# 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-
## 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* -
## Algebra

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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 11th grade

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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## Math 3rd grade

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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## math please help

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

*asked by Gem on April 1, 2015* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## business

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

*asked by Adam on January 17, 2010* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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*