Please I really need help

Please I really need help

Please and thanks

Please explain if you can.

Consider points P = (0, a), Q = (c, b) in the plane, with a, b, c all positive. Find a point R = (x, 0) so that the distance P R+QR is minimal. Justify that your answer is indeed a minimum.

TV Circuit has 30 large-screen televisions in a warehouse in Erie and 60 large-screen televisions in a warehouse in Pittsburgh. Thirty-five are needed in a store in Blairsville, and 40 are needed...

Describe how it could happen that three different animals could each be claimed -rightfully- to be the largest of the three. Discuss the implications of this kind of situation for teaching students...

Three marbles are drawn randomly WITH REPLACEMENT from a box with 5 blue and 7 green marbles. (a) What is the probability that all the marbles drawn are green? (b) What is the probability...

Let A and B be independent events. If P(A) = 1/4 and P(B) = 1/3, find (a) P(A|B). (b) P(B U A). (c) P(A`n B) (d) Find P(A U B|A).

Suppose that two balanced (six-faced) dice are rolled. Let X be the sum of the two faces showing. (a) Find RX. (b) Find the probability mass function of X. (c) Calculate the probability...

A construction company has dump trucks that hold 10 cubic yards. If the company's workers dig a hole that os 8 feet deep, 20 feet wide, and 30 feet long, then how many dump truck loads will they need...

Write the polynomial equation if it has x - intercepts (-6,0) and (1,0) with a tangent at (1,0) and goes through the point (4,-30)

ACME company's expected sales can be modeled by g(t)=t^3-2t^2+4t-7, where g(t) is measured in thousands of dollars and t is the number of years after 2008.

I'm having a lot of trouble trying to solve the equations algebraically on the interval (0,2pi). Any help is greatly appreciated! 1) tanx= 0 2) 4sin^2x-1=0

Q1 prove piecewise convergent on (0,infinity) Q2 prove uniform convergent on [1,infinity) Please help with these two equations. Much Thanks, it's preparation for final exam...

Q1 prove piecewise convergent on (0,infinity) Q2 prove uniform convergent on [1,infinity) Please help with these two equations. Much Thanks, it's preparation for final exam...

I'm having trouble finding the missing sides and angles for the triangle. I know you have to use law of sines to find them, but I'm having trouble. Any help is greatly appreciated! A=...

I'm having trouble proving these trig identities. Help is greatly appreciated. Thanks in advance! 1) 1- sinx/cosx = cosx/ 1+sinx 2) sin^2x = 1- cos^2x 3) sin2x/2sinx = cosx 4)...

Im having trouble using the sum/difference formula to simplify the equations below. Help is greatly appreciated 1) cos (π + θ) 2) tan (π/6 + π) 3)...

I'm having trouble trying to prove these trig identities. Help is greatly appreciated! Thanks in advance! 1) cot^2θ +1/sec^2θ = cot^2θ 2) 1+cosx/sinx = sinx/1...

I need some help solving these problems. Thanks in advance! Let f(x) = 4x-9/ 2x^2 + 1 find: 1) f(-2) 2) f(x+3) 3) -f(x) 4) f(-x)

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