Friday
December 6, 2013

Posts by Shane

Total # Posts: 289

alebra
the sum of twice a number and 4 less than the number is tha same as the diiference between -36 and the number. What is the number?

physics
What is the apparent weight of a lead brick 2.0 in x 2.0 in x 8.0 in if placed in oil with density p=0.93 g/cm^3 (Ppb=11.4 g/cm^3)(1 in. = 2.54 cm)

Physics
Why does the volume of air bubble increase as it rises toward the surface?

math
For the party, 105 re and blue balloons were inflated. There were 3 red balloons for every 2 blue balloons. How many blue balloons are there?

statistics
An organization sends a random sample of surveys to 100,000 people and received 4,781 responses. A) Give a 95% confidence interval for the true proportion of those from their entire mailing list who may donate.

chemistry
What is the molarity of a sulfuric acid solution if 30.00mL of H2SO4 is required to neutralize 0.840g of sodium hydrogen carbonate? H2SO4(aq) + NaHCO3(aq) → Na2SO4(aq) + H2O(l)+ CO 2(aq)

biology
Why is fermentation an important process for some organisms?

Physics
Two resistors of equal resistance are connected in series with each other and are connected to a battery that produces a potential difference of 8 V. If the current is 0.2 A what is the value of each resistance?

Maths
State the x-intercepts of the graph of y=1-x^2

Maths
Point P(-8,-3)and Q(6,9)are joined by a straight line.Find the equation of the line joining the midpoint of PQ to the origin.

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