Monday

February 27, 2017
Number of results: 42,431

**Calculus**

The slope of the line tangent to the curve xy+(y+1)^2=6 at the point (2, 1) is

*November 30, 2014 by James*

**math**

For what values of a and b is the line 4x + y = b tangent to the parabola y = ax2 when x = 5?

*January 9, 2016 by Kyle*

**Math**

Find the y-intercept of the tangent line to y=-0.2/ã(6+5x) at (2.5,-0.0464990554975277) Thanks

*March 3, 2016 by Niki*

**Math**

What is the slope of the tangent line to the graph at f(x)=x^2-5 at the point (2,-1)?

*January 12, 2017 by hhhhh*

**algebra**

Simplify: sqrt()80/16 a) sqrt()5/4 b) sqrt()4/5 c) sqrt()5 d) sqrt()4 a

*June 5, 2010 by Ami*

**algebra**

Simplify: 3 sqrt () 2 + 5 sqrt () 2 a) 8 sqrt () 2 b) 15 sqrt () 2 c) 16 d) 16 sqrt () 2

*June 9, 2010 by ami*

**algebra**

Simplify: 2 sqrt (3) + 4 sqrt (3) a) 18 b) sqrt (9) c) 8 sqrt (3) d) 6 sqrt (3) d

*June 18, 2010 by anthony*

**algebra**

simplify: sqrt (25) / (16) a) 5/4 b) sqrt (5)/(4) c) sqrt (5)/ sqrt (4) d) 16 sqrt (5) / 4

*June 22, 2010 by sean*

**algebra**

simplify: sqrt (7) / (9) a) sqrt 7 b) sqrt (63) / 3 c) sqrt (63) / 3 d) sqrt (7) / (3)

*June 23, 2010 by ant*

**algebra**

simplify: sqrt (3/8) a)3/4 b) sqrt(3) / 2 sqrt(2) c) 3/ sqrt (2) d)sqrt(6/4)

*June 24, 2010 by ant*

**algebra**

simplify: sqrt (7/9) a0 sqrt (7) b) sqrt (63/3) c) sqrt (63/3) d) sqrt (7/3) d

*June 24, 2010 by anthony*

**algebra**

simplify: sqrt(24) a) 6 sqrt (2) b) 4 sqrt (6) c) 4 sqrt (2) d) 2 sqrt (6) d

*June 24, 2010 by anthony*

**calculus**

Find a number x0 between 0 and pi such that the tangent line to the curve y = sin x at x = x0 is parallel to the line y = -x=2. I get that for both lines to be parallel to each other their slopes need to be the same. I found -1/2 = cos(x) but I get stuck here. What exactly am...

*December 1, 2012 by asdf*

**maths, please help!**

I need help solving this: 6x^2-x-12=0 I usually could do this yet i have completely forgotten what i need to do seeing as there is a number infront of the x^2 This equation is of the general form a x^2 + bx + c = 0 The solution is always x = [-b +/- sqrt (b^2 - 4ac)]/(2a) = [1...

*February 22, 2007 by elle*

**Math**

Write an equation in the indicated form for each statement described below. (A graph shows two lines intersecting at x=-2 and y= 1 in a tilted X shape) A. Write an equation in slope-intercept form for the line parallel to the red line and going through the point (3,5). B. ...

*February 25, 2017 by Mark*

**math,correction**

can someone correct this for me plz.... Write the equation of the line L satisfying the given geometric conditions. (#1)L has y-intercept (0, -3) and is parallel to the line with equation y = (2)/(3)x + 1. My answer:

*January 22, 2007 by jasmine*

**algebra**

Find an equation of the line containing the give pair of points. (-2, -1), and (-7, -4). The equation of the line in slope - intercept form is y= I 've tried this problem and can not seem to get could please help me.

*March 16, 2009 by Johnnie*

**algebra**

Find an equation of the line having slope and containing the given point. M=4/5, (3, -7) The equation of the line is Y= I have tried to work this problem and could not get the answer. Please help me.

*March 19, 2009 by Johnnie*

**Math**

Write the equation of the line that satisfies the given conditions. Express the final equation in standard form. Contains the point (-7, 2) and is perpendicular to the line 4x − y = 4

*September 30, 2015 by kylee*

**Algebra**

Write an equation of the line that passes through (9,6) and is perpendicular to the line whose equation is y = -1/3x +7 y-y1=m(x-x1) y-6=3(x-9) y-6=3x-27 y=3x-21

*February 16, 2008 by Jon*

**Algebra II**

write an equation for the line that passes through (0,7) and is perpendicular to the line whose equation is y=1/2x-1

*November 10, 2008 by Sha*

**Geometry**

The line L1 has the equation y=3x. The line L2 is perpendicular to L1 and passes through the point P(0,0). Write an equation of L2

*March 17, 2010 by Anonymous*

**algerbra 1**

i wrote an equation of a line that passesthrough the point (2,-3) and has a slope of -3 which equation represents my line?

