Pre Calculus
21,824 results, page 5

pre calculus
evaluate if possible the function at the given values(s) of the independent variable. Simplify the results. f(x)=7x4 a) f(0) b) f(3) c) f(b) d) f(x1) 
pre calculus
The conic section whose equation is x^2  3y^2  8x + 12y + 16 = 0, is in Position is I. Is this statement true or false 
Pre CALCULUS
How many real solutions does the equation x+5=x have? Please explain your answer to the best of your abilities thanks :) 
PRE CALCULUS
How many real solutions does the equation ãx+5=x have? Please explain your answer to the best of your abilities thanks :) 
Pre Calculus
Given Triange ABC with an area of 100.2 a = 32.5 c = 29.2 Find angle B, expressed in degrees. 
precalculus
please help me with thisone thanks solve the inequality algebraically. Express the solution in interval notation. (x8)^2/x^236 > 0 
Precalculus
find the trig functions of angle x if the terminal side of x passes through the point (12, 5). 
pre calculus
Use properties of logarithms to find the exact value of the expression log_7 (343 * 7^15) 
Pre calculus
1. convert polar equation to rectangular coordinates: r^2=4sin2theta 2. find the coefficient of x^5 in the expansion (x+2)(x+1)^8 
Precalculus
Determine the values of the trigonometric functions of t if P(t) lies in the second quadrant and on the line y = −2x. 
pre calculus II
describe the domain, range,asymptotes and if the graph increase or decrease, and is this is a funtion from this equation y=53^x 
pre calculus
Algebraically solve the system of equations using any method you wish 3x10y+z=5 4x+9yz=6 13y+z=2 
Precalculus; urgent ! Please help !
Find the inner product of a and b if a= (3, 0, –1) and b= (4, –2, 5), and state whether the vectors are perpendicular. 
precalculus
find the common difference in an arithmetic sequence in which a(sub 15)a(sub7)=1. what should i start with ?? 
PreCalculus
Solve the equation 4sin x = e^x on the interval (0, 1). Correctly rounded to two decimal places, x= 
pre calculus
Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)/(sec^2 x))1 = (f(x))^2 f(x)= ?? 
pre calculus
what is 36.1 and 50.8 rounded to three decimal places? I was never really good at this stuff....please help! 
Pre Calculus
Use a calculator to evaluate csc 3ð/14 A. 1.604 B. 1.279 C. 47.686 D. 42.314 E. .739 
Precalculus
Given f(x)=6x^47x^323x^2+14x+3, approximate each real zero as a decimal to the nearest tenth. 
PreCalculus
I've tried to simplify this a million different ways, but I can't seem to get the right answer. Please help. ((1/(x+h)^3)(1/x^3))/8h 
PreCalculus
Write an equation in slopeintercept form of the line with the given parametric equations. x=t+6 y=2t4 
PreCalculus/Trigonmetry
Write the equation of the line that is parallel to the xaxis and goes through the point (1,4). 
PreCalculus
Factor the polynomial completely, and find all its zeros. State the multiplicity of each zero P(x)= x^3x^2+x 
PreCalculus
Find all solutions of the equation and express them in the form a + bi. 36x^2 − 12x + 2 = 0 
PreCalculus
Help please, am i correct? The border line of the linear inequality 4x2y < 1 is solid. True False < 
PreCalculus
Help please Find the equation, in standard form, of the line passing through the points (2,3) and (4,2). 5x2y=16 y=5/2x+8 5x+2y=16 2x3y=9 
PreCalculus/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)? 
PRE  CALCULUS
A statement Sn about the positive integers is given. Write statements Sk and Sk+1, simplifying Sk+1 completely. Sn: 1 + 4 + 7 + . . . + (3n  2) = n(3n  1)/2 
Precalculus ( Absolute value)
Why does 7 + 3x = x 1 have no solution? I could plug in, for example 5, and the answer would be positive. Thank you =) 
PreCalculus
how to make a xy table for the following greatest integer equation when using 1,2,0,1,2 to plug into x f(x)=2[x], g(x)=[2x], f(x)=[[x]], and g(x)=[[x]] 
Pre calculus
1. Write in terms of cos and sin function. cotx*secx Show work. 
Pre Calculus
Write the equation 5^2= 25 in logarithmic form. a. log255=2 b. log25=25 c. log52=25 d. log225=5 e. log525=2 
pre calculus
Use the halfangle formula to simplify the given expression. squareroot 1+cos12x/2 
Precalculus
Plss... help me.. what is the equation of parabola with vertex on the line y=x, axis parallel to Ox, and passing through (6,2) and (3,4)? thanks! 
precalculus
create a p(x) with the following conditions: A) Vertical asymptotes at x=5 and x=2 B) A double root x=3 C) A horizontal asymptote at y=3 
pre calculus
Use the information to solve the triangle. If two solutions exist find both. 1.A=36°, B=98°, c=16 2.a=4, b=8, c=10 3.A=35°, b=8, c=12 
Pre Calculus/Trig
find the area of a circle inscribed in triangle ABC where a=9, b=13, and the measure of angle C=38 degrees 
PreCalculuscheck answers
Write the equation of the circle that passes through the point (3,4) and has its center at (1,2). Answer: (x1)^2 +(y2)^2 = 8 Thanks for the help. 
