15. Maria uses 5 1/3 gallons of gas to drive to work and back four times. a. How many gallons of gas does María use in one round trip
to work?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

How to solve a simultaneous equation involved with fractions?