*July 2, 2010 by jamyrrah*

**algebra**

find the equation for the line that passes through the point (-5,-1) and that os parallel to the line with the equation -x+2y=5

*July 7, 2010 by cm*

**algebra**

Need help on the following questions. What is the y-intercept of a line with the equation (y - 3) = 5(x + 2) and What is the slope of a line with the equation y = -x + 6

*April 27, 2011 by Nyk*

**algebra**

find an equation of the line containing the given pair of points. (-9,0) and (0,4) what is the equation of the line? y=?

*November 21, 2011 by amy*

**algebra**

find an equation of the line containing the given pair of points. (-9,0) and (0,4) what is the equation of the line? y=?

*November 21, 2011 by amy*

**Calculus**

Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?

*April 8, 2012 by Samantha*

**College Algebra**

write an equation for the line that passes though (3,3) and is parallel to the line with equation 4x+y-5=0

*March 6, 2015 by meri*

**AlGEBRA 2 (check answers plz)**

What is the equation of the line that has a slope of -2 and a y-intercept of -7? y = -2x - 7 <-- y = -7x - 2 y = -2x + 7 y = -7x + 2 or <-- Find the equation of the line that has a slope of 4 and contains the point (-4, 1). y = 4x + 1 <-- y = 4x - 8 y = 4x - 15 y = 4x...

*February 2, 2017 by Debbie*

**math!!**

I have no idea how to do this!!! Let ΔABC be a triangle such that b=sqrt(3), c=sqrt(10), and cos(B)=3/sqrt(10). Find all possible values for side length a. Please show work

*September 28, 2016 by PLEASE HELP ASAP*

**Math**

What's the slop of the line whose equation is 8y = 7 - 2y? the slope would be zero. if you add '2y' to the other side, then your equation will be 10y=7. If you divide 10 on both sides, the new equation will be y=7/10. That will be a straight line, so the slope will be zero.

*November 5, 2006 by Cynthia*

**Algebra**

for each equation tell weather its graph is a horizontal or a vertical line y=-4 write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of the given equation (1,3);y=3x+2

*December 20, 2016 by Pokemoncharzard*

**calculus**

Integrate: dx/sqrt(x^2-9) Answer: ln(x + sqrt(x^2 - 9)) + C I'm getting the wrong answer. Where am I going wrong: Substitute: x = 3 * sec t sqrt(x^2 - 9) = sqrt(3) * tan t dx = sqrt(3) * sec t * tan t Integral simplifies to: sec t dt Integrates to: ln|sec t + tan t| + C t = ...

*December 31, 2007 by mathstudent*

**Algebra2**

Find the polynomials roots to each of the following problems: #1) x^2+3x+1 #2) x^2+4x+3=0 #3) -2x^2+4x-5 #3 is not an equation. Dod you omit "= 0" at the end? #2 can be factored into (x+1)(x+3) = 0, so the roots are x=-1 and -3. #1 Use the quadratic equation for the roots [-b...

*May 13, 2007 by Haylee*

**math**

I need help with "write in equation in slope-intercept form for the line that is parallel to to the given line line and and that passes through the given point. y=1/2x=5;(4,-3) How do you find a line that is perpendicular. Please and thank you! :)

*February 8, 2014 by Kerri*

**precalculus**

Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slope-intercept form. (c) Graph both of these lines on the ...

*November 11, 2011 by tinathomas*

**Trig Practice**

Find the exact value of sinA where a=9 and b=10 and angle C is a right angle. a. sin A= 9/sqrt 181, cos A= sqrt 181/10 b. sin A= sqrt 181/9, cos A= 10/sqrt 181 c. sin A= 9/sqrt 181, cos A= 10/sqrt 181 d. sin A=sqrt181/10, cos A= 9/sqrt 181

*February 3, 2017 by Anonymous*

**Calc**

"Consider the surface given by 4x^2-y^2+5z^2-10z=55. a) Find all points on the surface at which the tangent plane is parallel to the plane 8x+y+15z=1. b) Pick one of these points and give the equation of the tangent plane to the surface at that point." Could someone help me ...

