The half-life of a radioactive kind of europium is 9 years. How much will be left after 18 years, if you start with 40 grams of it?

Find the difference (3x+5) - (2x+2) Show your work

Which statement correctly compares 11/20 and 5/9 a. less than b. greater than c. equal to

Bikers were 1 / 2 finished with their ride at the 6-mile mark. How long was their ride? F. 4 miles G. 6 miles H. 9 miles I. 12 miles

How would i put 15% of 60 is 9 in an open proportion

Identify whether each value of x is a discontinuity of the function by typing asymptote, hole, or neither. 5x x3 + 5x2 + 6x x = - 3 x = - 2 x = 0 x = 2 x = 3 x = 5

For which equation would x = 12 be a solution? x + 4 = 12 48 : x = 12 12 - x = 4 12x = 144

The rectangle below has an area of x^2-9 square meters and a width of x-3 meters. What expression represents the length of the rectangle?

Mr. Haney has 11 coins in dimes and quarters. The value of his coins is $2.15. how many dimes does he have?

Different varieties of field daisies have numbers of petals that follow a fibonacci sequence. Three varieties have 13,21, and 347 petals. How many petals do the next two varieties of field daisy have? a. 42, 55 b. 47,60 c. 42,50 d. 55,89

A certain hybrid car can travel 1 4/11 times as far as a similar non hybrid car can, each on one gallon of gasoline. If the non hybrid car can travel 33 miles per gallon of gasoline how far can the hybrid travel on 4/5 gallon of gasoline?