Radioactive decay of 40k in an igneous rock has resulted in a ratio of 25 percent 40k atoms to 75 percent of 40ar and 40ca atoms. How many years old is this rock?

Brainiest To Best Answer: If I got a level 2 on one of my AP exams, does this reduce my chances of getting into a competetive college or Ivy League?

Over which of the following domains of governance do state governments NOT have authority? enforcement of laws regarding the public safety regulation of business and industry provide for the common defense of the country supervision of county and

An AP Statistics class surveys 24 randomly selected female students from their high school, and calculates a 95% confidence interval for the mean height of female students to be 63.4±1.6 inches.

La moto "ronroneaba" entre sus piernas, y un viento fresco le "chicoteaba" los pantalones.* What is it onomatopeya or encabalgamiento

Samuelpaysan samuel sentai paysan

what substance aids the speed of a neuron transmission enabling toddlers to preform more complex tasks

Who will be the king after queen of England dies?

AP Psychology* Describe the important tenets of unconditional positive regard, according to Carl Rogers.

Which of the following is the school of thought that stresses the importance of unconscious motives and internal conflicts in determining human behavior? A. Gestalt psychology B. psychoanalytic theory C. structuralism D. behaviorism

What is a difference between conduction and convection?