88,790 results, page 14

1. ### Math Algebra check

Solve: 3x^2-11=0 Is the answer" +- sqrt11/3?
2. ### English

Is Mercutio a foil to the Nurse? I think they are not, but can you please check my answer? Thanks
3. ### Algebra II (check)

Assume that no denominator equals 0. 2+i/1-3i = 2+i/1-3i = (2+i/1-3i) * (1+3i/1+3i) = (2+3i^2)/(1-9i^2) = (2/1) - (1/3i) = 2-1/3i(answer)
4. ### Math 116 algebra please check

Evaluate x+y/6 for x =57 and y=3 the answer is x+y/6=10

6. ### to ms.sue

now i get it .later ill post you back to check the answer,okay?
7. ### Compound Inequalities

Solve. 5 < x - 2 < 11 a. 5 < x < 11 b. 7 < x < 13 c. 7 < x < 11 d. 5 < x < 16 My answer is b. Can you check my work?
8. ### Algebra

Could someone check this for me please? The equation is 2/x+3 = 4/x+7, and I think the answer is x=1, I just need help showing the steps of how to get there if anyone knows? Many thanks for any help
9. ### english

ms sue can u plzzz check my 1nd answer
10. ### Math help ;-;

Solve the equation. Check your answer. 5x-4(x+9)=2x-3 can anyone help me how to do this plz ;-; sorry
11. ### Algebra II (check)

Assume that no denominator equals 0. (2x-3)^2 = 2x * 2x -3 * -3 = 4x-9(answer)
12. ### Math problem check

Simplify: (2/a + 6/b) / (8/ab + 4/a^2) I have the answer as a(3a+b)/(4a+2b) Is that correct?
13. ### Mathematics

Find the slope line of (1,4) and (2,1) -3 3•• -1/3 1/3 Check my answer
14. ### math check

if f(x)=x^2 find f(2-sqrt6) I have the answer as 10-4sqrt6 is that right?

For the function 2x-x^2 find f(4)-f(2) / (2) I got -8-0/2 so my final answer Is -4
16. ### Math

Explain how you could estimate 22% of 78 to check if your answer is reasonable.

Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k. f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x) =0 ?
18. ### algebra 1

What is the value of c so that y=x^2+9x+c is a perfect square trinomial? A. 18 B. 9/2 C. 9/4* D. 81/4 Check my answer please I think it's C.
19. ### Math(factoring) plz check

bx - by ANSWER: FACTOR b(x+y)
20. ### Math. Can someone check my answer

Find the slope of the line through (-9,-10) and (-2,-5) A.- 5/7**** B.-7/5 C.5/7 D.7/5
21. ### math

can someone check my work? divid t^11/ t^3 is the answer t^3r2
22. ### intermediate algebra-can somebody check my answer

Evaluate the expression m^2+93+7 when m=-4 -4^2+9*(-4)+7 does it = -13
23. ### Math

What is the value of the range of the function f(x)=x^2 + 2 for the domain value 1/4? A. y=2 B. y=2 1/4*** C. y=2 1/8 D. y=2 1/16 Can anyone check my answer?
24. ### math

Could someone please check my answer to this question: Evaluate the expression [(x^n)(y) + (y^n)] ^-2n for x=-2, y=3 and n=-1 =[(x^-1)(y)+(y^-1)]^-2(-1) =[(x^-1)(y)+(y^-1)]^2 =[(x^-2)(y^2)+(y^-2) =y^2/x^2(y^2) =3^2/(-2)^2(3^2) =9/4(9) =9/36 =1/4
25. ### Math

How can you check the answer to a decimal multiplication problem
26. ### Math

Please check my answer. 11 1/9% of what number is 600? I have 5400.54

Am I correct? Solve the following inequality. f + 2 1/2 < -2 f (2 1/2 - 2 1/2) < (-2 - 2 1/2) f < -4 1/2

29. ### Algebra

Can someone check my answer please? Find the corresponding y values for x = -2,-1,0,1,2,3 if y = x^-x-2. My answers are under Y. X Y -2 -4 -1 -2 0 -2 1 0 2 4 3 10
30. ### Algebra 1B--check

Solve for y in the following system of equations. x + 4y = -38 -x - 6y = 58 My answer 1.) -10 2.) 6 3.) 12 4.) 10
31. ### URGENT! Last calculus question!

