07/03/16

what is the dilution for a fixed volume of polluted water if you slowly add an equal volume of pure water assuming perfect mixing?
what is the dilution for a fixed volume of polluted water if you slowly add an equal volume of pure water assuming perfect mixing at all times
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07/02/16

How to simplify
how to simplify -√100?    Could not not find the square root it should be read as negative square root of 100.
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07/01/16

Which of the following pairs of numbers cointains like fractions?
A. 5/6 and 10/12 (Can't be A. because I got it wrong)   B. 3/2 and 2/3   C. 6/7 and 1 5/7   D. 3 1/2 and 4 4/4    
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06/30/16

Finding an equation that passes through the points
Find an equation of a line that passes through (10,1) and (-6,9) please help
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06/30/16

F is jointly proportional to r and the third power of s
(F = 3564 when r = 12 and s = 3.)
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06/29/16

Solve for t...
Solve for t where   d= vt + at^2/2
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06/29/16

Please help me with a velocity question
A ball is thrown vertically upward from the ground with an initial velocity of 114 ft per sec. Use h = −16t2 + v0t + h0.Step 1 of 2: Determine when the ball will reach its maximum height. 
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06/28/16

A boat travels 62km in 2 hours going up travels 94km going in the same amount of timewhat is the rate of the boat in water and what is the rate of the current
need an answer ASAP :)
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06/28/16

Can anyone explain this problem with steps:
(49/25)^3/2
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06/28/16

Find how many quarts of 5?% butterfat milk and 2?% butterfat milk should be mixed to yield 30 quarts of 3?% butterfat milk.
help asap in need of serious help
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06/28/16

one number is four less than a second number five times the first is 7 more than 6 times the second find the numbers
i need help badly have no idea how to do this
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06/28/16

How many people were in the group
A group of people agree to share the cost of a 15000 repair bill to an inn.Before the repairs are made,two more people join the group and enter the agreement.As a result,each person's share is... more
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06/27/16

Word problems
two hanger rods are connected to a box beam that supports a concrete deck. Forces acting on the rods sometimes push in the same direction and sometimes push in opposite directions.  The forces x... more
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06/27/16

Factoring question.
(x-1)^3—8   i tried solving but ended up getting (x+1)^2 but its wrong
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06/27/16

Word problem solving
the voltage between two points in an electric circuit is 60v the contract point of a voltage divider is placed between these two points so that the voltage is divided into two parts one of these... more
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06/27/16

Word problems
a space shuttle is used to launched either in the same direction or the opposite direction of the shuttle and the speed in kilometers per hr of both objects can be found by solving the equations.... more
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06/27/16

Through (-6,3) and parallel to 3x-9y=14
linear functions and slope 
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06/26/16

A magnet can exert a force on a moving charged particle, but it cannot do work on it (changing its kinetic energy). Why not?...
A magnet can exert a force on a moving charged particle, but it cannot do work on it (changing its kinetic energy). Why not? (a diagram might help).
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06/26/16

Derive F = BIL by starting with a single charge formula F = qvB and recognizing that current is simply I = Q/t...
Derive F = BIL by starting with a single charge formula F = qvB and recognizing that current is simply I = Q/t.
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06/26/16

Find the slope and the y-intercept of the line: 6x + 3y= -3
finding slope and y-intercept
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06/26/16

Physics getting the force
A 2m crowbar is employed to lift a 200 kg load. What force must a man apply to one end of the crowbar when a stone (acting as a fulcrum) is placed under the crowbar 20 cm away from the end on which... more
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06/26/16

use version 2 of the chain rule to calculate the derivative of the following function
y=cos^4 *x+sin^4 *x
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06/25/16

Find the zeros and their multiplicity of the polynomial function f(x) = -3x2 (x-3) (x+4)3 (x2+ 5)
this is pre calculus. need help understanding this.
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06/23/16

Science Question
if Chris started running at 0m/s and ended with 2.9m/s, what is his acceleration? If his his mass is 82kg what is his force? His time is 2 hours
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06/23/16

A 4.0 cm object is 6.0 cm from a convex mirror that has a focal length of 8.0 cm. What is the height of the image produced by the mirror?
A 4.0 cm object is 6.0 cm from a convex mirror that has a focal length of 8.0 cm. What is the height of the image produced by the mirror?
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