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

138,784 results, page 76-
## Maths

Check my answer please? Not sure if I did this right. Let y = f(x) be a cubic polynomial with leading coefficient a = 2 and f(-2) = f(1) = f(2) = 0. find the factored form of f. I got: f(x) = 2(x + 2)(x - 1)(x - 2)

*asked by Bobby on February 19, 2015* -
## spanish

Im doing a project on Argentina, and we need to find a tradition and answer questions. Do you know of any Argentine traditions or know any websites i could use?

*asked by Emily on March 24, 2008* -
## Math

Explain how you could find the volume of a pyramid given a prism with the same base are and height. Justify your answer.

*asked by Helen on April 3, 2016* -
## Statistics

find z such that 6.6% of the standard normal curve lies to the right of z. (Round your answer to two decimal places.)

*asked by Amy on November 17, 2016* -
## CALC HELP!

Find an equation of the tangent line to the graph of y= x+ (4/x) at the point (4,5). I can't figure out the answer to this. It's supposed to be y=3/4x +2 but I can't get that.

*asked by em on March 9, 2016* -
## chemistry

Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I don't know what to do

*asked by Someone PLEASE HELP! on October 22, 2010* -
## math

please can you explain this to me I don't understand! Find the value of the following 10! 11! over 7! 13! If your answer is not an integer, write it as an exact fraction. thank you so very much

*asked by mary ann on January 31, 2015* -
## Algebra II

Find all zeros of f f(t)=(t-2)^3-(t-2) ok... now do I have to factor out (t-2)^3 to [t^3-6(t^2)-12t-8] and then minus (t-2) resulting in [t^3-6(t^2)+13t-6]? if so, where can I go from there?? sorry... the second answer would be [t^3-6(t^2)+11t-6]

*asked by Becca on November 8, 2006* -
## science

Doing review and can't find answer in notes: sun is approximately 4.5 billion years old what is it's classification?

*asked by jessicaB on September 27, 2007* -
## statistics math

MEAN ƒÊ=10 & STANDARD DEVIATION ƒÐ=2. FIND THE PROBABILITIES: 9.4 Ú X Ú 10.6 i have 2 different answers but am checking the answer. thank you one is 0.6179 the other is 0.2358

*asked by Jeannie on March 8, 2011* -
## Physics

A 2.73 kg particle has a velocity of vx = 6.02 m/s and vy = 0.316 m/s. Find the magnitude of its total momentum. Answer in units of kg · m/s

*asked by Kaylee on June 27, 2014* -
## maths

Find length of diagonal of rectangle whose adjacent sides are 30cm and 16cm.tell answer

*asked by shikha on July 26, 2016* -
## Math

Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim_(x->59)(sqrt(x+5)-8)/(x-59)

*asked by Anonymous on January 28, 2012* -
## PreCal

Find the distance between P1(3, –195°) and P2(–4, –94°) on the polar plane. Round your answer to the nearest thousandth.

*asked by Jack on September 5, 2011* -
## functions

given: f(x)=(2x+3)/(3X+2), find the inverse function of this. please don't give me the answer only, i would like to see the full working out so then i'll know how to do it next time!thanks!!:-)

*asked by Ann on May 17, 2008* -
## math

Find the x-intercepts of the parabola given by the equation. (If an answer does not exist, enter DNE.) y = 5x2 − 5x

*asked by Anonymous on November 13, 2018* -
## Geometry

M is the midpoint of LM LM=3x+5 LN=5x+40 Find MN I've tried to work this out several times and am pretty sure I start it off by 3x+5=5(x)+40 but I keep getting a negative answer or a fraction for X and know that is not right. Can someone please help me?

*asked by Tiffany on September 12, 2014* -
## Math

Find the distance d(p1,p2) between the ponts p1 and p2. P1=(-4,3); P2= (6,0) d(P1,P2)= _____ Type an exact answer, using radicals as needed.

*asked by Sully on September 22, 2016* -
## Chemistry

What are probes in RFLP made of? HOw do they help isolate rare DNA fragments? I can't find the answer, so can I get some help please.

*asked by Andre on May 23, 2008* -
## calculus

Find all relative extrema of the function. (Enter NONE in any unused answer blanks.) f(x) = x4 – 8x3

*asked by Anonymous on October 9, 2012* -
## world studies

The rapid exchange of ideas in the computer age has increased the _____. I can´t find the answer.

*asked by kid on November 19, 2018* -
## history U.S

I can't find the answer to this plz help how did adams' supporters characterize jefferson during the election og 1800?

