# Trig check my work please?

89,826 results, page 94

1. ### trig

in triangle QRS, q=10.2m, r=20.5m, s12.8m..Solvetriangle QRS by determining the measurements of each degree to the nearest tenth of a degree
2. ### Chemsitry

How do you find the amount in moles of excess reactant that reamins Please retype that, minding your spelling. =) Can you please show me how to determine the amount in moles of excess reactant that remains Sorry about the mistakes =) This is part of an excess reagent problem. ...
3. ### dog behavior

pleaplease check my answer thanks so much Which of the following best describes when extinction occurs A When a CS is repeatedly presented and periodically followed by a US B When a CS is repeatedly presented without the presention of a US C CS and US are presented together D ...
4. ### Algebra HELP

Could someone please check this answer. Given y= x^2, how would the graph of y= x^2-2 differ? A. It shifts 2 units up B. It shifts 2 units down C. It shifts 2 units left D. It shifts 2 units right Answer: B
5. ### Spanish

Tu Commands: Please check Put it on! = ponlo or ponte Put it on (negative)! = no te pongas come here! = ven aqui! come here(negative) = no te vengas aqui go!= ve!

pleaes chack my answers: what are the horizontal lines on a map called? my answer= latitudes what are the vertical lines on a map called my answer= longitudes

Which American officer assisted Frémont's attacks in northern California? A: John Drake Sloat assisted Frémont's attacks in northern California.
8. ### English Improving writing

please check this for me he is my rough draft (again) Please check this for me thank you very much :) There are on- going problems that need to be addressed at the DMD company. First there is uneven allocation of tasks. While Bonnie and Molly are working overtime at least ...
9. ### MATH MIDDLE SCHOOL

The slash (/) line represents that the number is a fraction. divide: sqrt45 / sqrt81 = simplify: 7sqrt3 / sqrt5 = Multiply: sqrt7/sqrt8 X sqrt24/sqrt49 = Thanks for the advice regarding how to show square root symbol. Also thank for taking the time to help with these problems...
10. ### Physics

A 25 g bullet is fired from a rifle with a barrel of length 65 cm. The bullet starts from rest at one end of the barrel and experiences an average force of 1200 N due to the expanding gases as it moves down the length of the barrel. a) Calculate the work done on the bullet by ...
11. ### Math

Hi Trying to work with confusing Taylor series....any assistance would be much appreciated!! How can I use T(x)=5-9((x-2)^2)-3((x-2)^3) to approximate the f(0) ???? I realize that Taylor series f(x)=f(a)+f'(a)(x-a)+f''(a)((x-a)^2)etc... but the above T(x) is centered at x=2, ...
12. ### Geometry

A regular hexagon is circumscribed about the ring surrounding the clock face. The diameter of the ring is 10in. Find the perimeter if the clock face. Please included work/steps to solve. Thanks!
13. ### Graphing Circles - Finding the radius

A circle is tangent to the y-axis at the point (0,2) and passes through the point (8,0). Find the radius of the circle. I tried using distance formula but it doesnt work? Help please thanks.
14. ### Algebra 2

Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth. 20, 16, 18, 14, 9, 20, 16 I know i have to add all them and divide the answer by 7. And that's my mean , But Idk how to get the standard deviation ?
15. ### math

you have apple, mapple, oak, poplar, and spruce trees. about how many different groups can u make with three different trees? please help this is alot of work and i have until 4;45 to get it all done!
16. ### math

a rectangular frame has a length of 3 and 1/8 feet and an area of 2 and 3/4 feet. what is the width ,w, in feet, of the frame? 0.67 feet i don't know if i am correct so i want you to show the work with me please because i really don't understand what the question is asking me...
17. ### programming

I am working on a project called VB Auto Sales I am working in CH 2. I have just about completed the assignment but I am unable to group two separate sections. Assignment Modify the project from the Chapter 1 VB Auto Center case study, replacing the buttons with images in ...
18. ### Cultural Diversity

Would someone please check these two questins and my answers? 1.An example of ___________can be found in the gradual immersion of early Irish immigrants and their descendants across decades as they become part of and contributed to the middle class American mainstream. A. ...
19. ### Biology- check my answer (diff one)

Which of the following are true concerning living things? Check all that apply. A)They contain a vital force absent in nonliving things. B)They are composed of molecules that contain carbon-carbon bonds. C)They undergo chemical reactions to use energy they acquire from the ...

