Q. Two convex lenses of focal length 10 cm are placed 30 cm apart. An object is placed 20 cm to the left of lens 1. Calculate the position of the final image relative to the second lens: A -25 cm B +10 cm C +25 cm D at infinity E -10 cm Thank you

In 1996 a total of 14,968,000 taxpayers in the U. S. filed their individual tax returns electronically. By the year 2004 the number increased to 66,290,000. What is the geometric mean annual increase for the period?

A recent article suggested that if you earn $25,000 a year today and the inflation rate continues at 3% per year, you will need to make $33,598 in 10 years to have the same buying power. You will need to make $44,771 in the inflation rate jumped to 6%. Confirm the statements are accurate by...

a matching problem. 4 cards marked 1,2,3,4 are allocated at random to four positions also marked 1,2,3,4. a match occurs if a card and position number are identical. Let X be the number of matches. Calculate 1. E(X) 2. P(X greater than or equaL to one)