A6-ft adult has a shadow 3.6 ft long. how long is the shadow of a 5-ft child standing next to the adult?

a. 3 ftb 2.6 ftc. 4 ftd> 3.6 ft

What properties allow transformation to be used as a problem solving tool

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?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle