Friday

May 29, 2015

May 29, 2015

**Pre-Calculus**

Hello! I need help with these 2 questions: 1.) Describe how the graphs of f(x) = |2x| and g(x) = -|2x| are related. a.) All of these. b.) The graph of g(x) is a reflection of the graph of f(x) over the y-axis. c.) Non of these. d.) The graph of g(x) is a reflection of the ...
*Friday, September 26, 2014 at 8:19am*

**Calculus**

A man standing 9 feet from the base of a lamppost casts a shadow 6 feet long. If the man is 6 feet tall and walks away from the lamppost at a speed of 30 feet per minute, at what rate, in feet per minute, will his shadow lengthen?
*Thursday, September 25, 2014 at 11:55pm*

**calculus 1**

a ladder 20 ft. long rests against a vertical wall.If the bottom of a ladder slides away from the wall at a rate of 4 ft./sec, how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 12 ft. from the wall? x^2 +y^2 = 20^2 x^2 + y^2 = 400 ...
*Thursday, September 25, 2014 at 9:57pm*

**Calculus **

I am so lost, I have no idea what to do next. Find the equation of the tangent line to the graph at the indicated point f(x) =x^2 +x ; a=-1 I started out using f(-1)= (-1+h)-(-1)/h but i am so lost on what to do next. I have tried to look at examples in the book, but i do not ...
*Thursday, September 25, 2014 at 6:29pm*

**Calculus**

It is known that the quantity demanded of a certain make of portable hair dryer is x hundred units/week and the corresponding wholesale price is shown below where p is in dollars. p = sqrt(225 - 5x) The supplier will make x hundred units of hair dryers available in the market ...
*Thursday, September 25, 2014 at 2:09am*

**Calculus **

The following table shows the percentage of the U.S. Discretionary Budget allocated to education in 2003, 2005, and 2009 (t=0 represents 2000) Year t 3 5 9 Percentage p(t) 6.8 7 6.2 (a) Compute and interpret the average rate of change of P(t) (b) Over the period 2003-2009 (...
*Wednesday, September 24, 2014 at 8:18pm*

**Math-calculus**

At a certain point on the beach, a post sticks out of the sand, it's top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation d=40+60cos(PI/2(t-2)) where t is ...
*Wednesday, September 24, 2014 at 7:54pm*

**Calculus**

At what point does the normal to y=-5-1x+3x^2 at (1, -3 ) intersect the parabola a second time? Answer: Note: You should enter a cartesian coordinate. The normal line is perpendicular to the tangent line. If two lines are perpendicular their slopes are negative reciprocals -- ...
*Wednesday, September 24, 2014 at 6:20pm*

**Pre-Calculus**

Help please Find the equation, in standard form, of the line passing through the points (2,-3) and (4,2). 5x-2y=16 y=5/2x+8 5x+2y=16 2x-3y=9
*Wednesday, September 24, 2014 at 6:18pm*

**Pre-Calculus**

Help please What is the slope of the line x = 4? would it be undefined??
*Wednesday, September 24, 2014 at 5:25pm*

**Pre-Calculus**

Help please, am i correct? The border line of the linear inequality 4x-2y < 1 is solid. True False <--
*Wednesday, September 24, 2014 at 5:19pm*

**Pre-Calculus**

help please Identify the slope and intercept of the following linear equation. y=3/7x-5 Slope: 3/7; intercept: 5 Slope: -5; intercept: 3/7 Slope: 5; intercept: 3/7 Slope: 3/7; intercept: -5
*Wednesday, September 24, 2014 at 4:54pm*

**calculus**

Z=square root of(x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.
*Wednesday, September 24, 2014 at 12:07pm*

**Pre-Calculus**

help please in what form is the following linear equation written: 3x-2y=4 Slope-intercept Point-slope Standard Rise-run
*Wednesday, September 24, 2014 at 11:41am*

**Calculus I**

Suppose that the number of bacteria in a plate of food is given by N(T)= 10T^2 - 40T + 200, -1<=T<=20 where T is the temperature of the food in degrees Celsius. Suppose that the temperature of the food when it is left out on a picnic table is given by T(t)= 4t + 10, 0<...
*Wednesday, September 24, 2014 at 1:44am*

**calculus**

Find the interval [a, b] on which the function f(x) = 2 x3+3 x2−12 x+3 is decreasing. Enter your answer as: [a, b] for some constants a, b.
*Wednesday, September 24, 2014 at 1:41am*

