Answer:
6 + 2x² = 20
2x² = 20 - 6
2x² = 14
x² = 14 ÷ 2
x² = 7
x = √7
x = <u>2</u><u>.</u><u>6</u><u>4</u>
First row: Not independent because without replacement
Second row: Independent (same coin)
Third row: Not independent (without replacement)
Fourth row: Independent (with replacement)
1/3= 2/6...+1/6= 3/6 or 1/2 of the book. Now there is 1/2 left to read 40 pgs each day...160 pgs...160 is half the book. So 160*2= 320 total pages.
Side TR is similar to the side NR, so you can use this proportion to solve for the x.
2x - 2 = 60
2x = 62
x = 31
