Solve the triginometric equation analytically. Use values of x for 0 less then or equal to x less then 2pi The equation for this question is sin2x + cos2x = 0
71,624 results
math
(1)Is the Equation true, false, or open? 4y + 8 = 6y + 3 A. True; the expressionas are the same for all values of variables B. False; the expressions are never the same ****** C. Open; there is a varible (12)Which equation is an Identity A. 7  (9x + 3) =

math
7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at $2.25 each to meet that goal? Write and solve an inequality. a. 2.25k (greater than or equal to) 180; k (greater than or

algebra
(1) Is the equation true false or open? 9p + 8 = 10p + 7 A. open;there is a variable ***** B. true;the expressions are all the same for all values of the variiables C. false;the expressions are never the same (12) Which equation is an identity? A. 11  (2v

ALGEBRA WORD PROBLEM! HELP!
And if a length of a rectangle is 3 more than twice the width and the are is 90 cm squared than what are the dimensions of the rectangle? The width of the rectangle is 43.5 and the length of the rectangle is 87. All together when you add it up it will make

Algebra 2
1)which of the following is equal to (2x/5  9)+9? a) 2x/5 b) 5x/2 c) 2x  45/5 d) (2x  9)+ 45 2)the equation y  100x + 2000 can be used to represent the monthly salary of a salesman, y,when he sales x computer systems. What is the salesman's monthly

Math
Hi everyone, my name is Emerson. I was wondering if anybody could help me on a test. I'm stuck on some, but I think I know some others. Thank you! 1. Translate the phrase "nine more than two times a number" in to an algebraic expression. A. 9x + 2 B. 2x +

Algebra 2
Amelia is documenting the height of sunflower plants each week. She has determined the function to be f(x) = 3x + 3, where x represents time and f(x) represents the height of the plant. Which of the following options describes the restrictions to the

Algebra
Jordan uses a linear equation to model the data in a table. Which reasoning might Jordan have used in the decision to model the data with a linear equation? The products of corresponding x and yvalues are equal. The ratios of consecutive yvalues are

Substitution Method in Algebra!HELP PLZ!
Use the Substitution method to solve the system of equations. 3x + y = 5 4x  7y = 10 multiply first equation by 4 multiply second equation by 3 thus both equations have same x or y value in this case it is the x value. 12x + 4y = 20 12x  21y = 30 solve

CalculusHELP!!!!
Show that the function y=c_1 e^x cos(x)+ c_2 e^x sin(x) satisfies the differential equation y''2y'+2y=0 for any values of c1 and c2, then find the values for those constants that solve the initial value problem y(0)= 1, y'(0)= 1

math
(1) Is the equation true false or open? 9p + 8 = 10p + 7 A. open;there is a variable ***** B. true;the expressions are all the same for all values of the variiables C. false;the expressions are never the same (12) Which equation is an identity? A. 11  (2v

ALGEBRA 1!PLZ HELP!
Use the Substitution method to solve the system of equations. y  2x = 5 3y  x = 5 Solve the first equation for y. y = 2x5 Substitute that for y in the second equation and solve for x. Then use the value of x to substitute back into the first equation

math
With regards to question J: The variables x and y are connected by the equation y = x2  x  5. Some corresponding values of x and y are given in the table below. x 4 3 2 1 0 1 2 3 4 5 y 15 7 a 3 5 b 3 1 7 15 (a) Calculate the values of a and b (b)

algabra
Note: Remember to show all of the steps that you use to solve the problem. You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. (2 points) *Step 1:

math
1AND PRODUCTION sum of roots of the equation :X²X6=0 2FOR what values of A the equation has no solution ax ² +3 x7 = 0 3For what values of x the equation has 2 solution X²X+C=0 4Solve the equation (X1)²4=0 5Solve the equation a)2/2

Math
I just don't understand this question: h(t)=A*b^x h(3)=4 h(5)=40 Solve for b Would you plug 3 into the x and set it equal to 4? (4=A*b^3) How would you solve for that because in the next question they go on to ask you to solve for A using the b you

Math
Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x 4y =8 x=4, y=1 for 6x  2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value for x in the other

Substitution MethodPlz help
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=4 (y+2) + y = 4 solve for y. Then, x= y+2 i don't get it.How did you get that?What

math, algebra
How do I solve for the following: Directions solve each literal equation for the individual variable. 2x + 3y 6 (for x ) Linear equation It has to equal something. What you have is a statement, not an equation.

