Saturday

December 10, 2016
**Pre-Calc/Trig**

y=-x^2+5x+36 converting into intercept form is this the correct answer? y=(x+9)(x-4)

*Monday, October 27, 2014 by Anonymous*

**Pre-Calc/Trig**

How?? I only know how to convert standard form functions into intercept form, but I do not understand how to do this. Convert the functions into standard form. 1.y=2(x-4)(x+3) 2.y-2=-3(x+4)^2

*Monday, October 27, 2014 by Anonymous*

**Pre-Calc/Trig**

I have looked this up, but still cant figure out what it is.. What is the projectile motion function?

*Monday, October 27, 2014 by Anonymous*

**Calculus/pre-trig**

Write the formula for the discriminant. State the types of roots for a quadratic equation, explaining how the discriminant helps you determine the type.

*Saturday, October 25, 2014 by Anonymous*

**trig**

simplify tan(-17 degree)+sin(24 degree)+cot(73 degrees)+cos(66 degrees in(-24 degree)

*Saturday, October 25, 2014 by Reda *

**Pre-Calc/Trig**

How would I solve this one? I just can't get this one. 6x^2+11x-35=0

*Saturday, October 25, 2014 by BelovedAngel*

**Pre-Calc/Trig**

Have i solved this correctly? x^2+3x-28=0 (x+7)(x-4)=0 x=-7 or 4

*Saturday, October 25, 2014 by BelovedAngel*

**Pre-Calc/Trig**

How would I solve this? x^2+10x+24=0

*Saturday, October 25, 2014 by BelovedAngel*

**Math, Trig/Pre Calc**

You have been asked to build a ramp for Dan’s Daredevil Motorcycle Jump. The dimensions you are given are indicated below. Find the height and incline in feet. Round to the nearest foot One side is 200 ft.The angle between the hypotenuse and the side of 200 ft is 13 ...

*Friday, October 24, 2014 by Sarah Blanchard*

**Pre-Calc/Trig...**

Help me please Standard form: y=x^2-2x-3 Vertex form: ??? Intercept form: ???

*Friday, October 24, 2014 by Anonymous*

**Math Trig**

I'll do my best to describe this problem. Given A=17 degrees, B=73 degrees , x=q, y=5 and z=r use the figure to find the exact value of q and r x = base y = leg z = hypotenuse a = angle between z and x b = angle between z and y 90 degree angle = between x and y Solve for q...

*Friday, October 24, 2014 by Stanley*

**Trig calc**

Find the coordinates of the point at -45 degrees on a circle of radius 3.6 centered at the origin. Round your answers to three decimal places.

*Friday, October 24, 2014 by Perry*

**Trig**

Find the coordinates of the point at -10 degrees on a circle of radius 2.7 centered at the origin. Round your answers to three decimal places.

*Friday, October 24, 2014 by Collen*

**Math Trig**

A kite flier wondered how high her kite was flying. She used a protractor to measure an angle of 40 degrees from level ground to the kite string. If she used a full 120-yard spool of string, how high, in feet, was the kite? (Disregard the string sag and the height of the ...

*Friday, October 24, 2014 by Randy*

**Trig calc**

A) P is approximately (0.883, 0.469), is a point on the unit circle with angle 28 degrees estimate the following. Sin 152 degrees = Cos 152 degrees =

*Thursday, October 23, 2014 by Randy*

**Trig / Calc**

What angle (in degrees) corresponds to 18.96 rotations around the unit circle? Enter the exact decimal answer.

*Thursday, October 23, 2014 by Randy*

**Trig/Pre-Calc...**

Please help me with this. The finishing time for a runner completing the 200-meter dash is affected by the tail-wind speed, s. The change, t, in a runner's performance is modeled by the function shown below: t= 0.0119s^2 - 0.308s - 0.0003 Predict the change in a runner'...

*Thursday, October 23, 2014 by AbelovedAngel*

**Trig**

Verify and identify, I am so confused on how to do this? this is an extra credit but I am lost, please help. cot(Ý-ƒÎ/2)=-tan Ý

*Wednesday, October 22, 2014 by Maxine*

**Pre-Calculous (Trig)**

The Singapore Flyer, currently the world's largest Ferris wheel, completes one rotation every 37 minutes.1 Measuring 150 m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When viewed from Marina ...