**calculus**

Find the derivative of (6x^2+4y^2)/(3x+7y)=3 using implicit and quotients rule. Thank you!
*Tuesday, September 23, 2014 at 10:40pm*

**Calculus**

A sinusoidal section is to be built as part of a roller coaster track. The high point is h=27 m at a horizontal distance d=0 m. It has a low point at h=-3 m at d=50 m. a. Write an equation expressing h in terms of d. b. The lengths of the horizontal timbers used to build the ...
*Tuesday, September 23, 2014 at 7:42pm*

**Calculus**

Scorpion Gulch and Western Railway are preparing to build a new line through Rolling Mountains. They have hired you to do some calculations for tunnels and bridges needed on the line. You set up a Cartesian coordinate system with its origin at the entrance to the tunnel ...
*Tuesday, September 23, 2014 at 6:30pm*

**calculus**

Suppose that the number of bacteria in a plate of food is given by N(T)= 10T^2 - 40T + 200, -1<=T<=20 where T is the temperature of the food in degrees Celsius. Suppose that the temperature of the food when it is left out on a picnic table is given by T(t)= 4t + 10, 0<...
*Tuesday, September 23, 2014 at 5:48pm*

**calculus**

Suppose that the number of bacteria in a plate of food is given by N(T)= 10T^2 - 40T + 200, -1<=T<=20 where T is the temperature of the food in degrees Celsius. Suppose that the temperature of the food when it is left out on a picnic table is given by T(t)= 4t + 10, 0<...
*Tuesday, September 23, 2014 at 5:48pm*

**Calculus**

A spacecraft is in an elliptical orbit around the earth. At the time t=0 hours, it is at its apogee (highest point), d=1000 km above the earth's surface. It is at its perigee (lowest point) d=100 km above the surface 50 minutes later. a. Assuming that d varies sinusoidally...
*Tuesday, September 23, 2014 at 5:30pm*

**Pre-calculus/Trignometry**

Which of the following is a correct equation for the line passing through the point (-1,4) and having slope m = -3? A. y-4=-3(x+1) B. y=-3x+1 C. 3x+y=1 D. y=-1/4x-3
*Tuesday, September 23, 2014 at 4:23pm*

**Calculus I**

I have to determine if this function is either odd or even or neither. f(x)=x^3*abs(x^3) + x^3 I do not know how to approach this question as the absolute value is giving me trouble. Please help. Thanks.
*Tuesday, September 23, 2014 at 7:18am*

**College Pre-Calculus**

find a function m such that m(f) is the number of miles in f feet
*Tuesday, September 23, 2014 at 12:07am*

**Calculus**

At a certain point on the beach, a post sticks out of the sand, its top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation d=40+60cos(pi/6(t-2)) where t is the ...
*Monday, September 22, 2014 at 8:30pm*

**AP Calculus BC**

A giant soda glass is formed by rotating the graph of f(x)= .03x^2+1.125, 0<=x<5 f(x)= -.2(x-5)^2+1.875, 5<=x<6 f(x).1(x-6)^2+1.675, 6<=x<=7 about the x axis a) If the measurements are in inches, find the capacity of the glass in cubic inches B) If 16.3787 cm...
*Monday, September 22, 2014 at 7:21pm*

**calculus**

Q: Suppose that for all xE(0,5), f(x) is between 1+x and 3+sin((pi)(x)). Find lim x->2 f(x). Is this question related to the intermediate value theorem? It is confusing me, can anyone help out? I am not certain of what xE(0,5) is defining, is that a set of x values or am I ...
*Sunday, September 21, 2014 at 12:58am*

**pre calculus**

Use a calculator to find the approximate value of sin-1( 0.635).
*Saturday, September 20, 2014 at 1:45pm*

**Calculus**

To estimate the height of a building, a stone is dropped from the top of the building into a pool of water at ground level. How high is the building if the splash is seen 6.7 seconds after the stone is dropped? Use the position function for free-falling objects given below. (...
*Friday, September 19, 2014 at 8:42pm*

**Pre-Calculus Questions**

Hi! Can someone help me with these? Thanks! 1.) Determine the slope and the y-intercept of the equation of the line passing through the points (-5, 3) and (1, -3). Write the equation of the line in slope intercept form. 2.) Determine the x- and y- intercepts and use them to ...
*Friday, September 19, 2014 at 2:54pm*

**Pre-Calculus**

Hi! I need help with these two. Here's the link for both pictures. 1.) Determine the intervals over which the function is increasing, decreasing, or constant. Write your answer in interval notation. Link for photo: file:///C:/Users/Cynthia/Downloads/Save.PNG 2.) ...
*Friday, September 19, 2014 at 7:26am*

