A system has three components in parallel with reliabilities 0.9, 0.7, and 0.5. System reliability is: a. 0.315
b. 0.700
c. 0.900
d. 0.985
e. 2.100

0.985

Explanation:

A system contains three components that are arranged in parallel, they include 0.9, 0.7 and 0.5

Therefore the system reliability can be calculated as follows

= 1 - (1 -0.9)×(1-0.7)×(1-0.5)

= 1 - 0.1×0.3×0.5

= 1 - 0.1×0.15

= 1 -0.015

= 0.985

Hencd the system reliability is 0.985

answer may be d i think

b. a single paragraph.

a paragraph is a series of sentences that are organized and make sense, and are all related to a single topic . almost every piece of writing you do that is longer than a few sentences should be organized into paragraphs. this is because paragraphs show a reader where the subdivisions of an essay begin and end, and thus the reader see the organization of the essay into subjects in order to be able to understand its main points.