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

97,722 questions, page 821
1. Writing Sources

I am trying to prove why I think parents having a child reduces their rate of commiting a crime. My basic reasoning is that most parents love their new child and start to realize that they need to better their life in order for their childeren to have the

asked by Rebekah on October 26, 2017
2. Chemistry

Here's a molar heat problem I just have one question on. How much heat will be transferred if 2 moles of hydrogen reacts with excess oxygen according to the reaction below? 2H2 + O2 yields 2H20 + 572 kJ The answer according to my answer key is 2 mole H2 x

asked by Tabetha on May 18, 2009
3. Math, Trig/Pre Calc

You have been asked to build a ramp for Dan’s Daredevil Motorcycle Jump. The dimensions you are given are indicated below. Find the height and incline in feet. Round to the nearest foot One side is 200 ft.The angle between the hypotenuse and the side of

asked by Sarah Blanchard on October 24, 2014
4. calculus

(Use the fact that the kinetic energy of a particle of mass "m" moving at speed "v" is (1/2)m(v^2). Slice objects into pieces in such a way that the velocity us approximately constant on each piece.) Q: Find the kinetic energy of a rod of mass 10kg and

asked by mike on October 28, 2012
5. English

Can you check the meaning of these few phrasal verbs, please? Thank you In the beginning I dislike my classmates but then I came around thinking they aren't so bad. Can you drop in on me after school. I need to talk to you. My plan to go to the mountains

asked by Henry1 on May 11, 2011
6. physics

найти среднюю длину свободного пробега молекулы кислорода при нормальном давлении, если коэффицент диффузии кислорода при том же давлении

asked by lisa on May 29, 2011
7. Algebra

nicole is a jewellery designer. she handcrafts all the jewellery she sells online. with every successful sale, she would make a profit of $30; however, if she makes a mistake during the process, she will lose$10. Nicole is starting work on her next batch

asked by Michelle on June 15, 2016
8. Math

water accounts for about 60% of a person's body weight. a. write an equation that represents the water y of a person who weights x pounds. identify the independent variable and the dependent variable. b. make an input-output table for the equation in part

asked by Jacob on February 9, 2018
9. math

Use the information below to write and simplify an expression to find the total weight of the medals won by the top medal-winning nations in the 2012 London Olympic Games. The three types of medals have different weights. U.S.A. Gold=46 Silver=29 Bronze=29

asked by Sam on February 24, 2015
10. Physics

A 6 kg rock is suspended by a massless string from one end of a 6m measuring stick. What is the mass of the measuring stick if it is balanced by a support force at the 1m mark? answer in units of kg. Thanks for any help Rather than just posting the

asked by Stu on April 26, 2007
11. math

Let's say you are standing on top of a mountain looking down at the valley below, where you can see cars driving on a road. You stretch out your arm, use your thumb to "sight" a car, and find that the car appears to be as long as your thumb is wide.

asked by Chelsea on November 11, 2012

You conduct a survey of a sample of 25 members of this year’s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this

asked by gail on September 9, 2009
13. English

Identify the main conflict from "the fall from the house of usher " and show what it reveals about the story's protagonist . I have studied this story and I'm not able to find one main conflict, I have found a couple but none add up to the point of what it

asked by Michele on September 20, 2016
14. Physics

A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the

asked by Brandon on October 29, 2008
15. physics work and energy

A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above

asked by Anonymous on June 8, 2011
16. Physics

A calorimeter with specific heat of 490x10^2J/kg^1K^1 has a mass of 2.00x10^-1kg that contains 3.00x10^-1kg of liquid water at 40C. If 5.00x10^-2kg of ice at 0C is dropped into the water. Find the final temperature of the mixture where the ice has melted

asked by Tsunayoshi on February 9, 2014
17. Algebra

Consider the equation 4x^2 – 16x + 25 = 0. (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one real-number solution, two different real-number solutions, or two different imaginary-number solutions. (b) Use the

asked by Pamela on July 7, 2009
18. uh manoa

A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above

asked by luis on June 8, 2011
19. Physics

A 1300 kg El Camino is parked on a 20 degree hill.(20 degrees above x axis)The driver of the El Camino returns, starts the car, and accelerates up the hill at 2 m/s^2. Find Sigma-Fx and Sigma-Fy. What is the normal Force acting on the car, and what is the

