57 Answered Questions for the topic Variation

Variation

02/25/17

Variation problem
if z varies jointly as x and y, and z = 6 when x=3 and y=4, find z when x=5 and y=6
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Variation

02/25/17

Variation problem
if y varies inversely as x, and y = 24 when x=4, find y when x=12
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Variation

02/25/17

Algebra Question
If y varies directly as the square of x, and y=12 when x=3, find y when x=6
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Variation

12/07/16

The resistance of a wire varies directly with its length and inversely with the square of its diameter. If 100 feet of wire with diameter 0.01 inch has a
resistance of 10 ohms, what is the resistance of 100 feet of the same type of wire if its diameter is 0.02 inch? Round to the nearest hundredth. the resistance is ___ohms.
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Variation

12/07/16

The frequency of an electromagnetic wave varies inversely with the wavelength. If a wavelength of 200 meters has a frequency of 800 kilocycles per second.
what frequency will be associated with a wavelength of 320 meters? ___ kilocycles per second will be associated with a wavelength of 320 meters.
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Variation

12/05/16

Inverse of a Square
y varies inversely as the square of z. If y = 48 when z=3, find y when z=4
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Variation

10/21/16

Variation Equation
If y varies directly as x and inversely as m squared and r squared, and y = 5/3 when x = 1, m = 2 and r = 3 find y when x = 3, m = 1 and r = 8
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Variation

09/17/16

Variation Questions
1. The number of hours required to build a fence is inversely proportional to the number of people working on the fence. If it takes 2 people, 99 hours to complete the fence, then how long will it... more
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Variation

09/17/16

Variation Questions
U is inversely proportional to h : ......   V varies jointly as m and j : .....   B varies directly as h: .....
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Variation

06/13/16

variation inversely
Find an equation of variation where y varies inversely as x and y = 7when x=14.
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06/02/16

Math question: If X decreases by...
Given the equation 5x+2y= 6   If x decreases by 4 units, what is the corresponding change in y?   If y decreases by 20 units what is the corresponding change in x?
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Variation

06/01/16

A hard problem
The cost to rent a 200 square foot storage unit is $60 per month. The cost to rent a unit that is 325 square feet is $160 per month. Write an equation to represent the cost to rent a unit that is X... more
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Variation

05/16/16

I am having alot of trouble with these problems please help!!
The speed v of a gear varies inversely as the number of teeth t. If a gear that has 72 teeth makes 24 revolutions per minute (rpm), how many revolutions per minute will a gear that has 18 teeth make?
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Variation

05/16/16

I am having alot of trouble with these problems please help!!
The income (I)of a computer analyst varies directly as the number of hours h worked. If the analyst earns $352 for working 8 h, how much will the analyst earn for working 14 h?
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02/14/16

Solve applications of variation equations.
The distance d that a spring will stretch varies directly as the mass m of an object hanging from the spring. If a 6-Kg mass stretches the string a distance of 30-centimeters. Find the variation... more
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Variation Linear Functions

10/27/15

If you were to graph 2 linear functions on same coordinate plane, why would they not meet other than the origin?
I having trouble explaining how. I think I can see it but I can't put it into words.
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Variation Algebra 2 Equations

04/27/15

Write the equation in the form y=k/x
Write the equation in the form y=k/x y=6/5x  
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03/30/15

The electrical resistance R of a wire varies directly as its length l and inversely as the square of its diameter d.
(a) Express R in terms of l, d, and a constant of variation k.    I got the equation R=k(l/d^2) which was correct.   (b) A wire 90 feet long of diameter 0.015 inch has a resistance of 25 ohms.... more
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Variation

03/18/15

what is k?
The resistance Rof a wire varies directly with its length Land inversely with the square of its diameter d.Write an equation for the constant of variation in terms of R,L,and d.Use kas a constant... more
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Variation

03/18/15

If income tax varies directly with income, and a person earning $30,000 per year pays $8,400 in taxes, how much will a person earning $42,000 per year pay?
If income tax varies directly with income, and a person earning $30,000 per year pays $8,400 in taxes, how much will a person earning $42,000 per year pay?
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Variation

03/18/15

what is the resistance?
The power in an electric circuit varies inversely with the resistance. If the power is 1,200watts when the resistance is 12ohms, find the resistance when the power is 2,400watts.The resistance is
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Variation

03/18/15

Find the distance (in feet) the car moves when 189kW of power is delivered for 90s.
The power Pthat must be delivered by a car's engine varies directly as the distance dthat the car moves and inversely as the timetrequired to move that distance. To move the car 2,000ft in 75s, the... more
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Variation

03/02/15

find how many men are needed
The number of hours h that it takes m men to assemble x machines varies directly as the number of machines and inversely as the number of men. If four men can assemble 12 machines in four hours,... more
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Variation Algebra

02/19/15

Variations
At 9:45 Margie threw a ball upwards while standing on a platform 65 ft above the ground. The trajectory after t seconds follows the equation: -0.8t^2+56t+65. A)What will be the maximum height of... more
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Variation

11/01/14

The load L, in pounds, on a certain sail varies directly as the square of the wind speed v, in miles per hour. If the load on a sail is 560 lb when the wind spe
The load L, in pounds, on a certain sail varies directly as the square of the wind speed v, in miles per hour. If the load on a sail is 560 lb when the wind speed is 20 mph, what is the load on the... more
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