2,000 +3,500+4,000+6,000+10,000=what

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Find the measure of the angle indicated in bold

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.