# 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 464
1. ## math

An archaeologist in Turkey discovers a spear that contains 80% of its original amount of C-14. Find the age of the spear head to the nearest year.

asked by Anonymous on August 31, 2018
2. ## Chemistry

If the wavelength of an electron is equal to the radius of the n=2 orbit in He+, what must the velocity of the electron be? The answer is 6.88 x 10^6 m/s How do I find this? I tried E = Z^2hcRh/n^2 and E= 1/2mv^2 with Z = 1, n=2, m=9.109E-31

asked by Shaniquaa on December 7, 2008
3. ## Pre-calc

1. Find the equation for a quadratic function whose vertex is (2,5) and whose graph contains the point (-8,15). 2.What are the x- and y- intercepts for y=2x^2+x-6 Plesee explai. I want to learn to learn how to do them.

asked by Leslie on July 12, 2010
4. ## math

a sum of money at certain rate of interest of amount to 8320 in 2years and 9685 in 3 and half years.find the sum ?

asked by mahe on October 16, 2018
5. ## cal3

Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy

asked by Lucy on February 27, 2012
6. ## probability

If a number is chosen at random from the integers 5 to 25 inclusive, find the probability that the number is a) multiple of 5 or 3 b) even or prime numbers c) less or greater than 18

asked by Anonymous on May 31, 2016
7. ## Calc

Hi! Please help :-) Find an equation for the circle of the curvature of the curve r(t) = ti + (sint)j at the point (pi/2, 1) (The curve parametrizes the graph of y = sinx in the xy-plane)

8. ## Maths

In the triangle ABC, AD is perpendicular to BC. Angle CAD=y and angle DBA=x. AC=17 and BD=25 units Find the value of 5cosx -17siny+tanx

asked by Rachana on September 12, 2016
9. ## statistics

Suppose that a coin is tossed 100 times. Let X be the number of times that it shows heads. Find the mean and standard deviation of X.

asked by Mschribe on December 13, 2010
10. ## english

Which is the best place to find more info about the development of photography in the mid 1800/s. -photography manual - history textbook .encyclopedia

asked by Anonymous on May 10, 2014
11. ## science

a particle moves 1/3rd of the distance in aspeed of 6km/hr and rest with a speed of 18km/hr.find the average speed?

asked by sidharth on September 9, 2015
12. ## math

From a rectangular sheet of acrylic of dimensions 32 cm by 24 cm 64 circular buttons, each of diameter 3.5 cm , have been cut out. Find the area of the remaining sheet.

asked by avinash on August 22, 2016
13. ## Physics

2 forces acting at a point make angles of 25 and 65 degrees respectively with their resultant which has a magnitude of 150 N .Find the magnitude of the two components.

asked by Joseph on December 31, 2010
14. ## geometry

the lengths of the diagonal of a rhombus are 2 in and 5 in. find the measure of the angles of the rhombus to the nearest degree. if it helps, we are learning how to use tangent right now!

asked by Lily on February 14, 2011
15. ## Precalc

Find a rectangular equation for the plane curve defined by the parametric equations. x = sin(theta) y = 3cos(theta)

asked by Heather on June 10, 2015
16. ## english

where can i find some reason to support this opinion "high schools should not only prepare students for college, they also need to help them prepare future possibilities."

asked by 000 on December 13, 2010
17. ## differential calculus

A bulldozer costs \$120,000 and each year it depreciates 8% of its original value. Find a formula(equation) for the value V of the bulldozer after t years.

asked by christine on September 13, 2016
18. ## Math

A cylindrical soup can has a radius of 4.1 inches and a height of 2 inches. Find the volume of this can. a.In terms of pi b. Also.To the nearest cubic inch

asked by MP on January 18, 2013
19. ## math

Find equations for the asymptotes of the hyperbola x2/9 - y2/81 = 1 Rewrite the equation as (x/3)^2 - (y/9)^2 = 1 When both x and y are very large in absolute value, the "1" on the right is negligible in comparison, so y/9 approaches +/- x/3 The asymptotes

asked by zinnia on August 5, 2007
20. ## Eastern Religion

asked by Onlin Bus on February 10, 2010
21. ## Math 172

Find the break-even point for the firm whose cost function C and revenue function R are given. C(x) = 14x + 9,000; R(x) = 23x (x, y) = (_________)

