90,377 results, page 20

1. english

can you please check if this sentence is grammatically correct? "This is rather interesting."

p/3-3p/8=3 p-3p/8=9 p-3p=72 -316 I am not sure if I did this right. Just guessing.

Divide 5x^4 - 3x^2 + 8x + 6 by x^2 + 8 My answer was 5x^2 - 43 with a remainder of 8x - 338. Is this correct?

Find the real solutions by factoring. 7x^3 = 2x^2 x^2(x+7) = x(x+2) x=0 x=-7 x=-2 Is this correct?

1) Differentiate the following: a) y=(x^3+5x)^6 (x^2+1)^7 (6(x^3+5x^)^5 * 3x^2+5) + (7(x^2+1)^6 *2x) * (x^3+5x)^6 b) y=(x+1)^2 / x^2 (2(x+1)*1) * (x^2) - 2x *(x+1)^2 all over (x^2)^2 Are these correct?

What is the oxidation number of chromium in K2Cr2O7 so k=+1 (2) = 2 O=-2(7) = -14 2x + 1 +(-14) = 0 2x-12=0 x=6 so Cr is 6 Is this correct?? Thank you!!
7. algebra

Solve the equation check for extraneous solutions 9[9-8x]=2x+3 please explain
8. Math

Write the answer in simplest form: 1. 1/3-2/9=1/9; 2. 3/5-1/10=1/2; 3.1/2-1/8=3/8; 4. 2/3-1/6=1/2; 5. 7/12-1/3=1/4; 6. 4/5-2/10=3/5; 7. 7/15-2/5=1/15; 8. 3/4-3/16=9/16; 9. 5/8-1/2=1/8; 10. 1/2-1/5=3/10 please check my answers... Thanks

10. english

Ms sue please check and correct whst I have wriiten
11. Decimals

What is 0.4536 in expanded form? Please check: 0.4 + 0.05 + 0.003 + 0.0006
12. Algebra Emergency!!

Find the inverse of f(x)=2x+1/x-1 and please VERIFY(CHECK) Thanks so much

1. x^16/x^3 x^16/3 x^48 x^19 x^13** 2. 4^4 • 4^6 4^2 4^6** 4^10 4^24 3. 4^4 • 4^44 4^176 4^48 4^40** 4^28 4. 3^4/3^4 Write the value of the expression. 3 0 1 4** 5. 3^3/3^6 1/27** 1/9 9 -27
14. Math

Given the function rule f(x) = x2 - 5x + 1, what is the output of f(-3)? A. 7 B. -5 C. 25 D. 5 I think its 7, can you check please? Thanks!

16. to writeacher

I think it is C,please check civics on the thread down below.
17. Math 222

Please check this to see if I am doing it correctly. g^2-6g-55/ g g=0 Because you can not divide by zero
18. Math

Please check my answer. 11 1/9% of what number is 600? I have 5400.54
19. 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
20. math

This is a greater than less than equal to problem, please check if this correct. _ 8/9 = .8

22. English

Is Mercutio a foil to the Nurse? I think they are not, but can you please check my answer? Thanks
23. LOGARITHM

Ln(2x-1)^2=7 solve for x. Please check my answer!!! =17.0577259793 Is this number too big?

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

Which of the following is true? a. Conserved forces cannot do work b. Work can be performed on an object without moving it c. If the work is done by a conserved force, you do not need to know the path the object took d. To know the total work performed on an object you must ...

I asked "Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object needs to be at twice the focal length from the mirror." and you answered: "1/o + 1/o=1/f 1/2f + 1/i=1/f 1/i=1/2f i=2f M=di/do= 2f/2f= 1 check my thinking...

Which of the following does not reduce water pollution? a) cleaning up oil and gasoline spills. b) reducing pollutants such as pesticides and fertilizers. c) increasing the use of gasoline.*** d) properly treating waste water Can you please check my answer?
28. algebra2

1/3 - 5/6 = 1/X SOLVE 1/3 - 5/6 = 1/X Let's remove the denominators by multiplying by 12X 12X*(1/3) - 12X*(5/6) = 12X*(1/X) Clear the fractions. 4X - 10X = 12 -6X=12 multipy by -1 6X=-12 Divide both sides by 6 6X/6 = -12/6 X = -2 Check my work.

