Answers created by JMicheli

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• A .580kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. The velocity of the rock is 4.50 m/s. What the centripetal force acting on the rock?
  
• Is #f(x) =sqrt((x+2)(x-4))-3x^2# concave or convex at #x=-1#?
  
• An object with a mass of # 15 kg# is lying on a surface and is compressing a horizontal spring by #10 cm#. If the spring's constant is # 8 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?
  
• How do you differentiate the following parametric equation: # x(t)=e^t/(t+t)^2-t, y(t)=t-e^(t) #?
  
• How do you write an nth term rule for #1,-4,16,-64# and find #a_6#?
  
• How do you simplify #4/15 + 2/4#?
  
• How do you solve #x-7=13#?
  
• How do you simplify #2+6(7n-6)#?
  
• How do you convert #y=x-2y+x^2y^2 # into a polar equation?
  
• How do you simplify #sqrt72-sqrt8+sqrt128#?
  
• How do you differentiate #sqrt(e^(x-y^2)-(xy)^2#?
  
• How do you solve #ln(x-2)-ln(x+2)=2#?
  
• By how much does #y = 3(x-2)# translate the line #y=3x# horizontally?
  
• What is the next term in the pattern: #.1, 1/2, 1/4, 1/8, 1/16..#:?
  
• How do you solve #sqrt(x-3)-sqrtx=3#?
  
• How do you differentiate # y =2x^3(x^3 - 3)^4 # using the chain rule?
  
• How do you solve #-5x^2=-500#?
  
• How do you write an equation in point slope form given (3, 5); slope = -9?
  
• How do you calculate #sqrt((tan60°+1)/(tan60°+1)#?
  
• How do you convert #(1,(pi)/2) # to rectangular form?
  
• How do you find the sum of the infinite geometric series #10(2/3)^n# when n=2?
  
• How many protons would a positively charged isotope ions of O-18 have?
  
• Is the function #y=x-sin(x)# even, odd or neither?
  
• How do you evaluate #x^2/y + x^2/z# for #x=6, y=-4,# and #z=-2#?
  
• How do you solve #w^2/24-w/2+13/6=0# by completing the square?
  
• How do you graph and list the amplitude, period, phase shift for #y=cos(-3x)#?
  
• What is the Cartesian form of #( 4, (5pi)/2 ) #?
  
• How do you simplify #sqrt(2/3)#?
  
• The mileage of a trip is 975 miles. You average 65 miles per hour and the trip takes 16 hours. What is the total length of time of your rest stops?
  
• How do you find the center and radius of the circle #x^2 + y^2 - 4x - 14y + 29 = 0#?
  
• How do you simplify #sqrt(2a^2b) times sqrt(4a^2)#?
  
• How do solve the following linear system?: #-4x + 4 = -4y, 7x + 6y + 11 = 0 #?
  
• How do you find all zeros of the function #f(x)=(x+1/2)(x+7)(x+7)(x+5)#?
  
• What is the equation of the parabola that has a vertex at # (7, 9) # and passes through point # (0, 2) #?
  
• How do you find the maximum value of #y = −2x^2 − 3x + 2#?
  
• What are the first and second derivatives of # g(x) = cosx^2 + e^(lnx^2)ln(x)#?
  
• How do you solve and write the following in interval notation: #-3 ≤ (x − 4) / 2 <4#?
  
• What is the relationship between patriarchy and sexism?
  
• What is the domain and range of #y = cos|x|#?
  
• How do you differentiate the following parametric equation: # x(t)=tlnt, y(t)= cost-tsin^2t #?
  
• Question #743f2
  
• What is the equation of the line that is normal to the polar curve #f(theta)=-5theta- sin((3theta)/2-pi/3)+tan((theta)/2-pi/3) # at #theta = pi#?
  
• What is the equation of the line passing through #(180,3), (2,68)#?
  
• What is the derivative of this function #f(x) = sin (1/x^2)#?
  
• How do you solve the system #x^2+y^2=9# and #x-3y=3#?
  
• How do you translate the words into a mathematical expression: 7 plus the quantity of 8 minus 6?
  
• What is the distance between #(4 ,( 7 pi)/8 )# and #(-1 ,( 3pi )/2 )#?
  
• The position of an object moving along a line is given by #p(t) = cos(t- pi /3) +1 #. What is the speed of the object at #t = (2pi) /4 #?
  