asked by Leyla on September 12, 2016
22. ## geometry

A hemispherical dome holds a volume of 486π..find the surface area (omit the area of the circle)? I just need the formulas id use

asked by Jane on May 30, 2014
23. ## physics

find the magnitude and direction needed to accelerate a 100-g mass with an acceleration = -.255 m/s squared+.650 m/s squared

asked by Trini on October 9, 2013

The parabola with the general equation y= ax^2 + bx+ 9 where0 < a < 10 and 0 < b < 20 touches the x-axis at one point only. The graph passes through the point (1, 25). Find the values of a and b. Please help.

asked by Kevin on June 29, 2018
25. ## Math

Two right angled triangles are joined with a common height and the height is 12m and base of each triangle = 5m.Find out the perimeter of whole figure

asked by Shikha on September 5, 2015
26. ## algebra/I appreciate your help

Find the future value, using the future value formula. Round the answer to the nearest cent. \$625 @ 5.5% compounded quarterly for 3 years.

asked by Mary Ann on May 18, 2014
27. ## Math

Find the sales necessary to break even (R = C) when the cost C of producing x units is C = 2.24x + 6100 and the revenue R from selling x units is R = 3.49x.

asked by Anonymous on August 22, 2018
28. ## Algebra

f(x) = 4x2; x = 2, x = 2 + h this is telling me to find the average rate of change and the net change? I found one but my answer is disapproved from a friend.

asked by miriam on July 20, 2015
29. ## math

Show how to find the quotient 18 divided by (-6) by using the following: a) the idea of division as finding a missing factor. b) the procedures for integer division.

asked by m on October 19, 2010
30. ## Physics

A light ray in air is incident on a water surface at a 44° angle of incidence. Find each of the following angles. (b) the angle of refraction °

asked by DCM on March 5, 2012
31. ## ALB 2

1.Find the greatest common factor in this problem. 12a3b2, 18a2b3, 6a4b4 2.Factor each of the following polynomials. 4s _ 6st _ 14st2

asked by JANE on February 13, 2008
32. ## maths

A tree casts a shadow 4 metre long on the ground, when the angle of elevation of the sun is 45°.find the height of the tree

asked by Anjali on March 4, 2017
33. ## Calculus

Can someone show how this question is solved. Consider the curve given by the equation 2y^3 + y^2 - y^5 = x^4 -2x^3 +x^2 Find all points at which the tangent line to the curve is horizontal or vertical. Thanks!

asked by Henry on July 18, 2015
34. ## Math

TheTemperature of midnight is -14°c,The roomtemperature increases at the rate of3°C per room .Find the temperature of the room At 7am and 12 noon

asked by Satyam on May 22, 2019
35. ## elementary math for teachers

The letters LACSIPE fell off a billboard. How many different ways can the letters be arranged, hoping to find the correct spelling of SPECIAL?

asked by jen on October 15, 2009
36. ## Calculus

Find the equation for a line which passes through the points (–1, 1) and (3, –7). Write the equation in slope-intercept form. Show work.

asked by Brian on March 10, 2012
37. ## Math

Of 20 scores, 19 are less than or equal to 10. Find the percentile rank of 10. They don't give you the exact number of tens so i don't really know how to do this? Could someone please explain?

asked by Angela on September 23, 2015
38. ## Math

How do you find decreasing intervals of 6x^3-63x^2-144x-2? I found my increasing intervals from placing the derivatives i just can't seem to solve for the decrease

asked by Alessandra on November 4, 2014
39. ## science

a ball is dropped from the roof of a building. it takes 10 seconds to reach the ground. find the height of the building.(g=9.8/s square)

asked by swagster on August 8, 2013
40. ## Math

Can someone help me find the technique or techniques used in this problem? 146 divided by 68. I thought that 14 and 7 are easy to divide, so I used 140 divided by 70, which is 2. The quotient is about 2.

asked by B.B. on June 12, 2009
41. ## Math

For each point in a set of points, its distance from (-2,4) is three times its distance from the line x=6 1. find the equation 2. tell which conic section the graph will be.

