Keliling segitiga ABC dari A (2,-1), B (1, -2) dan C (3,5) adalah... A. √92
B. 11√148
C. 11√2 + 2√73
D. √2 + √37 + √53

tolong dijawab pakai cara ya, terimakasih

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.