Consider the equation y=2x2+9x+1. When x=−1, what is the value of y?
56,457 results

Algebra 1b HELP
Consider the equation y=2x2+9x+1. When x=−1, what is the value of y? This question is a 'enter correct answer'. It doesn't give me any options. But, I did the math three times already, shouldn't Y=10? 
Algebra2
Complete parts a – c for each quadratic function. a. Find the yintercept, the equation of the axis of symmetry and the xcoordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1. f(x) = 2x2 2. f(x) = x2... 
Calc
The slope of a curve at each point (x,y) is given by 4x  1. Which of the following is an equation for this curve if it passes through the point (2,3)? A) y=4x²x15 B) y=x²4x9 C) y=2x²x7 D) y=2x²x E) y=2x²x+7 
algerba
What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = −2x2 − 3x + 8, and what does it mean about the number of real solutions the equation has? What are the solutions to the quadratic equation 4(x + 2)2 = 36 Mischa wrote the ... 
$$college algebra$$
Consider g(x) = 2x2 + 36x  142 for x > 9. Find g1(12). If this value does not exist, the type DNE in the space provided. 
Algebra
Solve. (–10x3 + 30x – 20) ÷ (–5x + 5) • 2x2 – 2x + 4 • –2x2 – 2x – 4 • –2x2 + 2x + 4 • 2x2 + 2x – 4 How? 
Math
Consider the following 2x2 system of linear equations, x + y = 3 x + (a^2  8)y = a If the system have a unique solution, then a takes any value except a=3 and what? 
Algebra 2
If f(x)= x2 + 2x  6 and g(x)= 3x2  5x  7, find f(x)g(x). A) 2x2  3x + 1 B) 2x2 + 7x + 1 C) 2x2  3x  13 <my choice D) 4x2  3x  13 
Math
For 1 and 2, use integer values of x from 3 to 3 to graph the equation (1) y = 2x2 + 3 (2x squared) (2) y = 1/3 x 2 (x is in absolute value) 
math
(please solve step by step) solving equation (6x+2)/4 + (2x²1)/(2x²+2) = (10x1)/4x we got roots as 
Algebra
Determine the number of realnumber solutions to the equation 2x2  x  5 = 0, given the graph of y = 2x2  x  5 
Algebra
If the sides perpendicular to the wall have length x feet, which of the following (A, B, C, or D) represents the area A of the garden? A(x) = –2x2 + 30x A(x) = –2x2 + 60x A(x) = x2 – 60x A(x) = 2x2 – 60x 
adult education
How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? o If you replace the equal sign of an equation with an inequality sign, is there ever a time when the same value will be a solution to ... 
multivariable calculus
Consider the surface given by the equation: 2x2  3z2  4x 4y  12z + 2 = 0 (a) Write in standard form ) (b) Determine and classify the traces with planes parallel to the xy, xz and yz planes. (c) Hence classify the surface. 
math
consider the equation x^2+kx+1=0 a single fair die(dice)is rolled to determine the value of the middle coefficient, k. the value for k is the number of dots on the upper face of the die. what is the probability that the equation will have real, unequal roots? 
Math
What is the value of the descriminant of 2x213x7=0? And what can you learn to know about the roots from that value? 
college algebra
find the zeros of f,f(x) = 2x2 + x − 21 x= ? larger value x= ? smaller value 
Algebra
For the given quadratic equation convert into vertex form, find the vertex, and find the value for x = 6. Show your work. y = 2x2 + 2x +2 (1/2)y=x^2x1 (1/2)y+1=x^2x (1/2)y+1=(x1/2)^214 (1/2)y=(x1/2)^25/4 y=2(x1/2)^2+5/2 Is this right ? 
Algebra
For the given quadratic equation convert into vertex form, find the vertex, and find the value for x = 6. Show your work. y = 2x2 + 2x +2 (1/2)y = x^2  x  1 (1/2)y + 1 = x^2  x (1/2)y + 1 = (x  1/2)^2  1/4 (1/2)y = (x1/2)^2  5/4 y = 2(x1/2)^2 + 5/2 would this be ... 
Chemistry
1. Write the balanced equation. Use ONLY this equation to reference how the reactions below will shift. Consider whether there is an addition, a removal, or no effect to the reaction. Co(H2O)6^2+ + 4Cl^ <> CoCl4^2 + 6H2O 2. Write the equilibrium expression for the ... 