asked by Steven on March 1, 2012
42. ## physics

If a proton is accelerated from rest through a potential difference of 1500 V, find its final velocity. proton mass = 1.67 x10−27 kg

asked by angela on October 15, 2010
43. ## math 11

Is it possible for a rectangle with a perimeter of 44cm to have the area of 125cm^2 ? If so, find the dimensions of the rectangle. Figure out the equation in general form.

asked by riley on October 21, 2010
44. ## calculus

Can someone please help explain these two questions for me. For the first one my guess is that it is -infinity and for the second question it would be at 0. Find the limit. lim_(x->infinity) (x^(3) - 2x + 3)/(4 - 5 x^(2)) Locate the discontinuities of the

asked by Tersa on October 15, 2010
45. ## management

I need help on where to find information on the effectiveness of wal-marts control mechanisms. The mechanisms are: price, communication, power and trust.

asked by patiance on October 21, 2010
46. ## Math

Using nonperfect square method,find the square root of 418 correct to two decimal places, showing workings.

asked by Ebun on February 13, 2011
47. ## Physics

Two charges are placed on the x axis. One of the charges (q1 = +8.71C) is at x1 = +3.00 cm and the other (q2 = -28.6C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x =

asked by Alex on September 28, 2012
48. ## physics

The 20kg object is dropped from a height of 2 meters. Find its speed when it hits the ground. Give your answer in meters per second.

asked by Darcie on February 26, 2012
49. ## statistics

Assume that a set of test scores is normally distributed with a mean of 80 and a standard deviation of 25. Use the 68-95-99.7 rule to find the following quantities. The percentage of scores less than 80 is?

asked by nicole on May 24, 2011
50. ## algebra 1

f(x) = -2x^2+4x+1 Can someone explain how the f(x) is worked into this function? I am supposed to graph the function and find the vertex and the axis of symmetry.I'm a little lost no major.

asked by Paige on March 11, 2017
51. ## college physics

Two charges are placed on the x axis. One of the charges (q1 = +8.71C) is at x1 = +3.00 cm and the other (q2 = -28.6C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x =

asked by Alex on September 28, 2012
52. ## Math

Find the amount of the regular payments needed to amortize a \$90000 debt at 7% compounded annually with 12 annual payments.

asked by Kristen Morris on December 13, 2011
53. ## CHEMMMMM

Find the Electron DOMAIN GEOMETRY & the MOLECULAR GEOMETRY of the following compounds: 1) ICl3 2) PCl3 3) XeF4 4) SF6 5) TeCl4

asked by BMW on March 30, 2012
54. ## math

1.find the future value for the following investment : a) RM19999 at 4.5% COMPOUNDED every 2 months for 2 year b) RM 120000 at 5 3/4 percent compounded monthly for 3 1/4 years

asked by fizz on April 24, 2014
55. ## English

What is an example of morbidity in "The Fall Of the House of Usher" by Edgar Allan Poe ? I know what morbidity is but it's hard finding an example in the story so can you please help me find an example of it.

asked by Jessica on November 24, 2014
56. ## geometry

Two circles of equal radius intersect each other such that each circle passes through the center of the other circle. Find the equation for the perimeter of this figure.

asked by Leah on February 1, 2011
57. ## Math

How long is a rectangle field with a width of 3/5 mile and an area if 21/50 square mile? Use the formula A=lw to find the missing length.

asked by Amy on November 11, 2014
58. ## science

a particle is projected vertically upward from ground with velocity 10 m/s. Find which time particle reaches highest point?

asked by Anonymous on June 18, 2016
59. ## MATH

The odds in favor of Carl beating his friend in a round of golf are 7 : 4. Find the probability that Carl will lose. would the answer be 7/11?

60. ## poetry

What is the poem The Jumblies by Edward Lear about? What words and/or phrases do you find interesting? How is the poem structured? What did he want us to think about? plz help thanks in advance :)

asked by Geoff on October 30, 2008
61. ## Physics

A particle is projected vertically upward from ground with velocity 10 m/s. Find which time particle reaches highest point?

asked by Pragya on June 18, 2016
62. ## math

The decay of 333 mg of a radioactive substance is given by A(t) = 333e-0.024t, where t is time in years. Find the amount left after 17 years.

asked by allison on April 8, 2011
63. ## science

An iron cylinder with radius 1.0 cm and length 25 cm has one end held at 250°C and the other at 20°C. Find the heat-flow rate through the cylinder

asked by Pam on October 8, 2015
64. ## math(compunded interest )

