Opposite numbers - Zero sum 7. a) Write the opposite of each of the
following numbers:
+16 ; -2.5; -14 ; 0 ;
2.8 ; -100 ; -0.9 .
b) Which of the following sums is zero?
-32 + 23; -32 + (-32) ; 2.4+(-2.4);
-9.05 + 9.5; -1 + 1 ; -3001+3001.
Addition of numbers​

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.