What's the answer to this Math problem?

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

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

The probability that a tutor will see 0, 1, 2, 3, or 4 students is given below determine the probability distribution's missing value.