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 553
1. math

Calculate the magnitude of a when a = (2, 3, -2). Find (1/|a|)xa. Is it a unit vector. I calculated the |a| = sqrt17. I don't know how to determine if it's a unit vector or not?

asked by Anonymous on March 29, 2008
2. geometry

The volume of a small circle is 10 cubic meters. Find the volume of the larger sphere in cubis meters.

asked by Bryce on March 26, 2013
3. Calculus

S=6x^2 is the surface area of a cube. Find the exact change in surface area when x is increased from 6 cm to 6.1 cm . Please Help. It makes no sense.

asked by MiKe on November 14, 2011
4. calculus

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. y=3+√X, y=3+1/5x What is the area?

asked by Nick on July 14, 2015
5. MATH(quick Help please)

Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. Show work thanks

asked by Allen on June 6, 2011
6. math

The lengths of the sides of a triangle are 13, 14 and 15 units. Find the shortest side of a similar triangle whose longest side is 21.

asked by Ana on July 9, 2015
7. physics

A block accelerates at 3.3 m/s2 down a plane inclined at an angle 27.0. m μk 3.3 m/s2 27 Find μk between the block and the in- clined plane. The acceleration of gravity is 9.81 m/s2 .

asked by james on November 10, 2013
8. MAth

the perimetre of rectangle is 240cm .if length is increased by 10% and breadth is decreased by 20% the perimetre remains same. find the length

asked by deepti on April 19, 2017
9. Algebra/still clueless

The length of a triangle is twice the width. The area is 2yd^2. Please, find length and width and simplify. Should I convert the yards? :-)

asked by ShelbyA on April 29, 2012
10. Geometry

the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

asked by HELP!!! URGENT on December 2, 2011
11. Algebra

If the sides of a square are increased by 3 cm, its area becomes 100 cm2. Find the length of the sides of the original square.

asked by Anonymous on April 16, 2012
12. Algebra

The length of a rectangle is two meters less than twice the width. If the area of the rectangle is 222 square meters, find the dimensions

asked by Eleejah on July 22, 2015
13. English I

What is the theme of the poem, "The Road Not Taken"? I think the theme is making a decisions that is different from everybody else. I am also suppose to find the subject of the poem but I am lost with that.

asked by Abriel on January 31, 2010
14. Math

The price of a fan increased by 25% to \$48.75. Find the original price of the fan. This is how I did it. 100/25%=400. 48.75-4.00= 44.25. I'm not sure if I'm solving it the correct way can someone help please

asked by Unknown on March 6, 2013
15. Geometry

the number of sides in 2 regular polygons is in the ratio 5:4 an the difference between their angles is 9^o. Find the number of sides in the polygon

asked by HELP!!! URGENT on December 2, 2011
16. algebra

Given g(x) = –2x – 1, find g(3a). G(3a)=-2(3a)-1 = -6a-1 = -5 is this right or do I just stop at -6a-1 Just stop at -6a-1 Matt Also, let me add this. If you have -6-1 (without the "a") that would be -7. Not -5. But -6a-1 is the correct answer for this

asked by confused on May 25, 2007
17. Chemistry.

Calculate the mass of CaCO3 that would produce 40 mL at STP. STP means P= 1 atm and T= 0 degrees C. How do I find the mass?

asked by Jordan on November 22, 2008
18. Maths

find the equation of the perpendicular bisector of the line joining P(2, -4) to Q(-5,1) A. 8y-14x 13=0 B. 8y-14x-13=0 C. 8y 14x-13=0 D. 8y 14x 13=0 Please I need someone to help me with this, with an explanatory workings.

asked by Francis on May 21, 2014
19. MATH

Let m be any real number. Then the equation (m+1)^2 x-my-m^2-1=0 is a line. There is a unique point which this line goes through no matter what the value of m is; find the coordinates of this point.

asked by Janice - Please Help!!! on June 14, 2011
20. Math

A coffee can has a volume of 137.375 cubic inches and a height of 7 inches. Find the circumference of this coffee can.

