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Pre-Calc
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Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta
All I need is an example to work off I was
3 answers
asked by
Leah
417 views
Could someone show me how to solve these two problems-I have 10 of each kind to do this weekend and I'm really lost
1. Find
4 answers
asked by
Tammie
604 views
A large painting in the style of Rubens is 3 feet longer than it is wide. If the wooden frame is 18 in wide and the area of the
4 answers
asked by
Wooah
1,380 views
Ok, so the problem was about a person with 300 feet of fence to make a rectangle enclose. The person also wanted to use the
1 answer
asked by
Sakura
411 views
Consider a non-right triangle. a=39 b=25 c = 24.(a,b,c are the sides) Find A,B,C. (these are the degrees of the triangle)
I know
1 answer
asked by
Student (UCI)
434 views
True or False:
•Every equation of the form X^2+y^2+ax+by+c=c •The radius of the circle x^2+y^2=9 is 3 •The center of the
4 answers
asked by
nelly
804 views
Express cos9x+cos5x as a product.
Can you just multiply the 9 and 5 to get: cos45x ? is that a product?
2 answers
asked by
Janique
476 views
Solve the multiple angle equation in the interval (0, 2ð) tan2x=-1
Do i have to divide the 2 to the other side?
3 answers
asked by
Janique
358 views
The vecotr u= <4400, 4500> gives the number of two models of laptops produced by a company. The vector v=<1600, 950> gives the
3 answers
asked by
Lafanda
571 views
if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)
1 answer
asked by
Purplechick4
512 views
find the exact value of sin(-15pi/6) and cot(-7pi/6)
4 answers
asked by
Purplechick4
2,238 views
Write a Sinusoidal function for the following. A ferris wheel is 100 feet in diameter and makes one revolution in 45 seconds. If
1 answer
asked by
Marisa
430 views
A force of 45 pounds is exerted along a rope attached to a crate at an angle of 30 degrees above the horizontal. The crate is
1 answer
asked by
Holly
819 views
Fill in the blank;
•In the process of polynomial division (Divisor)(Quotient)+_______=_______ •When a polynomial function f
4 answers
asked by
nelly
1,782 views
Evaluate the expression without using a calculator(show work please)?
(sin pi/4 cos pi/6 - sin pi/6 cos pi/4) the answer is
1 answer
asked by
John
934 views
Find the values of the trigonometric functions of è from the information given.
(sin è, cos è, csc è, sec è, cot è) tan è
1 answer
asked by
Kelvin
491 views
For the triangle shown, find the length AD. (Assume u = 18, v = 18, x = 10°, and y = 10°. Round your answer to two decimal
2 answers
asked by
Mike
1,243 views
for the conic y=5x^2-40x+78 find an equation in standard form and its vertex, focus, and directrix
5 answers
asked by
Zoey
613 views
How would you prove this identity?
(sin^3(x)+cos^3(x))÷(1-2cos^2(x)) = (sec(x)-sin(x))÷(tan(x)-1)
1 answer
asked by
Anna
395 views
Hello! I'm stuck on how to do this problem and would appreciate some help!
Choose a non-zero complex number c for f(z) = z2+ c.
2 answers
asked by
l
584 views
How do I calculate the coordinates for the Polar equation r=4cos3theta ?
1 answer
asked by
Anonymous
415 views
f(x)=(24x3+68x2+24x−32)/(4x3+56x2+236x+280)
I need help finding the roots and the hole for this problem.
3 answers
asked by
Richard
345 views
1. Determine the quadrant in which the terminal side of the angle is found and find the corresponding reference angle.
theta = 4
1 answer
asked by
Anonymous
749 views
cosx/(1+secx)
Please help me simplify this expression.
3 answers
asked by
Gaby
333 views
I have to solve these using matrices by hand. Can someone please help me?
