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1129 questions found

Module 1. Mathematics

(6 - 2) - (6 - 9) / (-3 + (-3))

  • 3 1/2.
  • 4.
  • 4 1/2.
SirPitz asking:

Isn’t this - 7/6?

Module 1. Mathematics

What is 10! / 8!?

  • 1.25, because 10/8 = 1.25, dividing the arguments of the factorials gives 1.25 which is not how factorial division works
  • 2, because 10 - 8 = 2, subtracting the factorial arguments gives the difference but not the ratio of factorials here
  • 90, because 10!/8! = 10 x 9 = 90, the remaining factors after cancellation are 10 and 9 which multiply to 90
Stavros asking:

Πως βγαίνει αυτό

Module 1. Mathematics

What is the area of the trapezium shown?

Diagram for question: What is the area of the trapezium shown?
  • 24 cm^2
  • 27 cm^2
  • Area cannot be calculated from information given.
Elia asking:

but after have analized the drowning, the real drowing, after some calculations is different from that...the left side, is inclined whit negative value (le lef side gone to the right of the upper base, like that ________
\
\____________\)
because the right angle is about 62.7° so the long of the base of that triangol is little above 2.1, 7-2.01 =4.99 that means what I have wrote

Module 14. Propulsion

A compressor shaft rotates on

  • sintered bearings
  • ball and roller bearings
  • plain bearings
Spaceresearcher asking:

What about Needle Roller bearings, those are not balls?

Module 17. Propeller

When a propeller is removed, the securing parts are kept with

  • all separately in cases.
  • the propeller.
  • the engine.
bigbear asking:

WHY NOT KEEP WITH PROPELLER?

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