A catalog company that receives the majority of its orders by telephone conducted a study to determine how long customers were willing to wait on hold before ordering a product. The length of waiting time was found to be a random variable best approximated by an exponential distribution with a mean length of waiting time equal to 9.5 minutes. Find the waiting time at which only 9% of the customers will continue to hold. 11.8 minutes 0.9 minutes 0.1 minutes 15.8 minutes

Q: 10

A: To simplify 35+710.

Q: dactonive: 2. 2.

A: To factorise x2y2z2-16 ⇒x2y2z2-42 We know that a2-b2=a+ba-b Here a=xyz and b=4

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A:

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A: trigonometry rule

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A:

Q: 2. 14 11

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Q: 11. 6.

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