# Pre- Calculus

21,228 results, page 6

### pre-calculus

Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (cos 5x)^2

### Pre-calculus

Find the minimum value of f(x, y) = y – x + 1 for the polygonal convex set determined by this system of inequalities. x > 0 y > 0 2x + y< 4 the answer is -1. please tell me why

### Pre calculus

How do you work this problem? Find the exact value of sin 2u, cos 2u, and tan 2u given that cot u=3 and 180<u<270

### Pre-Calculus

Find the maximum and minimum values of the function for the polygonal convex set determined by the given system of inequalities. x + y > 2 8x – 2y < 16 4y < 6x + 8 f(x, y) = 4x + 7y

### Pre Calculus

(a) Determine the number of terms, n, if 3+3^2+3^3+..........+3^n= 9840. (b) Three numbers, a, b and c form a geometric series so that a+b+c = 35 and abc = 1000. What are the values of a, b and c ?

### Pre Calculus

If you are riding on a Ferris wheel that is 60 feet tall and it takes 5 minutes to make a one revolution, what is your linear velocity?

### Pre-Calculus

How is -16/(4x+6)^5 and -1/(2(2x+3)^5) equivalent? I think -1/2(2x+3)^5 is the more simplified version of the two, but I just can't figure out how -16/(4x+6)^5 simplifies to -1/(2(2x+3)^5). please explain

### Pre Calculus

Using Descartes' Rule of Signs how can you determine the number of positive and negative zeros (roots) a polynomial may have?

### Pre Calculus

Can someone help me with this problem? Determine the number of positive integers less than 10,000 that can be formed from the digits 1, 2, 3, and 4 if repetitions are allowed. Thank you!

### Pre-Calculus

Determine a quadratic function with this set of characteristics. x-intercepts of 2 and 7 and maximum value of 25 ( How would I find the x-coordinate for the vertex?) (Thank you!)

### Pre calculus

olve the system of equations using matrices. Use Gaussian elimination with back-substitution. x + y + z = -5 x - y + 3z = -1 4x + y + z = -2 I need it explained to me, how do I do this?

### pre calculus

can you check my work Find two different sets of parametric equations for the given rectangular equation: y=x^2+10 answer: x=t y=t^2+10 x=t^3 y=t^6+10

### Pre-Calculus

explain how to do these with please. I was out a couple of days so give clear instructions. sin(π/2-ϴ)secϴ cot(π/2-x)cosϴ

### Pre calculus

explain how to do these with please. I was out a couple of days so give clear instructions. 1. sin(π/2-ϴ)secϴ 2. cot(π/2-ϴ)cosϴ

### College Pre-calculus

The qustion asks find all solutiions in the interval [0,2pie), correct to five decomal places. 5 cos 2x= 2

### Pre-Calculus

x^4-16x^3+90x^2-111x+173 When I put this equation into the graphing calculator, I get a parabola. I'm not sure how to find the zeros. Can you help?

### Pre-calculus

Use a graphing utility to approximate any relative minimum or maximum values of the function g(x)=x sqrt4-x Not getting this one, either. Thanks.

### pre calculus

A sum of $5000 is be invested in a bank. if the annual interest is 10% and compounded monthly, how long will it take for the original investment to double.

### Pre-Calculus

Describe the function resulting from reflecting f(x)=x^3+2x^2-x+5 about the y-axis and then shifting to the left by 4. Is this the same as performing the operations in the reverse order

### Pre - CALCULUS

Find the x-intercepts (if any) for the graph of the quadratic function. 6x2 +12x+5=0 Give your answers in exact form. Show your work.

### pre - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20

### pre - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20

### pre - CALCULUS

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20

### pre-calculus

Can someone help me with this question please? A linear function may have zero, one, or infinitely many zeros. Illustarte all three of these situations. Thank you!

### Pre Calculus

Applications of trigonometric functions Solve the missing parts of the triangle satisfying a=125 b=150 alpha=55 degrees There are two solutions

### calculus (pre)

a riding lawn mower has wheels with a diameter of 1.4 ft and is driving at 4 mph. find the angular velocity of the tires in radians per minute

### Pre-Calculus

A surveyor measures the distance between buildings X and Y as 200 feet. The angle of elevation from the base of X to the top of Y is 25 degrees. What is the height of building Y?

### 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 ...

### 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

### Pre-Calculus

Write a linear equation to fit the description. The line with a slope of zero containing the y-intercept of x/3 + y/9 = 1 I'm not sure what to do here. Can someone please help me?