Maths
Solve the quadratic equation 2x²  4x + 1 = 0 How many solutions are in the equation 3x² + 4x  7 = 0 
Math
Solve the quadratic equation 2x²  4x + 1 = 0 How many solutions are in the equation 3x² + 4x  7 = 0 
geometry
f(x)=2x²Bx+4 and f(3)=13, what is the value of B? 
math
Use a graph of f or some other method to determine what, if any, value to assign to f(a) to make f continuous at x = a. HINT [See Example 2.] (If there is no such value, enter NONE.) f(x) = x 2x2 − x ; a = 0 
math
graph y=x2,y=2x2 and y=1/2x2 on the same 
algerba 1
Solve by graphing 1. 2x27x+5=0 2. 2x2+x6=0 
Algebra
When 3x2 – 2x + 1 is subtracted from 2x2 + 7x + 5, the result will be what? do I subtract 3x2 – 2x + 1  2x2 + 7x + 5 like this or 2x2 + 7x + 5  3x2 – 2x + 1 like this? 
Math: Please check my answers
1. What is the degree of the monomial 3x2y3? 2 3 5 6 2. What is the simplified form of 8b3c2 + 4b3c2? 12bc 12b3c2 12b6c4 12b9c4 3. What is the simplified form of (4j2 + 6) + (2j2 – 3) ? (1 point) (0) 6j2 – 3 (1) 6j2 + 3 (0) 6j2 + 9 (0) 4j4 + 3 4. What is the difference of ... 
Algebra
Find the zeros of f. f(x) = 2x2 + x − 21 x = ____ (smaller value) x = ____ (larger value) 
algebra
Find the zeros of f. f(x) = 2x2 + x − 21 smaller value = ___ larger value = ___ 
algebra
Did I do this problem the correct way if so is there a shorter way to explain this? x(x + 6)(x + 4) = 24x x(6 + x)(x + 4) = 24x x(6 + x)(4 + x) = 24x (6 + x) * (4 + x x(6(4 + x) + x(4 + x)) = 24x x((4 * 6 + x * 6) + x(4 + x)) = 24x x((24 + 6x) + x(4 + x)) = 24x x(24... 
calculus
Consider the function f(x)=4x3+2x2+5, and let c be a number in the interval [01]. For what values of k is there a c in this interval such that f(c)=k? 
AP AB Calculus
Linear approximation: Consider the curve defined by 8x^2 + 5xy + y^3 = 149 a. find dy/dx b. write an equation for the tangent line to the curve at the point (4,1) c. There is a number k so that the point (4.2,k) is on the curve. Using the tangent line found in part (b), ... 
algebra
)Find a value of s such that x – 4 is a factor of f(x) = x3  2x2+ sx + 4. 
MathematicalModels
Consider the BlackScholesMerton model for two stocks: dS1(t)=0.1S1(t)dt+0.2S1(t)dW1(t) dS2(t)=0.05S2(t)dt+0.1S2(t)dW2(t) Suppose the correlation between W1 and W2 is 0.4. Consider the dynamics of the ratio S1/S2, where A,B,C,D,F,G,I,J,K,L are constants to be found: d(S1(t)/... 
Math
Solve: 1.) 2x² + 24 = x² The answers I obtained were: x = i√24 and x= i√24 are these correct? 2.) 9x³ = 25x 3.) 5x²  x = 7x²  5x  2 4.) 2x² = x³ + 4x  8 ~Thank you 
math
evealuate the given function for the x value. f(x)= x2+1/4x+2,g(x)=x3+1/2x2+x find (f+g)a 
math
Evaluate each expression for the given value of the variable. 2x2 for x =3 
algebra
Evaluate each polynomial for the given value of the variable. –x25x+6; x= 3 2x24x1; x= 5 
Maths
If zeros of p(x)=2x27x+k are reciprocals of each other,then find the value of me 
Algebra
Given below are equations for 2 planes in R3. 3x1 − 2x2 = 10 x1 + 2x2 + 4x3 = −2 Explain why these two planes must intersect in a line. 
math
Graph the quadratic functions y = 2x2 and y = 2x2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs. 
calculus
Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19 
calculus
Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19 
Math (Calculus) (mean value theorem emergency)
Consider the graph of the function f(x)=x^2x12 a) Find the equation of the secant line joining the points (2,6) and (4,0). I got the equation of the secant line to be y=x4 b) Use the Mean Value Theorem to determine a point c in the interval (2,4) such that the tangent ... 
math
Graph the quadratic functions y = 2x2 and y = 2x2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs. (3 points) 
Algebra
Can someone help me solve this equation?/ [SQRT(2x2 + 5x + 6)]=x 
Algebra
Evaluate the function at the given value of the independent variable and simplify. f(x) = 2x2  5x + 6; f(x  1) 
Algebra
I need help doing this problem, should I not get the same answer with each technique? Please help. What three techniques can be used to solve a quadratic equation? Demonstrate these techniques on the equation: 2x² + 3x + 1 = 0 
calculus
Consider the following. y = (2x2 + 5)(x3 − 25x) at (5, 0) (a) At the indicated point, find the slope of the tangent line. (b) Find the instantaneous rate of change of the function. 
