Wednesday
December 11, 2013

# Posts by molly

Total # Posts: 413

math
5 rounds up, so 85 would round up to 90.

Probability
Let Y be a Normal RV with mean 7 and standard devi- ation 4. a. Find P (Y = 7). b. Find P (Y < 5). c. Find P (Y ≥ 10). d. Find P (Y < 0). e. Find E[Y].

Probability
Consider an RV X with the following density given parameters α and γ . f (x) = {(1/γ)e^(-(x-α)/γ) if x>α {0 if x ≤ α. a. Find E[X]. b. Find V[X]. c. If α = 4, γ = 2, ﬁnd P (X > 8). d. Find P (X < α + 3^...

chemistry
shoot, i wish i could remember the metal. she gave us the entire periodic information. how would i find the solution if I theoretically had the density?

chemistry
There is a ball with a mass of 1000 lbs. It's turned into wire with a diameter of 3.12 x 10^-1 How long is the wire? This is my crazy chemistry teacher's idea of a test...and I don't even think there's a solution. HELP ME

math
emilio can type 60 words in 1 minute marg can type half as many how many total words can emilio and marg type in 3 minutes

math
use the order of operations and the digit 4 four times to write problems that have the following answers 44 and 12

physics
A 30.0 g bullet strikes a 0.595 kg block attached to a fixed horizontal spring whose spring constant is 6.66 103 N/m and sets it into vibration with an amplitude of 21.8 cm. What was the speed of the bullet before impact if the two objects move together after impact? answer sh...

physics
When a 69 kg person climbs into a 1000 kg car, the car's springs compress vertically by 2.9 cm. What will be the frequency of vibration when the car hits a bump? Ignore damping. answer should be given in Hz.

Algebra
2/5x^4-23x^2+1/15 x^4+5x^2-5 Simplify each expression.

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