Trig check my work please?

89,471 results, page 45

trig help

simplify cosec40(sin40+sin80+cos120) help step

trig help

simplify cosec40(sin40+sin80+cos120) help step

Trig

What are the focus and directrix of the parabola represented by the equation:8(y-6)=(x+2)squared?

Trig/PreCalc

Find the interior angles of the triangle with vertices (-4,1), (1,-6), and (5,-1)

Trig/PreCalc

Find a parametrization for the line segment with endpoints (5,2) and (-2, -4).

help me please 14th amendment

explain how the court has interpreted the fourteenth amendment to apply the bill of rights to the states. i have visited all the websites but i'm not sure of what they are saying. i was wondering if someone could summarize in simpler words. here's what i came with: the 14th ...

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(x-1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x-8/2x) +5= (x+6/x) Solve the equation. 7.(x/...

check math

Here are my answers. Can you check if I got the right answers? Thank you! (x+3)(x-3)>0 answer: x<-3 or x>3 x^2-2x-15</=0 answer: -3</=x</=5 12x^2=3x answer: x=1/4 sin2x=sinx, 0</=x</=2pi answer: x=pi lx-3l<7 answer: (-oo,oo) (x+1)^2(x-2)+(x+1)(x-2)^2...

Physics

Hello, I really don't get something about work and I would like that someone help me, Please. .. Well I have an exercise about two objects that are connected by an ideal rope that pass through a pulley that has a moment of inertia, so my problem is: when I use "energy" to get ...

science

A group of wind turbines operates in an open field. Which statement about the wind turbines is true? Answer A. The wind turbines produce movement of air that does work. B. The wind turbines do work by using electricity to produce power. C. The wind turbines cannot do work ...

Math

Which Is More Correct? A Watch That Doesn't Work At All Or A Watch That Loses A Minute Each Hour? BTW It's a Trick Question😉 All I have is the one that loses a minute each hour because it's logical reasoning but I just wanted to double check

English

Thank you very much. I still have a few questions. 1) Your sentences are confused and sometimes disconnected. Check the spelling in the dictionary before writing a word and make sure you are using tenses correctly. 2) White people failed (their mission) because they didn’t ...

English

This is a thank you letter to a company. Please check it and let me know what you think. If I need to change something or its just fine. Check for any errors. Thank you very much for taking the time to meet with me on April 14 regarding the position of Administrative Assistant...

Algebra

Can someone help me with this please. Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x) but when melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x)she got 20x^3-48x^3+32x thus Andrews solution does not appear to check. Why is that? ...

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...

chem

λ for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 5. I am not certain of your difficulty here. Can you amplify? How did you make the symbol for lamda? (1/lambda) = R(1/n1^2...

Matt 115

Hello, I just wanted to know if someone could check my work to see if they are right or wrong. Thanks :) 5. Find 2/5 of 4/11. Answer: 8/55 8. Are 3/21 and 3/54 equivalent fractions? Answer: No 14. Write in decimal form 8 583/10,000 Answer: 8.0583 22. Solve for the unknown: 8/...

English

1. If you don't work hard, you will be poor. 2. If you don't work hard, you will become poor. 3. If you don't work hard, you will get poor. 4. Unless you work hard, you will be poor. (Which expressions are commonly used? Can we use all the expressions?)

physics-please check

is this right?: when a form of energy changes from one form to another some energy may transfrm into a useful form, those useful form of energy is high grade energy.while the rest of the energy will always change to form we cannot use.which is called the low grade energy. if i...

Math

which mountains peaks can be seen from Oahu. Island Distance(Mi) Mountain Height(ft) Molokai - 40 - Kamakou - 4,961 A) Radius of earth= 3960 mi. Determine angle formed at the center of the earth. B) Determine length of the hypotenuse. Could someone go through the steps to ...

Check My work ( math)

1.) Years: 1 2 3 4 5 6 7 8 Height: 2.1 3.2 6.8 7.3 11.2 12.6 13.4 15.9 about about tall would you expect these trees to be after 22 years ? a.)22.31 ft b.)35.2 ft c.)44.25**** d.)46.2ft 2.)temp:68 77 83 85 89 94 96 99 number of cones:403 447 457 465 489 503 543 576 what is the...