### Pre-calculus

write the complex number -5 in polar form. I don't get how to do this because arctan of b/a would be 5/0 which is a fraction with no solution. Also, is a zero? Sorry if I'm being confusing! Thank you!

### Pre-Calculus

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x - y + 3z = 12 x + 4y + 6z = -32 5x + 3y + 9z = 20 Please help me..

### Pre calculus

find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one should have the base of "e"

### Pre-Calculus

Can you please give and example of a hyperbola and ellipse with the same vertices and center that I can graph? Then explain the similarities and differences between the graphs.

### Pre-calculus

Find the center radius and equation of a circle in standard form given the following conditions: 1. Tangent to 3x+2y=0 at the point (0,0) and passing through (1,-1) and (6,0)

### Pre-calculus-check answers

If f(x)=4x^2 and g(x)=2/x, find [g x f](x). Answer: -1/2x^2 2) Are f(x)=1/2x+5 and g(x)=2x-5 inverses of each other? Answer: no

### Pre-Calculus

I want to know how we know if a function is continuas or discontinuos and what are the types and diff if discontinuos functions?

### pre-calculus

is the function of f(x)=x^2-4x even, odd, or neither? oh and on what intervals is the function of f(x)=|x+1|+|x-1| increasing?

### Pre-Calculus

How do I solve: sin theta = -1 for all real values of theta?

### pre-calculus

If sin a = 3/5 when Pi/2<a<Pi and cos B = -12/13 when Pi<B<3Pi/2, then what is the value of sin(a+b)? I don't get the question... Help appreciated.

### pre calculus

A parallelogram has a 70 degree angle and sides 6 cm and 10 cm long. How long are its diagonals?

### pre calculus.

x is a first quadrant angle. In what quadrant(s) does the terminal side for 2x lie?

### pre-calculus

solve the following inequality 16(x^2-1) >16x the solution set is? or there is no solution.

### pre-calculus

Convert the following parametic equation into a polar equation: x=t y=(2t-4)/3

### Pre Calculus

Can you give me an example of properties of functions in a real life example?

### Pre-Calculus 11

Simplify the following ∛375/4 This is how far I got ∛5*5*5*3/4

### Pre Calculus

Simplify the expression. 9 log 9 2 This is 9 to the power of log base 9 of 2 a. 2 b. 18 c. 4 d. 9 e. none of these

### pre calculus honors

solve the system if possible | x+y+z = 15 | | < 7x+y+z = 75 | | | 3x+y-z=29 a. x=10,y=2,z=3 b. x=–10,y=–2,z=–3 c. x=3,y=10,z=–3 d. x=12,y=9,z=–3 e. no solution; inconsistent system

### Pre-Calculus

Given Sin(A) = ⅗ and Cos(B) = 8/17 in Quadrant I, find Sin(A+B).

### Pre-Calculus

Given Sin(A) = ⅗ and Cos(B) = 8/17 in Quadrant I, find Cos(A+B).

### Pre calculus

Write a polynomial function given the zeroes: 11i and -11i

### Pre Calculus

Verify the following identity 2 tan x/1+tan^2 x = sin 2x

### Pre Calculus

Establish the following identity tan(x+pi/4)=1+tanx/1-tanx

### Pre-Calculus

3n=squareroot of 10n-1 And Y=squareroot of 7y-10 Help would be greatly appreciated!

### Pre Calculus

Inverse functions what is the inverse function of f(x)=1/square root of x +1? and f(x)=1-x^2, x<0?

### Pre-calculus

how do you graph f(x)={2x+5 if x<0 {5 if 0¡Üx¡Ü10 {2x-10 if x>10 (the {'s is supposed to be one long one)

### Pre-Calculus

solve by fully factoring x^3-7x-6=0 How would I fully factor this?

### Pre-Calculus

Simplify arctan 1/3 + arctan 2/3(round to the nearest degree).

### pre calculus

Find the exact values: tan(7pi/4) - tan (pi/6)

### Pre calculus

Find a unit vector in the direction of the given vector. v=(1,-1)

### Pre-Calculus

if cos theta =7/13, where 0<theta<pi/2, fin the value of cos2theta

### Pre-Calculus

Simplify the trigonometric expression: cos^3x+sin^2x cos x

### Pre-calculus

Can someone please help me with this problem.. I don't get it! Solve (sqrt 5r - 9)-3 = sqrt(r+4)-2

### math: pre-calculus

Solve the equations. Log(6x-1) = Log(x+1) + log4

### Pre-Calculus

Find a polynomial with the zeros -1, 7, sqrt2, and -(sqrt2). Can this be f(x) = x^4 - 6x^3 - 9x^2 + 12x + 14?

