Answers created by R. Nguyen

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• How do you graph using the intercepts for # -10x+7y=-25#?
  
• Solve dy/dx=x+2y-3/2x+y-3?
  
• What is the domain and range of #F(x) = 5/(3-cos2x)#?
  
• What is the interval of convergence for the Taylor series of #f(x)=e^(x^2)#?
  
• Domain of a function?
  
• A semi-truck traveling at an average speed of 70 miles per hour covers a distance of 35 miles. How long did it take?
  
• Show by calculation that the equation cosx-2x=0 has a root between x=0 and x=0.785.how to show this ?
  
• An object is at rest at #(3 ,8 ,8 )# and constantly accelerates at a rate of #5/4 m/s^2# as it moves to point B. If point B is at #(2 ,9 ,5 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
  
• Is it true that if g is one-to-one then f o g must be one-to-one? Give a proof or a counterexample.
  
• I have done half but i am not able to find angle in part2?
  
• How do you use the first part of the Fundamental Theorem of Calculus to find the derivative of #y = int 3(sin(t))^4 dt# from #e^x# to 1?
  
• How do you integrate #tan^4x sec^4x dx#?
  
• Find the gradient of the curve x=y+1/y at the point (2.5, 2). ?
  
• I stumbled across this... What are the values of x, y and z?
  
• What is the general equation for the arclength of a line?
  
• How do you simplify #root4(16)#?
  
• How do you solve #e^x>30#?
  
• How do you determine the intervals where #f(x)=3x-4# is concave up or down?
  
• How do you write the standard form of the equation of the line that is perpendicular to y=-4/3x-7 and contains (-5,-7)?
  
• Solve the following differential equation X(dy/dx)+2y=(x^2)logx?
  
• How do you solve #abs(6x+5)<-1#?
  
• What is the center and radius of #x^2+y^2=4y-11-8x#?
  
• Question 1: Line AB contains points A (0, 1) and B (1, 5). The slope of line AB is...? −4 negative 1 over 4 1 over 4 4
  
• How to integrate #int_(1"/"2)^1 4^x "d"x#?
  
• How do you simplify #(2-sec^2x)/(sec^2x)#?
  
• How do you use a calculator to evaluate #cot1.35#?
  
• Is #f(x)=cos(-x)# increasing or decreasing at #x=0#?
  
• How do you find "k" if y varies inversely as x and if #y=24# when #x=3#?
  
• How do you factor #x^4-8x^2+16#?
  
• How do you solve #10x^2=-7x+6# using the quadratic formula?
  
• If sec ø = 5/4 and 0º<ø<90º how do you find sec 2ø ?
  
• 3𝑠𝑖𝑛2𝑥 = 2𝑠𝑖𝑛𝑥𝑐𝑜𝑠𝑥 is this a provable? if not, solve the equation for -180 < 𝑥 < 180?
  
• Use the suggested substitution to write the expression as a trigonometric expression. Simplify your answer as much as possible. Assume 0 ≤ θ ≤ π2. ?
  
• Rewrite the following in the form log(c)? Log(2)+log(4)
  
• What is 5/8x<10?
  
• The half life of iron-59 is 44.5 days. After 133.5 days, 2.76 g of iron-59 remains. What was the mass of the original sample?
  
• Question #fe8f6
  
• A rectangle is 4 times longer than it’s width. The perimeter of the rectangle is 30 cm. Find the dimensions?
  
• Question #4c20e
  
• Question #e64bc
  
• Need help on Algebra 1 hw?
  
• What is the smallest number for three consecutive even integers whose sum is 28?
  
• Through #(1,7)#; parallel to the line passing through #(2,5)# and #(-2,1)#?
  
• Let R be the region in the first quadrant bounded by the graph of #y=8-x^(3/2)#, the x-axis, and the y-axis. What is the best approximation of the volume of the solid generated when R is revolved about the x-axis?
  
• Question #22a7a
  
• When you take my value and multiply it by -8, the result is an integer greater than -220. If you take the result and divide it by the sum of -10 and 2, the result is my value. I am a rational number. What is my number?
  
• Digit d is randomly selected from the set {1,2,3,4,5,6,7,8,9}. Without replacement of d, another digit, e, is selected. What is the probability that the two-digit number de is a multiple of 3?
  
• How do you graph the parabola #f(x)=x ^2 + 3x-10# using vertex, intercepts and additional points?
  
• How to find the lowest common multiple?
  
• Question #90a80
  
• Question #31fcf