Precalculus
Which of the following is NOT a root of z^2 = 1sqrt3i to the nearest hundreth. a) 0.22+1.24i b) 0.970.81i c) 1.020.65i d) 1.180.43i Thanks for any help you can give me. 
PreCalculus IB
If R is the remainder when each of the numbers 1059, 1417, and 2312 is divided by D, where D is an integer greater than 1, compute the value of D  R. 
PreCalculus
Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these 
precalculus
How do i know if a conic section is a circle, ellipse, hyperbola, or parabola? based on it's equation such as 4x^2  y^2 + 24x + 4y + 28 = 0 
pre calculus
Write the trigonometric expression in terms of sine and cosine, and then simplify. cot(x)/csc(x)sin(x) 
Precalculus
The problem is Find the difference quotient and simplify your answer F(x)=5x  x^2, F(5+h)  F(5) over h ^2 this means power of two 
pre calculus
Ok not sure if it's just me with a block solve the following equation in the real number system. x^4 +3x^3 + 3x^2 + 21x  28 = 0 
Pre Calculus
Exponential Growth and Decay Find the halflife of a radioactive substance that decays by 5% in 9 years. 
Pre Calculus
Exponential and log functions What initial investment at 8.5% compounded continuously for 7 years will accumulate to 50,000? 
pre calculus
Solve the following inequality and write using interval notation x^2  22/ x 4 >_ 7/2 this sign > has the slash underneath Help me! 
precalculus
use a sum or difference formula to find the exact of the trigonometric function cos(13pi/12) 
Precalculus
Use the remainder theorem to find which of the following is not a factor of x3 + 12x2 + 47x + 60 the answer is x5 but idk why 
PreCalculus
Simplifying Complex Fractions [(x+3)/12] / [(4x5)/15] [(x+3)/12] x [15/(4x5)] (x+3)5/4(3x5) (5x+15/12x20)< final answer Did I do this right. If not could you please explain how to do it correctly 
precalculus
proving that the statements are true for all natural numbers 1+2+3+....+n=n(n+1)/2 i don't understand when trying to prove that P(k+1) = 1+2+3+...+k+k(k+1)= 1/2 how do you do this step??? 
PreCalculus
Find the inverse of the following quadratic equation. Hint: Complete the square first. y= x²+14x+50 
precalculus
partial fraction; use the rational roots theorem to factor denominator. x^3 + 2  x^4 +8x^2 +16 i got to that and im stuck Ax+B + Cx+D   x^2 +4 x^2 + 4 
pre calculus
Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x cos x) = 1/(f(x) f(x)= ??? 
pre calculus please help
Find all solutions of the equation tan^5 x  9tan x =0. The answer is Ak\pi where k is any integer, the constant A=??? 
PreCalculus 11
In Triangle DEF, DE = 11cm and EF = 9 cm. For which measure of angle D is it possible to draw two scalene triangles. 
PreCalculus
Find a quadratic function f such that f(1)=3, f(2)=5/2, f(1)=1 I came out with 3 a+b+c=3, 4a+2b+c=5/2, ab+c=1. And I know that I should do synthetic division but I am stuck. 
precalculus
Find the real and imaginary zeros for the following polynomial function. T(b)= 147b^335b^219b+3 
PreCalculus
What makes a mathematical induction true? I know how to solve both steps in the proof, but how do you reach this conclusion? 
PreCalculus
Find a polynomial with integer coefficients that satisfies the given conditions. P has degree 2 and zeros 2 + i and 2 − i. 
PreCalculus/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 yaxis? y = 3 x = 2 y = 2 x = 3 < 
Precalculus/Trignometry
Which of the following is a correct equation for the line passing through the point (1,4) and having slope m = 3? A. y4=3(x+1) B. y=3x+1 C. 3x+y=1 D. y=1/4x3 
PreCalculus/Trigonometry
Solve the following system of equations algebraically. Verify your solution by using matrices. 3xy=0 5x+2y=22 
PreCalculus
Use an Addition or Subtraction Formula to find the exact value of the expression: tan7π/12 
college precalculus
what is the equation of lowest degree with real coefficients if two of its roots are 1 and 1+i? A. x^3+x^2+2=0 B. x^x^22=0 C. x^3x+2=0 D. x^3x^2+2=0 e. none of the above i don't get it is it (x+1) (1+i) 
precalculus
Use the rational root theorem with polynomial division if needed to find all the zeroes of: P(x)=2x^43x^3+3x^2+5x3. 
pre  CALCULUS
Find the indicated sum. Show your work. 4 k=1 (1)^k(k+11) ￼Inbetween the 4 and k , Theres a backwards 3 sign 
pre  CALCULUS
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2 
PreCalculus
Can the following be reduced any further? 14x^2/56y^3 I did not reduce because there were different variables in the numerator and denominator. Thanks 
pre calculus
Given that sinx= 3/5 and that x terminates in Quadrant 2 , determine the values for cosx and tanx Find Cos x/2 
PreCalculus
Write the standard form of the equation of the line that passes through the point (4, 2) and is perpendicular to the graph of 3x  2y + 9 = 0. 
