A company must perform a maintenance project consisting of seven activities. The activities, their predecessors, and their respective time estimates are presented here:
Immediate
Activity Designation Predecessor Time in Days
Break down both machines A None 3
Clean machine 1 B A 3
Clean machine 2 C A 3
Re-set machine 1 D B 4
Re-set machine 2 E C 2
Re-calibrate both machines F D and E 1
Final test G F 1
Using CPM, which activities have slack in this project?
a. A, B, C
b. B, D
c. Only C
d. C, E
e. F, G

Your assessment tool contains rich data about child progress in language and literacy but no details to explain the differences between children. you decide to: a. replace the tool with another b. analyze the data using factors such as language, ability, and participation rates c. review your anecdotal notations regarding language and literacy development d. talk with families about what they are seeing at home

What is the relationship between marginal external cost, marginal social cost, and marginal private cost? a. marginal social cost equals marginal private cost plus marginal external cost. b. marginal private cost plus marginal social cost equals marginal external cost. c. marginal social cost plus marginal external cost equals marginal private cost. d. marginal external cost equals marginal private cost minus marginal social cost. marginal external cost a. is expressed in dollars, so it is not an opportunity cost b. is an opportunity cost borne by someone other than the producer c. is equal to two times the marginal private cost d. is a convenient economics concept that is not real

Acar manufacturer uses new machines that automatically assemble an engine from parts fed to the system. the machine can regulate the speed ofassembly depending on the number of parts produced. which type of technology does this machine use? angenoem mense wat ons in matin en esta va ser elthe machine uses