An alrplane is traveling due east with a velocity of 7.5 x 102 kilometers/hour. There is a tailwind of 30 kilometers/hour. What is the value of the resultant velocity of the airplane?
OA 7.8 x 102 kilometers/hour
OB. 7.2 x 102 kilometers/hour
OC 7.6102 kilometers/hour
OD.3.0 x 102 kilometers/hour

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Percent increase and decrease. original number: 45 new number: 18

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −