Abby and Ben are running on a 3.5km loop circuit. They both set off at the same time, running in opposite directions. Abby runs at 12km/hr and Ben runs at 9km/hr. How many minutes does it take before they meet again?

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.

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily