# find d/dx (integral from 2 to x^4) tan(x^2) dx tan(x^4)^2*4x^3 MY ANSWER

139,202 results, page 97
1. ## algebra

2. The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite in millions of years? 2) You need to show how you use the

asked by sara on June 14, 2009

I was wondering if I had number 2 correct; the only way to know the answer was to provide the entire answer for number 1. Thanks in advance. 1. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each asked by Ashli on June 5, 2008 3. ## Algebra: x and y intercept, someone check please 1. Find the x-intercept and the y-intercept of 8x - 2y = -24. a. x = -7, y = 2 b. x = -4, y = 14 c. x = -3, y = 12 d. x = 7, y = -2 answer: d 2. Find the x- and y- intercept of the line 2x + 3y = -18. a. x-intercept is 18, y-intercept is 18. b. x-intercept asked by Cheryl on May 16, 2011 4. ## MATH (5 pts) The length, X, of a fish from a particular mountain lake in Idaho is normally distributed with \mu = 9.7 inches and \sigma = 1.7 inches. (a) Is X a discrete or continuous random variable? (Type: DISCRETE or CONTINUOUS) ANSWER: (b) Write the event asked by Violet on February 5, 2014 5. ## Math(Please help) Projectile motion: Let's suppose you throw a ball straight up with an initial speed of 50 feet per second from a height of feet. a) Find the equation that describes the motion as a function of time. My answer was x = 0 and y=-16t^2+50t+6 b) How long is the asked by Abbey on April 16, 2010 6. ## Math--Please Check!!! Hi, I asked this question yesterday and I was given help in how to solve it. After working the problem, I have came up with$575.27. The problem is: When Beth finishes college, she has a balance or $2876.37 on a credit card with an annual percentage rate asked by Logan on February 27, 2007 7. ## algebra Also, I belive that #4 is D. I drew out a graph and it is symmetrical to point A. After looking over #3, I got B because axis of symmetry is -b/2a, so it would be 6/2(1)= 3. I need help on how to do the following problems: 1. The graph of x^2 + y^2 = 100 asked by Anonymous on April 1, 2007 8. ## Math The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in asked by Anonymous on January 31, 2017 9. ## Math The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in asked by Anonymous on January 31, 2017 10. ## chem How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The molar heat capacity of CH3OH is 81.1 J/Mol/K. Okay...the answer is approximately around 254. It was a homework problem. The asked by joseph on February 15, 2010 11. ## Math The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in asked by Ivo on January 31, 2017 12. ## Math Riddle How many two-digit numbers are multiples of 3 and also factors of 81? 3x=9 so try x=1,2,3,4 and see. I have been given a riddle that has driven me mad ... but worse, once given the answer. I just became baffled. Can anyone please explain why 487 is the asked by Nini on November 19, 2006 13. ## math-urgent 1. two cards are drawn from a standard of 52 cards. Find the probability that the second card is a spade given that the first card is a club. 2. Suppose you draw 3 cards from a standard deck of 52 cards . Find the probability that the third card is a club asked by temmick on April 3, 2014 14. ## math At a bagel shop, 2 coffees and 4 bagels cost$6.00. Two coffees and 7 bagels cost $8.25. What is the unit price of one coffee and the unit price of one bagel? my answer: 1 bagel=$0.75 1 coffee= $1.00 Find the 5,550th term in the sequence 4 1/2, 5, 5 1/2, asked by PLEASE HELP CHECK MY ANSWER THANK YOU VERY MUCH! on April 6, 2016 15. ## English Please suggest me the best fit in each sentence. 1. the car--------dangerously before coming to a sudden halt.(turned, swerved, screeched) my answer is "turned" 2. The Manager------------off angrily after giving them orders.(broke, stalked threatened) My asked by ramesh reddy on March 26, 2009 16. ## statistics Section 5.3: Normal Distributions: Finding Values Answer the questions about the specified normal distribution. Q1: The lifetime of ZZZ batteries are normally distributed with a mean of 265 hours and a standard deviation ó of 10 hours. Find the number of asked by looking for someone to varify my work please on March 28, 2010 17. ## Biochemistry I'm desperate and I cannot find the answer to this question.... As the name implies, globular proteiens tend to have a roundish, globular shape. What types of side chains might you expect to find on the amino acid residues that face the outside of a asked by Sam on May 8, 2007 18. ## Math, data management How many different ten digit telephone numbers contain four 2's, three 3s, and three 7s? I tried sorting the numbers out in order 2 2 2 2 | 3 3 3 | 7 7 7 10!/2!3!7! But I couldn't find the correct solution as the answer was 4200 asked by Deval on February 21, 2017 19. ## Math problem still stuck Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). I understand this so far f(a)=f(a+15) 1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7) I have multiplied the LCD of (a-8)(a+7)(a+22)by both sides with no luck. This is a multiple choice question a.) asked by Shawn on October 12, 2008 20. ## maths The scale of a map is 1:25000.Find the actual length of a road,in cm,which is measured 7.8 cm on the map.Express the answer in standard form. asked by ashley on January 11, 2014 21. ## algebra don't quite understand how to go about finding the answer to this problem. I have to find two different points for a line, graph it, and also above or below the line to show the relationship. How do I go about doing this? The equation is: 3y-8x >24 Thank asked by Laura on March 21, 2011 22. ## Geometry Find the arc length, of a 130 degree arc, in a circle with a diameter of 7.2 inches. Round your answer to the nearest thousandth asked by Bob on May 20, 2012 23. ## trig ABC is rightangled triangle. AD is the bisector of angle BAC. Angle DAC=15 degrees. X=CD. Find X. I know the answer is 7.1 but do not know how to do the actual sum. Can you please help. asked by jane on May 5, 2011 24. ## calculus Find the average rate of change of the function over the given interval. You must reduce and simplify your answer, if possible. a. f(x)=cot x, [pi/6, pi/2] b. f(theta)= -2 + cos (theta), [-pi, 0] asked by Taylor on June 5, 2011 25. ## TRIGONOMETRY Can someone please give me a step by step answer on how to find the complex cube roots of 8(cos(4π/5)+isin(4π/5))? I need to know how to do this for my trig final next week. asked by Kate on May 17, 2013 26. ## Algebra The perimeter of the rectangle is 112 units. Find the length of side PQ (bottom). . Write your answer without variables. SR (top): 4z-2 SP (side):3z+2 asked by Anonymous on November 3, 2015 27. ## Math A pond 100 ft in diameter is surrounded by a circular grass walk 2 feet wide. Find the are of the walk. Answer in terms of π. Please help me! TY asked by Kelly on May 6, 2011 28. ## History Can someone please help me with this history question? I looked for the answer but couldn't find it in my lessons or through the internet... Question~ What is a modern day example of judicial review asked by Abby on October 20, 2015 29. ## Physics A series circuit contains only a resistor and an inductor. The voltage V of the generator is fixed. If R = 10 Ω and L = 4.2 mH, find the frequency at which the current is one-half its value at zero frequency? Answer in Hz asked by Elizabeth on March 21, 2013 30. ## Economics I have a question, and I can't find the answer in the book. Can someone help me? "The domestic demand for many Agricultural products is inelastic. How does this contribute to the price volatility of Ag products?" asked by Katie on December 3, 2007 31. ## Physics Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. I know that 1/16 of Fg is the answer but I can't seem to find out what the Fg is. asked by Elizabeth on October 28, 2010 32. ## math if you threw a 6-sided die 48 times, about how many times would you expect to land on a number greater than or equal to 4? how do i find the answer?explain. asked by Celest on April 16, 2012 33. ## Math Fiona earns$15 for each lawn she mows. What is the inequality to find out how many lawns she must mow to earn at least \$135. My answer 15m

