find the derivative of y=(3x+1)^2 y= square root 13x^2-5x+8

97,722 questions, page 833
1. Calculus II: Finding the volume of a revolution

Question: Find the volume of revolution bounded by y-axis, y=cos(x), and y=sin(x) about the horizontal axis. Since the rotation is happening at the horizontal axis, I thought the limits of integration would be [-1,1] and if the curves are rotated they

asked by Luna on April 9, 2017

How do you find the domain and range of an equation? Since this is not my area of expertise, I searched Google under the key words "domain range equation" to get these possible sources:

asked by carter on August 28, 2006
3. Physics 12

First question I'm having trouble with: -An arrow is shot at a target 60m away (horiz), and 24m high (vert) - [picture of uneven trojectary is given] Find the arrow's initial speed. Second one goes something like this: - Car is traveling 170km/h down a

asked by Joe Seppe on March 25, 2008
4. Mechanics, Rigid body

At t = 0 s a flywheel is rotating at 20 rpm. A motor gives it a constant acceleration of 1 rad/s^2 until it reaches 100 rpm. The motor is then disconnected. How many revolutions are completed at t = 21 s? What I've done so far is multiply my 20rpm and

asked by Marissa on December 14, 2014
5. Physics

Two masses m are attached to two vertices of an equilateral triangle made of three massless rods of length l. A pivot is located at the third vertex, and the triangle is free to swing back and forth in a vertical plane. If it is initially released from

asked by Anonymous on October 10, 2012
6. Math

you have a piece of wood that is 144 inches long. you cut it into three pieces. the second piece is 12 inches longer than the first piece. the third piece is 12 inches longer than the second piece. write and solve the equation to find the lengths of the

asked by Mark on September 15, 2015
7. math

A map distance of 5 inches represents 200 miles of actual distance Suppose the distance between two cities on the maps 7 inches.What is the actual distance between the two cities?Write the rule you used to find the actual distance.

asked by Shakayla on February 24, 2014
8. college

A spaceship lands on the planet whose radius is 5 times that of planet earth and whose mass is 25 times that of planet earth. Find the apparent weight of the astronaut on the second planet if the astronaut weighs 150lbs on planet earth

asked by Antonio on November 1, 2010
9. algebra

​120 inch length of ribbon is to be cut into three pieces. The longest piece is to be 40 inches longer than the shortest​ piece, and the third piece is to be half the length of the longest piece. Find the length of each piece of ribbon.

asked by Maria on September 5, 2017
10. algebra

the speed of train A is 8 mph slower than the speed of train B. Train A travels 220 miles in the same time it takes train B to travel 260 miles. Find the speed of both trains. Speed of train A = Speed of train B =

asked by pam on November 12, 2012
11. Research

I need to do a report on miscegenation. I need to know: the beginning of these laws, what the law states (past & Present), the punishment given to those who broke them, and the abolishment of these laws. Please can someone give me a website to look up

asked by SW on November 12, 2006

explain the connection between european exploration of north and south amwerica and international trade? is there any connections to begin with? Is it, South Americais geographically bordered on the west by the pacific ocean and wast by countries including

asked by Bobby on September 15, 2010
13. Finance

Veggie Burgers, Inc., would like to maintain its cash account at a minimum level of $246,400; but expect the standard deviation in net daily cash flows to be$13,600; the effective annual rate on marketable securities to be 4.8 percent per year; and the

asked by Hans on May 15, 2010
14. Nutrition

I am in need of some help on finding a article with the following could someone please help me find an article related to one of the following topics: o The role of protein in hormone/enzyme functions o How protein assists with immunity o The protein needs

asked by Ann on October 16, 2008
15. classroom instruction

compare and contrast approaches for teaching English language arts in a constructivist classroom and in a traditional classroom. can you help me find some info please.this is what i have so far but i am not sure if it is correct. Constructivism is a view

asked by scooby on March 5, 2010
16. anti-derivative help!!

