Answer for brainliest answer

labels:
a= top
b= 90 degree
c= bottom
angle a is 45 degrees and the length of ac.

the length of ab √2 or 9√2)
the length of bc √2 or 9√2)
choose one for !
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Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20