I NEED HELP 1. There are two vectors below in component form. u = <3,9> and v = <6,5>. Find the dot product for u • v =

2.There are two vectors below in component form. u = -i + 5j and v = -6i -2j. Find the dot product for u • v =

3. Find the angle θ between the two vectors u = -5i - 2j and v = -10i +25j using the dot product.

4. Find the angle θ between the two vectors u = <-2,2> and v = <8,-1> using the dot product.

What is the value of 1/3x + 7x when x = 5

1- 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.2- 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 the first question?

The stairs leading from the ground to the entrance of a plane forms a right triangle with the ground. if the distance of the stairs measures 22 feet and the ground distance measures 11 feet, how high is the entrance to the plane from the ground? which diagram represents this scenario? / 22ft © 22ft 11 ft 11 ft 22 it