1.find the future value for the following investment : a) RM19999 at 4.5% COMPOUNDED every 2 months for 2 year b) RM 120000 at 5 3/4 percent compounded monthly for 3 1/4 years

asked by fizz on April 24, 2014
65. ## Pre-CALC

Can anyone help me with this problem step by step please... Find the area inside the ellipse in the xy-plane determined by the given equation x^2 y^2 ____ + ___ =1 10 25

asked by Amy on December 7, 2010
66. ## calculus

find linear approximations for each of the following and put a bound on the error of the estimate. 1. (7.985)^1/3 using f(x)=x^1/3 and a=8 2. (.9997)^100 using f(x)=x^100 and a=1 please help explain please too

asked by C on December 9, 2010
67. ## Pre Algebra

I am having a problem with slopes and intercepts problems. Write each equation in slope-intercept form. Find slope and y-inercept. 3x - y = 14

asked by Rosalind on November 28, 2011
68. ## Math?

I have to do this portfolio and I have read back and can’t find what I am suppose to be writing or doing help!! Misleading Media Watchdog Portfolio 6th grade

asked by Angie on September 6, 2018
69. ## Trigononometry and plaine sperical

Find the exact values of the six trigonometric functions for each of the following angles.draw the angles in standard position 1.300 degree

asked by Jomar castillo on November 30, 2014
70. ## ALGEBRA!!

calculate P(i) for the following polynomial p(x)=x3+2x2-5x+8 Find | z | for each of the following complex numbers and represent them on a complex plane. a. z=-3-4i b. v=5-12i c.u=7+24i d.w=-9+40i e.p=1+3i f.t=-2i g.n=4 h.m=0 i.s=(√3-i)2

asked by natali on October 7, 2010
71. ## Physics

You walk 25 m south and 40 m east. Find the magnitude and direction of the resultant displacement both graphically and algebraically. Magnitude is 47.16 What is the degree?

asked by HS Senior on October 1, 2018
72. ## Math

Plz help me to solve this Find the time in which an amount of rs.6250 amount to rs.6760 at 4% per annum,if the intrest is compounded anually.

asked by Simran on January 9, 2013
73. ## Physics

forces of 185N and 245N act east and south respectively on an 80 kg mass.If the force of friction is ZERO , find the accleration of the mass.

asked by Jo on December 9, 2010
74. ## college calculus

find a and b so that f(x)=x^2+ax+b has a local min at (6,-5) i found the derivative: f'=2x+a then i found a 0=2x+a 0=2(6)+a 0=12+a a=-12 but i can't seem to get the correct value for b. i plugged -5 into the original function, but my book says the answer

asked by kate on October 23, 2008

Find a simplified expression for cos(tan^(-1)(x/5)) Evaluate cos(sin^(-1)(1/11)), giving your answer as an exact value (no decimals)

asked by Anonymous on April 3, 2013
76. ## Math

a pine tree casts a shadow that is 7.9 feet long when the sun is 80 degrees above the horizon find the height of the tree

asked by Katelynn on December 14, 2010
77. ## calculus

Find the absolute maximum and absolute minimum values of f on the given interval [π/4, 7π/4]. (Round all answers to two decimal places.) f(t) = t + cot(t/2)

asked by Michael on March 2, 2012
78. ## physics

A 50.0 g sample of lead starts at 22 degrees Celsius and is heated until it absorbs 8.7 X 10^2 of energy. Find the final temperature of the lead

asked by Jiskha Help on November 15, 2014
79. ## pre-alg

In a pattern, the # of colored tiles used in row x is 3 to the power of x. Find the number of tiles used in rows a, 5, & 6. i don't get this problem & could use a little help, plz!

asked by kathryn on December 11, 2007
80. ## Pre-Calc

Find the values of the trigonometric functions of è from the information given. (sin è, cos è, csc è, sec è, cot è) tan è = −2, sin è > 0

asked by Kelvin on March 24, 2012
81. ## math

if three sides of a triangle are 6cm ,8cm and 10cm then find the altitude of the triangle using the largest side as base.... really need help with this question

asked by mahira on June 7, 2019
82. ## math

In my book, it says to use a number line to find the sum of the equations. Should I draw a numberline on my paper, or just write down the answer on the paper?

