Answers edited by Jake M.
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Shehkar pulls 31 coins out of his pocket. each coin is either a dime or a quarter. if he has a total of 5.95, how many dimes does he have?

Find the value of #(dr)/dt# at #t=0# if #r=(theta^2 +7)^(1/3)# and #theta^2t + theta =1#?

What is the surface area of the solid created by revolving #f(x) = e^x+e^(x) , x in [1,2]# around the x axis?

For what values of x is #f(x)= e^x/(x^2x) e^x# concave or convex?

Show that?
#(P(N', n))/(P(N,n)) ~~ ((N')/N)^n#
#(N', N, n) in ZZ^+#
#(N', N )">>" n#
#P(x,y) = (x!)/((xy)!)#
Stirling Approx allowed

Can anybody please solve it?

Question #c0954

How do you solve #(9z+5)/4+18<26# and graph the solution on a number line?

Kingda ka at six flags has a 55m drop. The rollercoaster has a mass of 8000kg. How fast it be travelling when it reaches the bottom?

Question #51bdf

What is the range of the function #y=sqrt(4x^2 + 2x^4 +5)#?

Consider the function f(x)=x³+x²6x+1. Find all the points on the graph of f where the tangent line has slope of 1?

Question #50dea

How do you integrate #int 1/sqrt(9x12sqrtx1) # using trigonometric substitution?

Question #a5322

The SI unit of the coefficient of areal expansion is?