Hey! So, I was wondering if someone could answer this. I am mad studying for my exam and I still have a few questions left that I just don't have time to answer, and the assignment is due tomorrow. Thanks and here is the question: Use calculus and algebraic methods to do a ...
32. ### calculus

Question: what is the derivative of f(x)=x^2*e^x Would the answer simply be 2x+e^x?
33. ### Calculus

limit of (10^n)/(n!) as n->infinity The answer is zero. Can you prove it?
34. ### college Calculus Help!

If f(x)= ∫(21,x) t^5 dt then f'(x). my answer was 1/6 (21^6-x^6) it said it's wrong.
35. ### Calculus

same as my question below please help me post your answer on here if you have one on these forms of course h t t p : / / w w w . p h y s i c s f o r u m s . c o m / s h o w t h r e a d . p h p ? t = 4 2 1 7 6 3
36. ### Calculus

find dy/dx and d^2y/dx^2 of 3x(y^2) -2y=2 please give the answer not an example that dosent help me
37. ### calculus

find the domain of function f(x)= (5x + 4)/(x^2 + 3x + 2) is the answer.. x can't be -2 or -1?
38. ### brief calculus

x/(x − 6)^2 I get ln(x-6)- 6/(x-6)+ C but it isn't correct, what should the answer be?
39. ### pre calculus

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is ||v||2?
40. ### Calculus

Find the derivative of the integral from x to 6 of ln(1 + t^2). My answer is -ln(1+x^2).
41. ### Calculus

Find the critical numbers of y=x(4-x)^1/2. The answer is x=8/3 but I got x=7/2.
42. ### Calculus

Simplify difference quotients. 1/(1+h)-1/h I got 1-1-h/h but the answer is -1/(1+h)

44. ### calculus

Use the demoivre's theorem to find the answer? (1+i)^8
45. ### Calculus

Find the first and second derivative for f(x) = x^2 - 9 / X^2 -4 please show me how you got the answer for both
46. ### college pre-calculus

simplify: (y+1)(y/1-y^2) which answer: A. Y/y-1 B. y/1-y C. y+1/y-1 D. -1 this is what i got y+1/1* Y/1-y^2=-1
47. ### Calculus - Limits

lim x--> 3 (3 - x)/ (x^2 - 9) I know the answer is -1/6, but I can't figure out how to get there.
48. ### pre calculus

Use the following vectors to answer the question. u: <-1,7> v: <6,4> What is ||u||2?
49. ### Pre-Calculus

Evaluate. 1-|200+||-2|(-5)^3|| I get 49 as an answer
50. ### Calculus

Find the slope of the curve f(x)=1/(x^2+3). My answer: (-2x)/(x^2+3)^2
51. ### Calculus

Find dy/dx for y=3tan^-1(x/2). I know the answer is 6/x^2+4 but I'm stuck at y'=3(1/1+(x/2)^2)(1/2)
52. ### Informal Logic

<21{3[2(08)44]}> Surveys show that people who use calorie information to decide which foods to eat consume on average 100 calories less than they would if they didn’t check calorie information before eating. Strangely though, people who use calorie information in this ...

Indicate whether the market price of a product will most likely go up or down in the following situations and why: a) There is a drought in the Midwest (bushel of wheat) My answer: Go up, becuase the supply is limited b)Strawberries are in season with a bumber crop My answer: ...
54. ### physics (mechanics)

find the constant force necessary to accelerate a car of mass 1000kg from 15m/s to 20m/s in 10s against resistance of 270N ? pls show work (answer is 770N just in case to check) ive been asking this question 4 times still no one answer . someone pls do .
55. ### calculus

for the point with cartesioan coordiantes (5,-2) find polar coordinated such that r>0. express it in radians. so far i got the answer to be -.38805...is dat the answer or should i add 2pie or 360 to get r>0? Add 2PI but it says to radians?
56. ### calculus

Verify the given linear approximation at a = 0. Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answer to two decimal places.) tan x ≈ x
57. ### Algebra2(check)

Would someone please check my answer for me? 1)The equation x2 + (y + 4)2 = 49 models the boundary on a local map for which Darren can hear his friend Tom on his two-way radio when Darren is at home. How far (in miles) can Tom walk from Darren's home and still be heard? 3.5 ...

Find all zeros of the following polynomial. Write the polynomial in factored form. f(x)=x^3-3x^2+16x-48 I put: x^2(x-3)+16(x=3) (x-3)(x^2+16) For zeros: x-3=0 x=0 **My teacher stated check the equation solution again. What is the value for x and hence what is the zero for the ...
59. ### calculus

At the indicated point for the function, find the following. A graphing utility's numerical derivative feature can be used to check your work. y = (x3 + 2x)3 at x = 3 (a) Find the slope of the tangent line. (b) Find the instantaneous rate of change of the function.

