Last week Matilda earned $103.50 for babysitting nine hours. She will earn $138 this week when she works for twelve hours. Which of the following equations could Matilda use to find the constant of proportionality if she earns the same hourly rate?

Drag the files to the correct boxes to complete the pairs. match each percent amount to its correct value 15% of 30 30% of 45 60% of 7 23% of 20 2019 edmentum. all nghts reserved

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

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?