Which equation can be used to determine the number of hourse, h hector works given the number of weeks w? A. h = 20w
B. W=20h
C. H=2102
D. w=210h

help pleasee

Given that de, df, and ef are midsegments of △abc, and de=3.2 feet, ef=4 feet, and df=2.4 feet, the perimeter of △abc is .

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?