the apartment building where Herman lives was built 12 years before his grandmother's house in 4 years the apartment building will be twice as many years old as Herman's grandmothers house. How many years ago was Herman's grandmother house built

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Write a story that matches with the expression 42x-5 pls hurry

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.