Which of the sets shown includes the elements of set z that are both odd numbers and multiples of 7? z = {−21, −14, −7, 0, 7, 14, 21} a. {−21, 21} b. {−21, −7, 7, 21} c. {−14, 0, 14} d. {−21, −14, −7}

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?