*asked by hi on January 22, 2016* -
## calculus

For the function f(x) = 1 + sin(x) find f(2). Leave your answer rounded to tenths. Assume x is in radians

*asked by kaycee on February 5, 2010* -
## Calculus

use implicit differentiation to find dy/dx if 5xy+x^2y=10 Is this correct answer for this question (-5y-2xy)/(12x)

*asked by Angie on January 6, 2017* -
## Math

Need help I have to find a pattern for 8, -1, 2, -1 I know the answer is 1/3 but have no idea how I get there...I am trying to multiply each by -1/2 but I can't get the 1/3 at the end for some reason and I have the similar problem as well: 8, -4, 2, -1

*asked by Maggie on May 24, 2008* -
## statistics

Find the critical value for the hypothesis test, given the following. (Give your answer correct to two decimal places.) Ha: ó1 > ó2, with n1 = 7, n2 = 16, and á = 0.05 F=?

*asked by Tiara on March 19, 2014* -
## geometry/help

Find the area of a regular heptagon with the side 7 cm. answer 178.1 cm² can you check

*asked by mike on April 28, 2011* -
## Trigonometry

I'm supposed to find the angle reference for a degree of 0. I think the answer is 180 degrees. Is that correct?

*asked by Ineedhelp on January 22, 2018* -
## statics

two dices are rolled find the probability that the sum is less than 6 and what is the answer rounded to 4 decimals places

*asked by bernie on July 29, 2016* -
## chemistry

Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I don't know what to do

*asked by Someone PLEASE HELP! on October 22, 2010* -
## calculus

lim as approaches infinity of sin(pie.x/2-3x) i need the work and answer find the limit

*asked by Ben on October 2, 2011* -
## calc

Find the slope of the tangent line at (8,8) for the function (16-x)y^2=x^3 Round your answer to two decimal places.

*asked by math on October 24, 2013* -
## precalculus

Can you check my work? find two sets of parametric equations for the given rectangular equation x+y^2=4 answer: x=-y^2+4 x=-t y=-t^2+4 x=-t^3 y=-t^3+4

*asked by Anonymous on December 12, 2016* -
## Math - Please Check My Answer

Please help me with the following: Find the greatest possible error for each measurement. 4 1/2 oz A. 1/4 oz B. 2 1/2 oz C. 1 oz D. 2 1/4 oz I know it is not B(I got it wrong.), but I think it is A. Is this correct? Please help me by checking my answer.

*asked by Brady on September 1, 2014* -
## Geometry

Find the area of the trapezoid. L1 = 23ft, L2 = 15ft, H = 12ft Is 228 ft the correct answer?

*asked by Mindy on November 8, 2011* -
## geometry

A cone has a volume 320 cm^3. Find the radius of the base. Round your answer ti the nearest 0.1 cm.

*asked by Anonymous on May 20, 2015* -
## English, Written Communication

Which of the following are examples of coordinate headings? A. 3, b, iii B. A, i, a C. ii, 2, B D. A, B, C My answer was C but i got it wrong, is it A? PLEASE HELP CANT FIND IT IN MY TEXT BOOK

*asked by Nicole on May 23, 2015* -
## math

I am trying to find the answer to a scientific notation problem, express in simplify terms (-2y) with and exponent of 4.

*asked by LAWRENCE on January 3, 2011* -
## algebra

I need to find the approx. value for x that are solutions to f(x)=0 for f(x)=-5x^2 + 7x + 2 please show steps as the answer I got does not match any of the multiple choices.

*asked by Alaska Diamond on September 26, 2013* -
## Physics

Find the magnitude and direction of the equilibrant force for these two concurrent forces: 13.5 N, E and 32.0 N, N. Pls HELP me answer this. Thank u very much.

*asked by Stephanie on October 16, 2013* -
## Math

Find the are of a triangle with 7 ft height and 22 ft length. A. 154ft^2 B. 58ft^2 C. 77ft^2 D. 38.5ft^2 Is the answer A?

*asked by Callie on January 22, 2015* -
## Algebra

Find the domain of the function. f(x)=(sqrt x+6)/(-2x-5) Write your answer as an interval or union of intervals.

*asked by Jena on February 4, 2011* -
## Geometry

the angle of depression from D to F measures 40 degrees. If EF= 14 yd, find DE. round answer to nearest 10th

*asked by kelsey on February 8, 2012* -
## Math (Please help!)

Consider the following function. f(x)= x^2 - sqrt(x) Find the equation of the line tangent at the point (1, 0). the answer would be 6, duh

*asked by Me on February 20, 2007* -
## calc

If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i keep getting the wrong answer for this problem evn when plugging 2 in for y.