Given f"(x)=-8sin3x and f'(0)=-1 and f(0)=-6. Find f(pi/5). i got stuck with f(pi/f) f"(x)=-8sin3x f'(x)=8cos3x+c f'(0)=8cos3(0)+c=-1 c=-9 f'(x)=8cos3x-9 f(x)=-8sin3x-9x+c f(0)=-8sin3(0)-9(0)+c=-6 c=-6 f(pi/5)-8sin3(pi/5)-9(pi/5)-6. so am i right?

asked by lindsay on April 14, 2012
17. geometry

The length of one base of a trapezoid is 19 meters and the length of the median is 23 meters. Find the length of the other base.

asked by Shaquaya on November 17, 2010
18. Algebra

Find 5 consecutive whole numbers if it is known that the sum of the squares of the first 3 numbers is equal to the sum of the squares of the last 2 numbers.

asked by Sam on December 6, 2018
19. Maths

If alpha and beta are zeros of a polynomial f(x)=x squared -6x+k find value of k such that alpha squared + beta squared =40

asked by Arjun on September 1, 2016
20. algebra

Find the variation constant and an equation of variation where y varies directly as x and y =4 when x=1. the variation constant is K= the variation constant is y =

asked by plz hlp on June 3, 2012
21. Geometry

The measure of an angles supplement is 76 less than that the measure of the angles. Find the measure of rhe angle and its supplement?

asked by ashley on October 8, 2015
22. math

one number is greater than 3 times the other number by 3. Four times the smaller exceeds the greater by 2 find the number.

asked by ashish on November 11, 2015
23. Algebra

The length of a rectangle is 6 inches more than twice its width. If the perimeter of the rectangle is 54 inches, find the width of the rectangle.

asked by JoAnn on July 22, 2008
24. Algebra

Two apples and three pears cost $3.45. Three apples and five pears cost$5.55. Find the cost of each type of fruit.

asked by KevinJ on February 27, 2014
25. algebra

the length of a rectangle is three meters more than the width. The perimeter of the rectangle is 34 meters find the width of the rectangle.

asked by Kenshin on June 19, 2016
26. Mathematics

If the sixth term of an A.P is 37 and the sum of the first sixth term is 147.find the first term and the sum of the first 15 terms

asked by Olajumoke on October 15, 2018

The sale price of a coat is 40% off it's regualr price of $59.50. Which equation can be used to find s, the sale price of the coat? A. S= 59.50 - 59.50(0.40) B. S = 59.50 + 59.50(0.40) C. S= 59.50 - 59 50(0.60) D. S=59.50 + 59.50(0.60) asked by lilly on November 11, 2010 28. math Wayne will get$4200 if his salary is increase by 20%.Wayne's salary is 40% less the barry.Find Barry's salary.

asked by Anonymous on April 28, 2013
29. geometry

Given: ∆AKL, AK = 9 m∠K = 90o m∠A = 60 ° Find: The perimeter of ∆AKL The area of ∆AKL for this one i got 81 for the perimeter side a 6 and side b is 12

asked by Allie on February 17, 2017
30. help with math

Find the unknown value in the percent proportation part/whole = percent/100 part is 5 and percent is 4 5/whole = 4/100

asked by annyomouse on July 22, 2008
31. Geometry

The length of one base of a trapezoid is 19 inches and the length of the median is 16 inches. Find the length of the other base.

asked by Alice on March 22, 2013
32. Math

The greater of two numbers is 1 less than three times the smaller. If 3 times the greater is 5 more than 8 times the smaller, find the number.

asked by Karen on October 14, 2009

Wayne will get $4200 if his salary is increase by 20%.Wayne's salary is 40% less the barry.Find Barry's salary. asked by Annabel on April 28, 2013 34. Algebra II What is the solution of the system of equations? {-3x - 4y - 3z = -7 {2x - 6y + 2z = 3 {5x - 2y + 5z = 9 A. (5,-2,7) B. (-5,2,7) C.(5,2,-7) D. No solution Use a matrix to find the solution to the system of equations. {-8x - 8y = -16 {6x - 9y = -108 asked by HELPME on September 27, 2018 35. Maths (quadratic equation) need help The altitude of a triangle is 3 less than twice its base.The area of the triangle is 10m^2. Find the altitude and base of the triangle. asked by Sama on May 31, 2016 36. Geometry$M$is the midpoint of$\overline{AB}$and$N$is the midpoint of$\overline{AC}$, and$T$is the intersection of$\overline{BN}$and$\overline{CM}$, as shown. If$\overline{BN}\perp\overline{AC}$,$BN = 12$, and$AC = 14$, then find$CT$. asked by DenisGylaev on June 28, 2016 37. math you spin a 6 section red spinner and a 6 section blue spinner. Find P(red less than 4 and a red 2). asked by help me on May 5, 2016 38. math help!! the first term in a geometric series is 4 and the sum of the first three terms of the series is 64. find the sum of the first eight terms of the series. asked by nikki on December 16, 2014 39. Math What is the sum of the first 16 terms of the AS 11,15,15,33...? Find the last term of the general term and S16. A. An B. General term C. S16 asked by Mila on August 30, 2018 40. Algebra three apples and four bananas cost$4.85,three apples and ten bananas cost $8.75, find the cost of an apple asked by jonathon on January 31, 2011 41. math Wayne will get$4200 if his salary is increase by 20%.Wayne's salary is 40% less the barry.Find Barry's salary.

