Me !
kim loves to read. she reads at least one book every week. on monday, kim read 1/4 of her new book. on tuesday, she read 1/5 of the same book. about how much of the book has kim read? a) about 1/2 b) more than 3/4 c) less than 1/3 d) more than 1/2

Kim loves to read. She reads at least one book every week. On Monday, Kim read 1/4 of her new book. On Tuesday, she read 1/5 of the same book. About how much of the book has Kim read?

A) About 1/2

B) More than 3/4

C) Less than 1/3

D) More than 1/2

Step-by-step explanation:

Respectively we will say the book has One thousand pages (1000) . Now we find 1/4 of a 1000 which is 250 , then we find 1/5 of a 1000 which is 200. Now we add them together which is 250+200=450 . 450 / 1000 = 9/20 which is about a half

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form