11. Which of the following sequences are arithmetic? Select all that
apply.
A. 4, 1, -2, -5, -8,...
B. 9, 10, 11, -12, ...
C. 1.0, 1.2, 1.4, 1.6, ...
D. 1,1 1 1

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?