At noon, a Nissan GTR is 40 miles west of a Nissan 370z. The GTR is moving North at 120mph and the 370z is moving south at 100mph. How fast is the distance between the two cars changing at 12:30pm?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?