Determine which of these relations are symmetric. the variables x, y represent integers. da. (x, y) e r if and only if x â y is positive. ob. (x, y) = r if and only if xy is negative. oc. (x, y) e r if and only if x + y is even. od. (x, y) r if and only if x = lyl. de. (x, y) e r if and only if x +y is positive.

d. you cannot tell because there are no values shown.

the furthest the dog can be is 508 meters away from the house, and the closest he can be is 492 meters away from the house.

mariah is studying the life cycle of the monarch butterfly. she must choose one stage in the cycle to present in science class: egg, caterpillar, chrysalis, or adult. she plans to make her choice randomly using a custom spinner divided into four sections. first, however, she spins the spinner 50 times to see the frequencies it generates.

stage times landed on

egg 10

caterpillar 12

chrysalis 15

adult 13

step-by-step explanation: