Which statements are true about quadrilaterals. a. all 4 sided shapes are parallelogram. b. all rectangles are parallelogram. c. all squares are rhombuses. d. some trapezoid are parallelogram

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Solve for the equation x. 2x + 22 = 4(x + 3)