1. How is 0.000646 written in scientific notation?

If a system of linear equations is inconsistent, then what happens with the lines?

Marcus has 12 slices of of bread. He uses 2 slices of bread for each sandwich. How many sandwiches can Marcus make.

Find the distance between (0, - 2) and (5,7)

A movie theater charges $5 for an adult's ticket and $2 for a child's ticket. one saturday, the theater sold 780 tickets for & 3280. how many of each type of ticket were sold

Residents of a small city voted on whether to allow a developer to build a shopping center. The number of votes in favor of shopping center was 4,400. The number of votes against the shopping center was 17,600.

After deductions of $45 were withheld this week from Ed's weekly earnings on his part-time job, his take-home pay was $240. Ed had worked 30 hours this week. How much did Ed earn per hour?

omposite figure is divided into two congruent trapezoids, each with a height of 4 cm. 2 trapezoids. Both trapezoids have base lengths of 10 centimeters and 6 centimeters, and a height of 4 centimeters.

During a day a student spends 7 hours sleeping, ¹/4 of the day studying and of the time travelling. What fraction of the day is left for other things?

Simplify (x-5) (x^2-2x-6)

Is 0.05 ... irrational?