The circumference of a circle is 18m. Find its diameter, in meters.
quick answers please

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

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.

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet