∠a and \angle b∠b are vertical angles. if m\angle a=(4x+23)^{\circ}∠a=(4x+23) ∘ and m\angle b=(5x-7)^{\circ}∠b=(5x−7) ∘ , then find the measure of \angle b∠b.

What fraction of one year is 8 months

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

The area of the map is the product of the length and width. write and expression for the area as the product of the two binomials do not multiply