Find the median of 5, 8, 8, 9, 15, 18, 18, 18 Is the answer 12 ?

One solution of kx^2 +6x-k=0 is -3. Find the other solution I have the answer as -1/3 is this right?
62. ### Math/Algebra

Could you also check these to. Thanks. (4x^2 + 9x - 1) - (5 - x^2) Answer: 5x^2+ 9x - 6 (8 + 7a + 10a^2) - (a^2 - 3a - 2) Answer: 10 + 10a + 9a^2

1) 5 = 2t - s 20 = 8t - 4s Answer: Identity 2) 4t - 6s = 2 -6t + 9s = -3 Answer Identity
64. ### How to get quick responses to your math questions

Math is a wide subject, ranging from K to 11, college and university. Then there is algebra, trigonometry, geometry, arithmetic, calculus, number theory, ... etc. Not all teachers answer all math questions (many do). If you would give a little more detail on which branch of ...
65. ### Pre-Calculus

1) j(x)=-2/3x what is j(x)'s y-intercept? answer: (0,0) 2) k(x)=4 what is k(x)'s slope? answer: 0 3) g(x)=2x-5 what are the root(s) of g(x)? 4) the slope of line p if p is perpendicular to line f are the answers i provided correct? and please help me on 3 and 4
66. ### Calculus

integral 1 to 500 (13^x - 11^x) + integral 2 to 500 (11^x - 13^x) dx = (answer: 14.946) I tried typing the integrals in the graphing calculator to get the answer, but it says overflow. Any help on solving this? Thanks!
67. ### French(easy question)

Translate all this french into english. I did all of it at the bottom. Please do it as well so I can check my answers. Check my answers as well. Thanks. On passe un bon film au Gaumont. On y va? Pas possible. J'etudie pour l'interro, demain. D'accord. Alors, a demain. My ...

Homework Help: Economics PLEASE CHECK MY ANSWERS! 1. The MAIN advantage to a corporation is.. A. Ease of entry B. Limited liability for the owners C. Dividends all go to one person D. Owners share managerial duty E. All of the above (My answer: E) 2. The MAIN advantage to a ...

Determine the zeros of the function 7x^2 + 9x = 0 answers were: {-9/7} {-9/7,0} {o,9/7} {9/7} I think the answer is {-9/7,0} but I'm not positive when I worked it-If this is wrong please steer me into the correct calcs because then I don't what I'm doing wrong 2.Solution to ...
70. ### Algebra

We're doing multi-step equations, and I need help on how to check my answers? I knew how to do it on two-step equations, but now it's kind of confusing? for example, there's a problem, 6a-1 over 7 = 1 My answer was 4/3. We're supposed to insert our answer in place of the ...
71. ### 1 question Science check answer

4. Which is NOT a true statement? a. Not all fats are bad for you. b. Fats can increase your risk for heart disease. c. Saturated fats are liquid at room temperature. d. Unsaturated fats come mainly from plant foods. my answer is C. I that right
72. ### Health care

Please check my answer thanks :) Medicare and Medicaid financial issues put constraints on .... 1., physician services 2. critical care centers 3. public hospitals 4. outpatient services now here is the problem I think it is all of them but I can only pick one answer so I ...
73. ### French

Can you please check these thanks. Directions: Identify each person described below (we are in the sports chapter by the way) Part 1 1. Un garçon ou une fille qui joue -------------. Answer: un joueur ou une joueuse 2. Un joueur qui garde le but --------------. Answer: le ...
74. ### Calculus

A baseball diamond is a square with side 90 ft. a batter hits the ball and runs toward first base with a speed of 24 ft/s. (a) At what rate is his distance from second base decreasing when he is halfway to first base? Is the answer 0.0932ft/s? I don't see that it is logical ...
75. ### Calculus

Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x^3 − 16x on the interval [−1, 1]. If so, find the x-coordinates of the point(s) guaranteed to exist by the theorem. f(a)=15 f(b)=-15 f'(x)=3x^2-16 f'(c)=-15 I am now lost from here, I do not ...
76. ### calculus

relative extrema x^3 + 1/2x^2 - 2x + 5 Ok I have 3x^2 + x - 2 = 0 Am I on the right track? I think i know why I kept on asking for help with these pribelms. I forgot the step of factoring. Please check... 3x^2 + x - 2 = 0 (3x-2)(x+1)=0 x=2/3, x=-1 Correct. Nice job. If you ...