asked by Annabel on April 28, 2013
42. geometry

YW bisects angle XYZ. m of angle XYW = (2x + 7)degrees and m of angle XYZ = (6x - 8)degrees. Find the value of 'x'.

asked by Mekolily on November 28, 2011
43. Algebra

How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution?

asked by Laura on September 30, 2008
44. Pre Calculus

Find all $2 \times 2$ matrices $\bold{A}$ that have the property that for any $2 \times 2$ matrix $\bold{B}$, $\bold{A} \bold{B} = \bold{B} \bold{A}.$

asked by Bob on September 20, 2017
45. geometry

for triangle ABC find the measure of AB given measure of angle A=55 degrees, measure of angle B=44 degrees, and b = 68

asked by Buddy on March 29, 2016
46. geometry

if angle aob=4x+15 and aoc=3x+25, find the degree measures of angle aob and angle aoc

asked by cecilia on January 24, 2012

Find three decimals between each of the following pairs of decimals: A: 4.333333333(repeating 3) and 4.3 B: 203.76(repeating 7,6) and 203.7(repeating 7)

asked by KG on October 27, 2014
48. math

two records and three tapes cost $31.three records and two tapes cost$29 .find the cost of each record and each tape

asked by geeh mommah on March 23, 2012
49. Math

The area of a playground is 50 yd^2. The width of the playground is 5 yd longer than its length. Find the length and width of the playground.

asked by Anonymous on January 10, 2017
50. Algebra

Two apples and three pears cost $3.45. Three apples and five pears cost$5.55. Find the cost of each type of fruit.

asked by BrianP on March 2, 2014
51. Math

There are two rectangles that are similar. One rectangle has an area of 24 and the other has an area of 15 how do you find the ratio of the area of the first rectangle to the area of the second rectangle?

asked by Jordan on September 21, 2016
52. Algebra 2

The Denominator of a fraction exceeds the numerator by 4. When 3 is added to both the numerator and denominator, the fraction becomes 4/5. Find the fraction.

asked by Larry on October 10, 2012
53. ALGEBRA-MAT117

How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution?

54. math

how do you find the ratio and percent of the ratio...14 students out of 29 are boys. what is the ratio for girls and the percent of girls.

asked by Miracle on October 22, 2015
55. maths

the denominator of a fraction is 1 less than 4 times a numerator.if 1 is added to both the numerator and the denominator the fraction becomes 3/8.find the fraction

asked by meera on September 13, 2017
56. ALGEBRA 2

Find the function rule for g(x). The function f(x) = x2 . The graph of g(x) is f(x) translated to the right 8 units and down 7 units. What is the function rule for g(x)?

asked by KEN on December 13, 2016
57. Math

The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm , find the mean height of 20 boys

asked by Tayyab on January 9, 2019
58. Math.

The first term of a geometric series is 4 and the sum of the first three terms of the series is 64. Find the sum of the first eight terms of the series.

asked by Tom on January 8, 2014
59. Maths

The numerator of a fraction is 2 less than its denominator. If 3 is substracted from the numerator and from the denominator, the new fraction obtainded is 3/4. Find the fraction

asked by Deron on January 26, 2015
60. algebra

Four pears and two apples cost $1.96. Three apples and three pears cost$2.10. Find the cost of 1 apple and 1 pear.

asked by brooke on January 24, 2010
61. College Algebra

The perimeter of a rectangle is 72 feet. The length of the rectangle is twice the width. Find the length and width of the rectangle.

asked by Anonymous on September 1, 2017
62. ALGEBRA

How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution?

63. Geometry

If the measures of the exterior angles of the acute angles of a right triangle are (6x+23) and (4x+17), find the measures of the acute angles.

asked by Rosa on October 5, 2011
64. maths --plse help me..