*Friday, October 17, 2014 by Randy*

**Pre-Calc/Trig...**

Helpp needed, this is sort of confusing me. Describe the nature of the roots for this equation. 2x^2-x+1=0 A. Two real, rational roots B. Two real, irrational roots C. One real, double root D. Two complex roots

*Friday, October 17, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Simplify 1. √-36 2. -√-625

*Friday, October 17, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.

*Thursday, October 16, 2014 by Anonymous*

**Pre-Calc/Trig...**

A ball is thrown upward with an initial velocity of 4ft/sec from a height of ten feet. what is the maximum height that the ball will reach. h(t)= -16+vt+s

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Solve using any method. 1. 2x^2+5x-3=0 2. -x^2+x+1=0

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Use the discriminant to determine the nature of the roots. 1. 2x^2+5x-3=0 2. -x^2+x+1=0

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am I right? Consider the function y=x^2+5x-2. What would happen to the graph if (x - 3) was substituted in place of the x? A. The graph would shift up 3 units. B. The graph would shift down 3 units. C. The graph would shift 3 units to the right. <--- D. The graph would ...

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Which of the following accurately depicts the transformation of y=x^2 to the function shown below? y=5(x-2)^2+1 A. Shift 5 units right, stretch vertically by a factor of 2, then shift up 1 unit. B. Shift up 1 unit, stretch horizontally by a factor of 5, then ...

*Wednesday, October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? A vertical shift is an example of a non-rigid transformation. True

*Tuesday, October 14, 2014 by Anonymous*

**Pre-Calc/Trig...**

am i correct? What is the axis of symmetry for the graph of y=2x^2-4x+2? x=? the line goes through 1? x=1

*Tuesday, October 14, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? The graph of y=3x^2-4x+2 opens downwards. FALSE The graph of y=2x^2-4x+2 has a y-intercept of (0,1). FALSE

*Tuesday, October 14, 2014 by Anonymous*

**Pre-Calc/Trig...**

Stuck on these two questions, help me please. The graph of y=3x^2-4x+2 opens downwards. True or False? The graph of y=2x^2-4x+2 has a y-intercept of (0,1). True or False?

*Monday, October 13, 2014 by Anonymous*

**trig**

from a top of a hill

*Sunday, October 12, 2014 by alexander*

**Pre-Calc/Trig...**

Which of the following quadratic functions has a graph that opens downwards? check all that apply A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2

*Thursday, October 9, 2014 by Anonymous*

**Pre-calc/Trig...**

which of the following are quadratic functions? check all that apply 1. y=2x^2-3x+7 2. y=3x-4 3. y=(5x-3x^2)/4+1 4. y=x-x^3

*Wednesday, October 8, 2014 by Anonymous*

**Pre-Calc/Trig..**

Write a function for the graph described as a transformation of y=x^2 y=x^2 experiences a vertical stretch of factor 2 and then a shift right of 3 units.

*Tuesday, October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2

*Tuesday, October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=x^2+7

*Tuesday, October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

vertex form:y-4=-(x-4)^2

*Monday, October 6, 2014 by Anonymous*

**Pre-Calc/Trig...**

standard form: y=x^2-4x-5 vertex form: ? intercept form: ?

*Monday, October 6, 2014 by Anonymous*

**trig**

The centers of two belt pulleys, with radii of 3 cm and 6 cm, respectively, are 13 cm apart. Find the total area K enclosed by the belt.

*Monday, October 6, 2014 by Gary*

**Pre-Calc/Trig...**

if h(x)=(fog)(x) and h(x)=3√x+3 find g(x) if f(x)= 3√x+2

*Saturday, October 4, 2014 by Anonymous*

**Pre-Calc/Trig...**

Assume f(x) = -2x + 8 and g(x) = 3x. What is the value of (f + g)(-1)?

*Friday, October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? It is possible for a system of linear equations to have no solutions. True <-- False i think it's true, if the lines are parallel?

*Friday, October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29

*Friday, October 3, 2014 by Anonymous*

**trig**

what is the angle of elevation of a 15 foot ladder leaning 12 feet up a building?

*Friday, October 3, 2014 by tay*

**Pre-Calc/Trig...**

Let y = 4t + 2 be a linear function representing the distance from home for an ant t minutes after starting out from a location near its home. What does the number 4 represent in this function? The ant is 4 feet from its home after t minutes. The ant started out 4 feet from ...

