The mean area of 7 halls is 55m².If the mean of 6 of them be 58m², find the area of the seventh all.

Asquare parking lot has 6,400 square meters what is the length in meters

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?