asked by Anonymous on June 24, 2015
21. trigonometry

find the values of y if the distance between the two points (10,y) and (16,2) is 10. i wrote down the distance formula: 10=SQRT(16-10)squared + (2-y)squared now how do i solve for y??

asked by y912f on January 15, 2009
22. math

The volume of a cube is increasing at a rate of 2 1/2cm cube/sec. Find the rate of change of sides .

asked by Princeton on April 21, 2016
23. Calculus

Inclusive of a 6.4% tax, a diamond ring sold for \$2128.00. Find the price of the ring before the tax was added.

asked by Darlene on November 4, 2012
24. Physics

Supposed instead, the bird had leaped with a displacement having an x-component of 32.7m and a y-component 23.4m . Find the magnitude and direction of the displacement vector.

asked by Juggy on July 16, 2018
25. math

The sum of four consecutive odd integers is -72. Write an equation and find the values of the 4 integers. I think that the equation is -x-x-x-(-x+1). So far that's where I'm am. Am I on the right track?

asked by keisha on November 23, 2007
26. Geometry

Point T is in the interior of ∠PQR. Find the m∠PQR if the following conditions apply. The m∠PQR = (10x - 7)°, the m∠RQT = 5x°, and the m∠PQT = (4x + 6)° The ﻿m∠PQR is=

asked by jiovany on July 8, 2014
27. Algebra

The base of a triangle is 8cm greater than the height. The area is 42cm^2. Find the height and length of the base.

asked by Kim on January 14, 2009
28. math

Question 2.2. The height of a triangle is 5 m less than its base. The area of the triangle is 42 m2. Find the length of the base. (Points : 1) 12 m 11 m 8 m 7 m i think it's 12m

asked by tony on June 11, 2015
29. math

the length of a rectangle is 23 centimeters less than five times its width. Its area is 42 square centimeters. Find the dimensions of the rectangle

asked by Leticia on April 19, 2016
30. Trig Question

Given that tan x= -3/4 and x is in the second quadrant. Find sin 2x, cos 2x, and tan 2x (Exact, no decimals). Please show step-by-step, thank you!

asked by Anonymous on April 26, 2012
31. Math

The area of parallelogram with base 2.5 cm height 3 cm equals to triangle its side length 5 cm Find the height of triangle.

asked by Mido on April 5, 2016
32. math

Let theta be an angle in quadrant IV such that sin(theta)=-(2)/(5). Find the exact values of sec(theta) and tan(theta).

asked by Cody on August 3, 2018
33. chem help

How do I find charges for ions of elements. Group 1 has 1+ charges, group 2 has a 2+ charge and so on...what about the exceptions? In can have a 3+ or a 1+ how am I supposed to figure that out?

asked by Ciara on November 24, 2007
34. algebra

a two digit number is four times the sum of its digits and twice the product of the digit. find the number using elimination method

asked by abhishek on June 12, 2011
35. English

Where is the quote in Macbeth where Macbeth realises that the witches have tricked him? I think it starts with something like 'lie, lie.' I have been unable to find can someone help please.

asked by Joey on February 4, 2009
36. math

a train is moving at 40km/hr and rain is falling at 10km/hr find velocity of rain relative to train

asked by ahmed on May 25, 2010
37. Algebra

Find the distance between (7,0) and (-7,0) The y coordinates of the two points are the same, and the difference in x coordinates is 7 - (-7) = 14. What does that tell you about the direction and length of the line connecting the two points?

asked by Tomika on June 27, 2007
38. math

aviva has a total of 52 coins, all of which are either dimes or nickels. The total value of the coins is \$4.05. Find the number of each type of coin.

asked by rebecca black on November 5, 2012
39. Physics

A 25 N box is pulled vertically upward by means of a cord.Find the acceleration of the box if the tension in the cord is 35 N.

asked by Arcel on April 5, 2016
40. Math

Mrs.dude is buying 2 pounds of chocolate for \$7.50 . Write an expression to find the cost of 4.5 pounds of chocolate

asked by John on April 5, 2011
41. math

Jill knows her average score on five tests is 88. She can find all but one test. She has tests with scores of 96,83,100, and 79. What is the missing test?

