The power, in watts, dissipated as heat in a resistor varies jointly with the resistance, in ohms, and the square of the current, in amperes. A 15-ohm resistor carrying a current of 1 ampere dissipates 15 watts. How much power is dissipated in a 30-ohm resistor carrying a current of 5 amperes?
?
__________ watts
Fill in the blank(s) with the appropriate word(s).
750
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Solve the problem.A tree casts a shadow that is 60 ft long when a 5 ft tall woman casts a shadow of 9 ft. How tall is the tree?
A. 108 ft
B. 45 ft
C. 60 ft
D. 33
ft
A bag contains 6 cherry, 3 orange, and 2 lemon candies. You reach in and take 3 pieces of candy at random. Find the probability.2 cherry, 1 lemon
A. .7272 B. .1212 C. .3636 D. .1818
Solve the problem.Doctors predict that by administering a vaccine, the number of new cases of a certain childhood disease will decrease by half each year. If 1200 people were afflicted with the disease in 2000, estimate the number of new cases in 2005. (Round to the nearest whole number.)
A. 38 new cases in 2005 B. 19 new cases in 2005 C. 75 new cases in 2005 D. 150 new cases in 2005
Find the equation of the parabola which has the given vertex V, which passes through the given point P, and which has the specified axis of symmetry.V(-3, -1), P(-4, 0), vertical axis of symmetry
A. (y + 3)2 = x + 3 B. (x + 3)2 = -(y + 1) C. (x + 3)2 = y + 1 D. (x + 3)2 = y - 1