# C if 3 team members are randomly selected from 11

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Chapter A / Exercise 38
A First Course in Differential Equations with Modeling Applications
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(c) If 3 team members are randomly selected from 11 coworkers, what is the probability that 1 is an electrician and 2 are builders? Round answer to nearest ten-thousandth (4 places after decimal). Show work.______________________________________________________________________________ 17. Solve the system of equations using substitution, elimination by addition, or augmented matrix methods (your choice). Show work.5? − 4? = −96? + 5? = −1
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Chapter A / Exercise 38
A First Course in Differential Equations with Modeling Applications
Zill Expert Verified
MATH 106 Finite Mathematics 2182-OL1-6380-V1 Page 7of 1018. A freight-hauling firm estimates that it will need a new forklift in six years. The estimated cost of the vehicle is \$40,000. The company sets up a sinking fund that pays 8% compounded semiannually, into which it will make semiannual payments to achieve the goal. Calculate the size of the payments.Show work.
______________________________________________________________________________ 19. According to Pricewaterhouse Coopers, "Global State of Information System Security 2015", there were 3.4 million “detected and reported information security incidents” (cyberattacks, etc.) against computer networks in the USA in 2009. In 2014, that number had risen to 42.8 million. (a) Which of the following linear equations could be used to predict annual number (in millions) of detected and reported information security incidents “y” in a given year “x”, where x= 0 represents the year 2009? Explain/show work. ?. ? = 0.13? + 2009 ?. ? = 7.88? + 2009?. ? = 0.13? + 3.4 ?. ? = 7.88? + 3.4(b) Use the equation from part (a) to predict the number (in millions) of detected and reported information security incidents in the year 2017. Round answer to nearest tenth of a million. Show work. (c) Fill in the blanks to interpret the slope of the equation: The rate of change of detected and reported information security incidents against computer networks in the US with respect to time is __________ per ___________. (Include units of measurement.) 20. Bank A pays 5% compounded daily, while Bank B pays 5.12% compounded monthly. Which bank pays more? Explain. Show work
MATH 106 Finite Mathematics 2182-OL1-6380-V1 Page 8of 10______________________________________________________________________________ 21. A seed company claims that 80% of its bean seeds will germinate. If twenty of these seeds are planted in warm, moist, soil, what is the probability that exactly 16 of them will germinate? Round answer to the nearest thousandth (three places after decimal).Show work.______________________________________________________________________________
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