Which statement must be true?
1.) if a parallelogram is not a rectangle, then it is not a square.
2.) if a parallelogram is not a square, then it is not a rectangle.
3.) all rectangles are squares.
4.) if a parallelogram is a rectangle, then it is a square.

A) if $50000 is invested in a bank account that pays 9.3% of interest compounded on a six-monthly basis, how much money will be in the account after 3 and 12 years? b) if matusalen's father had put $2.0 in the bank when he was born and there, how long would matusalen have had to his death (969 years later) if the interest was 7% per year composed each month and weekly?

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before