# 1)Find the sixth term of the geometric sequence for which a1=5 and r=3 A)1215 B)3645 C)9375 D)23 I chose A 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3... A)aN=-12(1/3)n-1 B)aN=12(-1/3)n-1 C)aN=-12(-1/3)-n+1 D)aN=-12(-1/3)n-1 I chose C 3)Find

92,916 questions, page 489

[Note: i need help really badly. I only have 2 hours left] Find all solutions of the following equations. Be sure to check for extraneous solutions. show work 1). 3cosθtan^(2)θ-cosθ=0 2). tan (3θ)+1=0

asked by Amber on July 12, 2016
2. ## science physics

A giant crane in Washington DC was tested by lifting a 2.232x10^6 kg load. Find the magnitude of the force needed to lift the load with a net acceleration of 0m/s^2

asked by Melina on December 8, 2010
3. ## physics

Three forces of magnitude 15N, 10N and 5N act on a particle in the direction which make 120° with one another. Find the resultant and the angle the resultant makes with the x-axis?

asked by brain Mac on July 7, 2019
4. ## Algebra

14. (a) Use a graphing utility to find the exponential regression function for the follow data: {(23.5, 16), (26.7, 48), (28.0, 155), (29.5, 571), (29.9, 896)} (b) Use the function in (a) to predict (to the nearest whole number) the y-value associated with

asked by Jessica on August 1, 2010
5. ## cal 1

Find the dimensions of the rectangle of largest area that has its base on the x-axis and its other two vertices above the x-axis and lying on the parabola. (Round your answers to the nearest hundredth.) y = 7 - x^2

asked by Jordan on December 8, 2010
6. ## Chemistry

An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 2.77 , and the density of the crystal is 8.65 . Find the atomic weight of the element.

asked by John on January 17, 2013
7. ## Physical Science

The radius of a certain planet is 6.04x10^7 meters, and its mass is 5.19x10^26 kg. Find the density of this planet. (The volume of a sphere is given by (4/3)(pie)(r^3). Answer in units of grams/cm^3

asked by Christina on February 3, 2008
8. ## Chemistry

The heat of combustion of liquid hexane (C6H14) to carbon dioxide and liquid water at 298 K is -4215 kJmol−1 . Find ΔrU of the reaction.

asked by someone on February 10, 2017
9. ## ststistics

A sample of 3000 observations has a mean of 86 and a standard deviation of 13. The distribution is bell-shaped. Using the empirical rule, find what percentage of the observations fall in the intervals

asked by myself on September 18, 2013
10. ## math

A seismograph 300km from the epicenter of an earthquake recorded a maximum amplitude of 5.8*10^2lrm, find this earthquake's magnitude on the RicHTER scale to the nearest tenth.

asked by sue on March 12, 2012

Three charges, q1=+45.9nC q2=+45.9nC and q3=+91.8nC are fixed at the corners of an equilateral triangle with a side length of 3.70cm. Find the magnitude of the electric force on q3.

asked by Ann on October 19, 2012
12. ## calculus

2. Sketch the region in the first quadrant that is bounded by the graphs of y=x^3, y=4X , and 2x+y-3=0 that lies below both straight lines. Find the area of this region. I can see the graph in front of me. which function do I subtract from which?