**calculus**

Summarize all the pertinent information obtained by applying the final version of the graphing strategy Curve-sketching techniques to f,and sketch the graph of f. f(x)=(x-1)^3(x+3)
*Friday, September 19, 2014 at 1:12am*

**calculus**

f(x)=8x^3-2x^4 and sketch a graph of f.
*Friday, September 19, 2014 at 1:05am*

**calculus**

How to find the x and y coordination of all inflection points? f(x) = x^4- 12x^2?
*Friday, September 19, 2014 at 1:03am*

**Math (Pre-Calculus)**

Can someone help me with this? Thanks! Find the zeros of the function algebraically. f(x)=x^2-8x+15 ---------------- 10x
*Thursday, September 18, 2014 at 8:50pm*

**Pre-Calculus**

1.) Which equation represents a function? A. y=-2x+1 B. x=y^2-1 C. y^2=1/3x D. None Of These E. x=4 2.) The zeros of a function f are the x-values for which f(x) = 0. True or False?
*Thursday, September 18, 2014 at 8:48pm*

**math calculus 3**

find a formula for a function g( x,y,z) whose level surfaces are planes parallel to z=3x-2y+7
*Thursday, September 18, 2014 at 4:11pm*

**Calculus **

Calculate the average rate of change of the given function f over the intervals [a, a+h] where h=1, 0.1, 0.01, 0.001, and 0.0001. I have no clue how to do this. Any help would be appreciated. Thanks I know I use the formula f=f (a+h) - f (a)/h Then do I need to plug in the -2x...
*Tuesday, September 16, 2014 at 10:04pm*

**Pre-Calculus**

Hi! I'm having trouble with this math question; can someone help? Thanks! :) Given the function f(x)=x^2+9, solve. a.) Find f(-3) b.) Find f(x-2)
*Tuesday, September 16, 2014 at 8:01pm*

**Calculus I**

Suppose we have a metal bar of length L0 metres at temperature T0 in degrees Celsius.When the bar is heated or cooled, the length of the bar changes. The amount that the length changes is proportional to the product of the temperature change and the original length of the bar ...
*Tuesday, September 16, 2014 at 7:52pm*

**Calculus**

I do not understand what this question is asking and how to get the result for it: "Suppose we have a metal bar of length L0 metres at temperature T0 in degrees Celsius.When the bar is heated or cooled, the length of the bar changes. The amount that the length changes is ...
*Tuesday, September 16, 2014 at 12:05pm*

**Pre-Calculus/Trigonometry**

Help please Which of the following is the equation of a line that passes through the points (2,5) and (4,3)? y = -x + 7 y = x + 7 y = 2x + 5 y = -2x + 5
*Tuesday, September 16, 2014 at 10:43am*

**differential calculus**

a SECURITY CAMERA is centered 50 feet above a 100-foot hallway. it is easiest to design the camera with a constant angular rate of rotation, but this results in a variable rate at which the images of the surveillance area are recorded. so, it is desirable to design a system ...
*Tuesday, September 16, 2014 at 9:44am*

**differetial calculus-related rates**

LINEAR VS ANGULAR SPEED A wheel of a radius 30 centimeters revolves at a rate of 10 revolutions per second.A dot is painted at a point P on the rim of the wheel. a)find dx/dt as a function of ϴ. b)use a graphing utility to graph a function in part (a) c)when is the ...
*Tuesday, September 16, 2014 at 9:39am*

**differential calculus**

ANGLE OF ELEVATION A balloon rises at a rate of 4 meters per second from a point on the ground 50 meters from an observer.Find the rate of change of the angle of elevation of the balloon from the observer when the balloon is 50 meters above the ground. please show all ...
*Tuesday, September 16, 2014 at 7:59am*

**differential calculus**

ADIABATIC EXPANSION when a certain polyatomic gas undergoes adiabatic expansion,its pressure p and volume V satisfy the equation pV^1.3 =k,where k is constant.Find the relationship between the related rates dp/dt and dV/dt. this is a problem of related rates please show all ...
*Tuesday, September 16, 2014 at 7:54am*

**Calculus **

find an equation of the tangent line to the graph of the function f through the point (xsub0, ysub0) not on the graph. TO find the point of tangency (x,y) on the graph of f, solve the equation ....
*Tuesday, September 16, 2014 at 12:36am*

