The gas tank of a parked pickup truck develops a leak. The amount, V, in liters, of gas remaining in the tank after t hours can be modeled by the function
V(t)= 90(1-t/18)^2 , t is between 0 and 18.
b) how fast is the gas leaking from the tank at t=12h
I tried V(12) and V'(12) but still...
ok so i tried something..i think the answer is E but the way i did it seems too easy lol..he said it was a challenging question but none is an option too, right?!
1 + k = 3 --> k=2
1+ 2k= 5 --> k=2
1 +8k= 7 --> k=6/8
so would it be none??..i hate questions like these..i have a feeling...
If k is an integer and the number 1 + k, 1 + 2k and 1 + 8k are 3, 5 and 7, respectively, then the smallest possible value of k lies in the interval:
A) 0 to 20
B) 21 to 40
C) 41 to 60
D) 61 to 80
E) None
i reallyy don't know how to do this question..school just started 2 days ago and...
2Sin x + cos x sin x = 0
Sin x(2 + cos x) = 0
sin x = 0
x= sin^-1(0)
x=0degrees
or
2+ cos x= 0
cos x =-2
x= cos^-1(-2)
x=?
I did something different on the test but i think this is wrong too >.<
Don't make show what I did for #2 :(
I had some questions on a test and i got these two wrong..
x is greater than or equal to 0 and x is less than or equal to 360
1) 2sin x + sin x cos x = 0
2) sin 2x = -1/sqrt(2)
its not that complicated..by the most impact i mean which of them has affected us the most..can be a negative or positive impact, and by modern life i mean life today, not in the past, not in the future.
like i said, there is no right answer as long as you can argue why you chose that order...
rank these, 1- the most impact or importance and 6- the least impact on modern life.
Anesthesia
Penicillin/Antibiotics
GM Foods
Birth control pill
Coronary by-pass surgery
Human genome project
what do u think? there is no correct answer...just curious to see what others say.
What quantity has the same numerical value as the gravitational field strength, but is expressed in a different unit?
g= 9.8 N/kg
i can't think of anything else that's 9.8 besides g
A 12kg toboggan is pulled along at a constant velocity on a horizontal surface by a horizontal force of 11N.
a) What is the force of gravity on the toboggan?
b) What is the coefficient of friction?
c) How much horizontal force is needed to pull the toboggan at a constant velocity if two 57kg...
What type of motion is experienced by an object moving down an inclined plane?
uniform motion, uniform acceleration, or nonuniform acceleration?
its a curve on the postion-time graph and a straight line on the velocity-time graph.
i know its definitely not uniform motion..is it uniform...