*asked by sara on May 9, 2008* -
## Math

Find an equationof the line having the given slope and containing the given point. Express your answer in the form y=B or y=mx+b M=0,(0,5) The equation is y=

*asked by Pam on February 11, 2014* -
## social studies

what is a corporate farm? its part of a short answer and i cant find a definition that is easy for me to understand.

*asked by Natasha on March 28, 2017* -
## physics

ok so dr= 2i + 3j while F= 5i + 2j It wants me to find the work. now i know w=Fxdr. what i want to know is why when you take the dot product of both, you get a different answer compared to when you just multiply the magnitudes.

*asked by Mitch on March 7, 2010* -
## pre calculus

can you check my work Find two different sets of parametric equations for the given rectangular equation: y=x^2+10 answer: x=t y=t^2+10 x=t^3 y=t^6+10

*asked by Anonymous on December 12, 2016* -
## calc

If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i keep getting the wrong answer for this problem evn when plugging 2 in for y.

*asked by sara on May 9, 2008* -
## Calc/Precalc

Find the derivatives of 1. ln[(2x^3⋅2e^x)] 2. xy = cot(xy) 3. y = cos(x^3 + 27) I don't really know where to start with these. The answer is (3+x)/(x) for the first, y/-x for the second, and 35. -3x^2 sin(x^3 + 27) but I have no idea how they got there.

*asked by Heather on May 8, 2015* -
## math

Let X be a normal random variable with μ = 12 and σ = 2. Find the value of the given probability. (Round your answer to four decimal places.) P(7 < X < 9) =

*asked by titi on July 3, 2017* -
## History

After the civil war, why did some southerners feel they were being taxed without representation? I can't find the answer. Some help would be appreciated!

*asked by Gerard Way on April 7, 2017* -
## geometry

a circle is inscribed in an equilateral triangle. how do you find the value of x? also have to round the answer to the nearest whole number.

*asked by ivette hanon on May 19, 2011* -
## math

Find the geometric mean of the pair of numbers below. If necessary, give the answer in simplest radical form. 5 and 18

*asked by divina on January 16, 2018* -
## Geometry

Find the missing side. Approximate the answer to three decimal places when appropriate. A = 15 yd C = 25 yd I have no clue on how to do this one. Please any help would be appreciated.

*asked by Mindy on November 8, 2011* -
## Geometry

Find the area of the trapezoid. L1 = 23ft, L2 = 15ft, H = 12ft Is 456ft the correct answer?

*asked by Mindy on November 8, 2011* -
## Geometry

Find the area of the parallelogram. L1= 19m, L2 = 25m Can you explains this? Do I multiply? Is the answer 475m?

*asked by Mindy on November 8, 2011* -
## Maths

For the geometric sequence t: {3, m, n, 192, . . .}, find the values for m and n.(Answer is m=12, n=48) How can we do this without trial and error? Thanks to anyone who helps.

*asked by Fred on October 6, 2018* -
## Geometry

Given: ΔАВС, m∠ACB = 90° m∠ACD = 30° AD = 8 cm. Find: CD, Perimeter of ΔABC plz add answer

*asked by Alexa on February 25, 2017* -
## Maths

The curve y = ax^2 + bx + c touches the line y = 2x at the origin and has a maximum point at x = 1. Find the values of a, b and c. (answer: a = -1, b = 2, c = 0)

*asked by Fred on November 16, 2018* -
## Graphing Linear Equations! Quiz! HELP ASAP

I just need many examples and tips on how you solve, find, graph, and answer linear equations. I'm so confused!

*asked by Random Girl on February 7, 2018* -
## math

Use a proportion to find the length of the missing side in the following similar figures. Answer choices: x = 28 cm x = 30.8 cm x = 6.4 cm x = 19 cm

*asked by rasberry on November 30, 2015* -
## mathematics

find the general solution to the following differential equation dy/dx=-(In(x))/(x^2)*y^1/2 (x>0,(y>0)give answer in implicit form.

*asked by queros on May 29, 2008* -
## Statistics

If four coins are flipped at once, find the probability that there will be at least 2 heads. Round your answer to 3 decimal places.

