On a vacation in puerto rico, rose jumped off a cliff into the river in el yunque forest reserve. her heightt as a function of time could be modeled by the fun h(t)=-16t^2 +16t +480, where t is the time after jumping in seconds and h is the height in feet. how many seconds did it take rose to hit the water, round your answer to the nearest hundredth.

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.

Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.