A bacteria culture has an initial population of 600. After 4 hours the population has grown to 1200. Assuming the culture grows at a rate proportional to the size of the population, find the function representing the population size after t hours and

asked by Anonymous on December 28, 2012
65. Helping Abused children

Please help 4. As a teacher aide, if you report an incident of child abuse, A. you must be able to prove your allegations to the authorities. B. you’ll most likely be asked to testify in court. C. you should keep all information related to the case

asked by beth on August 3, 2011
66. math word problems

Package A weighs half as much as Package B. Package B weighs four times as much as Package C. The total weight of Package A and Package C is 648 grams. Find the weight of Package B.

asked by Jiskha on March 23, 2014
67. social studies

Where can I find information on: "What products might we get from the seven major regions of the United States?" (Great Lakes, Mountain, Southwest, Northeast, Plains, Pacific, Southeast) This encyclopedia article discusses the regions of the U.S. The

asked by Kendra on June 13, 2007

A share of preferred stock of MXT Ltd. is expected to pay $1.5 per quarter into indefinite future. The current annual expected rate of return (k) is 12%. Suppose that an investor buys 10 shares today and holds them for two years. Find his/her cash flows on asked by Barney on November 24, 2008 69. social and criminal justice Hello I have a 2 to 3 page paper due on Monday 11/14, 2011 and I am having trouble finding good reliable information to complete the assignment. The instructions are to: Prepare a paper identifying at least three changes expected in the field of criminal asked by Dee on November 11, 2011 70. Chemistry For chem we did a kinetics lab based on the rate of reaction of peroxydisulfate ion with iodide ion. I'm supposed to find the amount of S2O3 ^2- consumed for every trial (in moles) If someone could just explain how to do that with the information I asked by Anonymous on February 13, 2014 71. English I have a few more doubts on your corrections. Thank you!! 1) Is it wrong to say "wipe the blackboard with a duster" or is only "clean" possible? 2) "do a course" is a mistake? you can only say "take/attend a course? "take a tour, go on a tour, make a tour" asked by Henry2 on September 12, 2011 72. french i need help with my french wat does j'aime brien ma ville.Le weekend mon pere va au marche et vais au cinema mean i don't have a clue! please help Thank you for using the Jiskha Homework Help Forum. With the aide of a good paper-back dictionary (English to asked by hazel on February 28, 2007 73. psychology i'm trying to find strengths to a deep processing vs shalow processing investigation procedure: 1)class split in half 2)class given 10 mins to remember 24 words 3)each member given piece of paper to write down the words they could remember 4)results taken asked by simone on May 22, 2010 74. chemistry Care must be taken when diluting sulfuric acid with water, because the dilution process is highly exothermic: H2SO4(l) "arrow" H2SO4(aq) + heat a) Find the ÄHo for diluting 1.00 mol of H2SO4(l) (d = 1.83 g/mL) to 1 L of 1.00 M H2SO4(aq) (d = 1.060 g/mL). asked by patrick on October 23, 2015 75. Stats Suppose the following data are selected randomly from a population of normally distributed values. 42 51 43 48 41 57 54 39 45 48 45 39 46 Construct a 95% confidence interval to estimate the population mean. Round the intermediate values to 2 decimal asked by Tyler on December 19, 2013 76. Physics - Mechanics A small block of mass 1.2 kg is launched by a compressed spring with force constant k=600 N/m. The initial compression of the spring is 0.15 m. The block slides along a horizontal frictionless surface and then up an inclined plane that makes an angle asked by Anonymous on March 14, 2015 77. biology In an investigation to find the number of african potato plants in a field of area 6 000m^2 three plots were selected.each with an area of 10^2.Pot 1 contained three and the other plots contained seven and two african potato plans,respectively. 1.name two asked by nicole on October 16, 2015 78. History Please help! I'm trying to find some info. on Joseph Stalin, but what i've found doesn't seem to answer my questions. 2. What impact did the decisions and actions have on the leader responsible? Did their power increase or decrease as a result? Did they asked by mstv on April 22, 2015 79. Physics - Mechanics A small block of mass 1.2 kg is launched by a compressed spring with force constant k=600 N/m. The initial compression of the spring is 0.15 m. The block slides along a horizontal frictionless surface and then up an inclined plane that makes an angle asked by Anonymous on March 13, 2015 80. english or philosophy- came up with it myself Those who are happy (I thought) who have their minds fixed on some object other than their own happiness; on the happiness of others, on the improvement of mankind, even on some art or pursuit, followed not as a means, but as itself as an ideal end. Aiming asked by TayB on May 17, 2015 81. Chemistry Ok last question for now. Calcium is determined in limestone by precip. CaC2O4, dissolving precip. in H2SO4, and titrating with KMnO4. The precipitate from the limestone sample weighs .4463g requires 32.17mL of .1336 N KMnO4 for titration. Find percentage asked by CodyJinks on April 14, 2019 82. Physics A 32-u oxygen molecule (O2) moving in the +x direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at 27 degrees to the x axis. The particles stick together to form an ozone molecule. Find the velocity of the ozone. Express your asked by Jacob on April 13, 2009 83. English Can you please help me check the following prepositions? Thank you. 1) I was angry with her about her behaviour. 2) I was angry/furious/annoyed/cross with her for being late. 3) I'm sure about/of that. 4) Short of (I can't find a good example) 5) I was asked by Franco on October 12, 2010 84. Chemistry Care must be taken when diluting sulfuric acid with water, because the dilution process is highly exothermic: H2SO4(l) "arrow" H2SO4(aq) + heat a) Find the ÄHo for diluting 1.00 mol of H2SO4(l) (d = 1.83 g/mL) to 1 L of 1.00 M H2SO4(aq) (d = 1.060 g/mL). asked by patrick on October 23, 2015 85. math A printing company determines that to print a large format poster, it costs$75 to set up the production process. Each poster that is printed costs $22 in material and labor. The printing company sells these posters to marketing firms for$60 each. Find a