asked by lily on October 22, 2009
83. ## algebra

a window is shaped like a rectangle whose perimeter is 294 in. The length is 6 times as long as the width. Find the lengthnand the width.

asked by shelia on February 10, 2011
84. ## Algebra

Two hikers are 22 miles apart and walking toward each other. They meet in 5 hours. Find the rate of each hiker if one hiker walks 2.2 mph faster than the other.

asked by Pat on February 24, 2017
85. ## calculus

Find the distance, in feet, a particle travels in its first 4 seconds of travel, if it moves according to the velocity equation v(t)= −t2 + 4 (in feet/sec).

asked by Anonymous on June 15, 2015
86. ## physics

A 50.0 g sample of lead starts at 22 degrees Celsius and is heated until it absorbs 8.7 X 10^2 of energy. Find the final temperature of the lead

asked by Princess on November 14, 2014
87. ## Pre Algebra

Which special version of the Pythagorean Theorem can you use to find the length of any square's diagonal, d, using only the length of its side, s? plz tell me the equation!!!

asked by Labbayk on October 3, 2015
88. ## calculus-derivatives

Hello, please help me. I needed to find the derivative of f(x)= x^4 -2x^3 + x +1. I got f'(x)= 4x^3 -6x^2 +1. I would like to figure out the critical numbers so I can figure out where it increases and decreases, but I have no idea how to factor it... Is it

asked by mary on March 15, 2012
89. ## calculus I

find a and b so that f(x)=x^2+ax+b has a local min at (6,-5) i found the derivative: f'=2x+a then i found a 0=2x+a 0=2(6)+a 0=12+a a=-12 but i can't seem to get the correct value for b. i plugged -5 into the original function, but my book says the answer

asked by kate on October 23, 2008
90. ## Algebra

The area of a rectangular blanket in square centimetersis 40x^2+2x-65. The width is 4x-5cm^2. Find the dimensions of the blanket in terms of x.

asked by bailey on January 8, 2007
91. ## geometry

A cone has a volume of 36pi cubic meters. Its height is four times its radius. Find the surface area of the cone.

asked by Piggy on March 2, 2012
92. ## physics

A horizontal plank (m = 2.0 kg, L = 1.0 m) is pivoted at one end. A spring. (k = 1.0 x 10. 3. N/m) is attached at the other end find the angular frequence for small oscillations?

asked by shan on December 11, 2007
93. ## Pre-calc

The question is solve for cosx= 0.60 on the interval [0,2pi). The answer is to be posted in radians. I don't understand how to find the answer.

asked by Katie on October 7, 2010
94. ## math

Explain two ways that you can solve for R in the following division statement. Then, use one of your methods to find R. x^3+4x^2-3x=(x-1)(x^2+5x+2)+R could you divide x^3+4x^2-3x by (x-1) to get the quotion of (x^2+5x+2)+ the remainder which would be r?

asked by Matt on July 7, 2016
95. ## Math

"Carlos started at sea level, climbed a cliff to a height of 14 m, then dived 19 m. Find the level at which his dive ended."

asked by Ali on June 11, 2016
96. ## Math St. John's Academy

A room 5 M long and 4 m wide is surrounded by a wonder if the verandah occupies an area of 22 metre square find the width of the verandah

asked by Pragya Singh on December 27, 2017
97. ## Math

Here is the problem: Find the missing parts of 1/200. Here are my answers: Percent= 1/2% Fraction= 1/200 Decimal= .005. Is this correct?

asked by B.B. on July 14, 2009
98. ## Calculus!

For the function y=(e^2x)+(3x)-(10), use Newton's method and the calculator method to find the x value for which y=15. Please show your work so that I can understand the question! Thank you so much!! it means alot!!

asked by Sam on March 17, 2011
99. ## Math

Find the loss percentage if Banrap incurred a loss of RS. 310 when he sold cosmetic for RS. 1550. (In book answer is given as 25%.)

asked by Deepak on August 1, 2018
100. ## intermediate math

the length of a rectangular plot of land is 4 times the width. of the perimeter is 600 feet, find the dimensions of the plot

asked by mary on January 28, 2013