*asked by Hunter on March 3, 2016* -
## Statistics/Math

U.S. Interstate 64 runs between Portsmouth, VA, at I-264 on the eastern end to St. Louis, MO, at I-270 on the western end. While passing through six states and five more major cities, I-64 intersects nine more interstate highways. The number of miles in

*asked by Jane on July 4, 2012* -
## circles and arcs

YOU have a circle with a traingle inside. P being the top of triangle and Q and R, are on the sides, PQ= (8x-10) and PR=(6x) and the bottom QR= (10x+10) SAYS: a)find X b)is the triangle equilateral, isosceles, or scalene? explain. We have not done this

*asked by lilman on May 23, 2012* -
## Physics/Math

A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to

*asked by Technoboi11 on March 3, 2007* -
## English

When making multiple choice quiz for students about speaking. Do I need to use question marks in the answer choices. Example- Hello how are you. a)fine thank you and you b)good wasup c)I'm ok Answer (a) is the answer to the question but in itself is a

*asked by Ajarn on August 17, 2012* -
## Metaphors

Find a metaphor --------------------------------------- DREAMS Hold fast to dreams, For if dreams die, Life is a broken-winged bird That cannot fly. Hold fast to dreams, For when dreams go, Life is a barren field Frozen with snow. -Langston Hughes !. What

*asked by Larry on January 14, 2009* -
## Physics

The artificial sweetener NutraSweet is a chemical called aspartame (C14H18N2O5). (a) What is its molecular mass (in atomic mass units)? 294.13 u (b) What is the mass (in kg) of an aspartame molecule? kg I was able to find the mass units but I'm having

*asked by Will on April 27, 2008* -
## Math, Algebra

Can someone correct my homework. Evaluate.For number 1 1) /4/ + /-3/ My answer: 7 2)Business & Finance: A country exported $60,00,000 less than it imported, creating a negative trade balance. My answer: -60,000,000 Evaluate the following expressions

*asked by Jasmine 20 on November 24, 2006* -
## Math

Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = + x (ii) Graph this equation on a scatter diagram. (Do

*asked by Tracy on June 28, 2013* -
## Algebra

Here's the question: Jose needs to enclose a rectangular section of his yard. The area is 35 sq. ft. and the perimeter is 27 sq.ft. Find the length and width of the section. The issue I'm having is that I think I need to find the common fators of 35 and 27

*asked by cbarnett on December 19, 2006* -
## Discrete Math

I am really stuck on these problems. I've worked a lot of them but I can't get these. Sometimes I think I know the answer but I can't show how I got it. 1.) Solve each matrix equation for X. 2X + 5A = B 2.) Find the following matrices: a. AB b. BA A= 2 4 3

*asked by Ryan on February 25, 2010* -
## Trigonometry

Find cotangent theta given that cosecant theta equals -3.5891420 and theta is in the third quadrant. I was using the trig identity 1+cot^2theta=csc^2theta I wanted to isolate cotangent so I plugged in 1/sin (-3.5891420) and then squared my answer. I then

*asked by Maddy on February 9, 2015* -
## year 8 maths

Find the amount of the following foreign currencies (to 2 decimal places) that can be bought with 250 Singapore dollars. The sterling pound There is a chart and the pound sells at 2,552,0 for 1 Singapore dollar. The pound is bought at 2,578.0. I did

*asked by Maria Chiara on December 12, 2009* -
## Math Question

Hi! We asked this question last night but we got confused. Find the amount in the account if $2000 is invested at 6.125%,compounded semi-anually, for 2 years. I worked this problem and Lydia worked this problem. I came up with the answer $2,252.50 However,

*asked by Logan and Lydia on February 27, 2007* -
## Probability

A defective coin minting machine produces coins whose probability of Heads is a random variable Q with PDF fQ(q)={3q2,0,if q∈[0,1],otherwise. A coin produced by this machine is tossed repeatedly, with successive tosses assumed to be independent. Let A be

*asked by A on April 2, 2014* -
## Math

I am having trouble understanding how to reduce fractions to its lowest term... All I can understand is I have to find the lowest number that will divide into both numerator and denominator. How do I understand the solution on how to reduce fractions to

*asked by Tonya on November 1, 2011* -
## Physics

A pair of speakers separated by distance d = 0.900 m are driven by the same oscillator at a frequency of 670 Hz. An observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers as in the

*asked by Anna on June 8, 2015* -
## Physics

A pair of speakers separated by distance d = 0.900 m are driven by the same oscillator at a frequency of 670 Hz. An observer originally positioned at one of the speakers begins to walk along a line perpendicular to the line joining the speakers as in the

*asked by Anna on June 8, 2015* -
## ruby

there is a sandbox with a width of 6ft and a length of 10ft, suppose the length and the width are doubled. a. find the percent of change in the perimeter b. find the percent of change in the area i think the answer is 66.67% for both of them

*asked by math (check answers) on February 21, 2016* -
## Precal

How do you find all the polar coordinates of P=(-1, -2pi/3)? I've read that you're supposed to add 2pi to find the coterminals but when I do that I get different answers then in the book. The book answer is (1, 2pi/3+ (2n+ 1) pi) and (-1, -2pi/3+ 2npi).

