pressure P is directly proportional to temperature T, P is 20 lb per square inch when T is 60 degrees Kelvin. What is the pressure when the temperature is 74 degrees kelvin?

Question

anonymous · Answer

$$\frac{ 20 }{ 60 } = \frac{ x }{ 72 }$$

anonymous · Answer

err 74 im sorry.

anonymous · Answer

someone said 60/20=x/74

anonymous · Answer

Yeah thats the same thing. to solve you can cross multiply. and get 60x = 1440

anonymous · Answer

lets try your answer 24

anonymous · Answer

Thank You:) now hold up a little:)

anonymous · Answer

sorry it didnt work....im using wiley plus and it marked it wrong:(

anonymous · Answer

That cant be right...

anonymous · Answer

24.667 haha sorry

anonymous · Answer

let me try that...sorry i bug too much heheh

anonymous · Answer

miracle...THANK YOU! It worked lol

anonymous · Answer

lol my bad i used 72

anonymous · Answer

its ok thank you..are you a math tutor?

anonymous · Answer

N

anonymous · Answer

No haha, just an engineering student.

anonymous · Answer

wow, that's really good, difficult career but your smart...im undeclared, math is not my strength

anonymous · Answer

haha no worries, its a struggle all the time. just slow and steady

anonymous · Answer

That's true...I got another one fore you if that's ok with you.
I need to construct an equation so that I can solve the problem.

Earnings E are directly proportional to the time T worked, and E is $45 when T is 3hours. How long has a person worked if she earned $455?