asked by Taeyeon on March 11, 2012

$100 is deposited at the beginning of every week for five years in an account that pays 14%/a, compounded weekly. a. What type of annuity is this? b. Find the future value of the annuity using the formula. asked by A on July 29, 2019 14. ## maths... Differentiate ln [x+√(x^2+1)] with respect to x hence evaluate limit 0 to 1 ∫ 1/√(x^2+1) dx _________________________________________ Use the identity cos3x=4cos^3x-3cosx, find ∫cos^3x dx * Is there a printing error in the question? the limit is asked by Aoi on June 19, 2009 15. ## English Discuss any areas related to citing sources that you find confusing or difficult understand or apply. In your responses to others offer suggestions to help understand the issue. asked by Jasmine on May 18, 2011 16. ## Math Here is the question: Find the exact value of the following expression: 6*22*5. Use any mental calculation technique you choose. Name the technique. Here is what my answer looks like: 6*22*5 (6*5)*2*11 (30*2)*11 60*11=660 I multiplied by simple numbers. Is asked by B.B. on June 10, 2009 17. ## calculus (derivativs) Find the points on the graph of f where the tangent line is horizontal. original: x/x^2+25) After I did the quotient rule I got: (x^2+25)(1)-(x)(2x)/((x^2+25))^2 Then of course I know you set that equal to 0, but I do not know how to set it up or asked by Eve on September 17, 2013 18. ## physics The pitcher throws a pitch from the mound toward home plate 18.4m away. The ball is released horizontally from a height of 1.8m with a velocity of 32m/s. Find the height above ground when it gets there. asked by charlee on February 22, 2017 19. ## physics A warehouse worker pushes a crate along the floor, as shown in the figure below, with a force of F = 10.5 N that points at an angle of θ = 61°. Find the horizontal and vertical components of the force. asked by Anonymous on October 18, 2017 20. ## calculus Is it possible to find an example of a bounded region in the x, y plane that satisfies the following condition : when you revolve the region about the x axis you obtain a solid that has a volume equals its surface area asked by Sara on April 15, 2011 21. ## Physics a mass of 100kg moves in a circular path of radius of 5cm with uniform speed of 20m/s.find the centripetal acceleration and centripetal force. asked by Emmanuel Chinda on July 9, 2018 22. ## maths a man sold an article at a profit of 25%. if he had bought it at 10% less and sold for 10RS more, the gain would have been 40%. find its cost price a.800 c.960 c.1000 d.1080 e.none asked by avinash on August 27, 2011 23. ## geometry How do you find the lateral area and surface area of a right prism whose height is 10 ft and whose base is a rombus with diagonals 12 ft and 12sq root of 3 ( DON'T KNOW HOW TO PUT SQROOT 3 IN) asked by JOY on May 21, 2011 24. ## math The volume V of a gas varies inversely as pressure P is exerted. If V = 4 liters when P = 3.5 atmospheres, find V when P = 2.5 atmospheres. Note: Round your answer to the nearest thousandth. asked by Anonymous on October 8, 2012 25. ## physics find the power by a man if he runs at constant speed of 5km/h along an ascending road which makes 5 degree with the horizontal if the mass of yhe man is 60 kg. asked by ram on October 8, 2012 26. ## Science The time interval between a lightning flash and the first sound of thunder was found to be 5 second.If the speed of sound in air is 330 ms-1,find the distance of the hash from the observer asked by Chitra on January 26, 2017 27. ## Calculus AB Let R be the region bounded by the graphs of y=sin(pi x) and y=(x^3)-4x, as shown in the figure above. (a) Find the area of R. (b) The horizontal line y=-2, x=2, x=-1. Write, but do not evaluate, an integral