Recent content by Johny 5

i didn't write the whole problem sorry...

umm I'm still confused...

Homework Statement A container of hot liquid is 180 degrees F. After 4 minutes, the liquid's temperature is 64 degrees F. How much longer will take its temperature to decrease to 32 degrees F? round to three decimal places Homework Equations The Attempt at a Solution I have no...

Homework Statement Eddy throws a little sand bag so that it lands on the top of a vertical post that is 4 m high. the post is 1.3 m away from Eddy. He releases the bag from a height of 1.5 m above the ground, as shown in the figure. the initial speed of the bag is v = 7.5 m/s, the angle...

Homework Statement When startled, an armadillo will leap upward. Suppose it rises 0.544 m in the first .2 s. (a) What is its initial speed as it leaves the ground? (b) what is its speed at the height of .544 m? (c) How much higher does it go? Homework Equations /\X = Vot+.5at^2...

i then took the derivative of that and got that he swims for 24 minutes and walks for 4 making it the fastest time available i hope that's right ...:(

(1-x)/3 = sqrt(x^2+1)/2mph

T= sqrt(x^2+1)/2mph

can you just write out the equations I am not getting them :( grrr I've been working on this problem for the longest i understand y its like that just don't know how to write the 2 equations...

To do this add the time you spend swimming which is equal to the distance you swim divided by how fast you swim to the time you spend walking which is equal to the distance you walk divided by how fast you walk. Now you have a formula that tells you how long your trip will take for however far...

so could you directly swim from point a to point c? thus using pathagoras' theorem which would be the fastest way... please can someone confirm this.. this problem was driving me nuts

can someone draw how the picture is suppose to be?... or at least explain it better than the problem did

I'm not sure if we have the same picture of the problem (mine is probably wrong) well look at my attachment that's what i see...

I'm sorry but i feel completely lost. Why are u using pathagoras? if your campground is a straight line from which you started... and i know where to find extrema just can't figure out the algebra behind this problem...

Homework Statement You are standing at the edge of a slow-moving river which is one mile wide and wish to return to your campground on the opposite side of the river. you can swim at 2mph and walk at 3mph. You must first swim across the river to any point on the opposite bank. From there walk...