*Friday, October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

If f(x)=1/(x+2), what is f(3+h)? A. 1/(3+h) B. 1/(h+5) C. 1/(x+2)(3+h) D. (3+h)(x+2)

*Friday, October 3, 2014 by Anonymous*

**algebra2/ trig**

The figure at the right shows three circular pipes all with 12inch diameters the have been strapped together by a metal band.What is the lenght of the band? I don't even know where to start , please help?

*Wednesday, October 1, 2014 by Amber*

**Trig**

Two planes take off at the same time from an airport. The first plane is flying at 240 miles per hour on a bearing of S 45.0° E. The second plane is flying in the direction S 45.0°W at 290 miles per hour. What is the bearing of the second plane from the first after 5 ...

*Wednesday, October 1, 2014 by Lindy*

**Pre-Calculus/Trig...**

Help Please For the function defined by: f(x)= (x^2,x≤1) (2x+1,x>1) Define f(0). and also how would i graph f(x)?

*Wednesday, October 1, 2014 by Anonymous*

**Math Pre-Calc/Trig**

If 11 square meters of tile are available to make a rectangle whose width must be 6 meters less than its length, what would be the dimensions of the rectangle?

*Tuesday, September 30, 2014 by Jen*

**math- pre calc/trig**

Find the length of each side of a square if the diagonal is 7(square root 2)? How do I solve or set up this problem?

*Tuesday, September 30, 2014 by jen*

**Math (Trig)**

Rewrite the following expression in terms of tan3x: (sin2x + sin4x)/(cos2x + cos4x)

*Monday, September 29, 2014 by Josh*

**Pre-Calc/Trig**

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5

*Sunday, September 28, 2014 by Anonymous*

**Pre-Calc/Trig**

Help Please Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9

*Sunday, September 28, 2014 by Anonymous*

**Trig**

A railroad tunnel is shaped like a semiellipse as shown below. A semiellipse is shown on the coordinate plane with vertices on the x axis and one point of intersection with the positive y axis. The height of the tunnel at the center is 27 ft and the vertical clearance must be ...

*Saturday, September 27, 2014 by Lisa*

**trig**

karen, (who is 1,6m tall) wishes to calculate the height of a tall tree. she stands 50m from the base of the tree and measures its angle of elevation to be 36 degrees. determine the height of the tree?

*Wednesday, September 24, 2014 by lisa*

**Math Precal/Trig**

Solve for n. 7((1-(-3)^n)/(1-(-3))=3829 I was confused on distributing the number 7, because we've always had problems with the number 1 on the outside.

*Thursday, September 18, 2014 by Samee*

**trig**

if 15 sin theta=8 cos theta , then what is sin theta-cos theta/sin theta +cos theta

*Thursday, September 18, 2014 by krish*

**trig**

A bird at the top of a tree looks down on a field mouse at an angle of depression of 65°. If the field mouse is 30 meters from the base of the tree, find the vertical distance from the ground to the bird’s eyes. Round the answer to the nearest tenth.

*Thursday, September 18, 2014 by Anonymous*

**trig**

A planes actual resulting ground speed and direction are 550 mph and N26E. A wind is blowing from the northeast. If the pilot is holding a course of N27E how fast is the wind blowing I'm just stumped. It's an extra credit question is basically why I'm stumped.

*Tuesday, September 16, 2014 by John*

**Trig**

A planes actual resulting ground speed and direction are 550 mph and N26E. A wind is blowing from the northeast. If the pilot is holding a course of N27E how fast is the wind blowing?

*Tuesday, September 16, 2014 by John*

**trig**

if acos^3x+3acos.sin^2x=m asin3x+3acos^2x.sin=n proof that-(m+n)^2/3+(m-n)^2/3=2a^2/3

*Sunday, September 14, 2014 by mridul*

**trig**

proof that (m+n)^2/3+(m-n)^2/3=2a^2/3

*Sunday, September 14, 2014 by mridul*

**trig**

I have arrived at .322 as the sine of the angle how do I find the actual angle (in decimal/deg)

*Saturday, September 13, 2014 by jim*

**Trig**

Two people decide to find the height of an obelisk. They position themselves 25 feet apart in line with, and on the same side of, the obelisk. If they find that the angles of elevation from the ground where they are standing to the top of the obelisk are 65 degrees and 44 ...