expression for the area. asked by Jaime on March 11, 2011 28. ## science physics A giant crane in Washington DC was tested by lifting a 2.232x10^6 kg load. Find the magnitude of the force needed to lift the load with a net acceleration of 0m/s^2 asked by Melina on December 8, 2010 29. ## English What is the tone of Guy de Maupassant's short story, "The Necklace?" I cannot find out whether or not this tone is reproving and mocking or realistic and ironic. If anyone could help that would be great as I am completely stuck on this. asked by Mame on June 1, 2016 30. ## MATH The volume V of a gas varies inversely as pressure P is exerted. If V = 4 liters when P = 3 atmospheres, find V when P = 7 atmospheres. Note: Round your answer to the nearest hundredth asked by NICKY on October 12, 2010 31. ## Algebra 1 2.Find the slope of a line that passes through (–2, –3) and (1, 1). The fraction one third. 1 2 The fraction four thirds. 3. For the equation –4y = 8x, what is the constant of variation? (1 point) –4 –2 1 2 4.Suppose y varies directly with x, and asked by Mia on November 15, 2014 32. ## simple interest find the simple interest. Assume a 360-day year and a 30-day month. 18000 at 5%; loan made on September 12 and due November 27. asked by Anonymous on October 3, 2011 33. ## physics find by calculation,the resultant two equal forces of 6N each acting at a 4N point at an angle of (a) 60 degree (b)120 degree with each other{hint cos120= -cos60 =1 and half or 1/2 asked by victory on October 23, 2014 34. ## Math The radius of the larger circle is 9cm. The diameter of the smaller circle is 11cm. Find the area of the shaded region. I don't understand this questions at all please help. asked by Serena on January 27, 2017 35. ## Chemistry find the pH of each of the following solutions of mixtures of acids: .125M in HBr and .130 M in HCHO2, .155M in HNO2 and 9.0*10^-2M in HNO3, 5.5×10−2 in acetic acid and 5.5×10−2 in hydrocyanic acid asked by Kristen on August 2, 2010 36. ## physics Find the required angular speed, ω, of an ultracentrifuge for the radial acceleration of a point 2.00cm from the axis to equal 6.00×105 g (where g is the acceleration due to gravity). asked by Anonymous on May 27, 2014 37. ## Microbes and Society A local newspaper once contained an article about “the famous bacterial genus ecoli.” How many errors can you find in this phrase? Rewrite the phrase with the mistakes corrected. asked by Ann on January 28, 2017 38. ## math a rectangular garden is to be fenced along four sides and in the middle it is to be divided into 2 equal areas.if 300meters of fencing materials is available, find the maximum possible area that can be fenced. asked by Anonymous on December 2, 2011 39. ## 6th Grade Math How do I know whether to round all the numbers first, THEN estimate, or to find my answer THEN round? I was doing a favor for my teacher, and I missed that part. She went pretty fast throught the lesson, so I forgot to ask her. Thank you! asked by Anonymous on October 17, 2010 40. ## Math Find the volume of a barber's pole having the shape of a right circular cylinder of radius 5 in. and height 29 in. topped by a sphere of the same radius. Round to the nearest tenth, if necessary. asked by Brandi on October 31, 2009 41. ## math Find the distance btw two cities. Assume that the Earth is is a sphere of the radius 4000 miles and that the cities are the on the same longitude(one city is due north of the other). asked by salma on October 5, 2015 42. ## Pre cal If Joe invested$7000 at x% and $13,000 at 3% more, find x if the income from both investments is$1190 I'm thinking that the equation would r something like 1,190=(13,000)(.03) but please correct me if I'm wrong. Thank you for your assistance.

