A park has both pigeons and doves. If there are 30 pigeons and 10 doves, how many pigeons must be removed so there is a 1 to 1 ratio of pigeons and doves?

What is the distance between (–2 1/2,-3) and (1, –3)?

Nick and nora are married and have three children in college. they have an adjusted gross income of 47,400. if their standard deduction is 12,600 itemized deductions are 14,200 and they get an exemption of 4000 for each adult and each dependent what is their taxable income

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years