Vectors
Consider the lines L1: [x,y,z] = [4,2,k] + s[1,13] +t[2,3,1] Determine a value of k that is 10 units away from the plane with the equation 10x7y+Z28=0 
calculus
equation of the tangent line to the curve y = 2x²x+10 at the point (1,13) 
mathalgebra 2
What are the solutions of the quadratic equation? 2x2 – 16x + 32 = 0 
Math .. qustn repost
If α and β are the root of the equation 2X²7X3=0 Find α  + 1 + β β  + 1 α 
math
The value of the term middle in the expansion (2x2 + 1)10 , x=0.5 is: (a) 77 (b) 462 (c) 330 (d) 252 what is the answer and how ? 
Algebra
A gardener has 60 feet of fencing with which to enclose a garden adjacent to a long existing wall. The gardener will use the wall for one side and the available fencing for the remaining three sides. (a) If the sides perpendicular to the wall have length x feet, which of the ... 
I would like to understand my calc homework:/
Consider the differential equation given by dy/dx=(xy)/(2) A) sketch a slope field (I already did this) B) let f be the function that satisfies the given fifferential equation for the tangent line to the curve y=f(x) through the point (1,1). Then use your tangent line equation... 
algebra2
this equation represents the area of a rectangular chicken coop a=2x24x+2 
Calculus
Determine the equation of the tangent line to the curve y = 2x²1 at the point where x = 2 
Algebra
Which equation represents the axis of symmetry of the function y = –2x² + 4x –6? (1 point) y = 1 x = 1 x = 3 x = –3 
Algebra
Where do you insert parenthesis to make this equation true: 3x5+42x2+64=15 
MATH
If α and β are the root of the equation 2X²7X3=0 Find α/β+1 + β/α+1 Working answer please 
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 X^2 + 4x + c = 0. 
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 X^2 + 4x + c = 0. 
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 either equation and ... 
Numerical Analysis
show that the equation xcosx2x2+3x1=0 has at least one solution in [0.2,0.3] 
Math
For questions 1 and 2, use integer values of x from –3 to 3 to graph the equation. 1. y = –2x2 + 3 (1 point) 
math
For questions 1 and 2, use integer values of x from –3 to 3 to graph the equation. 1. y = –2x2 + 3 (1 point) 
Algebra II
Explain, without doing any calculations, why there cannot be a Real solution to the equation p5 + 2x2 + 3px + 7 + 8 = 2: 
arithmetic
How do I solve these questions? 3 1/3  2 2/5= 2.75 + .003 + .158 = 7/20 is equal to ? What is the value of the expression 2x2+ 3xy – 4y2 when x = 2 and y =  4? 16x  8 = If 2x – 3(x + 4) =  5, then x = – 3(5 – 6) – 4(2 – 3) = 
math
So is the function, f(x)= 2x² 3x + 4 linear or nonlinear? Find f(3) and f(3) for this function. I have the answer f(x)= 2(3)² 3(3) + 4 =29 and f(x)= 2x² 3x + 4 =49 I hapo this is correct and this is non linear? 
Calculus
Which of the following is the general solution of the differential equation dy/dx = 2x/y? y2 = x2 + C y2 = 2x2 + C < my answer y2 = 4x2 + C x2 − y2 = C 
differential equations
Consider the 2nd order differential equation: x''(t)=xA(x^21)x'(t) x(0)= 0.5 x'0)= 0 ''= 2nd order,'= 1st order where A is a positive constant.As the value of A increases this equation becomes increasingly stiff. Convert this equation to two firstorder equations. please ... 
math
I'm having some troubles with these. Thanks in advance. If a>0 find the minimum value. If a<0 find the maximum value. 1. y=x²+2x+5 2. y=2x²3x+4 These are functions for parabolas, so f(x)=ax²+bx+c when a does not equal 0 In both your examples, the "a", which is the ... 
ap calc
Consider { a sin x + b, if x ≤ 2π { x^2  πx + 2, if x > 2π A.) Find the values of a and b such that g(x) is a differentiable function. B.) Write the equation of the tangent line to g(x) at x = 2π. C.) Use the tangent line equation from Part B to write an ... 
Calculus
Consider the differential equation, dy/dx=(x+1)/y^2 with the initial condition y(0)=3. Write down the particular solution, and hence, calculate the value of y when x=8.7, to 3 dec places. 
Algebra II
When asked to solve the rational equation 11/2x^2+x15=5/2x5x/x+3 a student multiplied both sides of the equation by the expression (2x2+x−15)(2x−5)(x+3). Was this the best thing for the student to do? If not, what should the student have done? 
Maths (Linear and Quadratic Equations)
I need to solve a pair of equations where one is linear and the other is quadratic. 2x2 + 3xy + y2 = 0 3x + y = 2 last 2 in 2x2 is square root two, same after y2. help please!!!!!!!!!!!!!!! 
