Thursday

July 24, 2014

July 24, 2014

Number of results: 1,009

**algebra**

suppose that S varies directly as the 2/5 power of T, and that S=8 when T=32. Find S when T=243.
*January 26, 2014 by Anonymous*

**algebra**

If f(x) varies directly with x, and f(x) =45 when x=9, find the value of f(x) when x=3 answer choices are: A.5 B.9 C.15 D.27
*February 19, 2014 by Ayriana*

**Algebra 2- Variation**

If y varies jointly as x squared and the radical of z, and y = 49 when x =2 and z=25, determine y when x=-1 and z =16
*March 5, 2014 by Amy*

**Math**

if y varies directly as x find the direct variation equation for the situation: y=20 and x=16
*October 19, 2007 by George*

**college algebra**

Solve each variation problem. n varies directly as q, and n= 39 when q=3. Find n when q=8.
*April 23, 2010 by BJ*

**Algebra 2**

Find rarition constant and an equation of variation where y varies directly as x and y =60 when x = 10.
*October 23, 2010 by Anonymous A*

**Algebra 2**

M Varies jointly with A and T and inversley with H. Write and equation that represents the relationship.
*December 14, 2010 by Karl*

**Please Help!! Math**

If c varies directly as the square root of d, and c = 14 when d = 64, find c when d = 324.
*June 5, 2013 by Jnr John*

**math**

write the direct variation equation for the following:y varies directly with x and y=60 when x=10
*June 11, 2013 by lina*

**math(algebra)**

If f(x) varies directly with x, and f(x) = 45 when x=9, find the value of f(x) when x=3 answer choices are A. f(x)=8x B. f(x)=4/3x C. f(x)=6x D. f(x)=3/4x
*February 19, 2014 by Ayriana*

**algebra**

Determine whether y varies directly with x if so find the constant of variation k 3y=-7 x-18
*March 4, 2014 by snow*

**maths**

body of weight is inversely propotional to square of its distance from center of earth,radius of the earth is 6380 km, how much 80 kg man weigh 1600 km from the surface of earth
*February 16, 2014 by Anonymous*

**chem**

If the pressure of the original doubles does that mean the original will decrease by 1/2? Because pressure and volume are inversely proportion to each other?
*March 22, 2012 by bkue*

**Science**

Please Check 1.) If a quantity increases as a second quantity increases and decreases as the second quantity decreases the two quantities are said to be *a)Directly proportional b)Inversely proportional c)Completely unrelated d)Blue and red 2.) If a quantity increases as a ...
*July 13, 2010 by Matt *

**math**

I am having trouble with this problem, thanks! If y varies jointly as x and the cube of z, and y=378 when x=4 and z=3, find y when x=9 and z=2 .
*September 30, 2008 by cal*

**Math**

Suppose y varies directly with x and y=12 when x=6. Write an equation realting x and y. Please help, do not understand.
*May 20, 2009 by Gaby*

**pre-calc graphing**

Sketch the graph of f(x)= [ (1/2) tanx + 1 ] as x varies from pie/2 to 3pie/2
*August 2, 2009 by kenny*

**physics**

how can you say that thickness of a material varies as it is a constant value. discuss with in 50 words.
*May 15, 2011 by diwakar*

**MAT/117**

The weight of an object varies on different planets. Solve the equation w=Cr^-2 for r
*September 20, 2011 by Anonymous*

**Algebra II**

If y varies jointly as w and x, and y is 483 when x is 742 and w is 383, find y when x is 274 and w is 756.
*November 21, 2011 by Joe*

**Algebra II**

If y varies jointly as w and x, and y is 483 when x is 742 and w is 383, find y when x is 274 and w is 756.
*November 22, 2011 by Ashley*

**Math**

R varies jointly as S and the square of T. If R is 32.4 when S=0.2 and T=9, find R when S=0.5 and T=5. I believe the answer is R=25, could someone check this for me?
*March 15, 2012 by Allie*

**Math**

Finally, the toe of the stick varies in : A. length B. height C. width D. Area
*July 8, 2012 by Amy*

**Calc**

Find the constant of proportionality for the following situation: "y is jointly proportional to x and z and inversely proportional to w." w=2, x=5, y=4, and z=9 So i think the equation is y=xz/w But what is the constant of proportionalit supposed to mean?
*October 2, 2011 by Jake*

**math**

1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where C is a constant, and...
*April 8, 2009 by tera*

**geometry**

what equation represents the relationship of perimeter of a square varies directly as the length of it's side ?
*February 18, 2012 by tom*