### Pre Calculus

Find the value of x. log4 65,536 = x a. x = 32,768 b. x=8 c. x = 65,536 d. x=4

### Pre-Calculus

csc theta = sqr root of 5, what is cot theta?

### Pre-Calculus

Convert to Rectangular: r*tan theta/sec theta=2 A. y=2 B. y=1/2 C. x=2 D. x=1/2

### Pre Calculus

Find the 2 x 2 matrix A such that pmatrix{(-1,-1)(1 -1)} A = I, where I is the 2 x 2 identity matrix.

### Pre calculus

4x^2-25y^2-8x-100y-196=0 how do i find the conic section to find the center?

### Pre-Calculus

I'm having a had time with this problem. Could you please help with step by step resolution? e^-x / e^-1 + 3 dx Thank you..

### Pre-Calculus

Assume sin A = sin B. If A = π/8, find B. Please show work so I'll know what to do.

### Pre-Calculus

Determine the equation of a line that passes through (2,2) and is parallel to the line tangent to y=3x^3-2x at (-1,5)?

### Pre-calculus

Given that alpha=(14pi/3) what is the least positive angle coterminal with alpha?

### Pre-Calculus

Find the rectangular coordinates of the point with the given polar coordinates. (3, 150°)

### Pre-Calculus

Express the number in rectangular form. 3(cosπ/3+isinπ/3)

### Pre-Calculus

Have I converted correctly from standard form to vertex form? y = -3x^2 + 12x+1 = y = -3(x-2)^2 -13 Thanks

### pre-calculus

State the amplitude, period, phase shift, and vertical shift of the function y= -3 (1/2x- 2/3 pi)-4

### Pre-Calculus

If csc theta = square root of 5 divided by 15, find sin theta

### Pre-Calculus

csc theta = (sqr root 5) over 15, find sine theta

### pre calculus

Find all of the solutions of the equation x^4-625i=0 and represent the solutions graphically.

### Pre-Calculus

Convert to rectangular: theta=(2pi)/3 A. y=-sqrt3 B. y=-sqrt3x C. x=sqrt3 D. x=-sqrt3y

### pre calculus

change the equation to rectangular coordinates: r= 2(sin theta -cos theta)

### Pre- calculus

Change the equation to rectangular coordinates: r= 2(sin theta-cos theta)

### pre-calculus

What is the polar form of the equation 3x - 4y = 12? The answer is r = 12/ (3cosx - 4 sinx) (x = theta) I don't know how to get the answer though.

### Pre Calculus

Determine the coordinates of the point (xy) where the curves y=(12)x−5 and y=x2+2x−15 intersect in the third quadrant

### Pre-Calculus

How do I write the quadratic function f(x) = 1/2 (6x^2 - 24x + 22) in standard form, and go about graphing the function?

### pre calculus

Change the exponentioanl expression to an equivalent expression involving a logarithm. e^-1/3 = 9t Somebody help PLease!

### Pre Calculus

(cotx)(cscx)+secx=(csc^2x)(secx) Please help to verify this trigonometric identity.

### pre calculus

for the given function f and g, find the specified value of the function. State the domain: f(x)=2x-5; g(x)=7x-9 a. (f-g)(x)= b.(f/g)(x)= I need help!

### Pre-calculus

Explain how the graph of f(x)=(-2)/(x-3)^2 can be obtained from the graph of y=1/x^2 by means of translations, compressions, expansions, or reflections.

### Pre - calculus

Can someone please explain how to simplify this proiblem: cotx/sec^2 + cotx/csc^2

### Pre-Calculus

Find the polar coordinates of each point with the given rectangular coordinates. Use degrees. (-4,-3)

### Pre-Calculus

Find all rational zeros of the polynomial, and write the polynomial in factored form? P(x)= 2x^3-3x^2-2x+3

### 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?

### Pre Calculus

If a 25 mg sample of radioactive material decays to 18.4 mg in 5 years, how long will it take the sample to decay to 20.5 mg?

### pre-calculus

The terminal ray of an angle passes through the point (5,12). What is the value of cosine for this angle?

### Pre-Calculus

Explain the difference between sin^-1(x) and 1/sin(x), Are there different expressions for both these functions?

### Pre-Calculus

g(x)= x^2+7 Find the inverse of g(x) and state the domain and range for the inverse of g(x) using interval notation