the present age of brother and sister are in the ratio 4:5. before three years the ratio of their age was 3:4 find their present age

For the function, f(x) = -5x 2, find f(-4).

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then