7) Una sustancia está a – 19º C se enfría lentamente, de tal forma que su temperatura baja
a razón de 2 grados cada tres minutos.
¿Al cabo de cuántos minutos la sustancia estará a
– 1 ºC?

alguien me lo soluciona

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Common binomial factor of 6x(3x+7)+5(3x+7)