Which of the sets of ordered pairs represents a function? a = {(−4, 5), (1, −1), (2, −2), (2, 3)} b = {(2, 2), (3, −2), (9, 3), (9, −3)} only a only b both a and b neither a nor b

Will give brainliest series to sigma notation write the following series in sigma notation. 6+10+14+18+22+26+30 example image shown below.

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation