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

93,362 questions, page 380
1. Physics

The nucleus of the helium atom contains two protons that are separated by about 3.0 x 10-15 m. Find the magnitude of the electrostatic force that each proton exerts on the other

asked by Arnold Manguy on April 19, 2010
2. Calculus

Find the points of inflection of the curve below. Round the answers to three decimal places. (Hint: All three are in a straight line.) y= (1+x)/(1+x^2)

asked by Sasha on February 8, 2010
3. calculus

Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis. y = 4x − x2, y = 3; about x = 1

asked by maria on March 13, 2017
4. Physics

I have a rubber ball. Its diameter is 5.16 cm. Its density is 1.5 Mg/m^3. I need to find its weight in US units. I know to use w=pVg I am coming out with the wrong answer though. Can someone help?

asked by Morgan on January 26, 2011
5. Trig.

Can someone please help me with this? Find all solutions to the equation in the interval [0,2pi) cos2x=sinx I know I have to use some sort of identity, but I have no idea how to go about to solve this.

asked by mary on February 27, 2010
6. trig

Find the values of the six trigonometric functions of the angle in standard position with the terminal side passing through the point P(-4, 3).

asked by kp on November 28, 2010
7. stationary point

find the stationary point of the function z=4x^2+10xy+4y^2-x^2y^2 and also determine their nature plz show me step i don't know it

asked by samara on September 27, 2016
8. statistics

Suppose that contamination particle size in micrometers can be modeled as f(x) = 2x−3 for 1 < x. a. Show that f(x) is a probability density function. b. Find the mean X.

asked by latha on October 9, 2011
9. Maths

Arrange 9 square tiles having side of length 2 cm in 3 different ways . Find the perimeter of the resulting figure in each case

asked by Aanshi on March 14, 2018

where do u think the commas belong? in fact most students find it hard to sleep past 6:00A.M. during the semester,so you as well take 8:00 classes

asked by kamal on March 28, 2011
11. calculus

Using a double integral, find the volume of the solid that's bounded by the cylinder z=x^2 and below by the region enclosed by the parabola y=2-x^2 and the line y=x

asked by john on November 3, 2009
12. math

am i right here?: find the side length of a square with an area of 169 in squared a.338in b.106in c.26in***** d.13in

asked by ShannonPanda on March 14, 2018
13. algebra

A certain country's population P(t), in millions, t years after 1980 can be approximated by P(t) = 2.495(1.019)^t. Find the doubling time.

asked by inez on May 7, 2010
14. Statisitcs

Suppose that X and Y are independent discrete random variables and each assumes the values 0,1, and 2 with probability of 1/3 each. Find the frequency function of X+Y.

asked by Jade on October 30, 2010
15. College Pre-Algegra

1. Find the exact value of tan660 using the functions of 330deg. 2. Solve the equation 2sin^20+5sin0+3=0 on the interval 0

asked by clifford on June 12, 2011
16. Math

Find the mode of the set of data 59,61,54,51,38 46,56,52,63,40,44 1.B 2.D 3.C 4.A 5.D 6.C 7.B 8.C 9.C 10.C 11.B 12.D 13.B 14.A 15.A 16.A 17.D 18.A 19.C 20.D Math lesson:10 Unit:2 Practice test 100% answers

asked by May on September 27, 2017
17. Biomechanics

An athlete jumps straight upwards at 2.5 m/s, find: 1. a) total flight time 2. b) maximum jump height

asked by Matt on October 28, 2016
18. calculus 4

a solid cube, 2 units on a side, is bounded by the planes x=+-1, z=+-1, y=3 and y=5. Find the center of mass using triple integrals.

asked by john on November 3, 2009
19. physics

find the total momentum of electrons in a straight wire of lenght 1000m carrying a current of 70A.

asked by rana on July 9, 2010
20. Trignometry

Please Help!!! Given: A= 10km S30degreesW and B= 15km S40degreesW Find the resulting vector (magnitude and direction) of the combined vectors

asked by Alex on December 7, 2016
21. Texas History

What was the mission that served as a halfway mark between Mexico and the eastern settlements? I have no clue and cannot find it in my history book...

asked by Journi on December 8, 2009
22. HISTORY fAIR

CAN SOMEONE HELP FIND QUOTES FOR HISTORY FAIR IS DUE TUESDAY. MY THEME IS THE CHICAGO AUTOMOBILE SHOW. ANY HELP IS APPRECIATED.

asked by uoeihrfkwdihfhr3kohvred[hqr';elhgs.'hg]s on March 11, 2018
23. Calculus

Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. (Enter your answers as a comma-separated list.) f(x) = x^4, [0, 4]

asked by Anonymous on March 30, 2018

Where can I find information that will help me to compare and contrast the rights of employees and the responsibilities of the employers in the United States and Europe?