Calculus
Consider the function f(x)=6xcos(x)+5 on the interval 0 is less than or equal to x, and x is less than or equal to 1. The Intermediate Value Theorem guarantees that there is a value c such that f(c)=k for which values of c and k? Fill in the following

Math 3
If you want to be eligible for partial credit, please show your work. Solve the following system of equations using any method. y=1/2x+3 y=1/3x2 Try substituting the equations. if y=1/3x2, then 1/3x2 = 1/2x+3 Solve for x, then plug your solution in for

solution of an equation
can someone please give me an example of a solution of an equation An equation is a statment with the equal sign = in it. If we have y=2x+3 and we're asked to find x when y=7 then we would have to solve 7=2x+3 The solution of that equation is x=2. Was

math
What is the first step in solving the linear system {2x − 3y = 11 {−x + 5y = −9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve

Algebra
Find the values of the polynomial for the given values of the variable. x25x6 x=3 x=2 I got 0 for the first one and 0 for the second. Am I figuring them wrong? (and that is an x squared, not 2x) (3)^2 5(3)6 (9)+156=0 Thanks! you are right in

Math
If the equation 3x^4+2x^36x^26x+p=0 has two equal roots, find the possible values of p. x1 is a factor so after replacing x=1 I got p=7. But I don't know any other possible values of p. I got p=1 but I solved it through inspection. Please help.

Math
The equation 2x^2+2y^2+x+4y+2c=0 represents a circle.(let's name it S1) 1)Find the values of a,b and and show that c

College Physics
When I graphically find a vector sum and then analytically solve for the resultant, I am getting two completely different answers. Why might this be?

bobpursly,.math
Ok, assume it equals zero. 2x + 3y 6=0 subtract 3y from each side. add six to each side. divide both sides by two. its how its in the book i'm suppost to solve for x. but how? How do I solve for the following: Directions solve each literal equation for

Intermediate algebra
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater

math
Solve the equation 8 cos^2 X 2 =0 given that 180< or equal to X

Math  Solving Trig Equations
Solve each equation for 0 is less than and equal to "x" is less than and equal to 360 3sinx = 2cos^{2}x  I don't know how to solve this equation...this is what I have, but I don't know if I'm on the right track or not 3sinx = 1  2sin^{2}x 3sinx  1 +

math
What is the first step in solving the linear system {2x−3y=11 {−x+5y=−9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve the

trig
Solve the given triginometric equation analytically. Use values of x for 0 less than or equal to x less than 2pi P.S Thanks Reiny for your last post, if you are still online.

trig
Solve the triginometric equation analytically. Use values of x for 0 less then or equal to x less then 2pi The equation for this question is sin2x + cos2x = 0

trig
Solve the given triginometric equation analytically. Use values of of x for 0 less than or equal to x less than 2pi sin^2x  2sinx = 1 How do I get towards the answer of 3.569, 5.856 Thank you again

trig
Solve the given triginometric equation analytically 2 sinx = tanx

trig
Solve the given triginometric equation analytically 7 sinx  2 = 3(2  sin x) If your are online, thank you my dear Reiny:) Priya

trig
I am almost finished iwth my questionings:) Solve the given triginometric equation analytically sin4x  cos2x = 0 Priya

algebra
What are the intercepting points of y^2=4x and x^2=y I set both equations equal to 0, but only get x=0 and there is another intercepting point. please help! Graphically, y=x^2 is positive for all values of x, whether positive or negative. The second

Calculus
For the function f(x) = x/(3x+1) find the equation of the line which is tangent to the curve f(x) at x=2. Solve analytically (an exact answer is required) Please show steps. Thanks.

