The half-life of a certain substance is 23 years. How long will it take for a sample of this substance to decay to 76% of its original amount?

Find percent notation for 0.008 0.008=

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn. if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.