**Calculus-Math**

The ordering and transportation cost C for components used in a manufacturing process is approximated by the function below, where C is measured in thousands of dollars and x is the order size in hundreds. C(x) = 12((1/x)+((x)/(x+3))) (a) Verify that C(2) = C(15). C(2) = 54/5 ...
*Monday, September 15, 2014 at 9:49pm*

**pre-calculus**

At a selling price of $ 54 , a lamp company breaks even on total sales of $ 3564 . If the company's overhead is $ 396 , find the marginal production cost per lamp and find the profit on sales of 145 lamps.
*Monday, September 15, 2014 at 9:17pm*

**Pre-Calculus/Trigonometry**

Am I right? Which of the following is the equation of a line that passes through the point (3,2) and is parallel to the y-axis? y = 3 x = 2 y = 2 x = 3 <---
*Monday, September 15, 2014 at 5:05pm*

**Pre-Calculus/Trigonometry**

Help please What is the slope of the line that passes through (1,0) and is parallel to y = 3x + 5?
*Monday, September 15, 2014 at 4:57pm*

**calculus**

Can you help me solve this problem? I really don't know what to do. I solve problems like for example the rate of change of the elevation but I just encountered this kind of problem so I really don't know what to do. Please help me The endpoints of a movable rod of ...
*Monday, September 15, 2014 at 4:14am*

**Pre Calculus **

A motorboat travels 48 miles down a river in the same time it takes to travel 32 miles up the river. If the rate of the current is 4 miles per hour that is the rate of the boat still water?
*Monday, September 15, 2014 at 12:39am*

**AP Calculus**

Find an equation of all tangent lines for the curve x^2-xy+y^2=16 x=-2 2x-(xy'+y(1))+2yy'=0 2x-xy'+y+2yy'=0 y'(-x+2y)=-2x-y y'=-2x-y/-x+2y y'=-2(0)-y/-(0)+2y y'=-y/2y Not sure what to do now?
*Sunday, September 14, 2014 at 10:30pm*

**Pre-Calculus**

Find all the rational zeros of the polynomial, and then find the irrational zeros P(x)= 2x^4+15x^3+31x^2+20x+4
*Sunday, September 14, 2014 at 4:25pm*

**Pre-Calculus**

Find a polynomial with integer coefficients that satisfies the given conditions. P has degree 2 and zeros 2 + i and 2 − i.
*Sunday, September 14, 2014 at 2:35pm*

**Pre-Calculus**

Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x^4 − 3x^3 + 29x^2, D(x) = 3x^2 + 13
*Sunday, September 14, 2014 at 2:24pm*

**Pre-Calculus**

Find all the real zeros of the polynomial. Use the quadratic formula if necessary. 4x^3 − 10x^2 + 9
*Sunday, September 14, 2014 at 2:23pm*

**Pre-Calculus**

Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x4 − 3x3 + 29x2, D(x) = 3x2 + 13
*Sunday, September 14, 2014 at 2:19pm*

**Pre-Calculus**

Find all solutions of the equation and express them in the form a + bi. 36x^2 − 12x + 2 = 0
*Sunday, September 14, 2014 at 1:25pm*

**Pre-Calculus**

I'm kind of stuck on how to do this. Can someone help me? Thanks! Write the equation of the line with slope -2 that passes through the point (-1, -3) in slope-intercept form.
*Sunday, September 14, 2014 at 11:28am*

**math**

The farmer wants to use the 500 m to an enclosure divided into two equal areas, What is the total maximum area that can is achieved with the 500 m fence. using differential calculus to the solution.
*Sunday, September 14, 2014 at 10:03am*

**Pre-Calculus**

Hello! I wanted to know if my answers are right or not? Thanks! :) 1.) Segments AB and CD have the following endpoints. Determine whether the segments are parallel, perpendicular or neither. A (3, 0), B (-2, 2), C (-1, 4), D (-3, -1) My answer: Parallel 2.) Segments AB and CD ...
*Sunday, September 14, 2014 at 8:44am*

**Pre-Calculus**

Find all zeros of the polynomial P(x)=x^3-x-6
*Sunday, September 14, 2014 at 2:55am*

**Pre-Calculus**

Factor the polynomial completely, and find all its zeros. State the multiplicity of each zero P(x)= x^3-x^2+x
*Sunday, September 14, 2014 at 2:54am*

**Pre-Calculus**

Find all solutions of the equation and express them in the form a+bi 2x^2+3=2x
*Sunday, September 14, 2014 at 2:52am*