Algebra II
I need some help with some problems as well as need some checked. Could you please help me? Thanks! 1. How do you graph y=1/x 2. How do I the x and y intecepts using a graph? Solve and check the linear equation. 9. (4x2)+7=3(x+3) I got 14 10.

MATH
I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is the prob. x+y=5 x2y=4 equation 1 x+y=5 equation 2 x2y=4 Multiply equation 1 by 1. Add equation 1 to equation 2. The x term cancels. Solve for y. THEN, put the value of y into

math
how would you solve for y in this problem: x=(y^2+3y)^(1/3) would it equal: y= x^3/y  3 ? and what about this problem: x= 1/[(y^2+3y5)^3] would it equal: y = y/x + 5/y  3? I would appreciate your help very much! Your equation is correct but it does not

Math
1) When will the dependent variable in the equation y=√x+43 equal or exceed to 4? A) x > or equal to 0.17 B) x > or equal to 45 C) x > or equal to 48 D) x > or equal to 53 2) The function t=√d/16 models the time (t) in seconds that an object has been

Maths
1) Factorise x2 6x +8 (the 2 is squared) 2) Hence solve this equation: x2 6x +8 = 0 Also, what would the line look like on a graph with the equation y = 10/x Thankyou =) 1) x^2  6x + 8 factors are: (x  2)(x  4) >look for possible factors of 8 and

Trigonometry
Hi, I really need help in understanding how to solve trig equations. How do you solve this equation? Solve the equation on the interval 0 < or equal to x < or equal to 2pi. sinx = (square root of 3)/2 I appreciate your help. Thank you!

PreAlgebra [repost ]
I need help on these three questions BEFORE 10:00 PM. Please someone show me how to do them step by step! Solve the equation for y in terms of x then find the solutions of the equation for the given values of x. 1.x + y = 1 [values of x: 3, 1, 2] 2.x+ 4y

Maths  Linear Relations Simple Problem
Find the values of m for which the line with equation y=mx+2 does not intersect the parabola with equation y=(x1)^2 + 5. I am not sure how to solve this problem. I know that both equations equal each other when it intersects but what happens if they don't

Math
What is the solution to the nearest tenth to the equation below? 3x 14 less than or equal to 5 * sorry if í wrote the question weird but í couldn't do some equation signs* A. X less than or equal to 3 B. X less than or equal to 3 C. X greater than or

Algebra
I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x8/2x) +5= (x+6/x)

math
just an algebra question. how would you solve: (3x^2 +5)(3x^2 +5) ^ means power :] Since you have not given us an equation, it is impossible to "solve" your problam. Please repost with the complete equation, so we can help you. I hope this helps a little.

Math help
Help with any of these would be greatly appreciated! THANK YOU! 1. How would i solve 3x^2  4 = 0? And in simplest radical form? 2. How would i determine the values of 'k' if the graph y=2x^22x+3k intersects the xaxis at two distinct points? 3. The path

MATH HELP!
Help with any of these would be greatly appreciated! THANK YOU! 2. How would i determine the values of 'k' if the graph y=2x^22x+3k intersects the xaxis at two distinct points? 3. The path of a basketball can be modeled by the equation h(d)=0.13d^2+d+2.

algebra
how would i find an equation of a line that goes through points(1,6) and (3,10)?? thanks A straight line is y=mx+b Substitute the points to make two equations. 6=m(1)+b 10=m(3)+b Two equations; two unknowns, m and b. Solve for m and b, then plug back into

math
Can someone help me figure this out. The difference of two numbers is 80. The second is 8 less than 5 times the first. What are the two numbers? first write an equation 5x8=y and then solve it Tiff gave you part of the solution. 5x8=y However, there is

Matrices Word Problem
The stopping distance of a car traveling 25mph is 61.7 feet, and for a car traveling 35 mph it is 106 feet. The stopping distance in feet can be described by the equation y = ax² +bx, where x is the speed in mph. (a) Find the values of a and b. (b)Use

trig
solve the equation 2 tan C3=3 tan X4 algebraically for all values of C in the interval odegrees lessthan or equal C lessthan360 degrees.