asked by Nelson on April 8, 2011
42. math

A metal sphere has a mass of 1 kg. 1 cubic centimeter of this metal has a mass of 4.8 grams. find the radius. how do you work this out?

asked by maya on September 22, 2014
43. math

Two non-negative numbers are chosen such that their sum is 30. Find the numbers if the sum of their squares is to be a maximum. Explanation to solve this would help !

asked by David on April 10, 2013
44. Calculus

Find how many terms are required to approximate the sum of the series from 1 to infinity of (-1)^(n+1)/(n^3) with an error of less than 0.001. I think 11 terms are required.

asked by Anonymous on March 7, 2018
45. science

Name 3 ways to find out about the weather in our area.choose which one is the best for finding the information right away.choose which one is the best for predicting weather in future

asked by jil on October 18, 2008
46. Calculus

Find the xy-equation of the curve that passes through (-2, -2) and whose slope at any point on the curve is equal to 5 times the x-coordinate of that point

asked by James on November 4, 2016
47. chemistry

If one atomic mass unit is equal to 1.6606 x 10-24 g, what is the mass in grams of 83549 atoms of Cu? (find in grams)

asked by No one of importance on September 15, 2012
48. Physics

The maximum and minimum magnitudes of the resultant of two given vectors are 17N and 7N respectively. If two vectors are at right angles to each other, then find the magnitude of their resultant?

asked by ABC on June 14, 2017
49. physics

A particle of mass m1 is kept at x = 0 and another of mass m2 at x = d. When a third particle is kept at x = d/4, it experiences no net gravitational force due to the two particles. Find m2/m1.

asked by Anonymous on September 19, 2014
50. physics

A particle of mass m1 is kept at x = 0 and another of mass m2 at x = d. When a third particle is kept at x = d/4, it experiences no net gravitational force due to the two particles. Find m2/m1.

asked by Anonymous on September 19, 2014
51. Math

Consider the function f(x) = 7 x + 3 {x ^ -1 }. For this function there are four important intervals: (-infinity, A], [A,B),(B,C), and [C,infinity) where A, B and C are either critical numbers or points at which f(x) is undefined. Find A, B and C

asked by Salman on November 7, 2009
52. Algebra

Word problem: The sum of two numbers is 26.4. One number is five times the other number. Find the numbers. It's probably: x+y=26.4 x=5y But, I could be wrong and I don't know where to go from there.

asked by Amy on September 13, 2012
53. reports/writing

Im trying to write an paper on why college students don't vote. Where can i find information on college students not voting?

asked by Bryan on October 14, 2008
54. equation of the normal

An equation of the normal to the graph of f(x) = x / (2x-3) at (1,f(1)) is ........ find f' Then, the slope of the normal will be -1/f' Make the equation g(x)= -1/f' + b put in the point 1, f(1), and solve for b, and you have it.

asked by Jen on December 9, 2006
55. Madison

From the molecular equation find the overall ionic and net ionic: Molecular: H3PO4 (aq) + 3NaOH (aq) --> Na3PO4 (aq) + 3H2O (l)

asked by Chem on March 8, 2019
56. math

The sales of a kids sneakers rose from \$3 billion to \$3.8 billion. Find the percent of increase to the nearest whole percent?

asked by Anonymous on May 26, 2016
57. physics

Ant climb up 5 stairs, each of length 20 cm and height 20 cm . Find the distance covered and displacement covered by ant ?

asked by abcd on June 20, 2017
58. calculus help

consider lim -->0^+ 1)sin(4x)/sin(3x) find the limit using a table of values 2)based on your answer what should the limit equal?

asked by Kimberly on September 12, 2012
59. physics

Ant climb up 5 stairs, each of length 20 cm and height 20 cm . Find the distance covered and displacement covered by ant ?

asked by ........ on June 20, 2017
60. Math 8R - HW Qs. Check

Find a real number between (-2)2 and square root of 25 (-2)2 = 4 square root of 25 - 5 a) -3 b) 3.998 c) 4.225 My answer is a. Am I correct.

