Reza

Find any critical numbers of the function. (Enter your answers as a comma-separated list.) g(x) = x^7 − 7x^5 Honestly, I have no idea how to find the critical number!

What is the speed of the wave represented by y(x, t) = A sin(kx − ωt),where k = 7.0 rad/cm and ω = 3.6 rad/s? answer should be in cm/s I tried to subtract 7-3.6= 3.4 which is wrong and I also divided 7/3.6=1.94 , but that is wrong too. I don't know how to...

The height of a ball thrown straight up into the air as a function of time is given as h(t) = 1 + 15t Ð 4.9t^2. At what time does the ball hit the ground?

Given a 10 cm by 20 cm piece of paper, if you cut out four equal squares from the corners and fold up the resulting sides you will create an open box. Write an expression for the volume of this box in terms of the side length of each cut‐out square, x.

at what time does this equation reaches 10000? show steps. thanks w(t)=(t-10)(t-20)+4500

1a). If you react 16 mol A with 15 mol B in the reaction 4A + 3B → 2C, what is the limiting reactant? 1b). What is the theoretical yield of product C in mol? 3a.) If Pb(NO3)2 were the limiting reactant in this reaction: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) +...

Thank you I really appreciate your help :)

Would this help these two points were given on the graph illustrated with this question (-7,0) & (1,0) thnks for the help

Thank you! I got the other parts, but I still cant get part b. Isn't it sqrt(26/1.5) and the answer multiplied by 2 to get tension, but its giving me wrong. I don't know why!

Thanks Reiny

B) step 1: substitute points to write to linear equations y= ax^2+bx+c the three points are (0,10000) (3,7595) (6,6400) 7595= a3^2+b x3+10000 7595=9a+3b+10000 -10000 -10000 -2405=9a+3b Equation (1) 6400=a(6^2)+6 xb+10000 6400=36a+6b+10000 -10000 -10000 -3...

sorry I have messed up with the second point value hahahhaha the equation will change to 25x^2-750x+10000 just follow the above steps and u will get the right answer sorry

Sorry the equation is wrong it should be W(t)=5 (t-10(t-20)+4500

A= P(1+r/n)^n*t for instance A=10000(1+0.05/1)^1*10 A= 10000(1.05)^10 a= 10000(1.628895) A= 16288.95

Thanks Reiny :D