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Which of the following is a diagonal matrix?

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

Charlie tosses five coins.what is the probability that all five coins will land tails up.