**Pre-Calculus**

Find all rational zeros of the polynomial, and write the polynomial in factored form? P(x)= 2x^3-3x^2-2x+3
*Sunday, September 14, 2014 at 1:20am*

**Pre-Calculus**

Find a polynomial of degree 4 that has a integer coefficients and zeros 1,-1,2 and 1/2 (one half)?
*Sunday, September 14, 2014 at 1:17am*

**Pre-Calculus**

Hello! I wanted to know if my answers are right or not? Thanks! :) 1.) Segments AB and CD have the following endpoints. Determine whether the segments are parallel, perpendicular or neither. A (3, 0), B (-2, 2), C (-1, 4), D (-3, -1) My answer: Parallel 2.) Segments AB and CD ...
*Saturday, September 13, 2014 at 6:28pm*

**Pre-Calculus**

Hi! I have three questions that I need checked over just to make sure I understand it. Thanks! :) 1.) What is the slope of the line that passes through (5, 8) and (-2, 6)? My answer: -2/7 2.) If Segment AB || Segment CD and the slope of Segment AB = 1/2, what is the slope of ...
*Saturday, September 13, 2014 at 11:55am*

**Pre-Calculus/Trigonmetry**

Write the equation of the line that is parallel to the x-axis and goes through the point (1,4).
*Friday, September 12, 2014 at 6:44pm*

**Pre-Calculus**

Hello! Can someone check and see if these answers are correct? Thanks! 1.) If a line with slope of 1/2 is perpendicular to another line, then the slope of the other line is -2. TRUE or FALSE? (I choose True) 2.) If Segment QR || Segment TU and the slope of Segment TU is -3, ...
*Friday, September 12, 2014 at 4:14pm*

**Pre-Calculus/Trigonometry**

Help please Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of $29. For any minutes over 250, Tracy is charged $0.35 per minute. Which of the following piecewise functions represents charges based on Tracy's cell phone plan? A. f(x)={...
*Friday, September 12, 2014 at 1:14pm*

**Calculus II**

find the distance between the given parallel planes 5x-5y+z=10 and 10x-10y+2z=2. I got 9sqrt51/51
*Thursday, September 11, 2014 at 2:37pm*

**Math: pre calculus**

a barn is 150 feet long and 75 feet wide. the owner has 240 ft of fencing and wants to construct two adjacent outdoor pens of identical size along the long side of the barn using the barn as one side of each pen. the owner wants the pens as large as possible. what are the ...
*Thursday, September 11, 2014 at 1:53am*

**pre calculus **

Determine the quadratic function in vertex form (A) vertex at (-3,-10) passing through the point (2,-5) Dow do I figure it out?
*Wednesday, September 10, 2014 at 9:58pm*

**maths-calculus**

find the limit as x approaches infinity, -(x+1) (e^(1/(x+1))-1)
*Wednesday, September 10, 2014 at 6:10am*

**Pre-Calculus**

Hi! I need help with this math homework question: If you had a triangle that has the vertices (-2, 1), (0, -5), and (1. 2) and you had to shift that triangle 5 units left and 4 units down, how would you find the vertices of the shifted triangle?
*Tuesday, September 9, 2014 at 2:20pm*

**Pre-Calculus/Trigonometry**

Help Me, Please Here is a table of values for y = f(x). x: 0, 5, 10, 15, 20, 25, 30, 35, 40 f(x): 5, 6, 7,8, 9, 10, 11, 12, 13 Mark the statements that are true. A. f(5) = 6 B. The domain for f(x) is the set {5, 6, 7, 8, 10, 11, 12, 13}. C. The range for f(x) is all real ...
*Tuesday, September 9, 2014 at 1:24pm*

**Pre-Calculus/Trigonometry**

Help please If, f(x)= 3/x+2 -√x-3, complete the following statement. Round your answer to the nearest hundredths place. F(7)= ?
*Tuesday, September 9, 2014 at 11:45am*

**calculus**

Highway engineers often use quadratic functions to model safe stopping distances for cars like 1/2x quantity squared + 11/5x is used to model the safe stopping distance for car traveling at x miles per hour on dry, level pavement. If a driver can see only 200 feet ahead on a ...
*Tuesday, September 9, 2014 at 6:51am*

**Calculus**

Determine the exact values of the six trigonometric functions of the angle.(-5,-2)
*Monday, September 8, 2014 at 11:02pm*

**Calculus**

"Three hundred books sell for $40 each, resulting in a revenue of $12,000. For each $5 increase in price, 25 fewer books are sold. Write revenue R as a function of the number x of $5 increases." How would you get this problem started?
*Monday, September 8, 2014 at 7:44pm*