English

Hi, I need to cite a source for a paper but I cant tell whether its a paper or an article or an article from a journal or book. Can you please help. "title of work" author from jump cut, no 27, July 1981, pp 27-32 copyright Jump Cut: A review of Contemporary Media, 1982, 2005 ...

Plz help check my answer!!?

The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5 minutes. Repeated studies of this section of interstate are considered normally distributed. What percent of commuters drive between 20 - 25 minutes to work...

Science AZ

Define what is meant by the terms initiative and referendum as they are used in the Arizona Constitution. Please check the Government definition of "initiative" in this online dictionary. http://dictionary.reference.com/browse/initiative Then click the "referendum" link in the...

A Raisin in the Sun

In what way does Mama show herself to be stronger than her children? (Please check the following): Mama is willing to give up her dream for the good of the family.

History of health care

Please check my answer thanks :) You belong to an HMO your are helping to control plan costs for everyone True or False I said True

Health/ Basic Clinical Procedures

please check my answer thanks True or False Korotkoff sounds are related to the determination of blood pressure I picked True

Health/ Basic Clinical Procedures

please check my answer thanks true or false the carotid pulse is located on the anterior side of the neck I said true

medical records

please check my answer thanks you very much A medical should be completed within how many days after a pt is discharged A 30 B 35 C 60 D 15 E none of the above I picked D

spanish

please check: "¿A qué hora empieza el concierto de la orquesta?" " _____ el periódico, empieza a las ocho." a. después de b. según c. antes de d. es necesario B?

Literature

Please can you check my answer.. 13. According to Renaissance philosophy, commoners often represent A. reason. C. pride. B. love. D. appetite. I think it it... B. love. It that correct ?

English

1. How about goind economics camp? 2. How much did you spend? I bought a $50 shirt and a $5 socks. (Would you check the expressions? Please correct incorrect expressions?)

Math 115

Please check answer. The sale tax rate in a state is 7.5%. If you pay a tax of $17.50 on an item that you purchase, what is its selling price? 17.50*7.5=$131.25 is this correct?

MATH 7th GRADE

Would someone please be kind enough to check the answers for these problems?Last round for tonight. Thank you. 1. 3/16 - 1/8 = 1/16 2. 151/4 -11 5/8 = 3 5/8 3. 2 x 3/7 = 6/7 4. 1/2 x 7/8 = 7/16 5. 1 3/8 2 1/2 = 3/7/16 6. 1/2 divided by 2/3 = 3/4 7. 8 1/4 divided 1 3/8 = 333/32

algebra

could you please check my answer and show me correct way . thanks for your help solve the equation if pssible -3|6n-2| +5 = 8 note:: 6n-2 is abolute value 6n-2 is positive -3|6n-2| + 5 = 8 |6n-2| = 6 6n - 2 = 6 6n - 2 +2 = 6 + 2 divide by 6 n = 8/6 6n-2 negative -3|6n-2|+ 5...

chemistry/check please

923.85 grams of gaseous ammonia condenses into liquid.How much energy was released? answer: 1268.28852 = 1268 kj

Chemistry(Please check)

Classify the following functional groups: 1)CH3CH = CH2 I think this is an alkene 2) CH3CHCH3 I think it is an alcohol. ! OH Would you agree with my answers?

Can someone please check my answer for chemistry

Compelete the following table for an ideal gas. P= 7.74*10^3 Pa V= 10.3 mL N= ? T= 25°C I'm getting 3.20e-4, but my online homework says its wrong, what am I doing wrong?

algebra2 please check my answer thanks

find the vertical asymptotes of the following rational function(remember VA is X) x+6/(x^2+11x+30 ) my answer is x+6/(x+6)(x+5) cancel alike term i get 1/(x+5 )and V.A:x=-5 is that right thanks

algebra2 please check my answer thanks

find the vertical asymptotes of the following rational function(remember VA is X) y=x+6/(x^2+11x+30 ) my answer is x+6/(x+6)(x+5) cancel alike term i get 1/(x+5 )and V.A:x=-5 is that right thanks

SCHOOL

SHOOL IS NOT FUN!!!!!! ..... Jk.... April Fools!!!! Have a good day everyone and please don't use jiskha to cheat. Just use it to check your answers! :)

