Which division problem would have an estimated quotient of 3.5 if the divisor and dividend were rounded to the nearest whole number? 7.8 divided by 27.7 or 20.6 divided by 70.19 or 5.9 divided by 21.96 or 15.47 divided by 56.4

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?