PreCalculus
Find the inverse of the following quadratic equation. Hint: Complete the square first. y= 2x²+16x5 
maths
Write the system as a matrix equation and solve using inverses. x1 + 2x2  x3 = 3 2x1  x2 + 3x3 = 0 4x1 + 4x2  x3 = 12 A. x1 = 2, x2 = 3, x3 = 1 B. x1 = 1, x2 = 2, x3 = 1 C. x1 = 1, x2 = 2, x3 = 0 D. x1 = 1, x2 = 3, x3 = 1 
PRECALC QUESTION
Solve for "x" and "y" given the following matrix equation: (2x, 0.5y, 2, 1) * (3, 2, 0, 1) = (24, 19, 6, 5) (the matrices are going from left to right, they're all 2x2's.) 
Operations research
36) Consider the following minimization problem: Min z = x1 + 2x2 s.t. x1 + x2 ≥ 300 2x1 + x2 ≥ 400 2x1 + 5x2 ≤ 750 x1, x2 ≥ 0 What is the optimal solution? 
calc
Consider a function f : {R}^2 \to {R}^2 for which f(4, 4) = (3, 3) and f{D}f(4, 4) = (5 4) (3 0) < this is a 2x2 matrix The linear approximation of f at the point (4, 4) is (written as a row vector) is L(x,y) = (___,___) thanks, I have no idea where to. Since they ... 
AlgebraB2
1. What are the coordinates of the vertex of the graph? Is it a maximum or minimum? 3. How is the graph of y = –2x2 – 4 different from the graph of y = –2x2? (1 point) 4. Graph the function. Identify the vertex and axis of symmetry. 
Maths
From looking at a periodic function, we had to decide on the equation for it. I got: y = 1.05 sin x2pi/11.72 + 1.55 1.05 is the 'a' value of the equation 2pi/11.72 is the 'b' value for the equation 1.55 is the 'd' value of the equation we were told not to take into ... 
statistics
27. Consider the following hypothesis test. H0: µ = 15 Ha: µ ≠ 15 A sample of 10 gives a sample mean of 8.9 and population variance of 9. Consider the following data drawn from a normally distributed population: 4, 8, 12, 11, 14, 6, 12, 8, 9, 5, α = 0.01 a) At &#... 
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 and solve for y. Post ... 
math
State the solutions, or estimated solutions, to each quadratic equation in Exercises 23–26 by examining the graph of the related quadratic function equation 2x2  3x  4 = 0 and Graph:y=2x^23x4 Can someone help me with this 
Math
a) Find the product (1/2x2+y2) xy b) Simplyfy 5/3a2b x (3/4ab3) x (4/5a2b2) and find the value for 2= 2 and b= 1. c) Divide x (5x2  80 by 5x (x+4). Thanks in anticipation. 
math
Let f(x)=2x2+40x+25. Given that f(x) leaves the same remainder when divided by x−a as when divided by x+2a for a positive integer a, what is the value of a? 
precalculus 11
I am asked to solve the absolute value equation of 1/2x +1 =x+1 graphically. I can solve this algebraically and consider two cases for the absolute value one being positive and the other negative. I know this will be a straight line and when I solved it algebraically x=0 the... 
precalculus 11
I am asked to solve the absolute value equation of 1/2x +1 =x+1 graphically. I can solve this algebraically and consider two cases for the absolute value one being positive and the other negative. I know this will be a straight line and when I solved it algebraically x=0 the... 
maths
The real numbers x and y satisfy the nonlinear system of equations {2x2−6xy+2y2+43x+43yx2+y2+5x+5y==174,30. Find the largest possible value of xy 
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 equation and solve for y. ... 
math
Hi I wanted to check my work for this problem. Consider the points A(1,0,0) B(2,2,2) and C(0,2,1). 1) Find the vector CA x CB I got 2i 3j +4k for this 2) Find an exact value for the area of the triangle ABC. I got sqrt29/2 for this. 3) Plane II(1) is 2x+3y4z=2. A second ... 
ordinary differential equation
consider the differential equation d^3x/dt^3  9(d^2x/dt^2)+ 27(dx/dt) 27x = c0s t +sin t + te^(3t) a) show that characteristic equation of the differential equation is (m3)^3 =0 (b) Hence, find the general solution of the equation. 
math
I need to insert grouping symbols in the expression so that the value of the expression is 14 2x2+3(to the 2nd power)4+3x5 I have done it in every way and can't get 14 
math
Can anyone help me with dq i week 2Post your response to the following: How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation with an inequality ... 
math
The quadratic equation frequently appears in both the equilibrium and acidbase sections of General Chemistry. Therefore, it is useful to refresh the use of the quadratic before applying it to chemistry questions. Which of the following answers is a viable solution to the ... 
Algebra
How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation? If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the same value will be a ...