Student grades on a recent science test follow; 78, 81, 89, 75, 76, 91, 10963, 80, 87, 91, 95. Find the MEAN (average) to the nearest tenth.

• 76.9
• 83.0
• 83.8
• 83.3

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.