asked by Jose Luis on October 12, 2015
20. Algebra

Consider the equation: 4x^2 – 16x + 25 = 0 (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one real-number solution, two different real-number solutions, or two different imaginary-number solutions. (b) Use the

asked by Tammie on July 8, 2009
21. Science

a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to

asked by Anonymous on July 7, 2017
22. math

Can someone help me figure this out. The difference of two numbers is 80. The second is 8 less than 5 times the first. What are the two numbers? first write an equation 5x-8=y and then solve it Tiff gave you part of the solution. 5x-8=y However, there is

asked by jessica on May 7, 2007
23. Physics

A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the

asked by Brandon on October 14, 2008
24. physic

A box of mass 2 Kg lies on a rough horizontal floor with the coefficient of friction between the floor and the box being 0.5 (Figure 3). A light string is attached to the box in order to pull the box across the floor. If the tension in the string is TN,

asked by zainab on March 25, 2014
25. math

(please explain with brief explanation) The area of a rectangular field is 2000 sq.m and its perimeter is 180m. Form a quadratic equation by taking the length of the field as x and solve it to find the length and breadth of the field. the length and

asked by Nithin on September 2, 2014
26. Statistics

A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3 kilometers per liter. i) Assuming that the kilometers per liter given by all mid-sized cars have a normal

asked by Nesa on May 11, 2012
27. Physics

3. Think about this pulling scenario: A 60 N force pulls three boxes across a surface with no friction. T1 is the tension force the rope on the left pulls with at both ends, and T2 is the force the rope on the right pulls with on both ends. (a) Draw

asked by Ke on March 4, 2015

You conduct a survey of a sample of 25 members of this yearï¿½s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this

asked by Shari on June 12, 2010
29. Physics

a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to

asked by Anver on July 7, 2017
30. Physics

A rescue helicopter lifts a 70 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 9 m.  What is the tension in the cable?  How much work is done by the tension

asked by Jennifer on February 22, 2015
31. physics

A 0.101 kg meter stick is supported at its 40 cm mark by a string attached to the ceiling. A 0.68 kg object hangs vertically from the 6.61 cm mark. A second mass is attached at another mark to keep it horizontal and in rotational equilibrium. If the

asked by Lor on February 8, 2012
32. Physics

A 5.50-kg ball, moving to the right at a velocity of +2.35 m/s on a frictionless table, collides head-on with a stationary 7.60-kg ball. Find the final velocities of the balls if the collision meet the following conditions. (a) elastic 5.5-kg ball =

asked by Anonymous on March 26, 2013
33. Current Events

Where would be a good place to find a current event article that I can follow from now til about Dec.? Thanxs for any help. Any newspaper, newsmagazine, and/or their websites would be good. http://www.latimes.com http://www.nytimes.com http://www.chron.com

asked by Soly on August 29, 2006
34. math

In Ali garden, he wants to build a concrete fountain. So he consults two different companies who provides concrete pours: Alibaba's Concrete (charges $700 plus$20/m^3 of concrete) and Baborina's Concrete ($1200 plus$15/m^3 of concrete). Let x be the

asked by doni on May 17, 2017
35. Physics

A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the

asked by Brandon on October 15, 2008

You conduct a survey of a sample of 25 members of this year’s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this

asked by joi on March 11, 2010
37. physics--HELP

a giant robot tosses a ball up, from a height of 80 meters, with an initial velocity of Vo = 60 m/s, use 10 m/s^2 as the acceleration due to gravity. what will be the minimum velocity of the ball and when and where will that occur? [i don't know how you

asked by jel on October 9, 2007
38. physics

a small bead can slide without friction on a circular hoop that is in a vertical plane and has a radius of 0.100 m. The hoop rotates at a constant rate of 3.00 rev/s about a vertical diameter. Find the angle beta at which the bead is in vertical

asked by bob on October 24, 2011
39. Statistics

Suppose that in the city in which the survey is conducted, 50% of adults are married, 15% are single, 25% are divorced, and 10% are widowed. a. Assign probabilities to each simple event in the sample space. b. Which approach did you use in part (a)? Find

asked by XYZ on February 4, 2016
40. Physics

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20.0 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 83.9 m), the block swings

asked by Thien on October 6, 2012
41. physics

The curves on a race track are banked to make it easier for cars to go around the curves at high speed. Draw a free-body diagram of a car on a banked curve. From the motion diagram, find the direction of the acceleration. (a) What exerts the force in the