Hi, I'm really struggling with my decision about two electives that I really like. One is Journalism and the other is Creative Photography. If anyone knows or has experience can you please tell me the pros and cons about these two electives please? Also, I only have a few days...
21. ### Math

How many more of corols stamps are from Norway then from France? * France= 24% England= 22% Italy= 25% Norway= 29%* A. 5 stamps*** B. 24 stamps C. 29 stamps D. 53 stamps please check
22. ### Elimination Method Help

solve by the elimination method 5x+5y= -7 7x-3y=19 The solution is (___,___) Please help I am lost on how to work and complete this one.
23. ### find real and complex 0

Find the real and complex zeros of the following function. Please show all of your work. f(x) = x^3 + 2x^2 - 6x + 8
24. ### algebra

Write a slope intercept equation for the line with the slope-1/4 and y-intercept (0,-2)and graph the line.Please show work.
25. ### calculus

find the distance d(P_1 & P_1) between points P_1 and P_2. P_1=(4,-5)and P_2=(3,4) please show work
26. ### Math

How do I work out:if life expectancy of male is 78.9 and female is 83.6. Life expectancy is % lower than female. What is formula please
27. ### maths

How many gold coins are there in a jar of 88 coins,if there are 1/3 as many silver coins as gold coins? The answer is 66, but I cannot work it out,please explain thanks
28. ### Linux

you will design and implement a script that operates an ATM machine. Your script should be able to let users withdrawn money from their checkings or savings account, transfer money between accounts, and check the accounts' balances. Your sscript should also identify the user ...
29. ### english

I need someone to check my answers on this English quick check thanks :) 1. Adventures of Huckleberry Finn is celebrated in part for its representation of what perspective: a. modern b. optimistic c. southern*** 2. In Adventures of huckleberry finn when huck says his father ...
30. ### Calculus: Limits

++++++++|||||||||Can you please check whether or not my answers are correct and if not, can you fix them for me? Find the sum and state whether it converges or diverges? 1) 0.1 + 0.05 + 0.025 + 0.0125 + ... My answer: converges, | r | < 1 2)6 + 2.4 + 0.96 + ... My answer: ...
31. ### Math Inequalities

-9/8x greater than or equal to -1/16 can someone please check my answer? my answer is x greather than or equal to 1/18 is this correct? if not what is the correct answer and what is the correct way to solve this problem..maybe I missed a step or did not do math correctly....
32. ### Algebra

Amy has some money in her checking account. If she writes a check for \$40.50, her checking account will be overdrawn by \$21.50. Find how much money is Amy’s checking account now. My Answer (please correct if wrong): 40.5 - (-21.50) = x
33. ### physics

Starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the water and reaches a speed of 1.15 m/s by doing the work Wnc1 = +170 J. Find the nonconservative work, Wnc2 done by the water on the athlete.
34. ### math 12

the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...
35. ### CALC

the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...
36. ### Physics

You pick up a 2.5kg can of paint from the ground and lift it to a height of 1.7m .How much work do you do on the can of paint? You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do during this time?
37. ### Math

Mrs.Perry hires a landscaper that charges \$15 per hr. The landscaper says the total charge for the work done is \$120.00 Write an inequality to show h, the number of hours it took to do the work and solve the inequality.
38. ### Physics help me guys

An aricraft carrier has a mass of 8.6*10^7 kg and can cruise at 80 km/h. a) What is the work required to stop it? B) If only half of the work required to stop it is done, what is its final speed in km/h For a) I found 2.123*10^10 which is the right answer but I cant find b i ...
39. ### Physics help me plss

