A marketing firm is considering making up to three new hires. Given its specific needs, the management feels that there is a 60% chance of hiring at least two candidates. There is only a 10% chance that it will not make any hires and a 20% chance that it will make all three hires. a. What is the probability that the firm will make at least one hire? (Round your answer to 2 decimal places.) Probability b. Find the expected value and the standard deviation of the number of hires. (Round your final answers to 2 decimal places.) Expected value Standard deviation

step-by-step explanation:

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the circumference of a circle is, 10.676 cm.

step-by-step explanation:

the formula for circumference of a circle is given by:

where

c is the circumference of a circle and

d is the diameter of a circle.

given: diameter(d) = 3.4 cm and use

substitute these values in [1] we get;

cm

therefore, the circumference of a circle is, 10.676 cm

look in attachments

step-by-step explanation:

a = (-2, 0)

b= (-4, 0)

c = (-5,2)

d = (-1,2)