Which equation can be used to solve for b? triangle a b c is shown. angle a c b is 90 degrees and angle c b a is 30 degrees. the length of side b c is 8 feet, the length of b a is c, and the length of c a is b. b = (8)tan(30o) b = startfraction 8 over tangent (30 degrees) endfraction b = (8)sin(30o) b = startfraction 8 over sine (30 degrees) endfraction

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe

Find the distance between the pair of points a(-1,8) and b(-8,4)