Answers edited by yumean1119

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• When must parentheses be used in chemical formulas?
  
• Question #27e55
  
• A train travels a distance of 480 km at a uniform speed. If the speed had been 8 km/h less, then it would have taken 3 hours more to cover the same distance. What is the speed of the train?
  
• Question #ef673
  
• An object moving at #8.293485234671349xx10^23094#m/s stops after #12398475#s what was the object's acceleration?
  
• If I have a 20 sided dice and roll it twice, what are the odds that I will roll the same number twice?
  
• Question #515bb
  
• Question #03002
  
• Question #75ec3
  
• How do you find all the critical points to graph #36x^2 - 100y^2 - 72x + 400y = 3964# including vertices, foci and asymptotes?
  
• Question #3ecb0
  
• How to get a mathematical equation for this line of numbers: 30, 59, 91, 124 ,159, 233, 273 and 314?
  
• Please help me?
  
• A transition matrix T tells us how to get from one state to another. That is Sn=TSn-1, where Sn is the distribution vector at time n and Sn-1 is the distribution vector at time n-1. We can conclude? Sn=TSn/2 Sn=TS0 Sn=TnSn-1 Sn=TnS0
  
• How to do this regression question?
  
• Question #1d0dd
  
• Question #f7924
  
• Are the bond angles in water, and carbon tetrachloride the same?
  
• An equilibrium mixture of 2 moles each of #PCl_5#, #PCl_3# and #Cl_2# in V ltrs. in T temp. has a total pressure of 3 atm. #Cl_2# is added at the same temp. and pressure till the volume is doubled. What is the number of moles of #Cl_2# added? Thank you:)
  
• Please answer?
  
• Write a net ionic equation for the reaction that occurs when barium sulfite (s) and excess hydrochloric acid (aq) are combined. Note: Sulfites follow the same solubility trends as sulfates?
  
• "There is no mother but loves her child." In this sentence, what type of part of speech is 'but'? Could you please explain your answer?
  
• Can someone answer this while showing the working out for this question?
  
• What is the area enclosed by #r=theta^2cos(theta+pi/4)-sin(2theta-pi/12) # for #theta in [pi/12,pi]#?
  
• Question #8c624
  
• Question #07e50
  
• How to prove that?
  
• What is the difference in intensity of an earthquake of 6.2 and 4.5?
  
• I've been struggling in this sound wave question for more than 30min, can someone help me please?
  
• Question #db134
  
• What problems weakened shogun rule in Japan in the mid-1800s?
  
• Question #f4fd7
  
• How do you integrate #int 1/ (x^4 +1)# using partial fractions?
  
• Question #f93d9
  
• Question #9235b
  
• A lottery claims that 10% of tickets win a prize. How many tickets should you purchase to be more than 50% sure of winning a prize?
  
• Two charges of # -2 C # and # -3 C# are positioned on a line at points # 4 # and # -1 #, respectively. What is the net force on a charge of # 5 C# at # 0 #?
  
• What is the area?
  
• In triangle ABC, a=9, c=5, and angle B = 120 degrees. What is the measure of angle A to the nearest degree?
  
• Question #3b038
  
• Question #6bfa5
  
• Question #733f9
  
• What are common mistakes students make when finding the limit of an infinite sequence?
  
• Circle A has a radius of #2 # and a center of #(6 ,5 )#. Circle B has a radius of #3 # and a center of #(2 ,4 )#. If circle B is translated by #<1 ,3 >#, does it overlap circle A? If not, what is the minimum distance between points on both circles?
  
• What are the indicators (litimus ,mythly orange ) acids ,base or neutral ?
  
• Question #61a9f
  
• What is mass spectroscopy?
  
• Question #08c52
  
• Question #7b377
  
• Some very hot rocks have a temperature of #240 ^o C# and a specific heat of #240 J/(Kg*K)#. The rocks are bathed in #16 L# of water at #70 ^oC#. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?
  
• Question #3d879
  
• Question #59eb8
  
• Question #e8275
  
• How does #x^5=32#, a 5th degree polynomial, have 5 zeroes?
  
• Question #54f58
  
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