asked by Alex on June 6, 2016
43. ## physics

Find the change in the gravitational force between two planets if the masses of both planets are doubled but the distance between them stays the same. Express your answer as an integer. I have no idea what exactly they are wanting here?? please help!

asked by jim on March 6, 2012
44. ## Chemistry

In a titration HCl and NaOH have a 1:1 ratio. Can you still use the formula M1V1 = M2V2 to find the molarity of the NaOH base if we change the acid to sulfuric H2SO4?

asked by Jimmy on March 4, 2010
45. ## calculus

Please answer. An airplane at an altitude of 3000m, flying horizontally at 300km/hr, passes directly over an observer. Find the rate at which it is approaching the observer when it is 5000m away.

asked by joecel on September 20, 2015

$100 is deposited at the beginning of every week for five years in an account that pays 14%/a, compounded weekly. a. What type of annuity is this? b. Find the future value of the annuity using the formula. asked by A on July 30, 2019 47. ## trig TA and TB are two cables helping to brace a 500 ft radio tower, FT. If the angles which the cables make with the horizontal are 62 and 50 (degrees), find the distance between their anchor points asked by Michael on May 10, 2010 48. ## mathematics what is the slantheight of the largest square pyramid that can be curved out from a wooden cube of side 12cm?find the lateral surface area of the pyramid so obtained? asked by asha on October 6, 2012 49. ## link modules hi im doing a project for my link modules, i got a topic about airports... i have found almost everything i needed for the report but i cannot find anywhere positive effects that airports bring locally, please if someone could help me with them, thanks a asked by Viola on October 10, 2010 50. ## physics how large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a horizontal distance of 80 m ? I'm trying to find the formula and then plug in the correct #'s into the formula. asked by courtland on February 11, 2010 51. ## Math 1. The random variables X and Y are distributed according to the joint PDF fX,Y(x,y) = {ax2,0,if 1≤x≤2 and 0≤y≤x,otherwise. Find the constant a. 2. Determine the marginal PDF fY(y) . (Your answer can be either numerical or an algebraic function of asked by Adam on July 3, 2019 52. ## physics A body is projected vertically upwards with a speed of 40 m/s.Find the distance travelled by body in last second of upward journey?(g=9.8m/s2 neglect effect of air resistance) asked by mona on May 30, 2014 53. ## math six friends go to the movies and share equally a 48-ounce bag of pop corn and three 48 inches licorice laces. find the fraction of popcorn and licorice each get asked by Anonymous on September 25, 2012 54. ## math for the given pair of events A and B complete parts (a) and (b) below : A. When a baby is born it is a boy B. When a 15 sided die is rolled the outcome is 11. Find P(A and B) the probability events A and B both occur asked by Shayla on June 12, 2015 55. ## Math The length of a rectangle is 15 m longer than 3 times the width. The perimeter of the rectangle is 74m .find the dimensions. answer in fractional form using mixed numbers asked by Brent on June 2, 2016 56. ## English Where do you search to find materials in a public library? A.Reader's Guide B.ERIC Database C.Online Public Access Catalog I pick C for my answer. asked by Tim on September 10, 2016 57. ## calculus Is it possible to find an example of a bounded region in the x, y plane that satisfies the following condition : when you revolve the region about the x axis you obtain a solid that has a volume equals its surface area asked by Sara on April 15, 2011 58. ## physics A car acclerates uniformly from to a rest to a speed 23.7 km/h in 6.5 s.Find the car travels during the time.(Displacement with constant uniform accleration).My only problem is the conversion asked by A person on September 13, 2012 59. ## pre-calculus A plane flies due west at 250 km/hour while the wind blows south at 70 km/hour. Find the planes resultant velocity and direction. asked by Zene on April 12, 2011 60. ## physics At each corner of an equilateral triangle, there is a charge, as diagrammed below. The length of each side of the triangle is .4 meters. Find the net force acting upon q1, given the following values for each of the charges: q1 = −2.00 μC, q2 = 3.00 μC, asked by Anonymous on February 26, 2017 61. ## Science - biology If you did not know whether brown or yellow alleles were dominant in corn, how could you tell with reasonable certainty? If you used a punette square to find out which one is dominant, how would you know which letters to use for each parent to figure out asked by Laura on July 14, 2010 62. ## algebra Please help me. Find the equation of the line satisfying the indicated properties. Express your answer in slope-intercept form. Passing through point (-2, 4) and perpendicular to the line containing points (3, -1) and (5, -1). asked by Vee on January 31, 2013 63. ## math A population of animals oscillates between a low of 1098 on January 1 (t = 0) and a high of 2344 on July 1 (t = 6). (a) Find a formula for the population, P, in terms of the time, t, in months. asked by emily on April 9, 2013 64. ## physics a body of mass 5kg initially at rest is subjected to a force of 20N. find the kinetic energy acquired by the body at the end of 10s. asked by prudhvi on January 16, 2013 65. ## math awhh man:( i just had one left. A store owner buys coats for 56$ each. she adds 30% to the cost and sells the coat s at 15% off. find the selling price of each coat. would i do 56 x 0.30 = 16.80 56.00 + 16.80 = 72.80 56.00 x 0.15 = 8.40 56.00 - 8.40 =

asked by jazz on November 1, 2008
66. ## Calculus

A closed box is to be a rectangular solid with a square base and volume of 12 ft^3. Find the most economical dimensions if the top of the box is twice as expensive as the sides and bottom.