asked by CC on January 14, 2015
34. ## Physics

Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. I know that 1/16 of Fg is the answer but I can't seem to find out what the Fg is.

asked by Elizabeth on October 28, 2010
35. ## physics

A physics professor lifts her 8.2-kg briefcase at constant speed with an upward force. Find the magnitude of her force. answer in newtons.

asked by khan on February 21, 2011
36. ## MATH

A quiz consists of 90 multiple-choice questions, each with 4 possible answers (A, B, C and D). For someone who makes random guesses for all of the answers, find the probability of getting A as right answer.

asked by ANUP on July 17, 2016
37. ## tere

what did i do wrong? i need to find lowest vapor pressure. a 0.13 m FeCl3 b 0.50 m sucrose c 0.24 m NaNO3 d 0.15 m Na2PO4 so i solved. a 4 x 0.13 = 0.52 b 1 x 0.50 = 0.50 c 5 x 0.24 = 1.2 d 7 x 0.15 = 1.05 i chose C but the answer is A. did i do something

asked by chemistry on October 16, 2010
38. ## CALC

Find the volume of the solid obtained by revolving the region bounded by y=(19/3)x-(19/3)x^2 and the x-axis around the x-axis. Keep answer in terms of pi PLease explain each step

asked by SARAH on June 29, 2016

An automobile with an initial speed of 4.56m/s accelerates uniformly at the rate of 2.4m/s2. Find the final speed of the car after 4.4 s. Answer in units of m/s.

