The half-life of strontium-90 is
approximately 29 years. how much of a
150 g sample of strontium-90 will remain
after 116 years?
first, complete the equation:
remaining amount = [? ](1 -[])0

The density of the cube is 40

Equatorial triangle and obtuce angle

1. statement- ca is parallel to db and e is the midpoint of ad reason- given2. statement- reason- alternate interior angles3. statement- de is congruent to ae reason- definition of midpoint4. statement- triangle aec is congruent to triangle deb reason- asa (angle side angle)