You have 18 pictures to paste to a poster. You want to arrange them on the poster in rows so that there are an equal number of pictures in each row. a. How many rectangular arrangements are possible? List them.

b. You decide to have no more than 10 pictures in any row or column. How many rectangular arrangements are possible now? List them.

What aspects of lines have to be diffrent

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

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.