The pressure and volume of a gas are changed along a path ABCA in the figure. The vertical divisions on the graph represent 4.0 x 10^5 Pa, and the horizontal divisions represent 4.5 x 10^-3 m3. The diagram is a upright rectangle divided into small squares (8 up and 6 across). ...
30. Decartes Rule

Can you please check my work? Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So...

this is my second time writing a check, and I know how, but How do i write $1,464.00 in words on a check. Is it "one thousand four hundred sixty four dollars" Is it hundred or hundreds? Do I need to say something about the zero cents? 32. Chemistry, please help!!! I have to go to work this weekend so I'm trying to get my homework finished. Could you please help me figure out this question? Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH)3) ... 33. Chem Home Work Help! I am a bit confuse with a question from a home work that I need to do by today please help! HW question... 1) A sample of neon gas occupies 8.77 L at 20°C. What is the pressure, in atmospheres, exerted by 1.45 mol of this gas? When you've gotten the answer to this question ... 34. Chemistry The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 8.50 g of naphthalene (C10H8) in 425 g of benzene (Kf of benzene = 4.90°C/m)? I worked this problem for someone just a couple of days ago. delta T = kf m kf = 4.90 m = molality = mols/kg. ... 35. Calculus derivative Find the slope and an equation of the tangent line to the graph of the function f at the specified point. f(x)=-1/3x^2+5x+5: (-1, -1/3) Answer: f’(x)=-2/3x + 5 y=-2/3x -1 I re-worked the problem and got f'(x)=5, y=5x+ 14/3 This is from a multiple choice test and this is not ... 36. English Grammar: Verbs What are the verbs in these sentences? I just want to check my work. Gasping, Matty called for his gift to come. There was no sense of how to direct it. He became aware, suddenly, that he had been chosen for this. Thanks in advance! 37. Physics (Trig Bit) A boy and a girl carry a 12.0 kg bucket of water by holding the ends of a rope with the bucket attached at the middle. FI tehre is an angle of 100.0 degrees between the two segments of the rope, what is the tension in each part? I do not understand the work Fw = mg = (12.0 kg... 38. Physics Hi! Would one of you please check my work? Thanks! ( I used significant digits, by the way) A student throws a 5.00 kg steel shot directly upwards so that it leaves his hand when it is 2.00 m above the ground. If its velocity is 0.15 m/s when it leaves his hand, calculate: 1.... 39. time n work a and b together can do a piece of work in16 days.b and c can do same work in 32 days.after a worked for 4 days and b for 12 days c takes it up and finishes it in 48 days.in how many days will each of them complete work 40. English Posted by rfvv on Wednesday, October 27, 2010 at 8:52am. 1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do any volunteer work? 5... 41. physics- energy and work To push a 33.0-kg crate up a frictionless incline angled at 27.0° to the horizontal, a worker exerts a force of 388 N parallel to the incline. The crate moves a distance of 4.10 m. What work is done on the crate by the worker? What work is done on the crate by the weight of ... 42. Science ~CHECK MY WORK PLEASE~ A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas Which is most likely to... 43. algebra - check my answer? A square field has an area of 479² ft What is the approximate length of a side of the field? Give your answer to the nearest foot. Explain A = 479 sq ft 479 = x^2 square root of 479 = square root of x^2 21.89... = x Rounded = 22 ft Is my answer okay? Please check 44. Algebra Can you please help me with these Algebra word problems? Complete the following word problems. 1. Tell whether the table represents inverse variation. If so, write the inverse variation equation and solve for y when x = 4. Show work that supports your conclusions. Table: ... 45. rounding numbers I need to to round 423,607,492 to the ten thousands. I then need to round it to the million. Can someone help me. I will be happy to check your work. Which numeral is in the ten-thousand place in this number? Which numeral is in the million place? Once you have those ... 46. Spanish Can someone please check my work? I was in Grade One. We went to the pumpkin patch. I got a really big pumpkin. I tripped while carrying it. I bit into the pumpkin. And lost one of my front teeth. Fui en primer curso. Fuimos al terreno de calabaza. Obtuve una calabaza grande. ... 47. trig What is the domain, range, and period of y= sin x + 1 What is the domain, range, and period of y= -cos x Can someone please help? 48. math How to solve for delta using trig functions? i.e. cosine sine tangent secant Thank you I'm not sure what delta you're referring to. Could you please elaborate some for us. What is it you're trying to do with the trig funtions? the problem is.. limit sec theda - 1/ theda sec ... 49. Trig Please help. I can't get this problem at all. When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing through the centers of the bubble. Also, angles ACB and ACD are 60 degrees. Show that the radius r of the ... 