For 25 points

Which of the equations is the correct representation of the following word problem?

A student's grades are 92, 73, 87, and 91. What is the average of the student's grades?

(92 + 73 + 87)/3 = x

4(92 + 73 + 87 + 91) = x

(92 + 73 + 87 + 91)/4 = x

(92 + 73 + 87 + 91)/5 = x

Which of the following are accepted without proof in a logical system? check all that apply.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

Which expression and diagram represent “renee biked four times as far this month as last month”?