21 and 22 are a linear pair. mZ1 = x - 29, and mZ2 = x + 61. Find the measure of each angle.
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Horace's speedometer reads 60 miles per hour, but during a road test he finds that he was actually driving 58 mph. what is the percent error in horaces speedometer?

If 20% of a number is 35, what is 50% of that number?

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.