Math

What is the best estimate for the quotient. 5,397 division sign 62 a. 80 b. 90 c. 800 d. 900 My answer to the above is b Can you please double check my answer and let me know if I am right or wrong

Calculus Please Check my answer

Set up, but do not evaluate, the integral which gives the volume when the region bounded by the curves y = Ln(x), y = 1, and x = 1 is revolved around the line y = -1. ANSWER: v = ∫[1,e] π(4-(lnx+1)^2) dx

Math (Trig)

a ferris wheel has a radius of 10m and is one meter above the ground. If the ferris wheel makes 1 revolution every 20 seconds, write an equation that gives the height above the ground of a person on the ferris wheel as a function of time if that person starts (t=0) 1/8th of a ...

Calculus

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Enclosed by y = x and y = x^4

math

jon and jony can do a piece of work alone 12days and 24days respectively.they were working together but after a few days jon went away.then jony can do the rest work in 3days.how many days are needed to complete the whole work?

physics

A sphere of mass 78 kg is attached to one end of a rope as shown in the figure below. It is found that the rope does an amount of work W = 3550 J in pulling the sphere upward through a distance 4.6 m. Find the work done by the force of gravity on the sphere. My work W= -78 * 9...

math

Find the second derivative. y = sqrt(3x+4) I will be happy to critique your work. We don't do it for you. Thanks. Please post under one name. Thanks. who are u?

Calc Help

q=(1000/p+1)^2 - 1 find q' Please help. Question on review sheet. I will be glad to help you, or critique your work. What do you think the way to solve it is>

Physics

How long does it take a 19 kW steam engine to do 6.8x10^7 of work? I have no idea how to solve this... Would someone please help?

math

whats the integral of e^(3sqrt(x))? i think i'm supposed to use substitution but i don't know what to substirute, i tried u= x^(1/3) but it didn't work out, please help!

science

how do water powered mills work???? please help!!!!!!!! due tomorrow only in 5th grade make it not complicated

US History

Can you please tell me where can I find more info about Hannah Galler, a holocaust survivor: her life and work?

science

the making of polymers is an example of the category of work done by chemists calledd ________ fill in the answerr. please helpp!

Algebra

I also needed help with this problem to: 8 divided by 4 times 2 - 7 + 3 Again could you please show me the work involved in getting the answer. Thank you.

Chemistry

Calculate the volume of 0.6M HNO3 necessary to neutralize 28.55 cm3 of 0.45M KOH. please show work and detail.

chemisrty

Under what conditions of temperature and pressure do you think that the gas laws would work best? Please be specific

calculus

Given x+xy+2y^2=6 find the coordinates of all other points on this curve with slope equal to -1/3. Please show work.

Calculus

Given x+xy+2y^2=6 find the coordinates of all other points on this curve with slope equal to -1/3. Please show work.

Alberbra

Please help with graphing a quadratic function. y=(x-1)^2 Got stuck at y=(x-1)(x-1) and p=1, q=1 Which doesn't work, because you can't fix a vertex with one point on a graph.

algebra 1

please explain to me how I work out problems such as "-2-3" to get the correct answer and show the same on a number line

math

find an equation of the linear function f using the given information. please show all steps and work f(-1)=1, f(1)=-2

algebra 1

3/4 + 1/8 = then simplifly i really don't get this and i need explanation of how you did that to do the rest of my home work like how did you get this and why? please and thankyou. very much

Math - Problem4

Solve the inequality. Express your solution using interval notation and please show all of your work. x^4 - 7x^2 - 14 > 0

algebra

solve by the substitution method: 8m+n=47 m-5n=52 thank you having trouble completing please show all work so I can learn better

college algebra

Solve the following equation in the real number system. Please show all of your work. 2x^3-3x^2-14x+15=0

Pre-Calculus

It may look lame but I can't work out how to solve (-9) sqrt(4-x^2) = 4x + 5sqrt2. I need some guidance, please.

geometry

please tell me if you know of any websites that would be helpful with information on Euclid's life, the scope of his work, and his importance to mathematics