asked by Karmen on June 22, 2011
25. Math/Trig

Find the area of the sector, given a central angle of 55degrees and a radius of 5.7 in. Round your answer to the nearest tenth.

asked by CJ on January 16, 2011
26. science

Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.

asked by syed on December 7, 2011
27. UNP

Find the amount of heat required to convert 10g of ice to steam at 110 degree Celsius.

asked by Dangadang on March 16, 2011
28. Physics

Suppose a cube that measures 0.020 m on each side were made of water. Find its volume, mass, and weight.

asked by May on March 9, 2011
29. Math

A rectangle's width is x and its length is 2x-1. Its area is 21. Find its dimensions. my work so far: 21 = x(2x +1) 21 = 2x^2 + x I was wondering how I would continue to solces this problem.

asked by Caitlin on December 18, 2016
30. geometry

The rectangle ABCD is rotated about the side AB. Find the volume of the solid defined by this rotation. AB = DC = 4cm AD = CB = 2cm

asked by peter on January 9, 2011
31. Physics

A box is given a push up a 26.0° incline. When it reaches the bottom again it is only going 0.51 its original speed. Find the coefficient of kinetic friction.

asked by Rose on December 1, 2016
32. physics

an object of mass 4kg moves in a circle of radius 6m with constant of 12m/s find the angular velocity

asked by Anonymous on November 11, 2018
33. math

the front of a regulations goal for a professional sport is 7ft wide and 3ft high, find its area

asked by Anonymous on September 18, 2010
34. Math

Find the work done by a 15 N force in the direction of the vector (1,2,2) when it moves a particle from O(0,0,0) to P(1,-3,4) and then from P to A(7,2,5) Can somebody explain to me how to do this question i don't understand it.

asked by Christian on October 16, 2010
35. science

Height of object is 1 cm placed at a distance of 15 cm from a concave mirror of focal length 10 cm. Find nature, size and position

asked by Anonymous on April 6, 2017
36. Physical Science, Science

The barometric pressure in Breckenridge, Colorado (elevation 9600 feet) is 580 mm Hg. How many atmospheres is this? How do we find the answer for this?

asked by Apple on August 25, 2017
37. Statistics

The following data lists the average monthly snowfall for January in 15 cities around the US: 29 26 6 46 17 34 15 45 19 43 37 6 9 33 37 Find the mean, variance, and standard deviation.

asked by Jennifer on October 17, 2011

We have to find out which of these statements are true. I narrowed it down to 2 answers. a) if f"(0)=0, the the graph of f changes concavity at x=0 b) If the function f is continuous on the interval [a,b] and the integral from a to b of f(x)dx=0, then f

asked by Leanna on November 22, 2010
39. Calculus

Find the volume of the solid obtained by rotating the region enclosed by the graphs x=y^{5} and x=5sqrty about the y-axis over the interval [0,1].

asked by Claire on March 4, 2017
40. Rounding#'s

use a calculator to find each rounded to 4 decimal places. 1) sec 15.2 degrees 2) an acute angle theta if csctheta= 1.38

asked by Timmy on September 2, 2011

I posted this below but had no response. I would appreciate help with details please.How do I find the indefinite integral of h(u)=sin^2(1/5u) this is one fifth u. Does it involve double angle formulas? Thanks.

asked by mary on February 19, 2011
42. Math

An irregular polygon has its exterior angles as 140,120,142,132,112 n x degrees Find the value of x.

asked by Phinehas on April 4, 2017
43. Physics

A car starts from rest and accelerates uniformly at 2m/s2 for 10 sec . Find the velocity and displacement at the end of 10 seconds .

asked by Mohor on October 20, 2017
44. stats

Between 11 P.M. and midnight on Thursday night, Mystery Pizza gets an average of 4.2 telephone orders per hour. Find the probability that,

asked by mnmn on October 8, 2010
45. Ap Calculus

Find the area of the region bounded by the curves y=x^2-1 and y=cos(x). Give your answer correct to 2 decimal places

asked by Karen on February 13, 2019
46. math

The support wire for a sign meets the wall and the overhang as shown below. If m

asked by Mark on January 18, 2011
47. math

If a flywheel is 4 feet in diameter. Find the speed of a belt which drives the wheel at 400 revolutions per minute?

asked by Suchie :) on September 1, 2011
48. Social Studies

what region has the workforce to support a new industry I need help asap please help anyone I don't want the answer I just want a link I cant find a good website

asked by Reata on February 10, 2017
49. Math

Find total amount in compound interest account. \$9000 IS compounded semiannually at a rate of 11% for 20 years

asked by christopher on April 17, 2010
50. math

Find two point on a circle x^2+y^2=1 where the slope of the tangent line is -2 write the equation for the normal lines at these points.

