Sunday
May 26, 2013

Posts by jessi

Total # Posts: 112

Alegebra
#3 I got this answer (20000*.7)-(3000*.3) =14000-900 =\$13,100. expected profit Is this right

Alegebra
this is what i got from the 2nd problem of the total 7 digits in the number he knows the first 5 that leaves 2 for him to find out with 0 not being the last number so he knows 10 possible for the 6th and 9 possible for the 7th (not 0) 10 * 9 = 90 possible numbers then it takes...

Alegebra
Can some one please help me with this 3 problems I have a hard time with probabilities I'm studying for my mid-term. Thank you 1) Urn A has balls numbered 1 through 7. Urn B has balls numbered 1 through 5. A ball is selected at random from urn A and then a ball is selected...

physics
thank you so much! it's really clear now with the way you've explained it

physics
A cylinder that has a 40.0 cm radius and is 50.0 cm deep is filled with air at 20.0°C and 1.00 atm. A 21.0 kg piston is now lowered into the cylinder, compressing the air trapped inside. Finally, a 79.0 kg man stands on the piston, further compressing the air, which remain...

physics
A block of unknown mass is attached to a spring with a spring constant of 6.00 N/m and undergoes simple harmonic motion with an amplitude of 12.0 cm. When the block is halfway between its equilibrium position and the end point, its speed is measured to be 33.0 cm/s a)Calculate...

Chemistry
How many grams of NaCL are required to make 250ml of a 0.4M solution?

Chemistry
There are 200 mmoles NaOH/400ml. What is the molarity of the solution?

Chemistry
M=6/600=0.01M?

Chemistry
If you had 6 moles in a 600ml of solution, what would be the molarity?

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