Which statement is supported by the cell theory? A. All animal cells are the same size.

B. All plant cells are the same shape.

C. Similar organisms all have the same number of cells.

D. Cells are the primary unit of structure in living organisms.​

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

An isosceles trapezoid with a perimeter of 42 inches. each of the congruent non parallel sides is 5 inches long, and the trapezoid is 3 inches tall. how long are the two parallel sides? a. 10 in, 22 in b. 16 in, 16 in c. 10 in, 16 in d. 12 in, 20 in

14+2 (56-1) this is an arithmetic sequence