PLS HELP I NEED A LOT OF HELP

If m<DEF = 117°, find the value of x

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2x minus y equals 6, x plus y equals negative 3

Use the squared identities to simplify sin^2x cos^2x

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)