Two brothers have a combined age of 21 years. Roger is twice as old as Bill was when Roger was as old as Bill is now. How old are they?

What is mArc B C? 50° 80° 100° 130°

The equation of a circle is x2+4x+y2-10y+13=0 . What is the equation of the circle in standard form? (x+4) 2 + (y-25) 2=25 (x+4) 2 + (y-25) 2=16 (x+2) 2 + (y-5) 2=16 (x+2) 2 + (y-5) 2=25

You have been really sick, so you went to the doctor. The culture taken shows you have 400,000 bacteria. Your doctor prescribes a strong antibiotic which makes the bacteria decrease by a half every 4 hours.

6,12,18,24 the next term is

Between which values does √111 lie

4 times the quotient of a number and 5

The vertex of the parabola is at (-3,-2). Which of the following could be the equation?

What is 500/100 simplified

Jimmy and his family are on their way to visit some family friends who live 780 miles away from them. Based on the route they chose, they expect to complete their trip in three days.

What is $84 increased by 12%