With reference to the diagram, which facts are required to conclude that m∠AED = m∠ACB?

A) AD = DB and AE = EC
B) AB = DE and AC = BC
C) AD = DB and m∠DAE = 90°
D) BD = EC and m∠DAE = 90°

How can you tell when x and y are not directly proportional?

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189