asked by Candy on March 10, 2012
67. ## algebra

The diameter of a valve for the space shuttle must be within 0.001 mm of 5 mm. Write and solve an absolute-value equation to find the boundary values for the acceptable diameters of the valve.

asked by buttercup on August 29, 2016
68. ## math 1

The vertices J(2,6), K(7,8), L(9,3), and M(?, ?) determine a square. Show your work to find the coordinates of M. Use complete sentences and proper grammar to give a justification why JKLM is a square.

asked by krista on August 4, 2017
69. ## Geometry

2. Find the area of the triangle. Give the answer to the nearest tenth. The drawing may not be to scale. A.) 47.4cm2 B.) 94.8cm2 C.) 7.5cm2 D.) 303.1cm2 I think the answer is D but not for sure

asked by R.A.D on May 1, 2018
70. ## Physics

Joanne drives her car with a mass of 1000 {\rm kg} at a speed of 23m/s . Find a road friction force that is need to bring her car to a halt in 14s .

asked by Ericca on February 14, 2013
71. ## Math

Find the missing dimensions for each three-dimensional figure to the nearest tenth given the volume and other dimensions. I'm not understanding the cones too much. r=5in., v = 487in.3 How do I work it, given only the radius

asked by Nia on March 23, 2011
72. ## Algebra

James has saved $50. He wants to buy a DVD player for$149 in about 5 months. To find out how much he should save each week he wrote 50+20x=149. Explain his equation.

asked by Lauren on June 16, 2011
73. ## Algebra

James has saved $50. He wants to buy a DVD player for$149 in about 5 months. To find out how much he should save each week he wrote 50+20x=149. Explain his equation.

asked by Joe on June 16, 2011
74. ## math

A room measure 12fy by 15ft find the scale that would allow the room to be showed large as possible on a piece of paper 7in by 8in explain your reasoning

asked by Sammy on January 27, 2015
75. ## Calculus

Find the sum of all prime numbers between 1 and 100 that are simultaneously 1 greater than a multiple of 4 and 1 less than a multiple of 5. (a) 118 (b) 137 (c) 158 (d) 187 (e) 245 The answer is D right?

asked by Roger on November 9, 2007
76. ## Math

Ann is x years old and her sister is 2 years older. If the product of their ages 80. Form an equation in x and solve to find the age of each. ______________________________________ I got up to, x + 2x = 80 x + 2x - 80 = 0 and now im confused... this is for

asked by Luna on March 26, 2016
77. ## Science Biology

Help please reviewing for test and in my notes I have a comment. Animal cell oraganella are larger than plant cell organella is this correct - I have searched everything and cant find an answer.

asked by Liz on February 19, 2018
78. ## Archimedes principle

An iron piece of mass 360g and a density of 6g/cm^3 is suspended by a rope so that is partially (halfway)in oil of density 0.9 g/cm^3.Find the tension (force) in the string.

asked by Emmanuel on July 26, 2017

accounts cash book find journal entries for. (1) discounted bill of rs .1000 at1% by bank (2) interest allowed by bank rs.5000

asked by mrudula on November 22, 2010
80. ## trigonometry

Two pulleys have radii 20cm and 6cm,respectively. The smaller pulley rotates 15 times in 12 seconds. Find the angular speed of each pulley in rad/sec

asked by helpme on July 26, 2014
81. ## statistics

Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 344 with 96 successes at a confidence level of 98%.

asked by robyn on July 22, 2012
82. ## math

Suzan deposited $1,000 in a savings account at 3% compounded monthly. Find the number of months required if she wanted the amount in the account to become$1,498.54

asked by Lula on May 5, 2018
83. ## criminal law

choose a state and research the rules for admissibility of scientific evidence. Has it maintained Frye, adopted Daubert, or adapted its own rules? Discuss what you find.

asked by paula on May 27, 2010

Use implicit differentiation to find the points where the parabola defined by x^{2}-2xy+y^{2}-6x+2y+17 = 0 has horizontal and vertical tangent lines. List your answers as points in the form (a,b).

