Aboat a moving with speed 8kmh leaves point p whose position vector is r1=4i+3j heading directly towards point q whose position vector is r2=2i+5j. at the same time another boat b leaves point 0i+0j. if the velocity of boat b is vector vba=root2(-5i+3j), find a. the veloctiy of boat b b. the timetaken when the boats are close c. the shortest distance apart

Which expression is equivalent to 3^3 + 2^2?

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?

Sherrie is baking a pie for her family. she leaves the room and comes back to 35% of the pie having been eaten before she can put the topping on. how much 1 square inch strips of dough will she need for the top, now that a portion is missing? round your answer to the nearest while nimber.