Is triangle a'b'c' a dilation of triangle abc? explain.
yes, it is an enlargement with a scale factor of 3.
yes, it is an enlargement with a scale factor of
o
3
•
b
8
5
5
o no, it is not a dilation because the points of the image
are not moved away from the center of dilation
proportionally.
no, it is not a dilation because the sides of the image
are proportionally reduced from the pre-image.

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

answer: answer: d) v= 1/6 bh  

step-by-step explanation:

since according to the given question,   a pyramid is placed inside a prism.

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

step-by-step explanation:

the answer is 89 d

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