Wednesday
July 30, 2014

Posts by Tyson


Total # Posts: 19

math
you have 8 marbles numbered 1-8, mix them up & draw 2. What are the chances that the #s are 4 & 7

Pre-Calculus
The Period T, in seconds, of a pendulum depends on the distance, L, in meters, between the pivot and the pendulum's centre of mass. If the initial swing angle is relatively small, the period is given by the radical function T=2pi(sqrtL/g) where g represents acceleration du...

math
x+15<-9

math
x-28<108

math
inequalities x-5<15

calculus
As viewed from above, a swimming pool has the shape of the ellipse given by (x^2/3600)+(y^2/1600)= 1 The cross sections perpendicular to the ground and parallel to the y-axis are squares. Find the total volume of the pool.

calculus
In a certain city the temperature (in degrees Fahrenheit) t hours after 9am was approximated by the function: T(t)= 70 + 19sin((pi*t)/12). What is the temperature at 3 pm?

Calculus
The base of a certain solid is the triangle with vertices at (-14,7),(7,7) and the origin. Cross-sections perpendicular to the y-axis are squares. What is the volume of this solid?

math
what is the ratio of the radius to a diameter of 2.4

math
largest prime # under 100

math
how many 1/5's are in 1/3

Statistics
Oops, I forgot. Here it is, an expected value distribution b. a discrete probability distribution c. none of these d. a continuous probability distribution e. a conditional probability distribution

Statistics
The probability distribution of the number of accidents in Grand Rapids, Michigan, each day is given by x 0 1 2 3 4 5 P(x) .20 .15 .25 .15 .20 .05 This distribution is an example of:

Pre-Calculus
Two sides of a triangle are x units and y units in length. The angle between them is theta. Prove that the area of the triangle is 1/2xysin(theta). I'm not sure how to do this question, I tried drawing a picture but I'm still not understanding it.

Pre-Calculus
Two sides of a triangle are x units and y units in length. The angle between them is theta. Prove that the area of the triangle is 1/2xysin(theta). I'm not sure how to do this question, I tried drawing a picture but I'm still not understanding it.

math
Given these sets: A = {3, 4, 5, 6, 7} B = {6, 7, 8, 9} C = {2, 4, 6, 8} List the elements of this set A(B¿C) Show work, step by step.

chemistry
At 298K, Go = -141.8 kJ for the reaction 2 SO2 + O2 in equilibrium with 2 SO3 Calculate the change in Gibbs free energy (in kJ) at the same temperature when P (SO2) = 0.505 bar, P (O2) = 0.80 bar and P (SO3) = 1.317 bar. (R = 8.314 J/K mol)

science
What are the two processes that use oxygen?

world history
Given the location of the Alps, how might they have been both a help and a hindrance to the development of Italy?

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