7x^2-63=0

how many solutions are there and how many

the record for the longest migration is held by the arts tern, which flies a round trip that can be as long as 20,000 miles per year, from the arctic to the antarctic and back.

Ariel travels 400 miles in 8 hours. What is her rate of change or rate? A) 40 miles per hour B) 50 miles per hour C) 55 miles per hour D) 60 miles per hour

Galileo wanted to release a wooden ball and an iron ball from a height of 100 meters and measure the duration of their fall. He found a plane with an incline of 12 degrees that he could climb until he could get to an altitude of 100 m.

Anderson has $50 in his savings account. he deposits $5 every week. his father also deposits $20 into the account every time anderson mows the lawn.

What is the difference between probability and odds?

Jason entered the elevator of the skyscraper on the ground floor and rode up to the 45th floor. Since Jason was texting, he didn't notice where he was, so he then rode down 28 floors and finally up 15 floors where he exited the elevator.

Randall bought a bond with a face value of $6000 and a coupon rate of 7.25%. the bond will mature in 5 years. how much interest will he receive semiannually?

Ryan has $0.75 worth of pennies and nickels. He has 3 more nickels than pennies. Determine the number of pennies and the number of nickels that Ryan has.

A stack of 6 books weighs 7.8 pounds. If each book weighs the same amount, how much doesn't each book weigh?

5/7 times 9/10 equals?