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

Chemistry

How many atoms are present in a sample of 2.0 x 10^23 molecules of C7H5(NO2)3? Do you use Avogadro's Number? And please show work.. :)

college algebra

Solve the following equation in the complex number system. Please show all of your work. 2x^5-3x^4-32x+48=0

algebra 2

how do you find a quadratic equation if you are given the solutions such as x=2/3 and x=-4 can you work out the solution of how you got your answer please

algebra

Write the slope intercept equation for the line that passes through (14,-2) and is perpendicular to 7x-10y=18.Please show work.

math - please help

What is the rotational speed (rpm) of the 64 in diameter rear tires of a tractor traveling at 6.5 mph if there is no slippage? How do I work this? Thank you.

algebra

i have to write a number in the block to make this true how do i get the answer for 70-30=40- please show me a example so i can complete my work

PHYSics PLEASE I NEED HELP

wally holds a pillow over his head for an hour does he do any work ? if not y? what energey changes is accouring?

math

The following sets of ordered pairs are functions. Give a rule that could describe each function. Please show your work. A.{(5,3),(7,5),(11,9),(14,12)} B. {(2,5),(3,10),(14,17),(5,26)}

college algebra

graph the function and state the vertex axis of symmetry, the intercepts, if any: f(x)=x^2-8x+15 Please show work so i can understand this. thank you

statistics

A student scored 30 percent on a test, and was in the 24th percentile. Explain these two numbers! Please show work!

college algebra--I really need help!!

Find the domain of the composite function FOG f(x)= 2/x-3; g(x)= 7/x please show work so I can undestand

maath

how many times did the minute hand of a clock rotate during March this year ? please explain how you work it out,thanks

calculus

Find the midpoint of the line segment joining the points P1 and P2 P1=(-1,5); P2=(2,0) m=(x,y)=? type an ordered pair Please show work

MATH

2(7w-1w+7)>122 ? what work would i do? im just learning inequalties and i have a quiz tomorrow with problems like this, please help!

Calculus

How do I answer these questions. Please show work. The answers are through the link as a png image. THanks! h t t p : //goo.gl/NNf9A

Chemistry

How many grams of magnesium sulfate would you need to make 0.500 L of a 10.0% M/V solution in water? Please show work.

Math

Let p and q be the roots of the polynomial mx^2 + x(2 - m) + 3. Let m1 and m2 be two values of m satisfying p/q + q/p = 2/3. Determine numerical value of m1/(m2)^2 + m2/(m1)^2. Please work the complete solution.

Math

Let p and q be the roots of the polynomial mx^2 + x(2 - m) + 3. Let m1 and m2 be two values of m satisfying p/q + q/p = 2/3. Determine numerical value of m1/ (m2)^2 + m2/(m1)^2. Please work the complete solution.

Calc Help :(((((

Find the derivative of the following function showing your work and fully simplifying your answer. Show steps please! Thank you!!!!!! f(x)=(x+3)^3(x-8)^5

Math

o is the center of the regular pentagon ABCDE. How many degrees are there in OAB? Please explain or show work A.36 B.54 C.72 D.108 E.126

Algebra 2

(192x^2y+72x^3)-(24rxy-9rx^2) I need help factoring completely in groups and can you please show all your work thank you

Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x/(x+1) x x^2-1/(x^2+x-6) Please help me as I'm on a deadline to finish this course

Calc

∫ (2x+1)/(x+1) dx Please show steps if you work it. I think it's a partial fraction and worked with decomposition. Not sure though.

Biology

If 25 individuals were alive in 1955 and 500 existed in 2013, what is r? Show work please! a) 475 b)2.99 c)0.052 d)0.029

math

Inverse of h(x)=7-9cos(-(x+1)). h^-1(x)=? show work please! Thanks.. also accidentally put this as an answer somewhere pls ignore that!

Geometry

How do you use slopes to write the proportion to find the value of x for this problem... (4,5), (1,2), (x,0) please show your work and explain thx

Writing

how do I work cite a video from youtube please help me And also how do I write a paper aobut racism and what sources can I useñ

algebra HELP PLEEEEASE

Solve the following system using elimination or substitution. show your work. y = x^2 - 2x - 6 y = 4x + 10 Please explain how to do this and the answer! THANKS!

science

How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width. Please help

engineering

How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width. Please help

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100