2x-3y-2z=4 (1/4)x-(2/5)y+(3/4)z=(-1/3) -2x+1.3y-3z=5
4 answers
asked by
Tori
455 views
The cable in the center portion of a bridge is supported by five pillars to form a parabola. The center support is 10 ft high,
4 answers
asked by
Tori
1,106 views
A box is formed by cutting squares out of the corners of a flat piece of metal, and folding the sides up. What size cuts should
1 answer
asked by
YKWCH
396 views
Two lookout towers on Mount Abraham and Snow Mountain are 29 miles apart. A fire warden in each tower sees a forest fire. From
2 answers
asked by
Allan
551 views
Convert r=1+3sin2x from a polar equation to a rectangular equation.
6 answers
asked by
Zac
671 views
Given the one point function (3,9) (in other words f(3)=9) Identify the following transformations
f(2x) -3(f(x-4))+1 f(5x+3)
1 answer
asked by
Zac
408 views
A man stands on the roof of a building so that his eyes are 132m above ground level. A trash can is on the ground 67.5m away
2 answers
asked by
Julie
1,094 views
Suppose that f has a domain of A and g has a domain of B.
(a). What is the domain of f + g? (b). What is the domain of fg? (c).
4 answers
asked by
Stockton
1,415 views
How do I determine if there are common factors for x^5+3x^3+5x/4X^4+2x^2, when the leading coefficient of the denominator is
1 answer
asked by
Mary
357 views
Determine the one sided limit of f(x) s x approaches -2 from the right side.
F(X) = (x^2-2x+4)/(x^3+8). I do not know where to
3 answers
asked by
Samantha
448 views
I really need to understand wha tmakes a graph have these discontinuities
1)Removable 2)Non-Removable and how to tell them in a
1 answer
asked by
Carmen
394 views
A wrecking ball attached to a crane swings back and forth. The distance that the ball moves to the left and right of its resting
2 answers
asked by
lisa
865 views
Please help me solve these two equations!!
Divide and express as a polynomial: 12a^8b^5 - 9a^14b^15 + 6a^6b^10
3 answers
asked by
Maggie
409 views
Using the difference for formula, find the tan 255.
Step by step would be appreciated
2 answers
asked by
Dan
557 views
Prove: 2 - sec^x / 1+ tan ^x = cos 2x
1 answer
asked by
Jack
351 views
Consider the following table, which gives the winning Olympic pole vaults in the 20th century.
Year Gold Medalists Height(ft)
2 answers
asked by
Andy G
501 views
One campus of HCC has plans to construct rectangular parking lot on land bordered on one side by a highway. There are 640 ft of
2 answers
asked by
Andy G
641 views
ball thrown vertically upward with an initial velocity of 80 ft per second. The distance s(in ft) of the ball from the ground
3 answers
asked by
Andy G
1,910 views
Simplify the difference quotient
[f(2 + h) − f(2)]/h ; if h ≠ 0. f(x) = x2 − 3x I keep getting the answer wrong. I must be
4 answers
asked by
Kerri
2,542 views
A wire 100 centimeters in length is cut into two separate pieces (not necessarily equal). ON epiece is bent to form a square and
2 answers
asked by
Andy G
1,024 views
The attendance A (in millions) at NCAA womens college basketball games for the years 1994 through 2000 is shown in the table,
1 answer
asked by
Andy G
637 views
A company that produces portable cassette players estimates that the profit P (in dollars) for selling a particular model is
2 answers
asked by
Andy G
851 views
The concentration C of a chemical in the bloodstream t hours after injection into muscle tissue is C=(3t+t)/(t^3+50)
a. determine
4 answers
asked by
Andy G
3,668 views
a driver averaged 50 miles per hour on the round trip between akron, oh and Columbus, oh, 100 miles away. The average speeds for
1 answer
asked by
Andy G
614 views
How do I solve this equation?
4^x * (1/2)^3-2x = 8*(2^x)^2
1 answer
asked by
Kay.