An aricraft carrier has a mass of 8.6*10^7 kg and can cruise at 80 km/h. a) What is the work required to stop it? B) If only half of the work required to stop it is done, what is its final speed in km/h For a) I found 2.123*10^10 which is the right answer but I cant find b i ...
40. ### College Chemistry

a 1.00-L solution saturated at 25°C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2o4= 128.09 g/mol] a) 6x10^ -3 b) 4.6x10^ -8 c) 2.3x10^ -9 d) 1.5x10^-4 if you could please work it out for me, thank you
41. ### algebra

Flying with the wind, a pilot flew 600 mi between two cities in 4 h. The return trip against the wind took 5 h. Find the rate of the plane in calm air and the rate of the wind. Please show work. thanks
42. ### 6 th grade SS

Can you check my answer What do you think the political and economic future of Cyprus will be like? The future of Cyprus will be a future governed by a new and different governmental and political structure. Like focusing on the economy instead of the politicial problems on ...
43. ### Organic Chemistry

When reading an infrared (IR) spectrum for an unknown compound, you check for certain functional groups in a certain order. If C=O is absent, you check for alcohols/phenols (-OH), then for amines (N-H), then for ethers (C-O, & the absence of -OH). So, I was wondering: If you ...

Petr has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...
45. ### French 1

I am trying this again. Incomplete french say that the people do not the activities given. Here is what I did please check for me Thanks much 1 Julie/voyager Julie ne voyager pas 2. elles/etudier Elles ne pas etudier 3. il/habiter a Paris Il ne pas habiter a Paris 4. nous/...

A 15 ft. ladder is leaning against the side of a house and forms an angle of 66o with the ground. To the nearest foot how far from the base house is the foot of the ladder? I set it up cos66=15/x 15/cos66 =36.878, rounding to the nearest ft makes it 37
47. ### Social Studies

With which animal are the Minangkabau most connected? A: cow B: water buffalo*** C: elephant D: tiger Which cultures have influenced Minangkabau life. A: Chinese and Indian B: Chinese and Japanese C: Korean and Indian D: Korean and Japanese*** Please check my answers, thanks!! :)

49. ### Trig

Find the amplitude, if it exists, and the period of: y=tan1/4x. no amplitude I got confused, is the period 4pi? And is that the same as saying 360 degrees?
50. ### trig

y = sin(-3x + 3) Amplitude = Period = Two x- intercepts = y - intercept = Domain = Range = Shift along x = Shift along y = Kind of reflection =
51. ### 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
52. ### Alge2/trig

Should the triangle be solved beginning with Laws of Sines or Laws of Cosines. Then solve the triangle and round to the nearest tenth. a=16, b=13, c=10
53. ### trig

ok I'm trying to solve for an angle knowing adjacent and opposite of a triangle so I do tangent by definition tan theta = a^-1 o how do I algebraically solve for theta
54. ### Trig

How would I do this problem? Verify that each equation is an identity. cos^2x+tan^2xcos^2x=1 the ^2 is just saying squared. ex.- cos^2x is cosine squared x
55. ### Trig

Find three additional polar representation of the point (-3, pie over 6) given in polar coordinates,using -2 pie <0 <2pie.
56. ### Trig

assume a pulley has a radius of 12.96 cm. If it takes 18 seconds for 56 cm of belt to go around the pulley, find the angular velocity in radians per seconds
57. ### Trig

a student says there can only be 360 different rays emanating from a point since there are only 360 degrees in a circle. Is this true? Why or Why not?
58. ### Trig

find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV
59. ### Trig

find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV
60. ### trig

y = 3sec3x Amplitude =_________ Period = __________ Shift along x = ____________ Shift along y = _____________ Kind of reflection = ______________
61. ### trig identities

cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.
62. ### Trigonometry

Help trig question involving discriminant? a)Find the value of the discriminant. b)Use any method to find the real roots of the equation if they exist. 2x^2+7x=0
63. ### trig