*March 1, 2011 by Anonymous*

**Calculus PLEASE check my work ,**

1.) which of the following represents dy/dx when y=e^-2x Sec(3x)? A.3e^-2x sec(3x) tan (3x)-2e^-2x Sec(3x)<<<< my choice B.)3e^-2x sec(3x)tan (3x)-2xe^-2x sec(3x) C.)3e^-2x sec(3x)tan (x)-2e^-2x Sec(3x) D.)3e^-2x sec(3x)tan (x)-2xe^-2x sec(3x) 2.)calculate dy/dx if...

*March 12, 2011 by anon*

**algebra 2**

Not sure if either one of these answer are correct to simplify the sqrt for 24 1) 24 = 6 x 4 square root of 24 = square root of 6 x 4 2 root 6 2) sq root 24 = sq root (4x6)= sqrt 4 x sqrt 6= 2sq root 6=4.89898 3) Square root of 24 =sqrt (24) =sqrt(4*6) =2sqrt(6) = 2*square ...

*April 27, 2011 by plese help me*

**Physics**

Hello everyone, I have made measurements of the periods of a pendulum attached to a stationary point at a certain height h. When plotting the periods as a function of the square root of the length minus the height it gives us a straight line. I now need to prove that this line...

*January 7, 2013 by Tom*

**parallell and perpendicular lines**

please check my homework given P(7,2) and the line y + 3x=7 find the equation for the line parallel line: y+3x+7 y=-3(x-7) +7 y-2=-3x+21+7 y=-3x+28+2 y=-3x+30 perpendicular line: y-2=1/3(x-7) +7 y-2=1/3x-7/3 +21/3 y-2==1/3x + 14 y=1/3x + 14 +2 y=1/3x +16

*February 19, 2012 by luckybee*

**math**

Dave is going to leave academia and go into business building grain silos. A grain silo is a cylinder with a hemispherical top, used to store grain for farm animals. Here is a 3D view, a cross-section, and the top view. If Dave is standing next to a silo of cross-sectional ...

*April 13, 2014 by hyun*

**PreCalculus**

Ok I know that the slope of a straight line is the same thing as x with a dot aboce it or simply the first derivative of x on the unit circle tangent gives you the slope of the reference line right? This can be expressed using the notation expressed above but how? Thanks!

*December 1, 2009 by Joe*

**calculus**

the point (1,9) lies on the graph of an equation y=f(x) for which dy/dx=4x(sqrt(y)) where x is greater than or equal to 0 and y is greater than or equal to 0 a)6 b)4 c)2 d)sqrt(2) e)0

*February 20, 2012 by victoria*

**Calculus**

So here is the question: Find and equation of the tangent line to the graph: 4)f(x)=e^(2x) passing through the point (0,0) I find derivative being f'(x) =2e^(2x) Then m = f'(0) = 2 put into point slope formula: (y-y1)=m(x-x1) y-0 = 2(x-0) which comes out to y=2x 0=2x ; so the ...

*October 5, 2014 by Tom*

**Math**

The graph of the equation y=4-x consists of all the points in the coordinate plane that satisfy the equation. List 5 points that satisfy y= 4-x. Also, what do you think is the minimum number of points you need to plot in order to draw the graph of y=4-x. Please explain Set y=0...

*November 21, 2006 by victoria*

**Physics**

A mass m is hanging on a string that passes over a pulley and is then attached to another mass 3m that is resting on a horizontal table (along with the pulley). Neglect friction. Mass m is held montionless and is then released. When it has fallen a distance h, it will have a ...

*January 12, 2010 by Bob*

**Calculus**

2sin(2theta) + sqrt(3) = 0 interval (0,2pi) How do I solve this? I thought about maybe subtracting the sqrt(3) from both sides, so that i would have 2sin(2theta) = -sqrt(3) Then maybe dividing by two? sin(2theta) = -sqrt(3)/2 Am I doing anything right here? It's been a long ...

*September 20, 2011 by Hannah*

**Calculus**

a)The curve with equation: 2y^3 + y^2 - y^5 = x^4 - 2x^3 + x^2 has been linked to a bouncing wagon. Use a computer algebra system to graph this curve and discover why. b)At how many points does this curve have horizontal tangent lines? Find the x-coordinates of these points. I...

*October 31, 2010 by Chelsea*

**Physics**

An umbrella with a diameter of 1 m turns 22 rev every 44 seconds. If it's 1.5 m from the ground, calculate the time it takes for a drop to reach the ground and the distance away from the umbrella a person should stand so as to not get wet. For this problem I made a = (0, -g) ...