(x)/(x-2) - (x+1)/(x) = (8)/(x^2-2x) I keep getting x = 6 can someone show me how you guys are getting x = -10 The lowest commond denominator is x(x-2) x/x *(x)/(x-2) - (x+1)/(x) *(x-2)/(x-2)=(8)/x(x-2) multiplying both sides by the common denominator.. x^2 -(x^2-1x -2)=8 x+2=...

Please check these answers thanks. 1. The shadow of a vertical pole is 24.8 feet long when the angle of elevation of the sun is 42degrees 0.0'. Find the height of the pole. Answer: 22.3=height 2. From a point on a lighthouse 108 feet above water, the angle of depression of a ...
79. ### Calculus - series

I'm getting this answer wrong, can someone please help show me what i'm missing?? thank you :) Infinity of the summation n=0: [(-1)^n pi^(2n)] / [6^(2n) (2n)!] this is my work: [(-1^0) pi^(2*0)] / [6^(2*0) (2*0)!] + [(-1^1) pi^(2*1)] / [6^(2*1) (2*1)!] + [(-1^2) pi^(2*2)] / [6...
80. ### pre calculus

The base of an Isosceles triangle is half as long as the two equal sides. Write the area of the triangle as a function of the length of the base. the answer is: A=a^2times the square root of 15 ------------------------------ 4 How did they get this answer? Thanks!
81. ### calculus

is my answer to this question correct A spherical balloon is losing air at the rate of 2 cubic inches per minute. How fast is the radius of the ballon shrinking when the radius is 8 inches. Answer= .0024
82. ### psy

<22{3[2(08)]}> Surveys show that people who use calorie information to decide which foods to eat consume on average 100 calories less than they would if they didn’t check calorie information before eating. Strangely though, people who use calorie information in this ...
83. ### math,algebra

I'm not understanding so the answer should read as follows and steps: 15x^4y^9 divided by 3x^2y^2 = 5x^2y^7 Can you check this one for me. Direction. Simplify each of the following expressions where possible. 6x^2y^3+9x^2y^3 divided by 3x^2y^2 My answer: 15x^4y^6 divided by 3x...

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 2x^2...
85. ### science- cell structure

An inner and an outer membrane are characteristic of which organelle? my answer: Mitochondria and chloroplasts What is the nucleus? my answer- nucleus is a cell structure that contains hereditary information What is the nucleiod? my answer: the nucleiod is like the nucleus. ...

1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? my answer: I got 10 mm but I'm not sure if it is the correct answer. 2. For two connect pendulums to resonate, they must have the same: a) mass b) amplitude c) density d...

1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? my answer: I got 10 mm but I'm not sure if it is the correct answer. 2. For two connect pendulums to resonate, they must have the same: a) mass b) amplitude c) density d...

1. A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration? my answer: I got 10 mm but I'm not sure if it is the correct answer. 2. For two connect pendulums to resonate, they must have the same: a) mass b) amplitude c) density d...
89. ### math

Labor rate = \$12 per hour Hours worked = 36 Overhead rate = 125% Retail price of good furnished = \$185 Sales tax rate = 7% Total bill for services and parts = \$ The answer that I got was 762.80. Can you check my answer.
90. ### Calculus

What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case)
91. ### Math URGENT!

the roots of a tree are 1/8 of the tree. they are 0.87 m. how tall is the tree? my answer: 0.87 x 7 = 6.09 m please check if my answer is right thanks :)
92. ### education

Children will generally select equipment based on: a.their prior success with the equipment. B.the size of the equipment c.the brightness and boldness of the equipment's colors d. The opportunity for challenge presented by the equipment. My answer is D. Could someone please ...
93. ### calculus

an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong pane is over the airport.?When will they be the ...
94. ### math

1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the brother’s age in five...
95. ### Calculating delta H

I honestly don't know where I went wrong with my calculations. I've been adding the products separately. Then I add the reactants separately. Finally, I take the product and subtract from the initial. Could you do this so I can double check my work? HCl + NaOH = Na + Cl + H2O ...
96. ### English

Check out this site. http://www.cultureandrecreation.gov.au/articles/poetry/ Dear all, I need a poem that will help me answer the question "Is Australia seen as a Follower or a Leader?" I am yet to find 1 useful poem on that site... Maybe you should write your own poem. I have...
97. ### Calculus

I'm reviewing for a test tomorrow and two of the questions on the review had me a little stumped. Lim Sq. Rt.(x+5) - Sq. Rt (5) all divided by X-->0 X I was able to rationalize and ended up with (X)/ x ((sq. rt.(x+5))+ sq. rt.(5)) which gives me 1/ sq. rt.(5)+ sq. rt.(5) ...