Pre Calculus
Find the exact value ofcos (u+v) given that sin u= 7/25 and cos v=−12/13. (Both u and v are in Quadrant II.) 
PreCalculus
Why do we need to use the sum/difference formulas to find exact values? Please explain. 
Calculus
An important problem in mathematics is that of root finding: that is, given a function f (x), finding any roots of f in an interval. Exact methods exist for many functions: • In the case of a linear function f (x) = ax + b, this is easy. – If a ≠ 0, then x = −b... 
Pre Calculus
In this problem we are supposed to find all real solutions. It is x(1x)=6 and I know that the first step you use distributive and get xx^2=6 but where do you go from here. 
Precalculuschck answers
Determine the value of w so that the line whose equation is 5x2y=w passes through the point at (1,3). Answer: w=11 
pre Calculus
how do you find additional points on a line with a slope of 1/2 and a given point of (7,2)? im sorry but i still cant get an answer for this question. 
Pre Calculus Repost Please Help
Can someone help me solve this problem: cos^2x + 5cosx  2= 0 I am having some trouble finding x 
precalculus
the function has a real zero in the given interval. approximate this solution correct to two decimal places: f(x)=x^4x^37x^2+5x+10; (2,3) 
pre calculus
A velocity of 30 mph is resolved into two components, each of which makes an angle of 45 degrees with it. Find their magnitude. 
PreCalculus
It may look lame but I can't work out how to solve (9) sqrt(4x^2) = 4x + 5sqrt2. I need some guidance, please. 
pre calculus
Solve the exponential equation Express you solutions in exact form only Please show your work e^2x  9e^x  20 = 2 
pre calculus
solve the following equation in the complex number system Please show all your work. 5x^5 + 32x^4  5x  32 = 0 
PreCalculus
Find the maximum value of the function for the polygonal convex set determinded by the given system of inequalities. 8x + 2y > 36 –3x + 6y < 27 –7x + 5y > –18 f(x, y) = 9x + 5y 
precalculus
solve the the following inequality. write your solution in interval notation. x^349x<0 _ (I don't know how to make the sign on my computer) 
PreCalculus
Find the inverse of the following quadratic equation. Hint: Complete the square first. y= 2x²+16x5 
pre calculus
Express statement as an equation. Use the given information to find the constant proportionality z varies inversely as t. If t 3, then z 5. 
PreCalculus/Trigonometry
Help please If, f(x)= 3/x+2 √x3, complete the following statement. Round your answer to the nearest hundredths place. F(7)= ? 
PreCalculus
Find all the real zeros of the polynomial. Use the quadratic formula if necessary. 4x^3 − 10x^2 + 9 
PreCalculus/Trigonometry
Solve the following system of equations algebraically. Verify the solution by using matrices. 8x2y=5 12x+3y=7 
pre calculus
In how many ways can a family of six be seated at a round table if the mother and father must sit together? 
pre  CALCULUS
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z = 9 2x  3y + 4z = 7 x  4y + 3z = 2 A. {(7z/5+34/5 ,2z/5 +11/5 , z)} b. {( 7z/5+34/5 , 2z/5 11/5 , z)} c . {( z/5+ 34/5 , 2z/5+11/5 , z)} C? 
precalculus 11
The infinite series 1+3x +9x^2 +27x^3+.. has a sum of 4.The value of x is? so if 1/1r I substitute 1/13x =4 so x=1/4 if someone could confirm that my answer is correct? thanks so much 
Pre calculus
Use the given conditions to write an equation for the line in pointslope form. Passing through (5, 7) and (8, 6) 
pre calculus
Use Gaussian elimination to write the system of equations given below in rowechelon form 2x+4y+z=4 2x4y+6z=13 4x2y+z=6 
pre calculus
Use Gaussian elimination to write the system of equations given below in rowechelon form. 2x+4y+z=4 2x4y+6z=13 4x2y+z=6 
PreCalculus
sketch f(x) such that f(x) is increasing on (inf,2) and f is decreasing on (2,0), f(x) has point discontinuity at x=2, f(x) has a horizontal asymptote of y=4, f(x) is an odd function. 
PreCalculus Help?
What conic section is drawn by the parametric equations x=csc t and y cot? A. Parabola B. Circle C. Ellipse D. Hyperbola 
Polynomials
Determine if the expression 4m^56m^8 is a polynomial in one variable. If so, state the degree. I really don't understand how to do this, and I can find it in my precalculus book.