This is simple proportions, because of their similarity:
Answer:
80
Step-by-step explanation:
Answer: The solution is is x=7
Step-by-step explanation:
4/3x - 1/3 = 9
+1/3 +1/3
4/3x/4/3 = 28/3
x= 7
To answer this item, we are first to calculate the values of the length of this particular metal rod that is 0.045 cm less than the given,
Lower limit = 20.5 cm - 0.045 cm = 20.455 cm
Also, we calculate for the upper limit by adding 0.045 cm to the given length.
Upper limit = 20.5 cm + 0.045 cm = 20.545 cm
Thus, the answer to this item is D.