andrew has a box which contains 4 pink blocks, 5 yellow blocks, and 6 green blocks. he picks one block, records its color and puts it back in the box. he then draws another block. what is the probability of taking out a yellow block followed by pink block?

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5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

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.