asked by max on November 30, 2010

The question is Is the point (-3, -2) a solution of the intersection of the following set of quadratic equations: Y < -X^2 X^2 + Y^2 < 16 I guess I am somewhat confused by the way it's written. Would I be graphing this to find out? I'm so confused with

asked by Greg B. on June 12, 2012
43. math

A watch with a list price of $889.00 is sold by a wholesaler at a net cost of$545.75. Find the single trade discount rate being offered. round to the nearest tenth of a percent To solve this i did 545.75 divided by 889.00 that gave me 0.61389 which comes

asked by David on February 26, 2015
44. Math

The prompt for this question is f(x) =sin(x^2) A)A. Write the first four terms of the Maclaurin series for f(x) B)Use the Maclaurin series found in Part A to approximate the integral from 0 to 1 of sin(x^2) dx C)C. How many terms are needed to find the

asked by Anon on February 3, 2018
45. Physics

A truck travels beneath an airplane that is moving 100 km/h at an angle of 49 degrees to the ground. A) how fast must the truck travel to stay beneath the airplane? Answer in units of km/h The answer I got was 65.6 km/h, but i just wanted to make sure

asked by bubba on August 26, 2009
46. physics

A 65 kg water skier is pulled up a 15° inclined by a role parallel to the incline with a tension of 500N. The coefficient of kinetic friction is .25. What are the magnitude and direction of the skier's acceleration? I found the weight its 637.65 I found

asked by Lilie on November 9, 2014
47. Technology

Which of the following is true about filters in Microsoft® Excel databases? A. Filters sort information in alphabetical order. B. Filters create fields that describe the remaining data. C. Filters make it easier to find specific information in a large

