Answers edited by Evan

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• How to do 191st question?
  
• How many moles of helium is present in 10g of helium?
  
• What are the stimuli that turn on and off the thirst center?
  
• How do you combine #11/(5x)-1/(5x)#?
  
• How do you convert repeating decimals into fractions?
  
• From the word 'propriety', how do you find all the possible words / different arrangements of all the letters? (answer is 90720)
  
• A Pacific salmon can swim at a maximum speed of 8 mi/h. The function #y =8x # describes how many miles #y# the fish swims in #x# hours. What is the number of miles the fish swims in 3.5 hours?
  
• Solve for #x# and #y#, given that #x+8y=160# and #3x+5y=119#?
  
• Is phenol more acidic than acetylene?
  
• How do you solve the equation #x^2-8x=-9# by completing the square?
  
• During external respiration, are gases exchanged between the outside air and the alveoli, the alveoli and the blood, the blood and cells, the outside air and blood in the dermis, or the cytosol and mitochondria?
  
• For which t-values does the system have none, one or infinite solutions? #4(t+4)x+21y=56 ;color(white)("dd")12x+3ty=24#
  
• You open a deposit account that pays 2.75% annual interest compounded monthly. There was an opening deposit of $500 and further deposits of $500 at the beginning all the following months. ?
  
• Functions, Help?
  
• In a two-digit number, the square of the units digit is greater than the tens digit by 2. The sum of the number and the number formed by reversing its digits is 110. What is the two-digit number? Solve using simultaneous equation.
  
• Find the maxima and minima of function:- #y=2x^3-9x^2-24x+15#?
  
• What are concussions a form of?
  
• What is separating a solid from a liquid by evaporating the liquid called?
  
• I need help to Show an equation that relates the House Price, P to the square footage, #ft^2#, and then use this equation to predict the price of a #20,200 ft^2# house?
  
• What benefit do fossils provide humans?
  
• If you got 3 wrong out of 35 possible answers what would be the percentage?
  
• Find all real numbers of #s# such that #-2(s - 7) > 4s + 8#. Give your answer in interval notation?
  
• What are the points of inflection of #f(x)= (x^2 - 8)/(x^2+3) #?
  
• ABCD is a parallelogram. Prove that AC and PQ bisect each other.?
  
• How do i solve this?
  
• Kate has a balance of $ 1,080 on her credit card. If she makes no purchases and pays $ 90 each month, will her credit card balance be payed off in a year? Explain.
  
• #cot765^@ = #? #sec765^@ = #? #csc765^@ = #?
  
• What is the smallest perimeter possible for a rectangle of area 16 in^2?
  
• Using a straight edge and compass construct The perpendicular bisector of FG ?
  
• What are the stationary points of #y=x^3/(1-x^2)#?
  
• Evaluate the indefinite integral:∫sqrt(10x−x^2)dx ?
  
• The variables x and y vary inversely. How do you write an equation that relates x and y given x = 15, y = 5?
  
• How do you multiply #(4a ^ { 3} ) ( 2a ^ { 2} )#?
  
• Rationalize #(sqrt(6) + sqrt(5))/(sqrt(5) - sqrt(3))#?
  
• Integration of sqrt 1+x^4 dx=?
  
• How do you find the intercepts for #4x+3y=8#?
  
• What are the points of inflection of #f(x)=(3x^2 + 8x + 5)/(4-x) #?
  
• The length of a rectangle is 4 times its width x. If the rectangle is inscribed in a circle, how do you determine the area of the circle as a function of x?
  
• Assume y varies inversely as x, how do you write the equation given y=-4 when x=-3?
  
• #y=x/(x^2+1)#, find maxima and minima?
  
• How do you solve #abs(x+17)+10=70#?
  
• How do you round 0.013946 to three significant figures?
  
• Evaluate #int_0^1 (t/(1+t^3))dt#?
  
• The most commonly used skin antiseptic, rubbing alcohol, is how many percent alcohol?
  
• Is the sequence - 1,6,-36,216 geometric?
  
• What is the the value of a? Also, prove the following:
  
• A car that cost $6100 was sold 2 years later at a 3% loss. How much did it sell for?
  
• I need help to Show an equation that relates the House Price, P to the square footage, #ft^2#, and then use this equation to predict the price of a #20,200 ft^2# house?
  
• Who were the kulaks?
  
• Why does a reaction with nitric acid produce nitrogen gas?
  
• Explain how water moves up a plant via transpiration?
  
• What is the slope and y-intercept of this line y = x – 3?
  
• How do you combine #\frac { 1} { x - 3} + \frac { 1} { ( x - 3) ^ { 2} } - \frac { 1} { ( x - 3) ^ { 3} }# into one term?
  
• What are the definition of the three types of chemical reactions?
  
• A belt is fitted tightly around two wheels of radii #20 cm# & #5 cm# which are #5 cm# apart. How do you show that the length of the belt is #30(pi + sqrt3) cm#?
  
• Four times the sum of a number and 9 is equal to 7?
  
• Simplify #(n!)/((n+1)!)-((n-1)!)/(n!)#?
  
• Dave has 3 times as many sweets as Will. Debbie has 3 sweets less than Dave. Together, they have 53 sweets. What is the simplest ratio between the number of sweets that Will has to the number that Dave has to the number that Debbie has?
  
• How come on my "thank you notes" that some people sent it from e.g 'someone from San Francisco, America" and then some people have their names attached to it? I hope my question makes sense
  
• How do you solve #sqrt(4x+1)+3=0#?
  
• What are the roots of the equation #x^2-5x+1=0#?
  
• Is y=2x-9 a direct variation and if so, what is the constant?
  
• The length of a rectangle is 8cm greater than its width. How do you find the dimensions of the rectangle if its area is 105cm²?
  
• If #y# varies inversely with #x#, and if #y=10# when #x=1.2#, what is the value of #x# when #y=30#?
  
• How do you write these numbers in order from least to greatest: 6.139, 6.38, 6.3, 6.319?
  
• How do you express the number #7,832,940,065# in English?
  
• How do you factor #x^9 - x^6 - x^3 + 1#?
  
• Solve for #x# in #|2x-4| >= -5#? Why doesn't the usual method work in this case?
  
• If Ajay gives Vijay ₹5, Ajay would have twice as much as Vijay. If Vijay gives Ajay ₹15, Ajay would have 8 times as much as Vijay. How much does Ajay have?
  
• What is the Square Root of -12?
  
• How do you solve #x^2 + 10x + 13 = 0# by completing the square?
  
• Is 193 a perfect square?
  
• How do you simplify # (4 times 10^8)^-2#?
  
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