Answers created by Rui D.
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How do you solve x^4-sqrt(3)x^2+1= 0x4−√3x2+1=0 ?
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An isosceles triangle has sides A, B, and C with sides B and C being equal in length. If side A goes from (5 ,1 )(5,1) to (3 ,2 )(3,2) and the triangle's area is 12 12, what are the possible coordinates of the triangle's third corner?
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The shorter leg of a 30-60-90 triangle is 4.3 feet long. What is the perimeter?
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A triangle has sides with lengths of 6, 4, and 3. What is the radius of the triangles inscribed circle?
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A pyramid has a parallelogram shaped base and a peak directly above its center. Its base's sides have lengths of 2 2 and 7 7 and the pyramid's height is 7 7. If one of the base's corners has an angle of (5pi)/65π6, what is the pyramid's surface area?
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A line segment is bisected by a line with the equation -7 y + 3 x = 2 −7y+3x=2. If one end of the line segment is at ( 2 , 4 )(2,4), where is the other end?
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How do you find the determinant of ((2, 11, -3, 1), (1, 5, 7, -4), (6, 13, -5, 2), (4, 22, -6, 2))?
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How do you find the determinant of ((3, 1, -2, 1), (1, 1, -3, 2), (2, 0, 2, 3), (3, 3, 1, -3)) ?
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How do you find the determinant of ((-5, 6, 0, 0), ( 0, 1, -1, 2), (-3, 4, -5, 1), (1, 6, 0, 3))?
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How do you find the determinant of ((5, 3, 1, 2), (0, 1, -1, 3), (2, 7, -4, 1), (3, 3, 5, -2))?
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How do you find the determinant of ((2, 5, -3, -1), (3, 0, 1, -3), (-6, 0, -4, 9), ( 4, 10, -4, -1))?
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How do you find the determinant of ((3, 4, 5, 2), (1, 0, 1, 0), (, 2, 3, 6, 3), (, 7, 2, 9, 4))?
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How do you find the determinant of ((2, 0, -1, 3), (-1, 1, 0, 2), (0, 3, 2, 4), (4, 1, -1, 0))?
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How do you find the determinant of ((44, 32, 18, 6), (-2, 10, 15, 5), (21, 12, -12, 4), (-8, -16, 4, 9))?
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How do you find the determinant of ((5, 3, 2, 8), (0, 0, 4, 0), (2, 8, 3, 1), (0, 7, -4, 2))?
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How do you find the determinant of ((2, 5, -3, -1), (3, 0, 1, -3), (-4, 5, -7, 8), (4, 10, -4, 1))?
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How do you find the determinant of ((-7, 0, 0, 3), (-5, -5, 0, 0), (0, -5, 0, 0), (-9, -4, 5, 2))?
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How do you find the determinant of ((5, 7, -1, 1, 0, 0), (2, 2, 1, 3, -1, 0), (-3, 4, -1, -2, 1, 2), (2, 9, -3, 0, 0, 0), (0, 1, 4, 0, 0, 0), (0, 0, 1, 0, 0, 0))?
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Question #45dfa
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Representatives of every Allied nation except which country attended the peace conference in Paris?
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How do I solve 'log(base 10) 5' without using the calculator?
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How do you simplify the expression (sqrt13+sqrt11)(sqrt13-sqrt11)?
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Question #dc275
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Question #49d42
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How do you simplify Cos(sin^-1 u + cos^-1 v)?
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What is the logarithm of .0856?
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What is the arclength of f(x)=2-3x in the interval [-2,1]?
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What is the arclength of f(x)=1/e^(3x) on x in [1,2]?
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How do you calculate log_32 64?
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What is the equation of the perpendicular bisector of a chord of a circle?
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Question #97ac0
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Two circles have the following equations: (x +6 )^2+(y -5 )^2= 64 and (x -9 )^2+(y +4 )^2= 81 . Does one circle contain the other? If not, what is the greatest possible distance between a point on one circle and another point on the other?
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Question #97ac0
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What is the arc length of f(x)=((4x^5)/5) + (1/(48x^3)) - 1 on x in [1,2]?
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What is the arc length of the curve given by f(x)=x^(3/2) in the interval x in [0,3]?
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What is the arclength of f(x)=[4x^2–2ln(x)] /8 in the interval [1,e^3]?
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What is the arclength of f(x)=sqrt(x+3) on x in [1,3]?
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What is the arc length of f(x) = ln(x^2) on x in [1,3] ?
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How do you find the determinant of ((7, 2, -8, 4, 6), (-3, -1, 4, -2, -3), (6, 2, 2, 4, 7), (1, 3, 7, 5, 1), (-2, 2, 3, 4, 7))?
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How do you evaluate arctan((arctan(9/7) - arctan(7/6)) / (arctan(5/3) - arctan(3/2)))?
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What is the arc length of f(x)= sqrt(x-1) on x in [1,2] ?
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Why was transportation on the Nile easy for trade and unification?
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A circle has a center that falls on the line y = 8/9x +4 and passes through ( 4 ,1 ) and (3 ,7 ). What is the equation of the circle?
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What is the orthocenter of a triangle with corners at (1 ,3 ), (5 ,7 ), and (9 ,8 )#?
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What is lim_(nrarroo)(-1)^(n-1)sin(pisqrt(n^2+0.5n+1)) ?
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What is the balance if $20,000 is invested at an annual rate of 7.8 percent for 5 years, compounded continuously. How long will it take for the original amount to double in size?
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How do you evaluate the integral of int abssinx dx from 0 to 3pi/2?
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What is int_-oo^oo (e^x)/((e^(2x))+3)
dx?
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How do you find the volume of the solid generated by revolving the region bounded by the curves y = x^(1/2), y = 2, and x = 0 rotated about the x=-1?
