What would the circumference be if the radius was 9

The measurement of one angle of a right triangle is 34°. what is the measurement of the third angle?

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.

Polynomial that can be factored as (3x-4)(3x+4)