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

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2