleration due to gravity is g = 9.8 m/s2.
*November 16, 2014*

**chemistry**

45.1
*November 11, 2014*

**Physics**

A pendulum consists of a 2.1 kg stone swinging on a 3.6 m string of negligible mass. The stone has a speed of 7.9 m/s when it passes its lowest point. (a) What is the speed when the string is at 60° to the vertical? (b) What is the greatest angle with the vertical that the...
*November 7, 2014*

**Physics**

A block of mass m = 800 g is released from rest and slides down a frictionless track of height h = 57.0 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring compressed by 2.49 cm ...
*October 24, 2014*

**Chemistry/mine engineering**

why are you solving for temp final??? we are looking for mass of the rod...?
*October 23, 2014*

**math**

Jack used the digits 4,5,6,7 to make the largest and smallest numbers possible. Then he subtracted the 2 numbers and came up with 2,997. What did Jack do wrong?
*October 23, 2014*

**Chemistry**

Calculate the molarity of 25.00ml H2SO4 solution if 32.48ml of 0.1068M NaOH is required to titrate? Balanced equation is H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2 H2O (l)
*October 22, 2014*

**chemistry**

write the balanced molecular and net iconic equations for the reaction between aluminium metal and silver nitrate. Identify the oxidation and reduction half-reaction
*October 19, 2014*

**calculus**

find the x-coordinate of all points on the curve y=12Xcos(5X)-(30*sqrt3*X^2) + 16, pi/5<X<2pi/5 where the tangent line passes through the point (0,16), (not on the curve) I have absolutely no idea how to solve this one
*October 19, 2014*

**chemistry**

what volume of 0.150M Li2Sr solution is required to completely react with 130ml of 0.150M Co(NO3)2
*October 17, 2014*

**Chemistry**

It is SrCl2 not SrLi2
*October 17, 2014*

**Chemistry**

If 4.7M SrLi2 solution is diluted to 45L, what is the molarity of the diluted solution?
*October 17, 2014*

**Calc**

this problem has been a challenge for me.
*October 16, 2014*

**Calc**

Hi Reiny. According to my webwork. The answer it not correct. Any additional help?
*October 16, 2014*

**Calc**

Please help with implicit differentiation. Find dy/dx for 4x^3+x^2y-xy^3 = -4
*October 16, 2014*

**math**

Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function. Data Demand x Revenue y 1 0 100 2 4 139.2 3 8 176.8 4 12 212.8 5 ...
*October 15, 2014*