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# ?

• ### how to do normal distribution problem in calculator?

we're supposed to be able to use ti-84 for this on test. i know answer is .8148 but dont know how to put it in calc.

High temperatures for a certain city in the month of august follow a uniform distribution over the interval 67 to 94 degrees. What is the probability that a randomly selected august day has a high temperature that exceeded 72?

• ### Let R be the region in the first quadrant bounded by the graphs of y=x, y=1/x^2, the x axis, and the vertical line x=3?

Find the area of the region R

My teacher has the answer as 7/6 but i keep getting 10/3.

• ### Find the particular solution to the differential equation dy/dx=sin4x crossing through the point (0,1). I keep getting c=1 but is 5/4?

Find an equation for the function f that has the given derivative f'(x)=sin4x and whose graph passes through the point (pi/4, -3/4) i thought i could use deriv as slope and the points to be y=sin4x (x-pi/4)-3/4 but not correct...

• ### Help find my error or finish problem?

The answer is (-9(1-2v)^2)/(1+v)^4 but i cant seem to go further, heres what i have so far using chain rule

1.) 3[(1-2v)/(1+v)]^2 multiplied by [(2(1+v)-1(1-2v))/(1+v)^2

2.) 3[(1-2v)/(1+v)]^2 multiplied by (4v+1)/(1+v)^2

3.) [(3(1-2v)^2(4v+1))/(1+v)^4

• ### pre cal question?

I need to graph

x=t+1

y=(t)/(t+1)

But im not sure how to find the restrictions? For the equation i got y=(x-1)/(x)

So some explanation on domain please:)?

• ### a building is 50 stories high, 165 meters tall and has an elevator that travels at speeds up to 12.8m/s. Determine the power delivered by th?

The motor to lift the 10 passengers at this speed. The combined mass of the passengers and cabin is 1150kg.