Solving systems by elimination with multiplication: 8x+7y=20 and 4x-4y=-20

A representative from a company that manufactures items for left-handed people will attend a large convention. The representative hopes to find a left-handed person at the convention to try out the items.

The maximum speed is 45 miles per hour and the minimum speed is 35 miles per

Jon has 5 he gives away 3 how much is left

Jayden has been reading a 275-page book for English class. On average, he has read about 10 pages in 15 minutes. With a deadline looming, Jayden realizes that he won't finish in time unless he skims through the rest of the book.

Calculate the length of the circumference of a circle with a diameter of 7 cm

Becky works 16 days each month. how many days will she work in 6 months

Which relationships hold true for the sum of the magnitudes of vectors u and v, which are perpendicular? a. ||u+v||=||u||+||v|| b. ||u+v||=sq rt (||u||^2+||v||^2) c. ||u+v||

Efetue os cálculos a seguir e, quando possível simplifique o resultado

Water flows back and forth between a small and large tank. When water is moving into a tank the flow rate is positive, and when water is moving from a tank the flow rate is negative. Each tank begins with 250 gallons of water.

An airplane flies 1,500 miles in 3 hours. At the same rate, how far will it go in three-fourths of a day?