Answers edited by Ricardo A.

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• How was the world created?
  
• How does accretion explain planet formation?
  
• Question #de0ac
  
• Physicians often ask for urine samples collected over a 24-hour period, rather than a single sample. Why?
  
• Curtis can unload a truckload of hay in 30 minutes, but it takes Ronnie 40 minutes to do the same. Working together, how many minutes will it take them to unload 35 truckloads of hay?
  
• Given #a_1=4#, what is the 7th term of the recursive sequence using #a_n= 2a_(n-1) - 3#, for #n>=2#?
  
• The product of two consecutive negative integers is 600. What is the value of the lesser integer?
  
• If #5*sinA = 3# , then what is the value of #tanA#?
  
• Question #47ae6
  
• How much space in the universe does Earth take up? How would you describe this as an analogy, like a grain of sand in comparison to our entire Earth?
  
• Which is the probability of rolling the following sums with two number cubes?
  
• What would the formula for the nth term be given -2, 6, -18, 54...?
  
• How do you solve #\frac{70}{9} n = - 7#?
  
• How do you factor #36p^4-48p^3+16p^2#?