BC is perpendicular to AC; and CE is perpendicular to AB; EC is perpendicular to AC Prove: ΔBEC~ΔCDE

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

What are the domain and range of the function f(x)=2^x+1