asked by Taylor on September 21, 2010
40. ## Maths

Thanks steve for a brilliant answer! Got one last one which is gobbledegook to me. Two functions f and g are defined by f:x(arrow)x^2 + 3 g:x(arrow)2x + 1 find: a) the function fg b)solve the equation f(x) = 12g^-1(x) Many Thanks!!!!

asked by Saud on November 21, 2012
41. ## algebra 1

I need to find the slope of a line that is parallel to the x-axis, completely perpendicular. The answer choices are A. 0 B. 1 C. undefined D. infinity I'm thinking undefined?

asked by sydney on December 3, 2017
42. ## Math

Suppose you are comparing two numbers that are greater than 1,000. You want to find the smaller of the numbers. How many pairs of digits might you have to compare before you have your answer? Explain.

asked by Felix on September 5, 2013
43. ## Math

Find the probability of the following event: tossing a coin tails up or rolling a number less than 4 on a number cube. I got 1/2 + 3/6 and got 1. The answer is 3/4. I don't understand what to do. Please help.

asked by Katie on April 18, 2016
44. ## math

Find the area of a sector of a circle if the central angle measures 90 and the radius measures 4 inches. Leave your answer in terms of .

asked by rich on February 12, 2019
45. ## Linear Inequality + graphing?

don't quite understand how to go about finding the answer to this problem. I have to find two different points for a line, graph it, and also above or below the line to show the relationship. How do I go about doing this? The equation is: 3y-8x >24

asked by Laura on March 21, 2011
46. ## Chemistry

I have a bag of m&m's with 52 in it and on the pkg it states it weighs 47.9g. If I divide by 52 it gives me .92g per m&m. To find out what the mass is of a mole of m&m's do I Multiply 6.02 x 10 to the 23 power x .92g for my answer?

asked by Becky on November 9, 2007
47. ## trig

ABC is rightangled triangle. AD is the bisector of angle BAC. Angle DAC=15 degrees. X=CD. Find X. I know the answer is 7.1 but do not know how to do the actual sum. Can you please help AB = 23 CM

asked by jane on May 5, 2011
48. ## math

When a single card is drawn from an ordinary 52-card deck, find the odds in favor of getting a red 10 or a black 6. I think the answer is 1:12. Is that correct?

asked by KiKi on April 25, 2010
49. ## Calculus

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. HINT [See Example 3.] Enclosed by y = x and y = x^4

asked by Tiffany on December 15, 2013
50. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) F(x) = x^4/5(x − 1)^2

asked by TayB on October 21, 2015

Suppose you are comparing two numbers that are greater than 100. You want to find the smaller of the numbers. How many pairs of digits might you have to compare before you have your answer? Explain

asked by Patty on October 4, 2013
52. ## Math ( Polynomial )

If the polynomial, x^4 - 6x^3 + 16x^2 - 25x + 10 is divided by another polynomial x^2 - 2x + k, the remainder comes out to be x + a, find k + a, please work the complete solution instead of giving simply an answer.

asked by Jack on April 13, 2013
53. ## Physics

Consider a force F = 815 N pulling 3 blocks of masses m1 = 7.94 kg, m2 = 15.3 kg, and m3 = 32.4 kg along a frictionless horizontal surface. Find the acceleration a of the blocks. Answer in units of m/s2.

asked by Priscilla on October 9, 2012
54. ## Algebra

The perimeter of the rectangle below is 74 units. Find the length of side AB . Write your answer without variables. DC (top) 4z-1 CB (right side) 3z+3 AB (bottom) unknown

asked by Caleb on December 8, 2015
55. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = x^(5)e^(-6x)

asked by TayB on October 21, 2015
56. ## Geometry

Find the arc length, of a 130 degree arc, in a circle with a diameter of 7.2 inches. Round your answer to the nearest thousandth

asked by Maria on May 20, 2012
57. ## Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) h(t) = t^(3/4) − 3t^(1/4)

asked by TayB on October 21, 2015
58. ## statistics

Scores on a test have a mean of 66 and Q3 of 81. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth.