algebra2
solve the equation: First: x + 3y = 5 Second: 3x  y = 5 should i use substitution or add them? "First" + 3 times "Second" eliminates y: x + 3y + 3*(3x  y) = 5 + 3*5 > 10 x = 20 > x = 2 Inserting in "First" gives: 2 + 3 y = 5 > 3 y = 3 > y =

calc
What are the intercepting points of y^2=4x and x^2=y I set both equations equal to 0, but only get x=0 and there is another intercepting point. please help! You can solve for one of the equation and substitute it into the other equation. In this case you

ap calc
let f(x)= bx^2+6x, if x< or equal to 2 ax^3, if x>2 find the values of a and b such that f(x)is differentiable at x=2 I need help with this question I know you have to set both functions equal to each other. but I don't know how to solve for a and b

math
the radius of a circle when the numeric values of the circumference and the area are equal PI r^2= 2PI r r^2 2r=0 (r0)(r2)=0 So what r values satisfy the equation. There are two. so what is the answer r=0 or r=2

Algebra
Directions say that I have to solve and graph the equation using words.I have to include whether the lines are dotted or solid, how to graph each of them and where the solution is shaded. 2x3y>_9 and x4y>_8 both should be solid, because the solution is

Precalculs
I have no idea how to do these type of problems. Problem Solve each equation on the interval 0 less than or equal to theta less than 2 pi 42. SQRT(3) sin theta + cos theta = 1  There is an example prior to the

algebra
5x2y=5 y5x=3 substitution Substitute 5x +3 for y in the first equation, then solve it for x. Substitute 5x +3 for y in the first equation, then solve it for x. When I subsitute 5x+3 into the equation I get x=1/5 and y=2 is this correct? You are close!

Algebra
PLEASE HELP! 1. Part 1: Using the digits 4 and 10, and the variable x, write an equation and solve. Part 2: Using the digits 4 and 10, and the variable x, write an expression and simplify if neccessary. 2.Equation: 10 + 4 = x 14=x Expression: 10(4 + x)

Math
In the interval 0 'less than or equal to' x 'less than or equal to' pi find the values that satisfy the equation cos 2x  sin x = 0

Calc, Mean Value Theorem
Consider the function : 3x^3  2x^2  4x + 1 Find the average slope of this function on the interval. By the Mean Value Theorem, we know there exists a "c" in the open interval (2,3) such that f'(c) is equal to this mean slope. Find the two values of "c"

Algebra
I have a few questions that I need help with. Solve the radical equation, and check all proposed solutions. 5. x square root 3x2=4 I don't understand this problem. Solve and check the equation. 10. (x^2+14x+49)^3/420=7 would I have to multiply each

maths
please help im quite stuck with this question a boat sails in a straight line, its position at time t is (t+600,2t300). a man stands on a small island, at position (200,100). due to fog, he can see objects of radius 200m centred at his position. a) find

Algebra
Hi. I don't understand how to graph this function. would i make a table of values, or just use the equation, or how would i go about doing this? f(x)=x^25 on the domain of 3

college (Physical Science/Physics)
I am having difficulty with this equation. I have been working with it for several weeks! Please Help. the equation is this: solve for Lf Lf=[(CwMw+CsMs+CcMc)(ToTf)//MiCwTf values Cw=1.00; Mw=143.4; Cs=0.11; Ms=30.0; Cc=0.22; Mc=57.7;To=23.9;

Intermediate Algebra
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater

Algebra
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater

algebra, logarithms
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater

math
Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater

PreCalc
Find the values of a and b if f(x)=ax^3+bx^2+4 is exactly divisible by both (2x+1) and (x–1). With these values of a and b, solve the equation f(x)=0.