**Pre-Calculus/Trigonometry**

Help me please, just explain. How would I find f(1)? f(1)= x; -3, -2, -1, 0, 1, 2 f(x); 3.4, 0, -1.2, 0.4, 1.3, 1.7
*Monday, September 8, 2014 at 6:12pm*

**Calculus**

Suppose the area under the curve y=xe^(-mx) from 0 to 1 is 0.4. Find m.
*Monday, September 8, 2014 at 2:04pm*

**calculus **

Verify Clairaut's theorem for u=ln(x^(2)-y^(2)).
*Monday, September 8, 2014 at 10:31am*

**Calculus**

How do I solve for the investment of 20,000 with an interest rate of 7.5 compounded annually for 10 years? This is what I have so far and I don't know if I'm using the right formula. n=10 and I=r=0.075 A=P(1+i)n =20,000(1+0.075)10 This is where I'm stuck
*Monday, September 8, 2014 at 8:20am*

**Calculus**

Use implicit differentiation to find an equation of the tangent line to the graph at the given point. x + y − 1 = ln(x^5 + y^5), (1, 0)
*Sunday, September 7, 2014 at 10:37pm*

**Calculus-Math**

f(x) = (1/2)x ln(x^6) (−1, 0) (a) Find an equation of the tangent line to the graph of f at the given point. y=
*Sunday, September 7, 2014 at 10:10pm*

**Calculus**

Suppose the total area under the curve y=x^2-mx+1 from 0 to 5 is 11.3024. Find m. I know that this means that i need to find the integral of the absolute value of x^2-mx+1 from 0 to 5 and set it equal to 11.3024, but I am not sure where to go from there.
*Sunday, September 7, 2014 at 8:32pm*

**Calculus**

A rectangle has one corner in quadrant I on the graph of y = 9 − x^2,another corner at the origin, and corners on both the positive y-axis and the positive x-axis. As the corner on y = 9 − x2 changes, a variety of rectangles are obtained. Express the area A of the ...
*Sunday, September 7, 2014 at 5:25pm*

**Calculus**

Using the definition of derivative state the function, f(x) and the value of a for lim as h->0 of (square root of (121+h) -11)/h
*Sunday, September 7, 2014 at 2:41pm*

**Calculus**

Two points P and Q are connected by a straight road of length d. At time t = 0, a car starts driving from P to Q at a constant speed c. At t = 0, a bee starts flying from Q toward the car at a constant speed b > c, and takes a zig-zagging path, reversing direction each time...
*Saturday, September 6, 2014 at 1:50pm*

**INTEGRAL CALCULUS PLEASE HELP!!!**

If F(x)dx=1 from 1 to 25, F(x)dx=4 from 1 to 4, and F(x)dx=9 from 17 to 25, then: 1) What does F(x)dx from 9 to 17=? 2) What does (1F(x)-4)dx from 9 to 17x=? I have no idea how to do this problem and have been on it for hours! The problem is not typed incorrectly, this is ...
*Friday, September 5, 2014 at 6:10pm*

**Honors Pre Calculus**

Verify the trigonometric identity:￼ ￼(1+sin x)/ (1-sinx)^2=￼(1+sin x)/[cos x] Hint: [cos x] means the absolute value of cos x
*Wednesday, September 3, 2014 at 8:39pm*

**pre calculus algebra **

one number is three less than six times second number. their sum is 32. find the two numbers
*Wednesday, September 3, 2014 at 8:34pm*

**Honors Pre Calculus**

Verify the trigonometric identity:￼ ￼(1+sin x)/ (1-sinx)=￼(1+sin x)/[cos x] Hint: [cos x] means the absolute value of cos x
*Wednesday, September 3, 2014 at 8:25pm*

**Honors Pre Calculus**

Tony visits the local fair and sees one of the rides, the ferris wheel. The ferris wheel has a diameter of 50 feet and is on a platform of 4 feet. If it takes 12 seconds to make one full revolution, what is the equation of the height of a person on the ferris wheel at any time t?
*Wednesday, September 3, 2014 at 7:11pm*

**calculus**

A man in a rowboat at p, see fig 2c, 5km from the nearest point A on the straight shore. He wished to reach a point B, 6km from A along the shore, in a shortest time. Where should he land if he can row 2km/h and walks 4km/h? P 5 km A C B
*Wednesday, September 3, 2014 at 8:32am*