The winning speed in the 2011 indianapolis 500 was 170.265 miles per hour. what
is that speed rounded to the nearest tenth of a mile per hour?
»
170.3 miles per hour
170 miles per hour
>
170.2 miles per hour
»
170.27 miles per hour
on

170.3

Step-by-step explanation:

Round the 2 up because it is followed by a 6

tenths is the first place after the decimal point

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

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