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which of the following demonstrates the correct first step in copying an angle?

create a line that intersects the angle.
draw a ray with one endpoint.
create a point outside of the angle.
swing an arc that intersects the angle's rays.

Ineed to learn how to solve this problem

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.