Answers edited by MAXIMILIAN C.

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• A river boat travels from port A to port B, a distance of 15.0 km downstream, in 1 hour 40 minutes. The return journey takes 2 hours 30 minutes. Calculate: (a) the boat speed relative to the water? (b) the speed of the river?
  
• Simplify the rational expression. State any restrictions on the variable? Please check my answer and explain how I get to my answer. I know how to do the restrictions its the final answer that I'm confused about
  
• Given theta = 3pi/4 How does one calculate cos^2 theta, cos(-theta), and cos(2) theta?
  
• Given θ = 60∘, 0∘ < α < 360∘ and α ≠ θ, find α, such that:?
  
• Help with precalc homework?!
  
• What is x in #x^2018+1/x=x^2017+1# equal to?
  
• A rectangular room measures 12ft by 15ft. the entire room is to be covered with rectangular tiles that measures 5in by 4in. if the tiles are sold for &2.50 a dozen what will it cost to tile the room?
  
• What are the important points to graph #y=sin 2x#?
  
• How do you find the slope and y intercept to sketch #5x-2=0#?
  
• Can alternate interior angles be supplementary?
  
• How do you find the domain and range for #y = 3 cos 4x#?
  
• Could someone please help me solve this?
  
• Simplify the rational expression. State any restrictions on the variable? Please check my answer/correct it
  
• If a rectangle measures 8 feet on the short side and 9.8 on the long side . what is the area of the rectangle in square feet?
  
• How do you solve #12x=-88#?
  
• How do I find the angle of AHC?
  
• One side of a rectangle is 6 longer than the adjacent side. The area is 187. What are the dimensions?
  
• What are the odds and probability of rolling 5 dice, and all 5 dice are the same number?
  
• Is there a way to search for unanswered questions of members from particular countries so that one might be able to expand on the number of different countries in which one helps students? And how to do so?
  
• Is 193 a perfect square?
  
• You have a pitcher that holds 39.3 oz of lemonade. If each glass holds 8.8 oz, how many glasses can you completely fill?