*November 9, 2012 by Leslie*

**math**

Find the distance between (–3, –2) and (1, 4). (1, 4) - (–3, –2) = (1- -3, 4 - -2) = (1+3, 4+2) = (4,6) |(4,6)| = sqrt[4^2 + 6^2] = sqrt[52] = 2 sqrt[13]

*July 8, 2007 by steph*

**Math**

Simplify the expressions. 1. sqrt(40/169) 2. sqrt(18/13) 3. sqrt(45/32)

*October 21, 2008 by Kiley*

**Math**

Solve: sqrt(7x-5)+sqrt(15x+4)=sqrt(30x+31)

*October 27, 2008 by Shawn*

**Math**

Solve: sqrt(7x-5)+sqrt(15x+4)=sqrt(30x+31)

*October 27, 2008 by Chris*

**Math**

Simplify - sqrt 12b^2 * 2 sqrt 8b. I got -8 sqrt 6

*May 12, 2009 by Angie*

**Calculus**

Differentiate the given function. f(t)= 4(sqrt(t^3)) + 14/sqrt(t) - sqrt(17) f'(t)=?

*February 11, 2010 by Kassie*

**college 209**

multiply (2 sqrt 7 -5 sqrt 3)(8 sqrt7-5 sqrt 3)

*January 16, 2011 by Anonymous*

**Class 12th : Calculus**

If y = sqrt(x-1)+sqrt(x+1),prove that sqrt(x^2-1)dy/dx=1y/2

*June 9, 2011 by Akash*

**Math (Reflection across y=x line)**

Here's a question that I am having trouble with: What is the resulting equation when y=x^3+2x^2 is reflected across the y=x line? I know that I need to switch the y with the x's in the equation, so is the answer they're looking for simply x=y^3+2y^2 or do I need to simplify ...

*April 5, 2011 by Randy*

**maths**

What would the equation be of a straight line that passes through the points (1,1) and (3,3) ?? write the equation for the line: y= mx+ b put the first set of points in.. 1=1m + b then the second equation 3=3m + b subtract the equations... 2=2m so you know m. Put that into ...

*June 9, 2007 by kat*

**MAT221**

consider the line 8x-5y=-4 find the equation of the line that is perpendicular to this line and passes through the point (-4,-4) find the equation of the line that is parallel to this line and passes through the point (-4, -4) i keep getting different answers on the ...

*June 29, 2014 by Kia*

**AP CALC**

The function g is given by the formula g(x)= ∫[0,x/2] e^(-t^2)dt. An equation for the tangent line to the graph of g at the point x=1 is a) y-0.461=0.779(x-1) b) y-0.461=0.389(x-1) c) y-0.461=1.558(x-1) d) y-0.461=0.184(x-1) e) y-0.461=0.368(x-1) I took the derivative ...

*February 22, 2015 by Rachel*

**math**

find the eq to the tangent line to the curve y=x^3 g(x) at x=1 if g(1)=2 f(1)=3 f'(1)=1 g'(1)=-2 i cant understand how the answer is y=4x-2

*May 15, 2008 by sam*

**Samuel**

Near x=0, the tangent line approximation gives e^(−3x)

*March 1, 2010 by Nathan*

**Math**

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

*June 30, 2010 by Eileen*

**Calculus**

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

*July 15, 2010 by Eileen*

**Math**

Determine the slope of the tangent line to the curve y=2x^3-3x^2+1 at the point (1,0)

*July 15, 2010 by Eileen*

**math**

At what values of x does the function f(x)= x(x-4)^4 have a horizontal tangent line?

*December 2, 2010 by Keith*

**calculus**

At what values of x does the function f(x)= x(x-4)^4 have a horizontal tangent line?

*December 2, 2010 by Keith*

**Implicit Differentation**

Find the slope of the tangent line to the curve at (2,1). x/y +x^2y^2=6

*December 2, 2010 by Michael*

**Calculus**

Find the slope of the tangent line to the ellipse (x^2)/4 + (y^2)/9 = 1 at the point (x,y)

*February 23, 2011 by Lisa*

**Math Calc**

Find the tangent line to the curve (y-x)^2= 2y+4 at the point (2,6)

*August 18, 2011 by Lalee*

**Calculus**

If the tangent line to y = f(x) at (4, 3) passes through the point (0, 2), find f(4) and f'(4).

*October 18, 2011 by Jake*

**Calculus**

If the tangent line to y = f(x) at (4, 3) passes through the point (0, 2), find f(4) and f'(4).

*October 18, 2011 by Jake*

**CALC**

Find the tangent line to the ellipse defined by 3x^2 + 5y^2 = 17 at the point (-2, 1).

*December 28, 2011 by TIFFANY*

**calculus**

find the slope of the tangent line at the point P(1,1) on the graph of e^x-y=2x^2-y^2

*January 17, 2012 by becca*

**calculus**

Let f(x)=(x^2)+x+14. What is the value of f(x) for which the tangent line to the graph of y=f(x) is parallel to the x-axis?

