Math
A bag contains two blue, three purple, four yellow, two red, three green and one orange marbles. What is the conditional probability that, without replacement, the second marble is purple given that the first marble was green?
science
describe how matter cycles through an ecosystem
Calculus
Find the derivative of m(x)=1/(x+1) by using the definition of the derivative.
Calculus
k=+/- 8 I figured it out.
Calculus
It is supposed to be x^2-k^2 over x-8 And the limit is 8
Calculus
Find a value of the constant k such that the limit exists. x^2-k^2 lim _________ x->8 x-8 k=+/_
Pre-Calculus
An Alfa Romeo going at 70 mph requires 169 feet to stop. Assuming that the stopping distance is proportional to the square of velocity, find the stopping distances required by an Alfa Romeo going at 35 mph and at 140 mph (its top speed).
Pre-Calculus
A pomegranate is thrown from a ground level straight up into the air at time t = 0 with velocity 67 feet per second. Its height at time t seconds is f(t)=-16^2+67t. (a) Find the time it hits the ground and (b) the time it reaches its highest point. (c) What is the maximum heig...
Pre-Calculus
For a boat to float in a tidal bay, the water must be at least 2.5 meters deep. The depth of the water around the boat, d(t), in meters, where t is measured in hours since midnight, is d(t)=5+4.6sin(0.5t) Use three decimal places in all intermediate calculations. (a) What is t...
Pre-Calculus
Find a solution to the equation if possible. Give the answer in exact form and in decimal form rounded to three decimal places. 1=21tan(2x+2)-6
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