• How do you multiply #(4x^2 – 9)(8x^2 + 3)#?
  
• What is the domain and range of #h(t)=4/t #?
  
• How do you solve #(4-f)/5=(f+1)/3#?
  
• What is the period of #y=sin(3x)#?
  
• 4 complete waves pass a given point in 8 seconds, what is the frequency of the wave?
  
• What is the cross product of #<-1, 2 ,7 ># and #<-3 ,1 ,-1 >#?
  
• Question #cbcb6
  
• How do you use Riemann sums to evaluate the area under the curve of #f(x) = 2-x^2# on the closed interval [0,2], with n=4 rectangles using midpoint?
  
• UV light is responsible for sun tanning. How do you find the wavelength (in nm) of an ultraviolet photon whose energy is #6.4 x 10^-19#?
  
• What is the possessive form of "class"? I am having trouble.
  
• How do you differentiate #y= x+((x+sin^2x)^3) ^4#?
  
• Question #f736b
  
• What happens when two sound waves meet in constructive interference?
  
• Mars has an average surface temperature of about 200K. Pluto has an average surface temperature of about 40K. Which planet emits more energy per square meter of surface area per second? By a factor of how much?
  
• How do you determine if the equation #y=(1/2)^x# represents exponential growth or decay?
  
• Let #f(x) = 7x^2+5# and g(x) = x-3, how do you find the composite function (f o g)(x)?
  
• How can you find the taylor expansion of #sqrt (x) # about x=1?
  
• What units are used to measure the speed of a wave?
  
• A ball is dropped straight down from a height of #12# feet. Upon hitting the ground it bounces back #1/3# of the distance it fell. How far will the ball travel (both upward and downward) before it comes to rest?
  
• What is the projection of #<3,4,-1 ># onto #<-1,3,-6 >#?
  
• What is #int(cos(x))^4 dx#?
  
• What is the derivative of #f(t) = (e^(t^2-1)-t, -t^3-4t ) #?
  
• How do you differentiate #y = cos(cos(cos(x)))#?
  
• For what values of x is # f(x) = -sqrt(x^3-9x # concave or convex?
  
• Question #71aff
  
• How do you find the inverse of #A=##((2, 4, 1),(-1, 1, -1), (1, 4, 0))#?
  
• What is the equation of the line tangent to #f(x)=y=e^x sin^2x# at #x=sqrtpi#?
  
• A charge of #6 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #24 J# to #18 J#, what is the voltage between points A and B?
  
• If an object is moving at #10 m/s# over a surface with a kinetic friction coefficient of #u_k=5 /g#, how much time will it take for the object to stop moving?
  
• A ball is thrown vertically upward at 10 m/s from the edge of a building that is 50 m high. How long does it take the ball to reach the ground?
  
• How do you solve #3x^2 - 15x + 18 = 0 # using the quadratic formula?
  
• What is the standard form of a polynomial #(4x^2+2x+5)+(7x^2-5x+2)#?
  
• How do you simplify #1.4 div 9.8#?
  
• Question #091e6
  
• An object travels North at #6 m/s# for #2 s# and then travels South at #1 m/s# for #4 s#. What are the object's average speed and velocity?
  
• How do you graph #y = sin (x + 30°)#?
  
• An object with a mass of #6 kg# is revolving around a point at a distance of #8 m#. If the object is making revolutions at a frequency of #6 Hz#, what is the centripetal force acting on the object?
  
• Car A, traveling from New York to Miami, has a speed of 25 m/s. Car B, traveling from New York to Chicago, also has a speed of 25 m/s. Are their velocities equal?
  
• How do you solve #9x-5y=-44# and #4x-3y=-18# using matrices?
  
• How do you graph #y = 3^x# by plotting points?
  
• How do you write the definite integral to find the smaller area cut from the circle #x^2 + y^2 = 25# by the line x = 3?
  
• A box with an initial speed of #4 m/s# is moving up a ramp. The ramp has a kinetic friction coefficient of #7/4 # and an incline of #(2 pi )/3 #. How far along the ramp will the box go?
  
• An electric toy car with a mass of #2 kg# is powered by a motor with a voltage of #4 V# and a current supply of #8 A#. How fast can the toy car accelerate from rest to #3 m/s#?