What is the following product? (x StartRoot 7 EndRoot minus 3 StartRoot 8 EndRoot) (x StartRoot 7 EndRoot minus 3 StartRoot 8 EndRoot) 7 x squared + 72 7 x squared minus 12 x StartRoot 14 EndRoot + 72 7 x squared minus 12 x StartRoot 14 EndRoot minus 72 7 x squared minus 72

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Multiply. −2x(6 x 4 −7 x 2 +x−5) express the answer in standard form. enter your answer in the box.

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.