85. ## Physics

Two carts with masses of 4.3 kg and 3.9 kg move toward each other on a frictionless track with speeds of 5.6 m/s and 5.0 m/s, respec- tively. The carts stick together after colliding head-on. Find their final speed.

asked by Chris on January 26, 2015
86. ## Trigonometry

a line which passes through the origin contains point A (-0.714, 0.700) . find the gradient of the line and the angle formed with respect to the positive x-axis in Degrees

asked by D on March 30, 2016
87. ## Chemistry

For the strong acids find the [H3O]and [OH] in a solution that is .785% HNO3 by mass (assume a density of 1.01 g/ml). If someone could offer step by step instructions, that would be terrific!

asked by Beth on April 29, 2012
88. ## physics

a box having mass of 500kg is placed on a horizontal surface with 120cm lenght and 60cm width.find the pressure exerted on the surface?also write the formula.

asked by sweetie on November 24, 2010
89. ## Math

#1) A gold bracelet that sells for $320 is on sale for 40% off. One way to find the amount by which the regular price is reduced is to multiply$320 by a) 3/10 b) 2/5 c) 3/5 d) 5/8 #2) A triangle can have sides whose lengths are 9 cm, 16 cm, and a) 7 cm b)

asked by Divergent on July 22, 2014
90. ## Algebra 2

A Rectangular Field is to be enclosed by a fence and divided into three parts by another fencer. Find the maximum area that can be enclosed and separated i this way with 500 meters of fencing

asked by ali on February 3, 2011
91. ## Math

The scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to find the percentage of people taking the test who score between 363 and 541

asked by Scott on April 17, 2017
92. ## Algebra 2

A Rectangular Field is to be enclosed by a fence and divided into three parts by another fencer. Find the maximum area that can be enclosed and separated in this way with 500 meters of fencing.

asked by Zach on February 3, 2011
93. ## Algebra Readiness (Pre-Algebra) B

Find the surface area for a cylinder with a height of 20 and a radius of 6. Use 3.14 for pi and round to the nearest whole number. 180 ft 720 ft 433 ft 135 ft I thinks it is 720 ft.

asked by Kit-Kat on February 16, 2018
94. ## English

I have to debate on legal prostitution. My view point is against legalizating prostitution... Can you help me find clean sites/info? I need to have logical, emotional, and ethical appeals...

asked by Amber on January 15, 2010
95. ## Math

The price of a technology stock was $9.83 yesterday. Today, the price fell to$9.70 . Find the percentage decrease. Round your answer to the nearest tenth of a percent.

asked by Samantha on June 10, 2013
96. ## chem

find molar concentration of the solution. .128 g of benzophenone and fill in a beaker with ethanol to the 50.00mL line i came up with 3.5 x 10^-5 (0.128)(1/182.217)(.049872)

asked by john on February 1, 2009

find molar concentration of the solution. .128 g of benzophenone and fill in a beaker with ethanol to the 50.00mL line i came up with 3.5 x 10^-5 (0.128)(1/182.217)(.049872)

asked by john on February 1, 2009
98. ## physics numeral

A person rows his boat in stream with a speed of 2.0 m/s.Water in the stream is flowing perpendicular to the direction of flow,find graphically his resultant velocity.

asked by rahul on June 7, 2013
99. ## Physics 203 ( College)

Four particles, one at each of the four corners of a square with 2.5-m-long edges, are connected by mass less rods. The masses of the particles are m1 = m3 = 2.0 kg and m2 = m4 = 7.0 kg. Find the moment of inertia of the system about the z axis.

asked by Kayla on April 4, 2011
100. ## Chemistry

"Find the pH of the solution obtained when 32 mL of 0.087 M ethylamine is titrated to the equivalence point with 0.15 M HCl? Do I need to do a rice table for this problem? I'm having difficulty starting this problem... Thanks!

asked by Rachel on May 21, 2007