Mathematics, 18.12.2020 05:00 FlyingUnicorn123
An instructor gives an exam with thirteen questions. Students are allowed to choose any ten to answer.
(a) How many different choices of ten questions are there?
(b) Suppose five questions require proof and eight do not.
(1) How many groups of ten questions contain three that require proof and seven that do not?
(ID) How many groups of ten questions contain at least one that requires proof?
(HI) How many groups of ten questions contain at most three that require proof?
(c) Suppose the exam instructions specify that at most one of questions 1 and 2 may be included among the ten. How many
different choices of ten questions are there?
I
(d) Suppose the exam instructions specify that either both questions 1 and 2 are to be included among the ten or neither is
to be included. How many different choices of ten questions are there?
Answers: 3
Mathematics, 21.06.2019 19:00, ksiandua07
65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?
Answers: 1
Mathematics, 22.06.2019 02:30, stressedstudent6402
Chosen according to the volume of oil it can haul, as shown in at a railway yard, locomotives are used to haul containers carrying the table. locomotive capacity a450 0 -750 cubic feet cg35 750-1,500 cubic feet br73 1,500-2,500 cubic feet yh61 2,500-3,500 cubic feet & the four cylindrical containers listed in the table need to be hauled. cylinder length (ft.) diameter (ft.) fill level a 40 , 12 half b 24 8 full c 16 16 full 6 12 full d match each container to the locomotive needed to haulit a450 cylinder a yh61 cylinder d
Answers: 2
Mathematics, 22.06.2019 03:30, keyonaemanieevans
The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.
Answers: 1
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