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)
64. ### Geometry/trig

A ladder, 17 feet long, leans against a wall at a 49 degree angle to the ground. How far up the wall does the ladder reach?
65. ### trig

write y=sinx-cosx in the form y=ksin (x+a), where the measure of a is in radians. answers: sqrt2sin (x+3pi/4), sqrt2sin (x+5pi/4), sqrt2sin (x+pi/4), or sqrt2sin (x+7pi/4) ...?
66. ### Algebra 2/Trig

A 5'6" person is standing near a light post that is 18' above the ground. How long is the man's shadow when he is 5' from the base of the light post?
67. ### TRIG

Triangle FGH has vertices F(0, 10), G(10, 0), and HR(1, -1). After rotating triangle FGH counterclockwise about the origin 75º, the coordinates of G' to the nearest hundredth are (2.59, ?).
68. ### Trig

A plane if flying at 200 mph with a heading of 45 degrees and encounters a wind of 100 mph from the west. What is the resulting velocity and heading?
69. ### trig

Find the indicated roots. Write the answer in trigonometric form. Fourth roots of 256(cos 220° + i sin 220°)
70. ### trig

how do you find algebraically the measure of the obtuse angle, to the nearest degree, that satisfies the equation 3 sec theta = 5 is it sec theta = 5/3 and then cos -1 (5/8) = 0.4
71. ### Math Trig

Let theta be an angle in quad III such that sec theta = -13/5. Find the exact values of cot theta and sin theta? Thank you!!!
72. ### Trig

Show that the following statement is an identity by transforming the left side into the right side. sinθ(cscθ − sinθ)= cos^2 θ
73. ### chemistry(check my work)

Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. independent of the chemical identity of the solute. C. dependent on the molar mass of the solute. D. responsible for lowering the vapor ...
74. ### Science last question

Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it is bigger*** D. box ...
75. ### math

Just want to double check please... Susie has two children, Mary and Jake. Given that Susie has Alzheimer’s and there’s a 25% chance that she passed the Alzheimer’s gene onto her offspring, what is the probability of BOTH Mary and Jake developing Alzheimer’s, based on ...
76. ### how children learn(someone please check)

What do constructivist educators believe about the learning process? A. Learning is a response to a stimulus. B. Learning is centered on the student and the student’s motivation. C. Learning is a process of building on what the student already knows. D. Learning is the ...
77. ### Trig

Find the exact value of: cos315. I have to use the sum angle formula cos(270+45) cos270 cos45 - sin270 sin45 thats all I have. Is the answer at least sqrt 2/2?
78. ### trig

I do not understand for my life how to solve this problem. Evaluate the expression without the aid of a calculator. arccos[(-3^1/2)/2) I'm not sure how my teacher did it. I know she said to find which quadrant that cos can be in and graph the triangle to find the angle.
79. ### Trig

How do you express sin4x as a trigonometric funcition of x using the identities? I think that you are supposed to start with the sine sum identity and then use the double angle identities for sin2A and cos2A, but after that I get stuck...
80. ### trig

An automobile windshield washer 10inches long rotates an angle of 60degrres. If the rubber part of the blade only covers the last 9inches of the wiped, find the area of the windshield cleaned by the wiper.
81. ### trig/sig figs

There are 60" in 1', 60' in 1°, and 2π radians in 360°. Convert arc-seconds into radians. KEep 6 significant figures. If someone could help and walk me through this process, it would be soooo appreciated!
82. ### trig

A frisbee is thrown within an angular velocity of 360 rpm. If the diameter of the frisbee is 12 inches, how fast does it travel when it hits the ground rolling on the side? round your answer to the nearest mph
83. ### Geometry (trig part)

How far apart would the top of the drawbridge be when both sides are open, if the angle of elevation of the drawbridge was 20°, to the nearest hundredth? (Extra info: distance inbetween is labeled "x")
84. ### Early Child Ed.

