Let i be an imaginary unit and let a, b,c, and d be real numbers. If (a+bi)(c+di)=2, then a not equal to 0 or d not equal to 0. Give a proof using the contrapositive.

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

The area of square garden is 300m squared. how long is the diagonal?

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?