Segment d1 is a diameter of ⨀A, and segment d2 is a diameter of ⨀B. Two circles, A and B, with diameters d sub 1 and d sub 2 as described in the problem. Circle B has a larger diameter than circle A. If d1=1 and d2=2r, and if CB denotes the circumference of ⨀B, which equation is true?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?