trig
If a flywheel 8 ft. in diameter rotates at 80 rpm., what is the linear velocity of a point on the outside edge, in feet per minute in terms of pi?
Algebra
I have only dimes, nickels, and pennies in my wallet. Seven of the coins are dimes, 25 percent are nickels and 5/9 of them are pennies. How many coins do I have?
prealgebra
change 40 miles per hour to miles per second
elemetary elgabra
A tree casts a shadow 25 m long. At the same time, the shadow cast by a 57-cm tall statue is 66 cm long. Find the height of the tree to the nearest meter.
LSU
Two point charges Q1 = -26.8 micro-Coulombs and Q2 = +38.5 micro-Coulombs are located on a vertical line with Q1 below Q2. The coordinates of Q1 is (0.0, -6.8 cm). The two charges are 28.6 cm apart. Determine the coordinates of the location where the net electric field due to ...
math
A set of scores with a normal distribution has a mean of 32 and a standard deviation of 3.7. Which score could be expected to occur the least often?
trig
Verify the trigonometric identity. Please show all steps. tanx-cotx/tanx+cotx=sin^2x-cos^2x
chemistry
How many liters of pure oxygen at STP is consumed by a human being in 24 hours if the human body requires daily energy that comes from metabolizing 816 grams of sucrose (C12H22O11)? C12H22O11(s ) + 12 O2(g) => 12 CO2(g)+11 H2O
chemistry
a quantity of gas is collected over water at 15C. The manometer indicated a pressure of 24.0kPa. what would be the pressure of the dry gas?
chemistry
what volume does 2.5 moles of carbon monoxide occupy at 50.5 kPa pressure and 20.0 C?
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