**math**

find the equation that meets the given conditions: a varies directly as the square of r and a=9 pie when r=3
*June 7, 2012 by mathstuck*

**Reading/Math**

Does the toe of a hockey stick varies in length, height, width or area?
*July 8, 2012 by Emma*

**Math**

If y is directly proportional to x and inversely proportional to z^2, by what value is y multiplied if x is doubled and z is multiplied by 3
*June 18, 2012 by Kelly*

**math**

I am also having trouble with this one, thanks! If y varies jointly as x and the cube root of z, and y=120 when x=3 and z=8, find y when x=4 and z=27.
*September 30, 2008 by cal*

**ecology**

true or false, the temp. varies greatly throughout the year in a tropical rain forest?
*October 29, 2008 by tania*

**ecology**

true or false, the temp. varies greatly throughout the year in a tropical rain forest?
*October 29, 2008 by tania*

**ALGEBRA 1**

Determine the equation of combined, then solve for the missing value. Variation x varies directly with y and z. x=5 when y=10 and z=5. find x when y=20 and z=10
*September 30, 2012 by Bobby Jones*

**algebra**

Determine whether y varies directly with x. If so find the constant of variation k and write the equation. x y 7 11 8 13 9 15 10 17 Help please!
*November 10, 2012 by Shadrick *

**Algebra II**

The number of oscillations made by a pendulum in a given time is inversely proportional to the length of the pendulum. A certain clock with a 20-in.-long pendulum is losing 11.00 min/day. Should the pendulum be lengthened or shortened, and by how much?
*November 16, 2011 by Arielle Guidry*

**Algebra II**

The number of oscillations made by a pendulum in a given time is inversely proportional to the length of the pendulum. A certain clock with a 20-in.-long pendulum is losing 11.00 min/day. Should the pendulum be lengthened or shortened, and by how much?
*November 21, 2011 by Joy*

**math**

Determine the equation of joint variation. Then solve for the missing value. x varies directly with y and z. x = 400 when y = 8 and z = 10. Find x when y = 10 and z = 12.
*June 21, 2011 by tyler*

**life science**

true or false? The temperature varies greatly throughout the year in a tropical rain forest.
*February 8, 2012 by selina*

**physics**

The vector position of a 3.75 g particle moving in the xy plane varies in time according to the following equation. At the same time, the vector position of a 5.20 g particle varies according to the following equation. For each equation, t is in s and r is in cm. Solve the ...
*November 27, 2011 by carlton*

**algebra 1**

Suppose y varies directly as x and that y = 21 when x = 3. Find the value of y when x = 5. Would I be wrong if I said y = 35? In using y = kx with the 21 and the 3 k = 7. So if y = 35 and x = 5 then k = 7. Am I correct or am I way off course?
*March 15, 2009 by Dippy*

**college algebra**

Write formula that expresses the relationship described by each statement. Use k for the constant in each case. m varies directly as p.
*April 23, 2010 by BJ*

**Algebra II**

Assuming that y varies directly as the fourth power of x, fill in the missing values in the table of ordered pairs. x 18.3 74.5 ? y 29.6 ? 155
*November 16, 2011 by Arielle Guidry*

**algebra**

Determine whether y varies directly with x. If so find the constant of variation k and write the equation. x y 7 11 8 13 9 15 10 17 Can someone please help me and explain
*September 19, 2012 by brandon*

**physics**

The position of an object connected to a spring varies with time according to the expression x = (6.2 cm) sin (9.1ð t). Find (a) the period of this motion
*November 26, 2012 by Anonymous*

**maths, variations checking!**

question: given that y is inversely proportional to (x-1), A) express y in terms of x and a constant k b) give that y=5 when x=3, find x when y=25 answer: A)y=-k(x-1) y=-kx+k B)y=5, x=3, k(constant)=3x5 k=15 25=-15x+15 10=-15x x=-10/15 is this correct? i'm not too sure about ...
*December 18, 2007 by hayley*

**Calculus**

1) yy'-e^x= 0, and y=4 when x=0 means that: A)y=x-lnx^2+4 B)y^2=4x^2+3 C)y=-2x+1/2x^3 D)y^2=2e^x+14 E)1/2ln|x^2+4|+6 2) The rate of change of P with respect to t is directly proportional to (10-t) and inversely proportional to the cube root of P. The differential equation that...
*May 9, 2014 by Samantha*

**Math**

The time it takes Javier to go to school and his walking rate are inversely proportional. If it takes him 12 mins walking at 3 mph how long does it take if he walks at 4 mph?
*April 10, 2012 by Lizzy*