*Wednesday, September 10, 2014 by Anonymous*

**Trig**

Two people decide to find the height of an obelisk. They position themselves 25 feet apart in line with, and on the same side of, the obelisk. If they find that the angles of elevation from the ground where they are standing to the top of the obelisk are 65 degrees and 44 ...

*Wednesday, September 10, 2014 by Harry*

**trig**

the 40ft. pole is braced by , a wire from its top in a point 60ft. from its base up, snd 18° slope. how long is the wire?

*Wednesday, August 27, 2014 by marrylou*

**trig**

A spring is attached to the ceiling and pulled 17 cm down from equilibrium and released. After 3 seconds the amplitude has decreased to 16 cm. The spring oscillates 13 times each second. Assume that the amplitude is decreasing exponentially. Find an equation for the distance, ...

*Sunday, August 17, 2014 by Tricia*

**trig**

bike tires are 22 inches in diameter and has an angular speed of 5 miles per second, how fast is the bike traveling in mph

*Friday, August 15, 2014 by mark*

**Precalculus/Trig**

I can't seem to prove these trig identities and would really appreciate help: 1. cosx + 1/sin^3x = cscx/1 - cosx I changed the 1: cosx/sin^3x + sin^3x/sin^3x = cscx/1-cosx Simplified: cosx + sin^3x/sin^3x = cscx/1-cosx I don't know where to go from there. 2. (sinx + ...

*Friday, August 15, 2014 by Heather*

**Precalculus/Trig**

Prove the following identity: 1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake somewhere: Converted 1/tanx: 1/sinx/cosx + sinx/cosx = 1/sinxcosx Simplified 1/sinx/cosx: cosx/sinx + sinx/cosx = 1/sinxcosx Found common ...

*Thursday, August 14, 2014 by Heather*

**trig**

the angle of from the top of a 41 fdepression as measured oot tower to a reference point on the ground is 65 degrees. How far away, to the nearest foot, is the reference point from the base of the tower

*Thursday, August 7, 2014 by Anonymous*

**Math - trig**

Determine the general solution of 8 cos^2x - 4cosx - 1 =0 (8cos^2x - 4cosx)/8 =1/8 cos^2x - 4cosx=1/8 cos^2x/cosx =1+4cosx/cosx cosx = 5 x = cos^-1(5) x = error

*Saturday, July 26, 2014 by Bontle*

**trig**

two poles of height 25 cm & 20 cm are are parallel to each other with a distance of 12 cm between them. what is the distance between the top of the two poles?

*Saturday, July 26, 2014 by shrenik*

**trig**

In 60 ft. Run sith a 21 degree slope what is rise(ft)

*Wednesday, July 16, 2014 by kenny*

**trig**

Wires are attached to a pole to make it more secure. The diagram shows one of those wires having a length of 220 feet. The angle of elevation from the ground to the top of the pole is 36. What is the height of the pole? A. 178.0 ft B. 374.3 ft C. 159.8 ft D. 129.3 ft

*Tuesday, July 15, 2014 by kells *

**trig**

evaluate the expression under the given conditions tan 2 theta; cos theta=7/25, theta in quadrant I

*Wednesday, July 9, 2014 by Anonymous*

**Trig laws**

Given the area ABC=7.52m©÷. Find a, when m¡ÐB=40¡Æ and c=6m.

*Sunday, June 22, 2014 by Anonymous*

**Trig laws help**

mÚA=15.52, c=18ft, b=16ft, then a=? ft

*Sunday, June 22, 2014 by Anonymous*

**trig**

if (-12,5) is a pointon the terminal side of an angel 0 find the exact value of six trig funcation of 0

*Thursday, June 19, 2014 by sal*

**Math: Trig**

What is Arcsec(-2) equal to and how can you find the correct answer? I got 2pi/3 but it was marked wrong on my test and I'm not sure why it's wrong. Can you please explain this to me? Thanks!