334 views
A farmer is making a pig pen next to the barn. He has enough materials to build 50 feet of fencing.
a)what is the largest area he
4 answers
asked by
John
583 views
Eliminate the parameter x = t^2 - 1 and
y = t^2 + t
4 answers
asked by
Jackie
2,583 views
Solve for x:
log base27 (2x-1) = 4/3
1 answer
asked by
Aly
344 views
Eliminate the parameter x = abs(t-3) and y = t + 3...how do you undo the absolute value in order to get y=?
1 answer
asked by
Megan
419 views
why is the line <x,y,z>=<8,9,10>+t<3,4,5> perpendicular to the plane 3x=4y+5z=10
3 answers
asked by
Danielle
343 views
How would you go about finding all the solutions of the equation. I just don't know where to start.
2cos2theta-root3=0
1 answer
asked by
Anonymous
390 views
Word of mouth advertising can be an effective form of marketing , or it can be very harmful. Consider a new restaurant that
2 answers
asked by
alexis
827 views
2. The polar coordinates of a point are given. Find the rectangular coordinates of each point.
a. (5,(π / 4)) b. (-2,(π / 6))
2 answers
asked by
Katie
1,142 views
The peak of a mountain is observed from the base and from the top of a tower 180 ft high. Find the height of the mountain above
2 answers
asked by
Chris
1,063 views
Find the zeros of the function algebraically. Show all work.
f(x)=x^2-8x+15 ---------------- 10x
1 answer
asked by
Lori
361 views
Find the zeros of the function algebraically. Show all work.
f(x)=x^2-8x+15 ---------------- 10x
1 answer
asked by
Dada
449 views
A quadratic function has its vertex at the point (-5,-2). The function passes through the point (-8,-10). Find the quadratic and
3 answers
asked by
Caleb
1,631 views
1.) If you use the parent graph y=sqaureroot of x as a reference, how would you graph y=sqaureroot of x+2+5?
a.) Move the parent
3 answers
asked by
Andrew
661 views
If you use the parent graph f(x)=x^2, how would you graph g(x)=(x-4)^2-2?
1 answer
asked by
Taylor
294 views
Describe the difference between transformations and nonrigid transformations.
1 answer
asked by
Lori
442 views
1.) Find (f + g)(x) when f(x) = x + 2 and g(x) = x - 2.
2.) Find (f - g)(x) if f(x) = 2x - 5 and g(x) = 4. 3.) Given f(x) = 4 and
2 answers
asked by
Steffy
476 views
1.) If f(x) = 3x + 5 and g(x) = 5 - x, then g(f(x)) = 10 + 3x. True or False?
My answer: True 2.) If f(x)=x+2 and g(x)=4-x^2,
1 answer
asked by
Tina
341 views
Solve the system of equations using either the substitution method or the multiplication/addition method
answer: 3x+2y=14 2x-4y=4
5 answers
asked by
Anonymous
1,965 views
Help please
Find f(2) and f(a+h) when f(x)=3x^2+2x+4
4 answers
asked by
Anonymous
385 views
Please help stuck on this one question
Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9
1 answer
asked by
Anonymous
336 views
help please
For f(x)=3x+1 and g(x)=x^2-6 find (f-g)(x) A. x^2-3x-7 B. 7+3x-x^2 C. 3x^2-17 D. -x^2+3x-5
1 answer
asked by
Anonymous
311 views
Can someone check this? Thanks! :)
Which pair(s) of functions are inverses? There may be more than one correct answer. a.) f(x) =
1 answer
asked by
Sofia
364 views
Which pair(s) of functions are inverses? There may be more than one correct answer.
a.) f(x) = x - 12, g(x) = x + 12 b.) f(x) =
1 answer
asked by
Iggy
429 views
Convert Q = 2e^8t to form Q = ab^t
Round all calculated values to three decimal places Q= my answer I got 2(2.980.9579)^t I don't
2 answers
asked by
Tobi
782 views
The number of pounds of apples a cannery can produce and the processing cost are P(h) = 375h and C(n) = 0.35n + 1000 where P(h)
2 answers
asked by
Tori
571 views
Find (f/g)(x) for f(x)=1/x and g(x)=x^3. Show all work and state the domain of (f/g)(x).
