4. Given the equation of an ellipse, identify the center point: 4x2 + 40x + 25y2 − 100y + 100 = 0. A)The center point of the ellipse is (−5, −2).
B)The center point of the ellipse is (5, −2).
C)The center point of the ellipse is (5, 2).
D)The center point of the ellipse is (−5, 2).

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.