An above-ground swimming pool is leaking. After ½ hour the pool has leaked ⅞ of a gallon of water. How many gallons of water per hour is the swimming pool leaking?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.