10/07/15

decay type of question
under certain water conditions, the free chlorine in a swimming pool decomposes according to the law of uninhibited decay. after shocking his pool, Ben tested the water and found that the free... more
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09/27/15

Word prolem
A candy distributor needs to mix a 10% fat-content chocolate with a 60% fat-content chocolate to create 100 kilograms of a 55% fat-content chocolate. How many kilograms of each kind of chocolate... more
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09/27/15

A candy distributor needs to mix a 10% fat-content chocolate with a 40% fat-content chocolate to create 200 kilograms of a 13% fat-content chocolate. How many k
A candy distributor needs to mix a 10% fat-content chocolate with a 40% fat-content chocolate to create 200 kilograms of a 13% fat-content chocolate. How many kilograms of each kind of chocolate... more
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09/27/15

Please help I'm so confused!
Find the molar mass of PCl3? 
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09/23/15

~(~(p v s ))
I am very lost with these questions please help
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09/23/15

Solving nonlinear equations for both real and imaginary numbers
9x^4-28x^2+3=0
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09/22/15

how do I write an equation for a word problem
you burn approximately 230 calories less per hour if you ride a bike versus go on a run.  Joe went on a two hour run plus burned an additional 150 calories in his warm up.  tommy went on a four... more
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09/18/15

Express your answer as a chemical formula.
hydroiodic acid:   chloric acid:   nitrous acid:   H2CO3:   HClO4:   CH3COOH:
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09/18/15

Express your answer as a cheemical formula
sodium phosphate:   zinc nitrate:   barium bromate:   iron(II) perchlorate:   cobalt(II) hydrogen carbonate:   chromium(III) acetate:   potassium dichromate:
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09/18/15

find the average speed of the boat relative to the water
Meg rode her boat upstream a distance of 72 miles and then rowed back to the starting point. The total time of the trip was 18 hours. If the rate of the current was 3 mph, find the average speed of... more
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09/06/15

How many ten dollar bills are in the cash register?
A cash register contains only five dollar and ten dollar bills. It contains three times as many five dollar bills as ten dollar bills and the total amount of money in the cash register is $675. How... more
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08/29/15

how do i solve this
An environmental problem. You work at a chemical plant that disposes of waste oil by burning it. The Environmental Protection Agency (EPA) has told you that you can burn the oil if it is 1%... more
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08/29/15

How do you solve these molar problems?
Please explain thoroughly how to solve these . Thank you ! 1.) Sucrose has a molecular mass of 342 daltons. To make a 2-molar (2 M) solution of sucrose, _____. a) stir 342 g of sucrose in water to... more
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08/23/15

How long will it take the to be 2250 kilometers apart?
Two planes have an airport traveling in opposite directions. One plane travels at 470 kilometers per hour and the other at 430 kilometers per hour. How long will it take the to be 2250 kilometers... more
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08/23/15

How do you find six sets of points in the first quadrant of the unit circle with a radius of 3/2
List 6 points (x,y) that lie on the unit circle (circle with center at the origin and radius 1) and also are in the first quadrant. Plot the points. Use your answer from the first question to find... more
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08/12/15

Volume generated by rotating
What is the volume of the solid made by rotating the region bounded by y=x^2+1 and y=-2x+3 about the x - axis. Please show the process using (i) disks/washers, (ii) cylindrical shells
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08/12/15

Finding distance using Angles and Sine
Two weather tracking stations are on the equator 159 miles apart. A weather balloon is located on a bearing of North 38 degrees East from the station and on a bearing of North 14 degrees from the... more
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08/12/15

trent invested money at 6% and $300 less at 8%. his total annual interest income is $116. how much did trent invest at 6%?
if you could list the steps to help me understand it that would be great. thanks
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08/12/15

How do you integrate a radical function such as f(x) = 7squareroot 4x5 - 36square root x5 - 114 square root x + 33 square root x? describe your startegy.
Calculus Question
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08/12/15

Please if someone can help me with solving this problem..
a projectile that is fired vertically into the air with an initial 120 ft. per second can be modeled by the equation s=120t-16t^2. In the equation , s is the distance in feet of the projectile... more
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08/05/15

Prostate Cancer doubles in mass every four years. If a cancer is .7 mm in diameter in the spring of 2008, what...
Prostate Cancer doubles in mass every four years. If a cancer is .7 mm in diameter in the spring of 2008, in what year will it be 2 mm in diameter?   The year should only be represented by it's... more
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08/03/15

mg=mv^2/r Solve for v
I need help with this problem, I dont know how to do it step by step
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08/01/15

Find the exact value of the expression whenever it is defined
sin[2 arccos(−3/5)]cos(2sin-124/25)tan(2 tan-1 3/7)   b. sin(tan-1 -√3) cos(sin-1 1) tan(cos-1 0)  )3/7sin 2... more
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07/29/15

What dimensions should the rug have?
A person wants to buy a rug for a room that is 23 ft wide and 30 ft long. She wants to leave a uniform strip of floor around the rug. She can afford to buy 588 square feet of carpeting. What... more
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07/29/15

What are the points of discontinuity for...
  a. no points of discontinuityb. x = 2c. x = 2, x = –2d. x = –2
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