(6.8 x 10^2) x (1.3 x 10^-3) give your answer in standard form

What is the value of x? enter your answer in the box. (cm)

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

Using the figure below, select the two pairs of alternate interior angles. a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7