Friday

September 4, 2015
Total # Posts: 723

**dwyer**

how do i start to solve this Harry has a choice of a veggie burge and a regular pizza he can have three toppings his choices are lettuce pickles onions tomatos and sprouts that is five items how many combinations can he have I think i multiply 5 x 3 and get 15 can you tell me ...
*April 17, 2007*

**math**

I need to know of a shape that has 4 sides and 3 vertices. There is no planar figure with 4 sides and 3 vertices. 3 vertices and 3 sides define the minimal planar shape of the triangle. The addition of a 4th side would require 2 additional sides and 1 vertex to create a ...
*April 3, 2007*

**world studies**

what are some of the buildings near the Seattle Space Needle? Check these sites. http://www.emporis.com/en/wm/ci/bu/sk/?id=101046 http://www.tripadvisor.com/Attractions-g60878-Activities-c8-Seattle_Washington.html
*February 16, 2007*

**calc**

i need to find the definite integral from 0 to 2|b| of .... x divided by sqrt(x^2 + b^2) dx im having a lot of trouble, thanks in advance Let u = x^2 + b^2 du = 2x dx The integrand becomes (1/2) u^(-1/2) du and the integral of this is u^(1/2) = sqrt(x^2 + b^2) Evaluate this ...
*January 31, 2007*

**math word problem gr 6**

Two mothers and two daughters divided $21 in dollar bills evenly among themselves. Each received an equal number of dollar bills. How could this be? One momma is a grandmother. That makes three folks. Grandmother, daughter, and granddaughter. each one will receive $5.25 This ...
*January 28, 2007*

**Integration of exponents with absolute values**

I cannot for the life of me figure this out. Please help me. How do I integrate the function f(x) = 0.1 * e ^ (-0.2 * |x|) from neg. Infinity to pos. Infinity? I seem to only be able to get 0, but the answer is 1. I think it is the |x| that is throwing me off. Please Hlep! ...
*January 24, 2007*

**calc**

evaluate exactly it's a sigma notation where n=20 k=1 and (1+(-1)^k)
*January 17, 2007*

**science - controlled experiment**

difference between controlled and indepndent variable
*December 13, 2006*

**Pigskin Geography**

do any of ou have the answers for 2007 pigsin
*December 9, 2006*

**chemistry**

The freezing point of a 0.010 m aqueous solution of a nonvolatile solute is ?0.072°C. What would you expect the normal boiling point of this same solution to be? have no clue, thanks for the thelp Freezing point depression= N*kf* molality you have freezing point depression...
*December 5, 2006*

**physics**

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) larger than the change in momentum of the larger mass. C) zero. D) equal to the ...
*December 2, 2006*

**physics**

A constant force is applied to an object that causes a certain displacement. If the angle between the between the force and the displacement is 146 deg, then the work done by this force is A) zero B) not enough information given C) positive D) negative not sure how this is ...
*December 2, 2006*

**chemistry**

The density of acetone vapor in equilibrium with liquid acetone, (CH3)2CO, at 33.1°C is 0.832 g L?1. What is the vapor pressure of acetone at 33.1°C, expressed in kilopascals? agian i am confused with formulae, hoe you can helpm thanks! change 0.832 g to mols. Use PV...
*November 29, 2006*

**chemistry**

The enthalpy of vaporization of benzene, C6H6(l), is 33.9 kJ mol?1 at 298 K. How many liters of C6H6(g), measured at 298 K and 88.7 mmHg, are formed when 1.90 kJ of heat is absorbed by C6H6(l) at a constant temperature of 298 K? not sure what formulae to use, thanks! M = Q/([...
*November 29, 2006*

**Calculus**

Find the radius, volume, and hieght of the right- circlar cylindar that can be inscribed in a right- circular cone with a radius of 6 inches and a hieght of 10 inches. There are an infinite number of solutions to this. Did you mean the right cylinder with the max volume? Or ...
*November 28, 2006*

**phys**

When a car is weighed, it is allowed to move over a scale which records a reading as the front wheels go over the scale, and a second reading when the rear wheels go over the scale. The weight of the car is equal to A) the weight under the front wheels. B) the weight under the...
*November 21, 2006*

**homework**

red orange and blue
*November 13, 2006*

**Math**

How many feet in a yard? 3 feet in a yard Most yards deserve to include two dogs and therefore all yards should have 8 feet in them. lol!
*October 30, 2006*

**physical science**

how many electrons does each group lose or gain? In the main group, the common valence is the same as the group number.
*October 17, 2006*

**Science**

the SI UNIT for mass is what kg kg is correct. Here is a good site for SI units. http://physics.nist.gov/cuu/Units/units.html
*October 11, 2006*

**Lattice method/math**

30=X+33
*September 19, 2006*

**PLTW**

"what is design Data in engineering" It could be many things: tensile strenght of a particular material, compressive strenth, melting point. Or it could be the desired roof loading in lbs/ft^2 Many things are design data.
*August 30, 2006*

**math**

how to subtract numbers with decimals Line up the decimal points and proceed the same way as you would when subtracting whole numbers. Example: 56.78 12.34 ____ 44.44 It works the same when adding decimalized numbers. example: 92.4 -6.41 _____ 1) When adding or subtracting ...
*August 30, 2005*