AC and BE are diameters of circle p. What is the arc measure of major arc DBE in degree

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Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.