Simplify 45

a.5

b.30

c.45

d.75

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

(x-5)1/2+5=2 what is possible solution of this equation

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.