1 answer
asked by
Pat
361 views
An ant starts at the point (3,0) on a circle of radius 3 meters and walks counterclockwise a distance of 6 meters around the
3 answers
asked by
Sarah
1,310 views
A radioactive isotope has a half life of 8.1 days. If the sample starts with 25 grams, how much will there be after 90 days?
3 answers
asked by
Jennifer
458 views
At a swim meet, a parent is videotaping his son from a seat in the stands that is 20 meters past the starting line and 8 meters
3 answers
asked by
Connor
801 views
Log(x-6) +Log(x+3)=1
1 answer
asked by
Anonymous
339 views
Radical ((1-sinx)/(1+sinx))= (1-sinx)/cosx (absolute)
Simplify
3 answers
asked by
Anonymous
396 views
A ferris wheel is 63 feet tall when it reaches its highest point at 8 seconds. At the bottom of the ride, you are 3 feet off the
7 answers
asked by
John
640 views
Through how many radians does a circle of radius 1 foot rotate if it rolls 10 feet down the road?
1 answer
asked by
Steven
350 views
The average age of the groom at a first marriage for a given age of the bride can be approximated by the model
2 answers
asked by
Eli
882 views
A page that is x inches wide and y inches high contains 30 square inches of print. The margins at the top and bottom are 2
3 answers
asked by
Anonymous
1,296 views
A piece of wire 100 cm long is cut into two pieces. One piece is bent to form a square and the other to form a circle. Let x
3 answers
asked by
Nadia
3,678 views
A company produces portable cassette players estimates that the profit P (in dollars) for selling a particular model is
2 answers
asked by
Sam
940 views
The concentration C of a chemical in the bloodstream t hours after injection into muscle tissue is C=3t^2+t/ t^3+50
A. Determine
3 answers
asked by
Sam
1,053 views
Find all solutions of the equation in the interval [0, 2pi). Show all work.
sin(x+(pi/6))-sin(x-((pi/6))=1/2
2 answers
asked by
Louis
649 views
This is the last question on my pre-calc homework, I looked through the textbook and have no idea how to do this.
Use the Law of
2 answers
asked by
Cat Jones
582 views
What are the asymptotes of the hyperbola (x+1)^2/4 - (y-2)^2/1 =1
I'm homeschooled, so the concept is hard to grasp. Show steps
3 answers
asked by
Julissa
510 views
I do not know which value I am solving for or how to get there these are the instructions and info given.
Use the given
2 answers
asked by
Seffi
529 views
1)
Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos 12° cos 18°
4 answers
asked by
Alyssa
4,446 views
I am really struggling with how to do these problems, I posted them a few minutes ago but the answers/work shown was incorrect.
1
3 answers
asked by
Alyssa
4,352 views
Is 300 an angle between 0 and 360 degrees that is coterminal with -780 degrees?
3 answers
asked by
Anonymous
1,204 views
Find the degree measures of the radians given.
1. pi/15 rad = 12 degs 2. -9pi/2 = -810 degs 3. 5pi/3 = 300 degs 4. -3pi/4 = -135
2 answers
asked by
Anonymous
592 views
Use the value of this trigonometric function to evaluate the indicated function.
1. cos(t) = 3/4 cos(-t) = ? Ans: 3/4 2. sin(-t)
2 answers
asked by
Anonymous
533 views
The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction
2 answers
asked by
Anonymous
947 views
Evaluate the two trigonometric functions using its period as an aid.
1. cos (9pi/2) = ? Ans: 0 2. cos (-9pi/2) = ? Ans: 0
3 answers
asked by
Anonymous
554 views
Find the point (x, y) on the unit circle that corresponds to the real number 5pi/6. Use it to evaluate cos n.
Is cos n =
2 answers
asked by
Anonymous
1,019 views
An airplane is flying at a speed of 250 mph at an altitude of 4 miles. The plane passes directly above a radar station at time t
3 answers
asked by
Sam
767 views
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