En medicina se usa un isótopo de yodo para diagnosticar ciertos desórdenes de la glándulas tiroides. Para este particular isótopo radiactivo de yodo, la masa que permanece después de t horas, M(t), decrece según la fórmula: M(t) = M02-t/13.2, donde M0 es la masa inicial. ¿Cuántas horas pasarán hasta que una muestra inicial de M0 gramos de este isótopo se reduzca a la mitad?

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

Which expression is equivalent to (4x^3*y^5)(3x^5*y)^2 \a) 24x^13*y^7b) 36x^13*y^7c) 36x^28*y^7d) 144x^16*y^12

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?