Would the scale factor 4/5 reduce, enlarge, or preserve?
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would the scale factor 7/2 reduce, enlarge, or preserve?

4/5 will reduce and 7/2 will enlarge.

Step-by-step explanation:

Ok, a scale factor is a number that can affect a given quantity, suppose the length of a segment, by multiplicating it.

Now, if the scale factor is greater than one, you will be doing a dilatation (this means that the length is increased)

If the scale factor is less than one, you will be doing a contraction (the length will be decreased)

If the scale factor is 1, you are preserving, this means that the scale factor = 1 does not affect the system.

now, we have:

4/5) here, because the numerator is smaller than the denominator we know that the fraction 4/5 must be smaller than one, so this scale factor will reduce.

7/2) Here we have that the numerator is greater than the denominator, so this number is greater than one, then this scale factor will enlarge

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)