Answers edited by Ratnesh Bhosale

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• What group is sodium in?
  
• How do you integrate ? 1/(x^2+9)^(1/2)
  
• How do you solve using the completing the square method # x^2 – 4x + 1 = 0#?
  
• Question #10e48
  
• How do you solve the system #2x-3y=21# and #y=3-x# using substitution?
  
• How to prove #sin(theta+phi)/cos(theta-phi)=(tantheta+tanphi)/(1+tanthetatanphi)#?
  
• A boat initially traveling at 10 m/s accelerates uniformly at the rate of 5.0m/s^2 for 10 seconds. How far does the boat travel during this time?
  
• Question #0a033
  
• If #h(5-2x) = sqrt(x^2+3x+5)# for all real number #x#, what is the value of #h(3)#?
  
• A radio station had 105 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees. How many tickets did they give away to employees?
  
• If the velocity of light c, gravitational constant G and Planck's constant h are chosen h as fundamental units, what are the dimensions of mass, length and time in the new system?
  
• How do you factor #4y^2 + 25y + 6#?
  
• If F:R>R and g:R>R defined by f(x)=2x+1 and g(x)=2^x find the equation for (gof) and (fog)?
  
• A ball with a mass of #7 kg# moving at #1 m/s# hits a still ball with a mass of #10 kg#. If the first ball stops moving, how fast is the second ball moving? How much kinetic energy was lost as heat in the collision?
  
• What is the moment of inertia of a pendulum with a mass of #5 kg# that is #4 m# from the pivot?
  
• How do you solve #12x + 16 <= 10x#?
  
• How do you factor the expression #21x^2+29x-10#?
  
• How do you solve using completing the square method #x^2+3x+1=0#?
  
• How do you graph #y=1/2tan(1/2x+pi/4)#?
  
• How do you write the equation in point slope form given slope of -1/3 and passing through the point (6, -4)?
  
• How do you find the zeros of the polynomial function #f(x) = x^3 + x^2 -42x#?
  
• How do you simplify #( 8 + sqrt 6) /sqrt 2#?
  
• How do you find the domain and range of #sqrt(8-x)#?
  
• If you travel for #(7t)/60# hours at #(80r)/9# mi/h, how far have you gone?
  
• How many mL of 0.655 M phosphoric acid solution are required to neutralize 15 mL of 1.284 M #NaOH# solution?
  
• A triangle has corners at #(3 ,8 )#, #(5 ,9 )#, and #(8 ,5 )#. What is the area of the triangle's circumscribed circle?
  
• An organic compound contains 20.0 % Carbon, 6.66% Hydrogen, 47.33% Nitrogen and the rest was Oxygen. Its molar mass is 60 gm. The molecular formula of the compound is? (A) #CH_4 N_2 O# (B) #CH_2 NO_2# (C) #C_2H_6 NO# (D) #CH_18 NO#
  
• How do you write the equation in slope intercept form given (4, 5), (2, 2)?
  
• How do you find the slope and y-intercept for the graph of the equation: 12x - 4y = 96?
  
• Question #a4968
  
• A charge of #-2 C# is at #(4, -5)# and a charge of #1 C# is at #(-3 , -9 ) #. If both coordinates are in meters, what is the force between the charges?