50. Algebra-drwls please check! Posted by Megan on Tuesday, October 12, 2010 at 3:44pm. I have a question if someone could help, please explain it. Given b = -1 and h = -1, what is the equation of the graph if the parent function is y = sqrt (x) Answers: a.y = sqrt(x-1) b.y = sqrt (-x+1) c.y = - sqrt (-x-1) ... 51. Spanish-Please check my answers Please check if I answered these correctly-Thank you I forgot to put accent on "i" in Si and I use spanishtypeit not manually on the keyboard-Please excuse lack of accent ¿Tienes hambre? Si, tengo hambre. ¿Tienes sed? Si, tengo sed. ¿La manzana es una carne? No, la manzana ... 52. English Please check my work. Identify whether each sentence is complex, an exclamation, declarative, or interrogative. 1. Tim likes soup, so Mary bought tomatoes. Complex 2. Oh no! Exclamation 3. Do you want to play in the Garden? Interrogative 4. In the story, the author told how ... 53. English Please check my work. Identify whether each sentence is complex, an exclamation, declarative, or interrogative. 1. Tim likes soup, so Mary bought tomatoes. ----- Complex 2. Oh no! ----- Exclamation 3. Do you want to play in the Garden? ----- Interrogative 4. In the story, the ... 54. college algebra--need help please!! information is given about a polynomial f(x)whose coefficients are real numbers. Find the remaining zeros of f. degree:5, zeros: -6, 6-i please help and show all work. 55. college algebra--need help please!! information is given about a polynomial f(x)whose coefficients are real numbers. Find the remaining zeros of f. degree:5, zeros: -6, 6-i please help and show all work. 56. college algebra--need help please!! information is given about a polynomial f(x)whose coefficients are real numbers. Find the remaining zeros of f. degree:5, zeros: -6, 6-i please help and show all work. 57. Algebra2 Help please Find the values of the 30th and 90th percentiles of the data. Please show your work. 129, 113, 200, 100, 105, 132, 100, 176, 146, 152 58. chemistry Can someone help me to check my answer and the way I solve this problem is right or wrong? Determine the energy required to turn a Na metal atom into a gas phase ion (Na+ (g)). Ionization energy of Na(g) 499 kJ/mol Electron affinity of O(g)for2e- 603 kJ/mol Energy to vaporize ... 59. Social Studies (please please please help) I have a portfolio assignment to do for SS and I'm just freaking out because I'm 3 units behind and I can't catch up until I complete this but I just don't understand it at all and I'm too prideful to ask the teacher for help. So, I beg, please help me? How did immigration ... 60. Direct objects 2 Check please Please check this is the last set of 5 questions thanks :D 6.A 7.C 8.B 9.B 10.D 6.Which word in the sentence is the direct object? Then we picked the ripe peaches from the sagging branches. A.peaches B.ripe C.branches D.sagging 7.Which word in the sentence is the direct object... 61. Calculus (check my work) The measurement of the circumference of a circle is found to be 64 centimeters, with a possible error of 0.9 centimeter. Approximate the percent error in computing the area of the circle. MY ANSWER 8.83% 62. Math Answer Check csc^2 x = 5 over the interval 0 <= x < 2pi 1. 26.57 degs 2. 153.43 degs I think the solutions in the third and fourth quadrants don't work because they don't fall in the interval. 63. CHemistry....Please double check DrBobb What mass of ethylene glycol C2H6O2, the main component of antifreeze, must be added to 10.0 L water to produce a solution for use in a car's radiator that freezes at -23C? Assume density for water is exactly 1g/mL. First we find out the freezing point: =(-23.0)-(0.0_ =-23.0 ... 64. Math Forty-eight decrease by a number is the same as the difference of four times the number and seven. Find the number. Please help me and show your work please and thank you 65. science( Please Check My Answer) Question: One of the largest cypress trees in Florida has a tree trunk diameter of about 3.5 m. What is the source of MOST of the carbon in the cypress tree's trunk? Answer choices: A. The tree created carbon during photosynthesis. B. The tree used carbon that it had stored in... 66. Math - Solving Trig Equations What am I doing wrong? Equation: sin2x = 2cos2x Answers: 90 and 270 .... My Work: 2sin(x)cos(x) = 2cos(2x) sin(x) cos(x) = cos(2x) sin(x) cos(x) = 2cos^2(x) - 1 cos(x) (+/-)\sqrt{1 - cos^2(x)} = 2cos^2(x) - 1 cos^2(x)(1 - cos^2(x)) = 4cos^4(x) - 4cos^2(x) + 1 5cos^4(x) - 5cos^... 67. Algerbra how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will do the left side.. 21x + 29= Now, subtract sixteen x from both sides, and subtract 28 from both sides. I will be happy to check your work. 7(3x+4)=8(2x+5)+13 21x + 29 is 7 times 4 28? 21x+ 28= 16x+40+13 21x+28... 68. math 106 In this question we will check if a discount is actually a discount. Say you are to borrow$100 for a year at a simple interest rate of 10%. Determine the discount D and the proceeds P for this loan. Next take another look at the situation. You take away P dollars and at the ...

