within about, 2,600m, the stream descends 78 m at fall creek falls in Tennessee. Calculate the average descent of stream per meter along the river

Simplify the expression. -2/5(10+15m-20n)

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.