asked by Bro on January 10, 2019

Hopefully someone can help me with this. "Suppose the production of airframes is characterized by a CES production function: Q=(K^0.5 + L^0.5)^2 (MPL = (K^1/2 + L^1/2) /L^1/2), MPK = (K^1/2 + L^1/2) /K^1/2) Suppose that the price of labor is $10 per unit asked by Jessica on May 17, 2010 49. Two English Questions (HELP!!) 1. Which of the following uses a pronoun in the possessive case? A. Ask Sarah to pass the chips to me. B. Check for my signature on the front page. C. He went to the park to find the dog. D. The winner of the contest was she. I think 1. is B. 2. Revise the asked by * on February 3, 2015 50. Chemistry You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa). a) Find the pH of the benzoic acid solution BEFORE adding the salt. b) Use the asked by Lacy on February 13, 2013 51. Chemistry You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa). a) Find the pH of the benzoic acid solution BEFORE adding the salt. b) Use the asked by Lacy on February 13, 2013 52. calculus Could someone help me et up this problem? Two people start from the same point. one walks east at 3mi/h and the other walks northeast at 2mi/h. How fast is the distance between the poeple changing after 15 minutes? I think this is what I would do::: First asked by Anonymous on March 30, 2009 53. math Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 60 people. (You may need to use the standard normal distribution table. Round your answers to the nearest asked by Anonymous on December 3, 2013 54. art Using Internet resources, find one example of installation art. Describe the artwork you have found, including the title, artist, year created, and where it is installed. What is the meaning of the work? How does the meaning relate to what the artist has asked by Anonymous on August 16, 2012 55. Chemistry Describe how you can show that a chemical reaction adhers to the law of conservation of mass. Chemical reaction: magnesium hydroxide added to phosphoric acid produces magnesium phosphate and water. Find the mass percentage of each compound as well as the asked by Jessica on December 10, 2008 56. Math I need help with these 3 problems. 1. An amusement park charges admission plus a fee for each ride you go on. 2 admissions and 5 rides cost$22. 2 admissions and X rides cost $24. What is the charge for 1 admission and the charge for 1 ride. 2. Find the asked by Jessica on June 28, 2010 57. 11th grade The curves on a race track are banked to make it easier for cars to go around the curves at high speed. Draw a free-body diagram of a car on a banked curve. From the motion diagram, find the direction of the acceleration (a) What exerts the force in the asked by max on November 30, 2010 58. physics The curves on a race track are banked to make it easier for cars to go around the curves at high speed. Draw a free-body diagram of a car on a banked curve. From the motion diagram, find the direction of the acceleration (a) What exerts the force in the asked by max on November 30, 2010 59. Math The sum of the ages of a father and a his son is 72 years. After 2 years, father will be 4 years less than 3 times the age of his son. Find their present ages. asked by Koyal on May 21, 2016 60. physics velocity of light in air and glass are 3.0*10^8m^-1 inverse 1.8*10^8m^-1 respectively one is for air and one is for glass. find the angle of refraction in glass. if the light travel from air to the glass.? asked by poppy👌🤔 on May 5, 2019 61. math Chalk contains calcium,carbon and oxygen in the ratio 10:3:12.Find the percentage of carbon in a chalk and in a stick of chalk, carbon in 3g what is the length of chalk stick? asked by Ashish on October 3, 2016 62. coordinate geometry Find the equation of the locus of a moving point such that the slope of the line joining the point to A(1,3) is three times the slope of the line joining the point to B(3,1). asked by javaria on May 9, 2016 63. Algebra Find an equation of a line parallel to the given line and contains the given point. Write the equation in slope-intercept form. a. line 2x+3y=2 , point (0,0) b. line y+4=0, Point (-5,3) asked by Keonn'a on September 12, 2017 64. GP Caluculus The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression asked by Watermelon on December 1, 2011 65. math The larger circle has a radius that is 18 inches longer than the smaller circle. The larger circle has a circumference that is A pi feet larger then the smaller circle. find the value of a. asked by dan on March 15, 2011 66. Astronomy Mercury has an orbital eccentricity of 0.21. Find the perihelion and aphelion distances of Mercury. What is the ratio of Mercury's orbital speed at perihelion to that at aphelion? asked by Sue on March 24, 2008 67. Statistics For sample mean x = 150, sample size n = 36 and sample standard deviation s = 40 find 80% confidence interval for population mean. Population standard deviation is not known asked by Tina on February 24, 2012 68. GP Caluculus The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression asked by Watermelon on December 1, 2011 69. Math A boy is 42 years younger than his father .In 8 years' times , he will be 1/4 times as old as his father .Find their present ages. (Answer is boy= 6, father= 48) asked by Sam on October 10, 2017 70. maths the ones digit of 2-digit number is twice the tens digit when the number formed by reversing the digit is added to the original number . The sum is 99 . find the original ? asked by shipra on January 31, 2016 71. math A plane traveled 510 mph with the wind and 470 mph against the wind. Find the speed of the plane in still air and the speed of the wind asked by QUIZ HELPPP on September 27, 2016 72. algebra find two numbers such that if 7 is added to the greater the answer is four times the smaller number, while 28 added to the smaller number is equal to twice the greater number. asked by fatimah on July 9, 2014 73. Math The formula for the volume of a cube is V equals S3 where X represents the side length of the cube find the volume of a cube with side length of 0.5 millimeters asked by James on February 6, 2017 74. 8th science An object that weighs 3N displaces 280 mL of water which weighs 2.8 N. What is the buoyant force on the object? Please help, idk how to find the buoyant force of an object thanks:D asked by brianna on February 18, 2009 75. MATH se a graphing calculator or Excel to find the solution of the system of equations. (If the system is dependent, enter DEPENDENT. If there is no solution, enter NO SOLUTION.) 5x + 3y = 2 3x + 7y = −4 asked by RICH on March 2, 2017 76. Algebra the denominator of a fraction exceeds the numerator by 7, if the numerator is increased by 3, and the denominator is increased by 5, the resulting fraction equals 1/2. Find the original fraction. asked by Scotch on March 22, 2016 77. Trigonometry 1) If P'(2,-6) is the image of point P after the dilation D(to the 2nd power), what are the coordinates of point P? 2) A transformation maps (x,y) onto (x+2, y-1). Find the coordinates of A', the image of point A(-2,6) under the same transformation. asked by Tyler on February 24, 2010 78. GP Caluculus The third term of a geometric progression is 16. The sum of the third term and the fourth term is 8.Find (a)the first term and the common ratio of the progression. (b)the sum of infinity of the progression. asked by Watermelon on December 1, 2011 79. Math Use linear approximation, i.e. the tangent line, to approximate sqrt[3] { 8.4 } as follows: Let f(x) = sqrt[3] x. The equation of the tangent line to f(x) at x = 8 can be written as y=mx+c where m=1/12 b=4/3 find the approximation for sqrt[3] {8.4} asked by Ben on November 8, 2009 80. Math Find the mean. median and mode(s) of the data. (DONE) Choose the measure that best represents the data. Explain your reasoning. (WHAT?!?) 1. Mean: 28.5 Median: 33.5 Mode: 35 2. Mean:37 Median:43 Mode:No mode asked by Mathmatic on November 18, 2012 81. algebra 1 NEED NOW!!! PLEASE HELPPP The height of a curved support beam can be modeled by F(x)=- x^2/288 +18 Find the height and width of the beam. Height = units Width = units asked by lisa on July 1, 2013 82. algebra two angles are complementary. the sum of the measure of the first angle and half the second angle is 87 degrees. find the measure of the angles. What is the measure of the smaller angle? what is the measure of the other? asked by ron on March 28, 2010 83. 4th grade math Jason and Jessica had an equal number of dollars.After Jessica gave$50 to Jason, he had 5 times as many dollars as her.Find the total number of dollars they had.

