Our middle-aged sun is approximately how old?
a. 5,000 years
b. 5 million years
c. 500 million years
d. 4.5 billion years

Write the expression as a single natural logarithm. 2 in a - 4 in y

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π

If a is a nonzero real number then the reciprocal of a is