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The base of a triangular pyramid is a triangle with corners at (6 ,7 ), (4 ,5 ), and (8 ,4 ). If the pyramid has a height of 6 , what is the pyramid's volume?
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How do you integrate int x / sqrt(-x^2+4x) dx using trigonometric substitution?
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How do you integrate int 3 * (csc(t))^2/cot(t) dt?
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A parallelogram has sides with lengths of 14 and 9 . If the parallelogram's area is 63 , what is the length of its longest diagonal?
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A line passes through (3 ,6 ) and (6 ,5 ). A second line passes through (4 ,3 ). What is one other point that the second line may pass through if it is parallel to the first line?
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A solid consists of a cone on top of a cylinder with a radius equal to that of the cone. The height of the cone is 33 and the height of the cylinder is 14 . If the volume of the solid is 2750 pi, what is the area of the base of the cylinder?
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A triangle has corners at points A, B, and C. Side AB has a length of 35 . The distance between the intersection of point A's angle bisector with side BC and point B is 14 . If side AC has a length of 36 , what is the length of side BC?
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What is the arc length of f(x)= lnx on x in [1,3] ?
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What is f(x) = int (x^2-2x)(e^x-sinx) dx if f(1 ) = 2 ?
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How do I evaluate cos(pi/10) without using a calculator?
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A factory produces bicycles at a rate of 80+0.5t^2-0.7t bicycles per week (t
in weeks). How many bicycles were produced from day 15 to 28?
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How do you find the average rate of change of f(x)=2x^2+2 from 4 to 6?
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What is the 8th term of the geometric sequence if a_3 = 108 and a_5 = 972?
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How do you write a polynomial function of least degree with integral coefficients that has the given zeroes 1 + 2i, 1- i?
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Question #028d7
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What is int (2x^3-3x^2-4x-3 ) / (-6x^2+ 3 x -4 )dx?
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How do you evaluate the integral of int ( (2x^4 + 5x^3 + 17x^2 - 42x + 19) / (x^3 + 2x^2 + 5x - 26) ) dx?
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How do you integrate int (x^3 + 2x - 1) / (2x^2 - 3x - 2) using partial fractions?
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How do you integrate int (1-x^2)/((x-9)(x-5)(x+2))dx using partial fractions?
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How do you write the expression (sqrt(2) - i)^6 in the standard form a + bi?
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Question #a9735
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How do you solve 4r + 5s - 3t = 9, 6r - 3s + 1t = 67, 2r + 0s + 1t = 22?
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How do you integrate int x^2 e^(4-x) dx using integration by parts?
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The base of a triangular pyramid is a triangle with corners at (7 ,6 ), (4 ,1 ), and (3 ,2 ). If the pyramid has a height of 7 , what is the pyramid's volume?
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How do you find all the zeros of P(x)=x^4+6x^2+9?
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An ellipsoid has radii with lengths of 6 , 7 , and 12 . A portion the size of a hemisphere with a radius of 8 is removed form the ellipsoid. What is the remaining volume of the ellipsoid?
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The population of Detroit, Michigan was 951,300 in 2000. Detroit has been experiencing a population decline of 1.4% per year since 2000. What is the projected population for 2005 in Detroit?
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What is int (-x^3-2x-3 ) / (7x^4+ 5 x -1 )?
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How do you find the determinant of ((5, 2, 0, 0, -2), (0, 1, 4, 3, 2), (0, 0, 2, 6, 3), (0, 0, 3, 4, 1), (0, 0, 0, 0, 2))?
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How do you find the determinant of ((1, 1, 1, 1), (1, 3, 9, 27), (1, 5, 25, 125), (1, 7, 49, 343))?
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How do you integrate int x^3 / ((sqrt(16+x^2))^3) dx using trigonometric substitution?
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How do you integrate int e^x/sqrt(-e^(2x)-20e^x-96)dx using trigonometric substitution?
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What is the area of the largest isosceles triangle that can be inscribed in a circle of radius 4?
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Question #9aee7
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Question #50f9b
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Cups A and B are cone shaped and have heights of 28 cm and 15 cm and openings with radii of 7 cm and 3 cm, respectively. If cup B is full and its contents are poured into cup A, will cup A overflow? If not how high will cup A be filled?
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Question #3c646
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How do you solve -x + y + z = -1 and -x + 5y - 15z = -13 and 3x - 2y - 7z = 0 using matrices?
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Cups A and B are cone shaped and have heights of 38 cm and 25 cm and openings with radii of 8 cm and 13 cm, respectively. If cup B is full and its contents are poured into cup A, will cup A overflow? If not how high will cup A be filled?
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What was the result of the Battle of El Alamein?
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How did Otto von Bismarck, the chancellor of Prussia, lead the drive for German unity?
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Points (6 ,7 ) and (7 ,5 ) are (2 pi)/3 radians apart on a circle. What is the shortest arc length between the points?
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Question #6b9d0
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Triangle A has an area of 84 and two sides of lengths 18 and 15 . Triangle B is similar to triangle A and has a side of length 5 . What are the maximum and minimum possible areas of triangle B?
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A bookmark is like a rectangle with a semicircle attached at both ends. The rectangle is 12 cm long and 4 cm wide. The diameter of each semicircle is the width of the rectangle. What is the area of the bookmark?
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What are the equations of the planes that are parallel to the plane x+2y-2z=1 and two units away from it?
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If A = <8 ,1 ,-5 >, B = <6 ,5 ,-8 > and C=A-B, what is the angle between A and C?
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How to construct triangle LMN , such that LN = 8 cm and ∠ LMN = 80 degrees and LM- MN= 3 cm?
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Why did the Napoleonic Wars represent a watershed in the history of warfare?
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Question #74eaa
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Question #5feb3
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