Mid-west publishing company publishes college textbooks. the company operates an 800 telephone number whereby potential adopters can ask questions about forthcoming texts, request examination copies of texts, and place orders. currently, two extension lines are used, with two representatives handling the telephone inquiries. calls occurring when both extension lines are being used receive a busy signal; no waiting is allowed. each representative can accommodate an average of 12 calls per hour. the arrival rate is 20 calls per hour.(a) how many extension lines should be used if the company wants to handle 90% of the calls immediately? (b) what is the probability that a call will receive a busy signal if your recommendation in part (a) is used? (c) what percentage of calls receive a busy signal for the current telephone system with two extension lines?

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363

there are infinitely many solutions.

which would be true for stem changing verbs?

they have a consistent spelling change in the stem of the verb.

what is different about the verb “venir” as compared to other stem-changing verbs?

only the third person forms have a stem change.

which of the following could not be considered a “stem-changing” verb?

querer

which of the following would not be condsidered an event?

desfile

what word could be used in response to the following?

¿qué quieres comprar?

quero

what word could be used in response to the following?

¿dónde uds. pueden ir?

vamos  

ellos ir al centro comercial.

yo comprar un vestido.

pedimos

dónde tú?

dormes

step-by-step explanation:

52 \43 i don't know this i tried