At rest, a car’s horn sound at the note A(440Hz) The horn is sounded while the car is moving down the street. A bicyclist moving the same direction with one third the car’s speed hears a frequency of 415 Hz. What is the speed of the car? Is the cyclist adead of or behind ...
70. trigonometry (please double check this)

Solve the following trig equations. give all the positive values of the angle between 0 degrees and 360 degrees that will satisfy each. give any approximate value to the nearest minute only. 1. sin2ƒÆ = (sqrt 3)/2 2. sin^2ƒÆ = cos^2ƒÆ + 1/2 3. sin 2x - cosx = 0 4. cos 4x...
71. Chemistry

Does anyone know where I can get an image of the valence bond model for maleic acid? ie. showing the pi and sigma bonds and indicating the hybridization (sp2, sp3.. ) OR could someone describe these things to me? I'm just trying to check my work and make sure I didn't miss ...
72. English

Where did you volunteer? 1. I volunteered at the Nakdong River. I picked up trash on the seashore with other volunteers. I collected plastic bottles and other things from the river. The river has become cleaner with our work. 2. I volunteered at a city hall. I helped their ...
73. Math

Use the circle graph to determine how many hours per day Becky spends on each activity. School=25% Eating=10% Sleep=40% Homework=10% Freetime=15% I think my answer would be 25/100=x/1 4 hours Can you please check my answer,Please help me I am a little lost.
74. Anthropology

I need some serious Assisting. PLEASE!!!!I am doing a project on gender and gender roles including identities and the equality and inequality. The Culture is Native American. I need help a.s.a.p. This is my last week in this class. Please, please help me. Thank you so much. I ...
75. math

tom takes 3days to do a piece of work while jerry takes only one day for the same. together, they both can finish the job in 15 days. in how many days tom will finish the work? solution please

Please see if I Have the right answer thank you for your help . You are asked to change plural medical words to the singular form. Which of the following combinations represents the correct conversion ? A. Criterion, criteria B. Bacteria,bacterium C. Lumen, lumina D. Ganglion...
77. Algebra

I got a couple I want to check my work : Both are Solve using the quadratic formula : 1) x^2-3x=7x-2 x^2-3x-7x+2=7x-7x-2+2 x^2-10x+2=0 x = 10 +- sqrt10^2 - 4(1)(2) / 2(1) x = 10 +- sqrt100 - 8 / 2 x = 10 +- sqrt92 / 2 x = 10 +- 2sqrt23 /2 x = 5 +- sqrt23 x = 5 + sqrt23 and x...

I think I have the right answer, but I am not 100% sure how to do the values at (1,-1) and the one below at (0,-1, 1). Please explain how I need to approach how to do these. Thank You! Calculate the partial derivative @f/@x, @f/@y and @f/@x | (1,-1), and @f/@y | (1,-1) f(x,y...
79. PHYSICS HELP

I am having a real problem with this question. Through the process of doing work, energy can move between the external world and the system as the result of forces or work. I say it's forces, but someone else says it's work because only work and energy can be inerchanged. Who ...
80. Algebra

1. (12g^4)^-1 (work check) 12g^-4 = 1/(12g^4) 2. (2y^4)^-3 (need help)