**Math-URGENT,**

Given that y varies directly with x, write a direct variation equation that relates x and y. x=1/3 <---(fraction), y=2 **Provide an explanation as well, please.
*October 24, 2011 by Izzy*

**College math**

I really need to know the answer to this extra credit problem. Please help! A quantity, W, is directly proportional to X and the square of Y and inversely proportional to the cube of Z. W=3 when X=4, Y=2 and Z=4. What is the value of W when X=8, Y=9 and Z=6? Give answer to 3 ...
*April 6, 2013 by Lorie*

**Precal**

.Pump Jack Problem: An oil well pump jack is shown in Figure 3-9f. As the motor turns, the walking beam rocks back and forth, pulling the rod out of the well and letting it go back into the well. The connection between the rod and the walking beam is a steel cable that wraps ...
*November 8, 2011 by Matt*

**Physics **

If the force of friction is constant, prove that the stopping distance of a car on a level road varies directly with the square of the initial speed.
*October 6, 2010 by Shaila*

**Chemistry**

What happens to the equilibrium constant when a catalyst is added to the reaction mixture. A. Increase B. Decrease C. Does not change D. Varies E. None of the above I chose c
*November 11, 2011 by Monique *

**algebra**

Determine whether y varies directly with x, If so, find the constant of variation k and write the equation. x y 4 6.4 7 11.2 10 16 13 20.8 Would like for someone to explain if possible
*September 10, 2012 by jay*

**Math**

1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where C is a constant, ...
*October 21, 2011 by Algebra*

**Math**

1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where C is a constant, and...
*October 21, 2011 by Student 315*

**Math**

5).Hat size are determined by the measuring the circumference of the head in either inches or centimeters. Use ratio and proportion to complete the following table. Hat size Head circumference Head Circumference 7 ½ to nearest 1/5 inch to the nearest centimeter 7 3/8 23 3/5 60...
*May 28, 2010 by Mickey*

**Chemistry**

What is he differeence between a graph representing data that are directly proportional and a graph of data that are inversely proportional?
*August 31, 2007 by Amanda*

**algebra**

Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
*January 26, 2009 by bob*

**math**

Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
*January 26, 2009 by bob*

**Biology!!**

The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.
*January 26, 2011 by NEEDS HELP!!*

**physics**

A 2.6-kg particle moving along the x axis has a velocity of +1.7 m/s as it passes through the origin. It is subjected to a single force, Fx, that varies with position, as shown below.
*March 26, 2013 by Brandon*

**Physics RC**

how does the circuit potential difference,v, across the capacitor varies with R(resistance)in an RC circuit??
*December 1, 2007 by AllyKat*

**MATH Algebra**

How do I find the variation constant and an equation of variation where y varies directly as x and y =70 when x=7
*September 12, 2009 by Anonymous*

**Math**

If b varies directly as the square root of w and b equals a negative 24 when w equals 36, what is w when b is equal to 1/8?
*September 16, 2012 by Trey*

**Algebra**

Find the variation constant and an equation of variation where y varies directly as x and y = 20 when x = 10
*April 17, 2008 by Mary*

**Algebra**

Find the variation constant and an equation of variation where y varies directly as x and y=50 when x=10
*August 12, 2010 by Tim*

**algebra**

find the variation constant and an equation of variation where y varies directly as x and y = 54 when x =x6
*April 15, 2012 by Terry*

**Math**

Find the value of y for a given value of x, if y varies directly with x. If y = –252 when x = 84, what is y when x = 74?
*September 1, 2012 by Kelsey*

**Math**

Write an equation: x varies directly as y and inversly directly to the cube of Z
*January 21, 2013 by Sara*

**Algebra (please help!)**

If y varies directly as x and y is 3 when x is 8, what is the constant of the variation? I don't understand what they are asking and how to solve this. Please help if you can! Thank you so much! :)
*May 29, 2009 by Faith*

**Math **

If y varies directly as x and y=3 when x=10, find x when y=8? Can you please show me step by step solution for this problem?
*January 10, 2013 by HELPP!!!*

**physics**

why weight of gold varies at 2 different places like panna and ladakh (physics)
*June 12, 2013 by rita*

**Chemistry**

H6P6: Urbium Oxide First Part of the Question: Urbium (Ur) is an upscale element found in big cities. Its oxide (UrO2) is not very stable and decomposes readily at temperatures exceeding 66∘ C. The figure below shows how the rate of reaction varies with the concentration...
*November 29, 2012 by Odesa*

**Algebra PLEASE HELP!**

If y varies directly as X and X=88 when Y= 110, find X whaen Y=70 Set up a proportion: 88/110 = X/70. solve for X.
*June 11, 2006 by Nicole*

