3 years ago

8.1 ÷ 0.9+0.4^3 ÷ 0.8 ⋅ 30

Mathematics

2 answers:

EastWind [94]3 years ago

7 0

Answer:

11.4

Step-by-step explanation:

polet [3.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

I think so if it’s wrong

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Paraphin [41]

Answer:

The correct option is: 11.5

Step-by-step explanation:

Suppose, the length of the unknown side is $x$

So, here the length of hypotenuse is 14 and the lengths of other two sides are 8 and $x$ .

As the given triangle is right angle triangle, so using Pythagorean theorem, we will get.........

$8^2+x^2= 14^2\\ \\ 64+x^2=196\\ \\ x^2=196-64=132\\ \\ x=\sqrt{132}=11.489...\approx 11.5$

(Rounded to the nearest tenth)

So, the length of the unknown side is 11.5

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