*Monday, June 16, 2014 by Cici*

**trig**

how do you find algebraically the measure of the obtuse angle, to the nearest degree, that satisfies the equation 3 sec theta = 5 is it sec theta = 5/3 and then cos -1 (5/8) = 0.4

*Wednesday, June 11, 2014 by Anonymous*

**trig**

Hi there! I NEED SERIOUS HELP, PLEASE!!! i have such a hard time with verifying identities! The question is: [(sin(theta/2)) / csc(theta/2)] + [(cos (theta/2) / sec(theta/2)] = 1 I have a few ideas on how to solve this, but am mainly not sure how to get rid of (theta/2). I am ...

*Wednesday, June 11, 2014 by stephani*

**trig**

A weight attached to a long spring is bouncing up and down. As it bounces, its distance from the floor varies periodically with time. You start a stopwatch. When the stopwatch reads 0.3 seconds, the weight reaches its first high point 65 cm above the ground. The next low point...

*Monday, June 9, 2014 by Sarah*

**trig**

Establish the following identity: CosA/1-TanA + SinA/1-CotA = CosA-SinA

*Friday, June 6, 2014 by uche*

**trig**

Given that cos A = 5/13 and A and B are both acute angles, calculate the value of Sin2A and Cos2A

*Friday, June 6, 2014 by uche*

**trig**

A car drives 1000 feet on a road that is 8 degrees to the horizontal, as shown in the figure. The car weighs 3400 lb. Thus gravity acts straight down on the car with a constant force F=-3400j. Find the work done by the car in overcoming gravity?

*Friday, June 6, 2014 by Jonny*

**trig**

in triangle ABC, a = 2, b = the square root of 3, and m,angle C = 30 degrees. What is the value of c? a= 1 b= 2 c= 2square root of 3 d=square root of 3 over 3

*Thursday, June 5, 2014 by jonni*

**Trig**

Find the coterminal angles: one positive one negative angle. 55° and (9(3.14)/5) answer degrees in radians and radians in degrees

*Wednesday, June 4, 2014 by Anonymous*

**trig angle of elevation**

The eyes of a basket ball player are 6 feet above the floor. He is at the free-throw line, which is 15 feet from the center of the basket rim. The center of the rim is 10 feet above the floor Before shooting the player decides to step back a few steps. His angle of elevation ...

*Wednesday, June 4, 2014 by Anonymous*

**Trig**

The problem is: an airplane is flying in the direction 120 degrees with an airspeed of 320 mph, and a 35 mph wind is blowing in the direction 60 degrees. The question ask to find the true course and the ground speed. To solve the problem I have done this: Flying 120sin 320_+...

*Monday, June 2, 2014 by Morgan*

**trig**

To guard against a fall, a ladder should make an angle of 75o or less with the ground. What is the maximum height that a 20-foot ladder can reach safely to the nearest tenth of a foot? in my diagram I set it up using the sin function since I want to find the height so I did (...

*Monday, June 2, 2014 by Anonymous*

**trig**

Draw the graph of f(x) = tan x and g(x) = 2cos x for 180 _< thetha _< 180 {since its a graph I'm sure how to draw it here}

*Monday, June 2, 2014 by Anonymous*

**check my set up please, trig**

Sarah holds the end of her kite string 5 feet off the ground. The kite string makes a 43 degree angle of elevation with the horizontal and the kite is 105 ft. off the ground. How long is the kite string to the nearest tenth of a foot? cos43=100/x ?

*Monday, June 2, 2014 by Anonymous*

**help please trig**

According to the Americans With Disabilities Act, a ramp can rise no more than 1 ft for every 12 ft of horizontal distance. To the nearest tenth degree what is the maximum angle that the ramp can form with the ground?

*Friday, May 30, 2014 by HELP!!!!*

**trig! check my answe please**

An advertising blimp hovers over a stadium at an altitude of 125 m. The pilot sights a tennis court at an 8o angle of depression. To the nearest meter, find the ground distance in a straight line between the stadium and the tennis court. I set it up 125/tan8, knowing its a ...

*Friday, May 30, 2014 by Anonymous*

**Trig**

I was wondering, is a sinusoidal function an algebraic model? Or, on the other hand, is there a way to derive an algebraic model from a sinusoidal function?

*Thursday, May 29, 2014 by Lima Bean*

**Trig**

Hi, I would like to ask anyone available a quick question. How would I explain WHY it is that the data/function of average monthly temperatures for a location are a sinusoidal function? I am having trouble phrasing and explaining it, although I am aware that it is in fact ...

*Thursday, May 29, 2014 by Lima Bean*