What is the value of u?

6.4u−5.1u=−3.25

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u=

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Drag each tile to the correct box. not all tiles will be used. consider the recursively defined function below. create the first five terms of the sequence defined by the given function

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.