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Deen

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If B is the midpoint of segment AC, AB = x+7 , and AC = 5x−7 , then what is the length of BC?
1. 2 answers
2. 89 views
how many diagonals are there in a hendecagon?
1. 1 answer
2. 205 views
solve for x and y , the simultaneous equations 4^x+3 = 32(2^x+y) and 9^x + 3^y = 10
1. 6 answers
2. 3,229 views
The Ehrenberg equation gives the relationship between the weight W (in kilograms) and the height h (in meters) of a child
1. 5 answers
2. 1,021 views

x=2
Ya I need help with this too
Hello Reiny,The one i found is log(W) = 0.8*h + 0.4 now i wounder which is correct.
Yes Reiny i know the Ehrenberg's equation it is ln W = ln 2.4 + 1.84h. It is finding the derivatives to find the rate of change for the child i am having a problem with
Firstly you find the strain energy in the spring: Mgh=strain energy M: 60 kg G: 10 m/s^2 H: 20 m Strain energy: 60*10*20= 12000 Because you have to ignore air resistance, you just subtract the kinetic energy from the strain energy to find the energy stored

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