Answers edited by jim p.

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• An airplane took 4 hours to fly 1200 miles against a headwind. The return trip with the wind took 3 hours. Find the speed of the plane in still air and the speed of the wind?
  
• How do you find the exact value of #tan^-1 0#?
  
• Question #59ae1
  
• What is the axis of symmetry and vertex for the graph #y = x^2 – 16x + 58#?
  
• How do you solve #3\leq \frac { - 6+ x } { 2}#?
  
• The sum of a number and its reciprocal is equal to 4 times the reciprocal, What is the number?
  
• Question #e1997
  
• Question #a678e
  
• Need help ?
  
• I've been trying so hard to solve this exercise but I honestly can't. It would be so nice of you if you can help me?. Thank you very much!
  
• Question #8f8da
  
• If #6(y-3) = -3(x+1)#, what does #y# equal?
  
• How do you find the polar coordinates given the rectangular coordinates (-1/4, -sqrt3/4)?
  
• Question #16a73
  
• Question #c73c7
  
• Question #d5958
  
• Question #30d1f
  
• How do you solve #2.5( 2z + 5) = 5( z / 2.5)#?
  
• What is the vertex form of #2y=5x^2-3x+11 #?
  
• A circle has a center that falls on the line #y = 7/6x +1 # and passes through #(9 ,8 )# and #(2 ,5 )#. What is the equation of the circle?
  
• How do you find the domain and range of #f(x) = x^2/(1 + x^2)#?
  
• Question #9cdcc
  
• How do you simplify #\frac { 10h ^ { 2} - 17h + 3} { 3h - 3} \cdot \frac { h - 1} { 10h ^ { 2} - 17h + 3}#?
  
• Question #0a7e5
  
• Question #530ce
  
• A body thrown vertically upward returns to the earth in three seconds.(a)what was the initial velocity of the body (b)what height did the body reach? Neglect air resistance.
  
• Question #d15b1
  
• How do you factor #8x^2 - 4x - 24#?
  
• What is the derivative of #g(t)=(pi)(cos t - 1/t^2)#?
  
• How do you solve #x+y+z=-9#, #x-y+5z=-19#, #5x+y+z=-29# using matrices?
  
• What is the equation of the line that is parallel to #y = 3x +6# and passes through the point (4,7)?
  
• Question #43d72
  
• How do you find the domain and range of #g(x) = abs(x+5) #?
  
• What is the reciprocal of #6 2/7#?
  
• Question #c34f3
  
• How do you find the domain of #f( x ) = \frac { 8} { x - 13}#?
  
• How do you express #1/(5sqrt(x^2))# as a fractional exponent?
  
• What is the midpoint between #B(3, -5, 6)# and #H(5,3,2)#?
  
• What is the distance between the following polar coordinates?: # (2,(3pi)/8), (7,(3pi)/8) #
  
• How do you convert the following complex number into its polar representation: 3i?
  
• How do you evaluate #(\frac { x ^ { - 1/ 4} x ^ { 1/ 6} } { x ^ { 1/ 4} x ^ { - 1/ 2} } ) ^ { - 1/ 3}#?
  
• Question #f7708
  
• How do you graph the parabola #y=x^2-7x+6# using vertex, intercepts and additional points?
  
• How do you find the limit #lim 5^(x^2-2x+1)# as #x->3#?
  
• Question #390b7
  
• Question #6c1c9
  
• Question #f6ba4
  
• If a car averages #50 1/3# miles per hour, how many hours will it take to go #47 1/2# miles?
  
• How do you solve #9+ 4x + x = 14#?
  
• How do you graph # y=2+sin(1/2x)#?
  
• How do you find the domain and range of # y = sqrt(x-3)#?
  
• The library charges you a fine when you return a library book late. If it is one day late you are charged $0.15, if it is two days late you are charged $0.30. You owe the library $3.75. How many days overdue is your library book?
  
• Is #f(x) =(x-2)^2/(x-1)# concave or convex at #x=2#?
  
• Question #8718e
  
• What is the standard form of a polynomial #(7p – 8)(7p + 8)#?
  
• How do you graph #2x+4y=-4# using intercepts?
  
• Question #912b3
  
• Question #2721e
  
• A projectile is shot from the ground at an angle of #pi/8 # and a speed of #4 /9 m/s#. Factoring in both horizontal and vertical movement, what will the projectile's distance from the starting point be when it reaches its maximum height?
  
• How do you evaluate #\frac { 3x - 21} { 6x - 42}#?
  
• Question #be3fa
  
• Question #7e545
  
• Question #6c2e5
  
• How do you find the second derivative of #y=Acos(Bx)#?
  
• What is the domain and range of #1/(x-7)#?
  
• Question #0f718
  
• Question #d8392
  
• How do you find the domain of #f(x) =10x-4 / (x-1)#?
  
• Question #f3e56
  
• How do you find the vertex and intercepts for #y=8(x-10)^2-16#?
  
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