*January 26, 2012 by tom*

**math**

find tangent line to the circle x^2 + y^2=100 at point (-6,8)

*February 5, 2012 by Declan*

**Calculus**

what is the slope of the line tangent to the curve (/x)^2 at point (4,16) * (/x)= the squareroot of x

*February 24, 2012 by Jesse Stone*

**calculus**

find the slope of the tangent line at the point (1,2) for the ellipse 2x^2+3y^2=14 y'(1) = ??

*April 13, 2012 by Mhd*

**Calculus grade 12**

find the slope of the tangent line to y^4 = 3x^2 - 2x at the point (1,1)

*June 21, 2012 by Albert*

**calc**

Find the slope of the tangent line to the graph y = x-3 at the point (0.5, 8)

*December 9, 2012 by Meera*

**Math (Help please)**

Find the points on y=(-x^2+4x-3)^3 that has a horizontal tangent line.

*January 16, 2013 by Aa*

**Maths (Tangents and Normals)**

curve y = (x^2) - 4x + 5 is tangent perpendiculat to the (line = 2y + x - 7 = 0)

*January 16, 2014 by Sykox*

**Calculus**

Find the slope of the tangent line to the ellipse x^2/4 + y^2/16= 1 at the point (x,y)

*March 23, 2014 by Rowhan*

**Calculus I**

For what values of a and b is the line -4x+y=b tangent to the curve y=ax^3 when x=4? Can anyone give me the hint?

*April 19, 2016 by Anonymous*

**calc**

Find the tangent line to the curve (x^2/16)-(y^2/9)=1 at the point (4sqrt2,3)

*December 15, 2016 by Darrel*

**Calculus-derivatives**

At what points on the graph of f(x)=6x^2+4x-9 is the slope of the tangent line -2?

*February 8, 2017 by Angel*

**maths**

which solution is the correct for this equation 4x^3 - 3x = 15 -1.8, -1.7, -1.6, -1.5, 1.5, 1.6, 1.7, 1.8 ?? What is your thinking, and why? Have you considered graphing y= 4x^3 -3x -15 ? Kat, what level of study are you at. This is an equation which can be "solved" only by ...

*May 13, 2007 by kat*

**Math-Geometry**

I'm having trouble with these two questions about slopes and equation of a line: (A)-Find the slope of each segment (B)-Write an equation of the line that is determined by each pair of points 1. (0,0) and (6,-4) 2. (-3,2) and (7,-4) Thank you!

*February 20, 2010 by Sammi*

**radical expression**

What is the radical expression of 1. (11)^-3/2 2. 2^(-1.5) Thanks I will do one. the exponent 3/2 means sqrt of something cubed. So (11)^-3/2 = 1/(11)^ 3/2 =1/ sqrt 11^3 = 1/ sqrt (11^2 * 11)= 1/ (11 sqrt 11)

*January 26, 2007 by Jen*

**geometry**

What is an equation of the line that passes through (-3,6)and is parallel to the line with the given equation: y=-x-5

*October 28, 2010 by noah*

**Math**

Write an equation of the line with y-intercept 4 that is parallel to the line whose equation is y=3x+2

*February 29, 2012 by amy*

**algebra**

If a line L1 has equation y = mx + b, where m and b are constants with m ¹ 0,then an equation of a line L2 perpendicular to L1 has the form , where C is a constant.

*September 5, 2013 by Milly*

**UNISA**

The equation of a line L1 is 2y-5x-1=0. Line L2 is parallel to L1 and passes through (2,1/4). What is the equation of L2, please? help me.

*May 23, 2016 by khanyee*

**Algebra**

First the slope. Perpendicular to a slope of -3 means a line slope of 1/3 y= 1/3 x + b. Now put in the x,y point and solve for b. write the equation of a line that has a y intercept (0,5) and is perpendicular to the line with equation y=-3x+1

*March 11, 2007 by bobpursley*

**Algebra**

Write the equation of the line satisfiying the givrn geometric conditions. L has y-intercept (0, 2) and is perpendicular to the line with equation 2x-3y=6 Here is my answer please check. -2/3x-2 I can see it is wrong just by looking at the slope. The perpendicular line has a ...

*April 25, 2007 by jessica*

**ALG 2!!!**

Write an equation of a line with an undefined slope and passing through the point (-2,4). Hint: To answer this question, consider the type of line that has an undefined slope. Then write an equation of that line using the values in the ordered pair.

*November 22, 2012 by tyneisha*