Can you please check these to make sure my answers are correct? 1. An educator who uses stereotype-free learning materials qnd activities that allow both boys and girls to participate in the same physical play is promoting: 1. insensitivity to cultural differences 2. a biased ...
85. ### Trig

Find all values of theta in the interval 0 <= theta < 360 that satisfy the equation 3cos(2theta)=7cos(theta). Express answers to the nearest ten minutes.
86. ### trig

The cross section of a television antenna dish is a parabola. A dish has a receiver that is located at the focus, 4 ft. above the vertex. Find the equation. (which I did) -- x^2 = 8y If the dish is 8 feet wide, how deep is it?
87. ### Trig

While fishing on a lake, the fisherman looks up at a cliff. His boat is 23 ft from the base of the cliff, and the angle of elevation is 40 degrees. Find the height of the cliff to the nearest tenth of a foot.
88. ### chemistry

Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3. Hydronium = [H3O+] = 10-pH or [H3O+] = antilog (- pH) and I got 1.00 x 10^7.3 for both concentrations is this correct? ABsolutely silly. You did not do the math. PUt this...
89. ### Math

Suppose that the function represents the percentage of inbound e-mail in the U.S. that is considered spam, where x is the number of years after 2002. Use this model to approximate the percentage of spam in the year 2006 to the nearest tenth of a percent. Please show work.. ...
90. ### U.S.History

Many immigrants who came to the United States expected to find streets paved with gold and easy opportunities to make their fortunes. can someone please give me a brief description of what they were more likely to find..and i will work on my essay from that description thanks ...
91. ### Algebra 2 URGENT

Solve the problem. Round answer to the nearest hundredth. Please Show All Work! Suppose a pool has dimensions 12 ft. by 30 ft. A sidewalk of uniform width around the pool has an area of 200 square feet. What is the width of the walkway?
92. ### General Chemistry

The work done when a gas is compressed in a cylinder like that shown in Figure 6.5 is 351 J. During this process, there is a heat transfer of 269 J from the gas to the surroundings. Calculate the energy change for this process. Not sure how to do this please explain with ...
93. ### trigonometry

Using exact values,find the value of: (A=30degrees) sin 2A + tan 3A/2 - cos A + sec(A+15), when A= 30degrees There were no parentheses and no exponents. please help by showing the work in details. Thank you! I pluged in the numbers and got this I don't know if its right or ...
94. ### Math

Hi I wanted some help with this question, I don't want the answer though as I want to try to see where my workings are going wrong. 3 x 34 / 9 - 2 (10 - 6) - 4 / 2 A -13 B 5 C 6 D -14 But I'm getting -3. Here's how I work through the equation using PEMDAS as a guide to order: ...
95. ### Physics

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 2.75 m above the level of the saddle. Please Show work!! I am completely lost!
96. ### Physics

A concave mirror is constructed so that a man at a distance of 19 cm from the mirror sees his image magnified 2.0 times. What is the radius of the curvature? OK so I have tried to work this out and can't seem to find the answer. Here is what I got. Please let me know if you ...
97. ### Chemisty

A student following the procedure described in this experiment collected the following data: Mass Mg,g 0.0243 volume of gas mL 25.5 barometric pressure, mm Hg 298 Calculate the value of the gas law constant, R. Please help me work this out, I have no idea. Thank you!
98. ### Algebra II

Find (f+g)(x),(f-g)(x),(f*g)(x), and (f/g)(x) for each f(x) and g(x) Now we were working well on this until we got to this f(x) and g(x). This was something our teacher didn't bring up. f(x) = 8x^2 g(x) = 1/x^2 How would you go about solving the problem with the fraction as g(...
99. ### Literature

PART A: What is Asimov's main idea in this essay? (Science an the sense of wonder) A- space is best appreciated through poetry B- poetry and science can work together****** C- the universe is more than beauty D- scientific knowledge is always advancing Help please!
100. ### Prisms and Surface Area

Use the formula S=2(lw)+2(lh)+2(wh) to find the surface area of of a rectangular prism with the following dimensions: length=2cm width=3 cm height=4cm To be continued, please help, answer this question from my work book, I have some more to.