*asked by Mayhem on February 25, 2012* -
## calculas

how long will it take an ice cube to melt completely? You left out an ice cube ant 1/4 of it melts in 1 hour. Use the following steps to find out how long it will take before it is melted completely. 1-let s represent the side length of the ice cube, and

*asked by julie on March 6, 2011* -
## Spanish Lit (De la Educación Moral)

Ok so I'm trying to analyze the essay De la educación moral by Gabino Barreda but I'm stuck on these two paragraphs. Thus far in the essay I've found that he's trying to prove that religion itself is poitnless and irrelavent because all the rules and what

*asked by Cassie on October 4, 2011* -
## calculus

The question I'm having problems with is If f(x)=3x^2+7x+2, find f'(4) , using the definition of derivative.f'(4) is the limit as x--> ________ of the expression __________________. The value of this limit is _________________. I've got the first part that

*asked by Ron on January 27, 2012* -
## STATS

The probability of a manufacturing defect in an aluminum beverage can is .00003. If 100,100 cans are produced, (a) Find the approximate probability of at least two defective cans. (Round your answer to 4 decimal places.) (b) Find the approximate

*asked by Helen on October 30, 2010* -
## Calculus

Two cars start moving from the same point. One travels south at 60 mph and the other travels west at 25 mph. At what rate is the distance between the cars increasing 2 hours later? Let x = the distance covered by the south traveling car. Let y = the

*asked by Robin on June 29, 2013* -
## Physics

I have to design a laboratory activity to answer the question, "What is the relationship between the diameter of a circle and the area of the circle?" My teacher said to use a previous activity as a templete to help me. For the previous activity you had to

*asked by Jim on April 1, 2009* -
## Algebra

Two more Algebra questions : Having some difficulty with these. Drawing a blank on this one, not sure where to start. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x + 3y = 12 and passing through (9, -5).

*asked by John on October 16, 2007* -
## physic

Part 1 A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0 ◦ with the horizontal, as shown in the ﬁgure. The acceleration of gravity is 9.81 m/s2. If the coeﬃcient of kinetic

*asked by ally on February 26, 2011* -
## Math

A person has a total yearly income of $36,000. The part of thier income spent on transportation is 15%. How do I find the fraction in simplest form that represents the part of thier income spent on transportation? I don't want the answer, just how to get

*asked by Mary on June 8, 2008* -
## Math

A person has a total yearly income of $36,000. The part of thier income spent on transportation is 15%. How do I find the fraction in simplest form that represents the part of thier income spent on transportation? I don't want the answer, just how to get

*asked by Mary on June 8, 2008* -
## French

Can you please check these thanks. Directions: Identify each person described below (we are in the sports chapter by the way) Part 1 1. Un garçon ou une fille qui joue -------------. Answer: un joueur ou une joueuse 2. Un joueur qui garde le but

*asked by Missy on October 1, 2009* -
## Quantum Physics

We will carry out some steps of the quantum factoring algorithm for N=91 (a) What is the period k of the periodic superposition set up by the quantum factoring algorithm if it chooses x=8? I.e. what is the period of f(j)=8j(mod91) (b) Using your answer to

*asked by ss01 on October 13, 2013* -
## math

the world's largest cube puzzle in Knoxville measures 6 feet on each side. The scale factor between a standard cube puzzle and largest is 1/24. Find the surface area and volume of the standard cube puzzle. Answer is 0.375ft^2/0.015625ft^3 Not sure how they

*asked by mary on March 28, 2015* -
## physics

Assume the proton is at rest initially. The charge on the proton is 1.602×10−19 C and its mass is 1.67 × 10−27 kg. If the magnetic ﬁeld is 2.85 T and the potential diﬀerence is 2.29 MV, ﬁnd the magnitude of the force on the proton after the

*asked by Anonymous on March 14, 2013* -
## statistics

B} The average number of mosquitoes in a stagnant pond is 70 per square meter with a standard deviation of 8. If 36 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 70.9 mosquitoes

*asked by Loren on November 13, 2014* -
## Math

The formula N = 10(4') gives N, the number of bacteria present in a culture after t hours. How many hours does it take for the number of bacteria to grow to 2,560? a. 2 hours b. 3 hours c. 4 hours d. 5 hours The answer is c., but is there another way to

*asked by Angie on June 14, 2009*