asked by Abby on March 29, 2010
59. ## statistics

Can you step by srep dumb this down so that I can understand how to get the answer please? A set of 50 data values has a mean of 15 and a variance of 36. Find the standard score of a data value = 21

asked by MissPatte on October 31, 2014
60. ## geometry

a piece of ribbon is x inches long. find the total length of 7 equal pieces of ribbon. express the answer in terms of x.

asked by Anonymous on September 7, 2011
61. ## physics

Find the velocity in m/s of a dropped ball after 2.4 seconds in the air. Assume its initial velocity is zero. Round answer to one decimal place.

asked by Samanthaa on September 13, 2011
62. ## algebra

Find the equation of a line that is parallel to the line y = −3x and contains the points (9,−4). Y=______ (Type your answer in slope-intercept form.) qaz

asked by edward on February 4, 2016
63. ## Physics

A block is at rest on an inclined plane. The mass is 44 kg. µs = 0.54 Find the critical angle, θc, at which the block just begins to slide. Answer in units of ◦

asked by Maya on December 7, 2014
64. ## Math

find the parralel of latitude along which a journey of 166km makes a change of 4 degree in longitude give answer to the nearest degree

asked by flexy on October 19, 2012
65. ## math

Suppose you are comparing two numbers that are greater than 1,000. You want to find the smaller of the numbers. How many pairs of digits might you have to compare before you have your answer? Explain.

asked by Anonymous on August 27, 2012
66. ## math

suppose you are comparing 2 numbers greater than 1000. you want to find the smaller of the numbers. how many pairs of digits might you have to compare before you have your answer? explain

asked by mythreyee on August 30, 2012
67. ## Calculus

Hi, I need someone to double check my answer because it doesn't seem right to me. Find the centroid of the region bounded by y=0 and y = x^2 -2x. I calculated the area to be 4/3 and centroid (1, 0.4)... is that correct? Thanks in advance!

asked by Monica on April 18, 2011
68. ## Math

The function defined below satisfies Rolle's Theorem on the given interval. Find the value of c in the interval (0,1) where f'(c)=0. f(x) = x3 - 2x2 + x, [0, 1] Round your answer to two decimal places.

asked by Bri on November 1, 2016

Find the area of triangle ABC if AB = BC = 12 and

asked by Gem on April 1, 2015
70. ## Statistics

A student takes true or false test consisting of 10 questions by just guessing at each answer. Find the probability that the student's score will be 80% or more?

asked by Reid on May 9, 2017
71. ## Algebra

Scores on a test have a mean of 66 and Q3 is 80. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth. 10.5 18.7 20.9 9.4

asked by Leozap on May 1, 2015
72. ## math

Use long division to find the quotient below. Enter your answer as a polynomial in descending order, using the caret ( ^ ) for exponents; for example, enter x2 as x^2.(x2 + 10x + 21) (x + 3)

asked by Carrie on May 10, 2012
73. ## calculus 2

Consider the solid obtained by rotating the region bounded by the given curves about the line x = -3. y = x^2 , x = y^2 Find the volume V of this solid. I keep finding the wrong answer.

asked by angel on February 16, 2010
74. ## college algebra 2

Use the equation W = -0.0014x2 - 0.076x + 50 to find W for each x-value in the table. Use this equation to estimate the number of worms on 60 and on day 180. Which answer is the most accurate?

asked by Judith on December 11, 2011
75. ## trigonometry

the bases of a trapezoid are 22 and 12 respectively. The angles at the extremities of one base are 65 degree and 40 degree respectively find the two legs. Answer using law of sines pls

asked by joe on February 10, 2012
76. ## college algebra 2

Use the equation W = -0.0014x2 - 0.076x + 50 to find W for each x-value in the table. Use this equation to estimate the number of worms on 60 and on day 180. Which answer is the most accurate?

asked by Judith on December 11, 2011
77. ## physical

Find the magnitude of the resultant of the following two vectors: i) 50 units due east and ii) 100 units 30° north of west. the answer is 62 unit but how it come ?

asked by meera on October 25, 2010
78. ## physics

Find the change in the gravitational force between two planets if the masses of both planets are doubled but the distance between them stays the same. Express your answer as an integer.

asked by jim on March 8, 2012
79. ## Math

F(x) = -x^2 - x +2 graph function identify the vertex and axis of symmerty. Can some one explain the steps to get answer? I know I need to find the points on a graph just so confused

asked by Sam on March 10, 2017

Would it be fair to pay U.S. employees that are relocated overseas a different wage than local employees? Can you please help me find resources in which I could answer this question fairly. thanks