Algebra
Totally lost here! Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of

i need help,math
okay i am completely lost after reviewing everything my mind is blank cans some one help me with the steps. Solve by completing the square x^2=5x+2 1st: You need to bring the 5x+2 to the other side so you have x^25x2 2nd: Find the values to where when

math (this correct)
What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your

algebra
Im lost i don't know how to do this can someone show me step by step how to solve this For what value does c does the equation have one real root? Hint using the values of a and b found in the equation, solve D = 0 for c. Consider the quadratic expression

algebra
Im lost i don't know how to do this can someone show me step by step how to solve this For what value of c does the equation have one real root? Hint using the values of a and b found in the equation, solve D = 0 for c. Consider the quadratic expression

algebra
the profit made fram the sale of a dvd players from a company is found by subtracting the costs from the revenue. p=r+c. Suppose that the companys revenue can be expressed with the function R(x)=x^2+59x and that the total costs for the company can be

Math
What is the difference between an equation and an expression? Include an example of each. Can you solve for a variable in an expression? Explain. Can you solve for a variable in an equation? Explain. Write a mathematical phrase or sentence for your

Chemistry
I had to find the absolute zero from a graph with the following points: Temperature (K) / Volume (mL): 318 4.5 308 4.3 303 4.1 294 4.0 284 3.9 275 3.7 271 3.2 I graphed the points (with the temperature on the yaxis because the lab indicated a vertical

substitution method
3x+y=5 x+2y=0 Your equations: 3x + y = 5 x + 2y = 0 Let's solve the second equation for x: x = 2y Now let's substitute 2y for x in the first equation to solve for y: 3(2y) + y = 5 6y + y = 5 7y = 5 y = 5/7 Now let's substitute 5/7 for y in the

calculus
Consider the function f(x)=65x−cos(x)+2 on the interval 0 less than or equal to x less than or equal to 1. The Intermediate Value Theorem guarantees that there is a value c such that f(c)=k for which values of c and k? Fill in the following mathematical

math
Solve for ALL values of x, where 0

Math
For which values of x is y equal to 16 in the equation y=3x+4 ? A. 60 and 36 B. 36 and 60 C. 20/3 and 4 D. 20/3 and 4

Math
Hello again! I would appreciate help very much on this. Thank you! 1) For which values of x is y equal to 16 in the equation y=3x+4? A) 60 and 36 B) 36 and 60 C) 20/3 and 4 D) 20/3 and 4

HS Calculus/math
Solve the equation cotx=4 in the interval 0

algebra
Please help. I have something from my algebra 1 class: For the equation ax+c+bx+d, where a is not equal to b and c is not equal to d. What is x? I know you're supposed to solve for x but I don't know how?

Math 222
Please help me solve this equation? Sorry my addition and equal key does not work. x^23x plus 5 equal 0

maths
a)If one root of the equation x^2 + a(3a5)x = 2(x+4a) is negative of the other. Find the values of a . b) If a>0, use the result of (a) to solve the equation.

math
when I try to solve the equation 9x5y=4, my answer is y=9/5+4/5. is this correct because I am having trouble trying to do a table of values for this equation.

Math(Please check answers)
1) Solve the equation: 15(7x6) = 3x5 My answer is (85/108) 2) Mary and her brother collect coins. Mary has 4 times the number of coins that her brother has. Together they have 175 coins. How many does Mary have? My answer is 140 3) Perform the indicated

algebra
Note: Remember to show all of the steps that you use to solve the problem. You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality. (2 points) *Step 1:

trigonometry
Solve the equation 6 cos x^2+sin x=4 if 0 is less than or equal to x is less than or equal to pi

equations of tangents and normals
hi, i'd really appreciate some help solving this question! I am completely at loss here :/ The question is to: Find the equation of the normal to y=loge(x+2) which is parallel to the line with equation y+3x5=0 I am fine at solving these sorts of equations

Algebra
Can someone show me step by step how to do this problem to have an example to go by so I will be able to do my other problems. Thanks Solve by substitution 4x12y=5 x+3y=1 I know that you have solve one of the equations. I have picked the second one so

PreCalculus
Solve the equation 2x + 5y  3z = 1. Write the general solution as a matrix equation. I did some guessing and ended up getting this much: [x]= [1/2 _ _ ] X [1] [y]= [ 0 1 0 ] X [s] [z]= [ 0 0 1 ] X [t] however I still can't figure out the last two values