asked by help on October 10, 2010
51. calculus

Find the smallest positive value of x which satisfies 1.400cos(1.000x) Give answer in four decimal places for accuracy.

asked by Anonymous on November 1, 2011
52. Another Calculus

Sorry I have been trying to figure this out all day. Find the largest and smallest values of the given function over the prescribed closed, bounded interval. g(t)= (t^3/2)(e^-2t) for 0

asked by Carly on July 11, 2011
53. Math trig.

find the length of the arc intercepted by a central angle of 35 degree 28' in a circle of radius 15ft....i cant figure out how to get it ??

asked by josh on September 15, 2011
54. geometry

A rectangle is 80 cm long and 20 cm wide. Find, to the nearest degree, the acute angle formed at the intersection of the diagonals.

asked by c on February 13, 2011
55. Math

Starting at 1:00 p.m., the temperature changes −4 degrees Fahrenheit per hour. Write and solve an equation to find how many hours xx it will take to reach −1°F.

asked by Madeline on October 26, 2016
56. Chemistry

What's the highest occupied molecular orbital of I-? I'm really confused here, I thought you could only find HOMO for the first two rows of the periodic table.

asked by echem on April 5, 2010
57. Algebra

If \$6000 invested for one year yields \$390 in interest, find the investment rate. how do I set up this problem?

asked by Kelley on September 30, 2017
58. math

Let f be the invertible linear transformation represented by the matrix A = (-2 -3 2 -3) Find in terms of x and y the equation of the image f(C) and of the unit circle C

asked by s17 on February 5, 2017
59. math

Find the amount of money in an account after 12 years if \$1000 is deposited at 5% annual interest compounded quarterly.

asked by Meg on November 22, 2009
60. Math

Kate is 4yrs older than Margaret . In 7yrs the sum of their ages will be 70. How old are they now. How do you find kates age using mArgarets

asked by Amy on February 10, 2011
61. Trigonometry

Find the area of a sector, given a central angle of 240° and a radius of 15 cm. Round your answer to the nearest tenth please.

asked by CJ on January 12, 2011
62. calculus

Find the amount of a continuous money flow in which \$175 per year is being invested at 8%, compounded continuously for 20 years.

asked by Jordan on November 15, 2011
63. chemistry

How would you find the number of 'chalk molecules' it takes to write your name on the board? Explain what you would need to do,and provide a sample calculation.

asked by Cliff on April 23, 2010
64. 11 grade / physics

a body reaches the max height of 80m when projected at the angle of 30degree find the horizontal component

asked by muskan on March 15, 2017
65. math

Explain how to find the sum negative sixty-five plus positive forty-one using a number line, then give the answer.

asked by chachis on August 16, 2011
66. physics

Three point charges are on the x axis: −2 ¦ÌC at −3 m, 8 ¦ÌC at the origin, and −10 ¦ÌC at 3 m. Find the force on the first charge. The value of the Coulomb constant is 8.98755 ¡Á 109 N ¡¤ m2/C2.

asked by Anonymous on November 20, 2011
67. chemistry

How would you write the chemical equation for sodium nitrate + isopropyl alcohol. So it would be NANO3 (aq) + C3H8O (aq) -> But I'm not sure how to find the products, thanks for your help!

asked by emily on May 15, 2017
68. Physics

A student applies an upward force of 58 N to a 5.1-kg physics textbook. Find the book’s acceleration (positive for up, negative for down).

asked by martin on February 25, 2011
69. maths

help find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to sol.

asked by ryan j on October 26, 2011
70. sociology

which research technique (survey, observation,experiment, existing sources) would you find most useful when you have been asiigned to do a study of homelessness

asked by Anonymous on September 21, 2010
71. Winter Olympics

List of songs sung at wo 2010 opening ceremony. Sites would be appreciated, I tried to search but couldn't find much.

asked by Sara on February 17, 2010
72. Calculus

The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please... i am unable to get the correct answer :(

asked by Adam on October 22, 2010
73. trig

How do I find 1 positive and 1 negative coterminal angle for: 1) -460 degrees 2) 11pi/4 3) -12pi/5 WERE DO YOU GO TO GOOGLE BECAUSE I TIRED!

asked by Al on January 17, 2007
74. Math

Find the missing dimension of the cylinder. Round your answer to the nearest whole number. Volume = 10,000π in. The radius is 16

asked by Anonymous on February 12, 2019
75. pre-calc

Find a vector perpendicular to the plane containing the given points. (0,-2,2), (1,2,-3), and (4,0,-1) My teacher was unable to finish the lesson, but I'd like to know how to solve this problem.