Before the Civil War most cattle were not (1 point) on the open range. on South Texas ranches.* slaughtered for their hides. shipped to cities in the northeast. 6. After the Civil War, (1 point) many plantations were divided into smaller farms.* plantations increased in size. ...
82. Dr. Bob

Dr. Bob, can you please tell me if I did my chem questions right... they have been sitting down there all day and all i need is someone to check if they are right please and thank you
83. English

1. I want to do volunteer work at the Han River. I want to pick up trash and make it clean/clear. 2. I want to volunteer at the Han River. I want to pick up trash from the river, and make it clean/clear. (Would you check the English expressions? Correct errors, please. Do I ...
84. math

Can someone help me please? I have 4 equations that need to be matched up to different graphs. I need to know how to work the equations so I can match them to the graphs. 6y>15-3x 5x-3<15 3x>=2y -x y+x<=-3 If you can show me how to work htese i can then match them ...
85. Linear algebra

Show that the origin is the only equilibrium point of the system? X=ax+by Y=cx+dy Wherea,b,c and d are constants, with ad-bc not aqual to 0(zero) Please show me how to do this problem Please show me the work

PlEASE HELP ME!!! I WOULD GREATLY APPRECIATE IT!!!! Find the least upper bound (if it exists) and the greatest lower bound (if it exists) for the given set. Please show all work. (0, 2) (−∞, 1) {x : x2 < 4} {x : x4 ≤ 16} {5/2,7/3,9/4} {0. 9, 0. 99, 0. 999...

Mali-li has 6 1/3 yd of material. Her new skirt will take 2 1/3 yd. How much material will she have left after the skirt is made? My answer:4 Am I wrong? If I am, can you explain it to me please? Thank you in advance.
88. History

Can someone check my answers please? (They are at the bottom) 1. Nearly every village in Mecico has a church and a market. The city's public square where the market is held is called a A. Quatro B. Plaza C. Casa D. Squatter 2. To what country does Mexico export the most goods...
89. trig 30

If cos^2 theta -6 sin 2 theta =0, one value of theta is a)0 degrees b) 90 degrees c)180 degrees or D)255 degrees. Please show me how to do it and not just give answer cause I have two more questions that are similar. Thanks so much.
90. Reiny or Steve could you check my Math?

1. (9m+6)+(-5m-6) my answer: 4m 2. (3r^2+7r+1)+(4r^2-8r-2) my answer: 7r^2-r-1 3. (6h-1)-(9h+4) my answer: -3h-3 4. (m^2-m-4)+(m-5) my answer: m^2-9 5. (4x+4)+(3x+2+1) my answer: 7x+7 Now this was book work for me so it doesn't have multiple choice, so are my answers correct?
91. Literacy 4

Please check my work. Thank you. 1. Government documents in a library are classified according to which of the following schemes? A. Superintendent of Documents B. Government Printing Office C. Dewe Decimal D. Library Of Congress Answer #1 is A 2. You're using the nonfiction ...
92. Physics

I have been working on this problem all day and i just cant get the answer. Please help I would really appretiate it. The position of a 230 g object is given (in meters) by x = 4.9t^3 - 8.0t^2 - 44t, where t is in seconds. 1. Determine the net rate of work done on this object ...
93. Pre-Alg

(Check my work?) 1.) Use arrow notation to write a rule that describes the translation of a point from (5,6) to (6,11) A.(x,y) -> (x + 1, y + 5) B.(x,y) -> (x - 1, y - 5) C.(x,y) -> (x - 1, y + 5) D.(X,y) -> (x + 1, y - 5) 2.) Point A(6,-2) is reflected over the x-...
94. literature

Can you please revise this for me? Tears: Easily coming, easily going. Effortless work for salty streams flowing. Might come when you're here, might come when you go. But tears are definitely good work's foe ---Does the last line make sense?--- thanks
95. Fine Art

I have to examine the art work "Winged Genie Fertilizing a Date Tree" and explain the elements of art found in the art work and explain what type of movement is shown in this work. I'm really struggling with this and behind on my work. Any help anyone could give me would be ...
96. Health

Writeacher, could you please check if everything is OK? Thank you very much. 1) My classmates always keep me from work (from the lesson??). I was on the phone with the bank when we were cut off. 2) I was so cross with my boss that I hung up on him.Peter had his house done up ...