According to a recent poll at a​ university, 73.9​% of high school seniors in a certain region had a​ driver's license. A sociologist thinks this rate has declined. The sociologist surveys 550 randomly selected high school seniors and finds that 395 have a​ driver's license. a. Pick the correct null hypothesis. b. Pick the correct alternative hypothesis. c. In this​ context, what does the symbol p​ represent?

Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

Measures of the angle of r, 31 s (x+4) t (3x+9)

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.