asked by James on February 17, 2010
76. Algebra1

Here's the problem. I have to write an equationa and solve. The greater of two consecutive integers is 15 more than twice the smaller. Find the intergers. Thank you guys so much! =)

asked by Nicole on November 1, 2009
77. calc

how do i find the derivative of........ (sinx) ^2-(cosx) ^2 i put it into my t-89 and got -4sinxcosx butthats not a multiple choice. can someone tel me how to do this by hand?

asked by James on March 28, 2010
78. math

How would I find out the area and perimeter of a square that is cut into two trianlges with a hypotenuse of 6squared2 and has two 45 degrees and one 90 degree angle?

asked by Carli on November 16, 2009
79. Algebra

I am stuck... find the real solutions of the equation x to the 4th power minus 20x squared plus 64 equals 0

asked by Kyle on December 8, 2010
80. calculus

find the maximum and minimum value of the function f(x)= x-x^3 on the interval [-2,2] I also need help with this question What is the largest possible product of two negative number whose sum is 1?

asked by jake on January 8, 2017
81. Calculus

"Find the volume of the solid generated by revolving the region bounded by the graphs of the given equations about the indicated lines: y = 2x^2 y = 0 x = 2 About the line y = 8"

asked by Stuck on April 18, 2010
82. calculus

Find the dimensions of the rectangular garden of greatest area that can be fenced off for \$6000, if the cost of fencing is \$5 per meter.

asked by Yetty on June 19, 2011
83. math

Find the equivalent measure. 45 feet=___________yards show work I suggest looking up the conversion factor between the two and working from there

asked by Katelyn on March 27, 2007
84. Calculus

I was wondering how to find the x and the y intercepts of the following equation y = xe^(-x^2/2) I know for a fact that the intercept is through 0,0 but I don't know how to do this long hand. When x is zero, y is zero, and vice versa.

asked by Thomas on December 10, 2006

The random variable x is normally distributed with mean =1,000 and standard deviation =100. Sketch and find each of the following probabilities: P(x

asked by Shirley on October 16, 2011
86. Math

I need to write 2 equations that represent the same exponential function with a y-intercept of 5 and an asymptote at y=3. I got y=2^(x+1) + 3 but I don't know how to find the second equation. Can someone please explain this to me. Thanks.

asked by Jim on November 27, 2009
87. Science

Find out the energy of emitted photon when an electron in Li2+ ion returns to its ground state from n=2 level.

asked by Wendy on August 21, 2018
88. Geometry

Given circle A with circumference 20 pi and the length of arc KD equal to 10/3 pi. Find the area of the shaded region. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Is there any way I can post a diagram?

asked by Gemma on March 6, 2011
89. Math

Hello. I am trying to help out my sister and find patterns in numbers.... Ex/ 1+2 2+2 3+2 4+2 My question is... I can't figure out what the pattern is in the following set... 1 goes to 4 2 goes to 7 3 goes to 10 and 4 goes to 13...... I initially thought

asked by David on September 9, 2011
90. Science

Explain how you could use a spring, a ruler, some standard masses,and some graph paper to find the weight of an unknown object.

asked by Abdullah on October 25, 2018
91. science 6 class

Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.Explain how could use a spring,a ruler,some standard masses and some graph paper to find the weight of an unknown object.

asked by Anonymous on January 29, 2018
92. college

Find the minimum initial speed of a projectile in order for it to reach a height of 2039 km above the surface of the earth.

asked by Anonymous on April 29, 2010
93. Physics 203

An object is projected upward from the surface of the Earth with an initial speed of 4.6 km/s. Find the maximum height it reaches.

asked by Kayla on April 26, 2011
94. geometry

Find the area of each figure. Round to the nearest hundredth. There is a picture of a circle with a diameter of 6 squared root of 2

asked by jasmeen on October 12, 2011
95. calcxulus1

Find the critical points of the function. (Enter your answers as a comma-separated list.) g(x) = square root(81 − x^2)

asked by John on October 23, 2017
96. math

In covering a distance of 30km.'A' takes 2 hours more than 'B'. If 'A' doubles his speed,he would take 1 hour less than 'B' . find their rates of walking.

asked by help on November 16, 2016
97. General Physics II

Find the length of the arc on a circle of radius 10 ft intercepted by a central angle 276. Answer in units of ft.

asked by Chari' on July 9, 2011
98. math

complete to show how you can find the sum by making a ten, hundred, or thousand. ex. 9 + 5= 9+1+____ 10+_____ ________

asked by Anonymous on September 26, 2011
99. algebra 2

by graphing the system of constraints find the values of x and y that minimizes the objective function x+2y>8 x>2 y>0 >=greater than or equal to my answer was 0,10 am i right?

asked by the world forgot on September 29, 2017
100. geometry

the bases of isosceles trapeziod abcd are 17 and 25cm and its base angles are 45 degrees. find the height of the trapezoid

asked by lakyn on September 13, 2011