asked by Marie P. on August 19, 2014
86. Chemistry

One more problem with 1/2 reactions Pb(s) + PbO2(s) + 2H2SO4(aq)->2PbSO4(aq)+2H2O(l). How do you split them up with two Pb solids on the same side of the equation? Again you need to identify what is being reduced and what is being oxidised. I think I read

asked by amy on April 19, 2007
87. physics

Cheetahs can sustain speeds of 25 m/s over short distances. One of their prey is Thomson's gazelle, with top speed about 22 m/s. If a 52kg cheetah running southward at top speed grabs and holds onto a 23kg gazelle running westward at 22 m/s, find the

asked by blake on February 25, 2014
88. Engineering

If (y-2)hole power 3 = (y+2)hole power 3 then find the value of Y. a) -16 b) -4 c) O d) 4

asked by Hameed ullah on January 2, 2017
89. Math

given 'ray'v=(1, 2) and 'ray'w=(-2, -3) find the coordinates of 'ray'v+'ray'w

asked by Kylee on May 13, 2014
90. Math 116 algebra

Find the slope and the y-intercept f(x)=-3x -10 The slope is The y intercept is (0, )

asked by Mekhi on July 15, 2008
91. binomial expansion help!!!

in the expansion of (1+x)^(n+1) the coefficient of x^4 is 6k and in the expansion of (1+x)^(n-1) the coefficient of x^2 is k.find the value of k and n, for n>2???

asked by collins on March 19, 2016
92. trig

find the value of x when: x= 5 log base 2 (1/16)+ 8 log base 3 (27)

asked by pat on August 26, 2011
93. Trigonomentry help!!!

SinA+ cosA=17/3 find sinA-cosA

asked by Phum on January 18, 2016
94. algebra

find the slope and the y intercept y=3.1x-9 the slope is the y intercept is help thank you

asked by help on December 20, 2009
95. college algebra

Part a 3x + 4y = 8 for y answer is -4 Using your answer from part a, find the corresponding value of y when x =8.

asked by tondra on November 16, 2008
96. Maths

If the lcm of first 20 natural no. is x then find the lcm of first 25 natural no.

asked by Simmi on May 21, 2017
97. Math

Let y=cos x+sin x/cos x -sin x. Find dy/dx

asked by Anonymous on October 12, 2012
98. maths

let the harmonic mean of two numbers x and y be 9.find the harmonic mean of the four numbers x,y,2x,2y

asked by john on March 30, 2017
99. show low high school

he first number is 3 more than the second number. the sum of the number is 25. find the number.

asked by joey on November 4, 2016
100. math

find the inverse of each function. is the inverse a function? 1) f(x)=-2x+9 2) f(x) x^2+2

asked by lisa on March 11, 2013