After many studies, a researcher finds that the probability a word-recognition program correctly interprets a hand-written word is nine tenths
. How many words would the researcher expect the program to interpret correctly out of 40 words?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120