A man flies a plane 180 miles. Because he is flying into a headwind the trip takes him 2 hours. On the way back the wind is blowing the same speed so the return trip takes 1 hour and 12 minutes. What is his speed in still air and how fast is the wind blowing?

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

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?

17 in long 1.3 ft wide and 8in high what is the volume