asked by Laruen on December 2, 2012
61. statistics

When a card is selected from a deck, find the probability of getting a diamond, a face card or a diamond, or a club and a king?

asked by chris on November 18, 2010
62. math

The size of an interior angle of a regular polygon is 3x° while its exterior angle is (x- 20)°. Find the number of sides of the polygon

asked by kudu on February 17, 2015
63. Calculas-Differentiation

The area,Acm^2, of a blot of ink is growing such that after t seconds,it is given by A=3t^2+1/5t. Find the rate at which the area is changing after 2 seconds.

asked by Lam on November 8, 2016
64. Math - Geometry

The bases of a trapezoid are 6'' and 9'' long. If the distance between the bases is 8'', find the distance from the intersection of the diagonals to the longer base.

asked by Tyler Lowmiller on April 27, 2010
65. Math

Find The Lateral Surface Area And Total Surface Area Of A Right Circular Cylinder In Which: r = 4ft, h = 12ft

asked by Dawit Z.M on June 11, 2017
66. statistics

A sample of four different calculators is randomly selected from a group containing 15 that are defective and 26 that have no defects. Find the probability that at least one of the calculators is defective

asked by Anonymous on March 18, 2019
67. math

While walking outside on a hike 66% or 20, of the students in the class wore jackets. Find the number of students in the entire class.

asked by Now plzzzz!!PLEASE ANSWER!!! now plzzz on November 30, 2012
68. Physics: Equilibrium and Inclined Planes

Two forces act on an object. One force is 8.0 N horizontally and the second is 10.0 N vertically. Find the force that will produce equilibrium for the object.

asked by Anayeli on October 28, 2007
69. Physics

A car accelerates from rest at 1.70 m/s2 along a 220-m stretch of road. Find the car’s velocity at the end of the stretch.

asked by Maria on October 20, 2010
70. maths permutation and combination

Your password for a given website is made up of three letters followed by four numbers. Find the number of possible passwords if there are no restrictions on what three letters and what four numbers can be used.

asked by matt on April 13, 2008
71. Business maths

a dealer makes a profit of 25% when he sells a shirt at a discount of 30%. if the profit is 91, find the marked price of this shirt.

asked by Mina on September 17, 2016
72. physics

A 75 kg box slides down a 25o ramp with an acceleration of 3.6 m/s2. Find the coefficient of kinetic friction between the box and the ramp.

asked by Anonymous on November 4, 2009
73. Algebra

Phil is twice as old as James, Peter is 3 years younger than Phil, the sum of their ages is 32. Find their individual ages

asked by Phylliep on March 7, 2016
74. year 7 french

for my french homework i need to translate countries from french into english . i have found some but not all i can`t find a website that helps me . thanks to all who helps

asked by lisa on February 23, 2008
75. Geometry

Set up a system to solve. Two angles are complementary. Four times one angle is equal to the other angle plus 10. Find the two angles.

asked by ashley on October 8, 2015
76. math

an 80 foot flag pole casts a 30 foot shadow . find the height of the tree if its shadow is 9 feet

asked by erika on March 6, 2009
77. Math

the altitude, AD, to the hypotenuse BC of right triangle ABC divides the hypotenuse into segments that are 8 and 10 cm long. find the length of the altitude.

asked by anae on October 19, 2013
78. Math - Please Help

Find two positive fractions such that if we switch the denominators, the sum afterthe switch is 50 times the original sum.

asked by qwerty123 on February 9, 2011
79. Math

Phil is twice as old as James, Peter is 3 years younger than Phil, the sum of their ages is 32. Find their individual ages

asked by Phylliep on March 7, 2016
80. US History

I don't understand what the difference was between the Lodge reservation and the Hitchcock reservation. Both reservations seem to be similar. I have to find a difference.