81. ## algebra

Find the equation of a line that is perpendicular to the line y = 1/4x + 5 and contains the point (-6, 0) Y=________ (Type your answer in slope-intercept form.) qaz

asked by edward on February 4, 2016
82. ## math

Find the surface area of the right rectangular prism. The height is 2 in, the length is 10 in, and the width is 4 in. I think the answer is 136. I made a formula, 2(8 + 20 + 40) and I got 136. Is this right?

asked by keisha on November 12, 2007
83. ## Algebra

The diameter of the moon is 2155 miles. Find volume of the moon. Round answers to the nearest whole number and leave in the answer

asked by Anonymous on June 1, 2012
84. ## Math

Find the area of a sector of a circle if the central angle measures 45° and the radius measures 12 inches. Leave your answer in terms of PI.

asked by Willowmaker on January 17, 2019
85. ## Science

Science project: how does the type of liquid affect weathering. Where do I find info on this subject? I am not sure what questions to ask/answer to start this project

asked by Lee on January 13, 2008
86. ## Geometry

A rectangular prism with 2 little square bases of a radius of 1m. It's height or rectangular length is 5m. Please help me find the surface area. The answer should be less than 50m².

asked by Peter on June 1, 2011
87. ## Physics

An automobile with an initial speed of 6.12m/s accelerates uniformly at the rate of 4.4 m/s^2.Find the final speed of the car after 4.6 s. Answer in units of m/s

asked by Roseanna on September 17, 2014
88. ## Cal 1

Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equation. (Round your answer to four decimal places.) 1/3x^3 + 1/2x^2 + 1 = 0, x_1 = −3

asked by Dee on March 7, 2013
89. ## Calculus

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) h(p) = (p − 2)/(p^2 + 9)

asked by Kris on December 5, 2011
90. ## math

If you know the rate of a water leak in gallons per hour, how can you find the number of hours it takes for 1 gallon to leak out? Justify your answer. THANK YOU!

asked by kimie on October 6, 2015
91. ## math *functions*

Find the first four terms of the sequence represented by the expression. n(n-1)-5 Pls just write down a step by step process of what to do, dont just give me the answer

asked by halp meh on February 13, 2019
92. ## Calculus

The function defined below satisfies Rolle's Theorem on the given interval. Find the value of c in the interval (0,1) where f'(c)=0. f(x) = x3 - 2x2 + x, [0, 1] Round your answer to two decimal places.

asked by olga on October 17, 2015
93. ## Math

I really need help with a quadratic question. So the problem is kx^2+[k+2]x-3=0 has roots which are real and positive. Find the possible values that k may have. The answer is -8+ √60

asked by Barbra on September 17, 2016
94. ## Calculus

Solve : sec^2(x)= ã3*tanx + 1 on [0,radian-180 degrees) - couldn't find the symbol for radian on computer please try and explain how you got your answer best as yu can thanks so much :)

asked by Jack on September 11, 2010
95. ## Algebra

Solve Find (f o g)(-6) when f(x)=4x+4 and g(x)=6x^2-3x-6. I originally came up with 918, but the answer is 916. Obviously I was close, but could someone tell how to get 916. I am studying for a test and am re-working my homework problems. Thanks.

asked by Anonymous on March 29, 2008
96. ## physics

A proton moves at right angles to a magnetic ﬁeld of 0.0609 T with a speed of 8.16×10 6 m/s. Find the magnitude of the acceleration of the proton. Answer in units of m/s 2

asked by Anonymous on March 3, 2011
97. ## Math

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x)=x^(4/5)(x − 6)^2

asked by AH on November 10, 2012
98. ## Math

A lorry travels at 50 km/h. Given that the diameter of its wheel is 88 cm,find how many revolutions per minute the wheel is turning. GIve your answer to the nearest whole number.

asked by Bushra on November 7, 2015
99. ## Math

I made a mistake when I simplified. Find and explain my mistake. Then complete the problem correctly. Simplify:(3m^7k^-5)^-3 Solution: 3^-3 m^4 k^-8 m^4/3^3k^8 Answer:m^4/27k^8

asked by James on November 3, 2009
100. ## Chemistry

Please check my workings to see if i'm correct, thanks! Find the percentage of nitrogen by mass in Ammonium nitrate, NH4NO3. (28/80)x 100% = 35% Is my answer correct?

asked by Marrion on October 20, 2009