Saturday

January 31, 2015

January 31, 2015

Total # Posts: 20

**Kimbe secodary**

Calculate percentage composition of nitrogen in amammonia
*August 13, 2014*

**math**

you have 8 marbles numbered 1-8, mix them up & draw 2. What are the chances that the #s are 4 & 7
*February 24, 2014*

**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 ...
*September 20, 2013*

**math**

x+15<-9
*April 17, 2013*

**math**

x-28<108
*April 17, 2013*

**math**

inequalities x-5<15
*April 17, 2013*

**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.
*January 30, 2013*

**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?
*January 30, 2013*

**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?
*January 30, 2013*

**math**

what is the ratio of the radius to a diameter of 2.4
*January 17, 2013*

**math**

largest prime # under 100
*January 16, 2013*

**math**

how many 1/5's are in 1/3
*January 10, 2013*

**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
*October 10, 2012*

**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:
*October 10, 2012*

**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.
*September 28, 2012*

**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.
*September 28, 2012*

**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.
*February 20, 2011*

**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)
*November 19, 2010*

**science**

What are the two processes that use oxygen?
*May 4, 2010*

**world history**

Given the location of the Alps, how might they have been both a help and a hindrance to the development of Italy?
*May 4, 2010*

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