2x – 4y = 24
x + 3y = 7
Solve by elimination

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?