Me!

which phrase best defines a square?

a.
a parallelogram with four congruent angles

b.
a parallelogram with four congruent sides

c.
a rectangle with four congruent sides

d.
a quadrilateral with no congruent sides

i think it's either a. or b.

Simplify this expression.2(10) + 2(x – 4) a. 2x + 16 b. x + 12 c. 2x + 12 d. x + 16

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?