**math**

can someone correct this for me. Find the constant of variation k. m varies directly with n; m=144 when n = 8 my answer: 144 = k (8) --- ---- 8
*December 22, 2006 by jasmine20*

**Algebra**

The circumference,y, of a circle varies directly with the diameter,x, of the circle. Write an equation if y=44cm when x=14cm.
*May 17, 2010 by Austin*

**algebra**

Find the value of y for a given value of x if y varies directly with x if y=2.52 when x=8.4,what is y when x=2.7 thanks
*March 4, 2014 by snow*

**PHysics**

The vector position of a 3.65 g particle moving in the xy plane varies in time according to the following equation. r1 = <(3i+3j)t + 2jt^2> At the same time, the vector position of a 5.60 g particle varies according to the following equation. r2 = <3i - 2it^2 - 6jt>...
*February 16, 2010 by engmath*

**AL**

The instructions to my book work says for the data in each table, tell whether y varies directly with x. If it does write an equation fo rthe direct variations. Well how do you do that exactly. Thanks you for your help.. Please help me.
*May 12, 2009 by Math*

**Statistics**

The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. the value of P(X<10)is?
*March 13, 2010 by Anonymous*

**Statistics**

The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. the value of P(X<10)is?
*March 13, 2010 by Anonymous*

**psychology**

research over the last decade has shown that the percentage of high school students engaging in sexual intercourse a)is on the rise b)has remained the same c)is on the decline d)varies
*July 12, 2010 by tee*

**Stats **

The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is
*March 29, 2014 by Tracy *

**Phisic mechanic**

An applied force varies with position according to eq. Fx = 3x3 - 5, where x is in m, and Fx in N. What is the work of this force on a body that moves from x to x = 4 m = 7 m?
*October 4, 2010 by cls*

**algebra**

Show all steps Find the value of y fora given value of x if y varies directly with x If y =-252 when x=84, what is y when x=74?
*March 11, 2014 by snow*

**physics**

how much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15 Celsius in the winter to 41 Celsius in the summer?
*July 17, 2012 by gen*

**math**

x is partly constant and partly varies as y, when y=2,x=0 and when y=6,x=20.find x when y=3
*January 15, 2014 by adeola*

**physics/chem**

what is the relationship between density and specific heat capacity? and why? i thought when density increase specific heat increase but it says that it is inversely proportional. thank you
*December 1, 2010 by lizzy*

**Math-PLEASE. HELP.**

Given that y varies directly with x, write a direct variation equation that relates x and y. x=1/3 <---(fraction), y=2 **Provide an explanation as well, please.
*October 24, 2011 by Izzy*

**math**

The volume V of a pyramid varies jointly as the area of the 1. ________________________ base B and the height h, and V=24 ft3 when B=12 ft2 and h=6ft. Find B when V=54 ft3 and h=9 ft.
*April 28, 2013 by mad*

**algebra**

If the voltage V, in an electric circuit is held constant,the current,I,is inversely proportional to the resistance,R. If the current is 490 milliamperes when the resistance is 5 ohms,find the current when the resistance is 35 ohms.
*December 6, 2010 by jitka*

**algebra**

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
*March 23, 2010 by Ross*

**algebra**

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
*March 23, 2010 by Ross*

**college**

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
*July 15, 2010 by cyn*

**Math **

Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that ...
*September 25, 2010 by tina*

**Algebra 2**

The frequency of a radio wave is inversely proportional to the wavelength. If a wave 250 m long has a frequency of about 1200 kHz, what is the approximate length of a wave with a frequency of 800 kHz? A. 167 m B. 258 m C. 325 m D. 375 m
*March 28, 2011 by Lauren*

**algebra**

Show all steps Determine whether y varies directly with x if so find the constant of variation k and write the equation? X line is y line is 4. 6.4 7. 11.2 10. 16 13. 20.8
*March 11, 2014 by snow*

**Physics**

Two colliding objects exert equal and opposite forces on each other (Newton's Third Law). However, acceleration experienced by an object is inversely related to its mass: the smaller the mass, the larger the acceleration for a given force (pp. 49-50). Therefore the motorcycle ...
*September 15, 2013 by Need help badly*

**math 117**

Can some help me with this appendix please. Thank you Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object ...
*July 16, 2010 by c.g.*

**ENGLISH!**

In what part of speech is "concert" being used as? "Our share of the responsibility for what we do individually or in concert with others varies with social and political structures..."
*January 28, 2010 by Happy Face*

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