The isotope thulium-167 is used in laser scans for medical treatments. Its rate of decay is −0.075. How many days does it take 500 grams of the isotope to decay to 250 g?

Enter your answer rounded to the nearest tenth, such as: 42.5

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.