asked by Alaya on January 18, 2012
84. Calculus

Suppose you have a rational function that its denominator is (X-c) and numerator can be any function. Suppose you need to find the limit of this rational function given as x goes to value c. Can you always say that for this problem the limit does not

asked by Cody on January 22, 2012
85. Physics

A body of mass 20 kg moving with a velocity of 80 m/s collied with another body mass of 5 kg moving with a velocity of 50 m/s. If they move together after colision. Find common velocity.

asked by Ujjal on September 24, 2014
86. Average

In a class 20% students failed 60% students scored average marks and the remaining above average marks find number of students in the class ?

asked by Rahul on May 6, 2016
87. Algebra

Find an equation of a line perpendicular to the given line and contains the given point. Write the equation in slope-intercept form. a. line 3x+y=5, point (-1,2) b. line y=3x+1, point (6,1)

asked by Keonn'a on September 12, 2017
88. Math

i have a question....say u have a point (15,-1) and you get it from doing a verticle compression by 1/2 and a verticle reflection...wat would the original point be? to find it you would have to undo the verticle compression and reflection from

asked by geena on October 25, 2009
89. value

Simple,interest,sum,for,5,year,at,8%,perannum,is,₹200,less,simple,interest,on,sum,for,3,years,and,4,month,at,18%,perannum,find,the,sum

asked by value on January 10, 2017
90. College Algebra

Let g(x) = x3 - 12x + 16. Find the location of the local minimum of this function (there is only one such location). Evaluate function g(x) at the x-value of the ordered pair location of this local minimum.

asked by Brianna on September 26, 2011
91. Physics

A rock is falling towards the Earth. Suppose the action force is the pull of the Earth on the rock. What is the reaction force? I do not know how to find the reaction force.

asked by Bryan on October 11, 2009
92. statistics

suppose that 70% of all college students love math. in a random sample of 8 college students, let x be the number of students who love math.find p(x=6)

asked by harry big on November 18, 2014
93. ssc..math

A tree 30 feet tall casts a shadow 7 feet at the same time that a flagpole casts a shadow 5 feet .Find the height of the flagpole .

asked by jonalyn on July 26, 2015
94. Algebra.

The sum of 6 times Jack's age and 5 times Larry's age is 63. Jack is 1 year less than 3 times as old as Larry. Find eachh of their ages.

asked by Leah on March 27, 2008
95. Math

The sum of age of asha and musa is 50 years.If ten years ago the age of musa was twice of asha find their present age

asked by Emaculate on August 30, 2015
96. maths

a box contains 20 fuses ,out of which ,5 are defective.if a sample of 3 fuses is chosen from the box at random without replacement,find the probability that x fuses in this sample will be defective

asked by ashely on February 11, 2012
97. Algebra

Find the largest possible real value of \sqrt{(x-20)(y-x)} + \sqrt{(140-y)(20-x)} + \sqrt{(x-y)(y-140)} subject to -40\leq x \leq 100 and -20\leq y \leq 200.

asked by John on March 12, 2013

In isosceles triangle DEF, DE=DF. Which of the following is true? 1)

asked by Laurie on February 23, 2010
99. Literature

what is the participle phrase in this sentence? Sandy was stunned to find she'd won the contest A. Sandy B. Stunned C. Won D. Contest I don't know but maybe its stunned...?

asked by meow meow kit kat on April 4, 2019
100. maths

A town's population increased by 1200 people,and then this new population decreased 11%. The town now had 32 less people than it did before the 1200 increase. Find the original population.

asked by Tejaswi on July 6, 2015