asked by Amy~ on September 14, 2010
81. Math

Find three pairs of numbers for which the LCM (least common multiple) is the product of the two numbers; The pairs and LCMs are: 8 and 12: 24; 3 and 15: 15; 7 and 11: 77; 9 and 10: 90; 24 and 36: 72; 20 and 25: 100; 14 and 42: 42; 30 and 12: 60

asked by Kevin on September 17, 2014
82. math

A line L1 passes through point (1, 2) and has gradient of 5. Another line L2, is perpendicular to L2 and meets it at a point where x = 4. Find the equation for L2 in the form of y = mx + c

asked by kudu on February 20, 2015
83. Religion

Can you cite some website where I can find examples of false prophets all over the world. The examples of the prophets must be above the years of 2000

asked by Kiper on February 2, 2012
84. algebra

The base of a triangle is 4cm greater than the height the area is 48cm^2 find the height and the length of the base

asked by Anonymous on October 5, 2008
85. Math

A pair of shoe was sold for rs 704 after allowing a discount of 12% on market price. Find the market price?

asked by Anonymous on July 11, 2017
86. Physics

A car is traveling due east at 25.0 m/s. If it accelerates at 0.750 m/s^2 due east find it's velocity after 8.50 s have elapsed.

asked by Duane on February 3, 2012
87. chemistry

Find the volume in liters. 6.5kg of a substance with a density of 7.96g/mL Im confused about how it would come out in liters.. if the mass is in kg and the density is in g/mL

asked by tammie on March 5, 2011
88. math

two fifth of a pole is in the ground 0.125 is in the water and 4.75m is above water-find the length of the pole how can i solve such problem "4.75 m "

asked by nas on June 18, 2010
89. physics

from circuit R1 6680 ohm R2 680 ohm R3 330 ohm R4 180 ohm find the total resistance

asked by ali on October 27, 2015
90. science

Two point charges 8q and -2q are located at x=0 and x=l find the location on the x axis where electric field due to these two point charges is zero

asked by Prasoon on May 25, 2011
91. Calculus

For the demand function find the elasticity function. Problem 52. p=D(x)=18-Sqrt[x] My answer is [-36x^1/2 + 2x]/x However, the answer in book is [-2(18-x^1/2)]/[x^1/2]

asked by Sarah on December 10, 2007
92. physics

a 5cm bulet move 500ms^1 Penetrates 5cm wood and stop find time of stop

asked by Sazirul on January 16, 2017
93. Algebra 2!!!!

Use the graph to shorten the list of possible rational zeros of the function. Then find all real zeros of the function. 1.) f(x)= 4x^3-8x^2-15x+9 4.) f(x)= 2x^3-5x^2-4x+10

asked by Sam on February 2, 2015
94. math

I can't find the variable and expression for the poulation of oakland. Here's something to help you with Oakland, California is 5,417 less than the poulation of omaha, nebraska.

asked by Bob on September 8, 2010
95. Calculas

The profit obtained when x barbecues are sold is P(x) = 100 x − 3x^2 (lnx) dollars . Find the marginal profit when 4 are sold.

asked by jake on April 4, 2014
96. Algebra

Can someone help me with this equation? The length of a rectangle is (2x+3) and the width is (x-6). Write the equation and solve to find the value of x if the perimeter of the rectangle is 90 centimeters.

asked by Joseph on September 8, 2016
97. math

1-show that 1-x/2 is the tangent line approximation to 1/ sqrt of 1+x near x=0 2-what is the local linearization of e^x^2 near x=1 3-find the tnagent line approximation of 1/x near x=1

asked by piper on March 31, 2010
98. calculus

how do you find the derivative of (X^2(2+x^1/2))/x^4. I'm confused because of the exponents rules. please show me the steps in simplifying the exponents then taking the derivative.

asked by jennifer on October 23, 2007
99. algebra

consider the function f(x)=9/x and g(x)=9/x find f(g)x))and any values that may be excluded what is g(f(x)) and any values that may be excluded and functions f and g inverse of eachother please show work

asked by ALLI on September 5, 2012
100. Maths

Find the denominator n of the rational number kn (k,n are both integers) such that ∣Root 2 - k/n∣ is the smallest possible, out of all rational numbers with denominator less than 1000?

asked by ABCD on May 29, 2013