Find the foci for the ellipse given by the equation: 9x^2 + 25y^2 = 225
a. (5, 0) and (-5, 0) c. (0, 3) and (0, -3) b. (4, 0) and (-4, 0) d. (0, 0) and (-1, 0)

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

Plzzz answer both questions and i will give you 100 points

What else equals 42 and 30 for multiply