Is the number 65.4349224 rational or irrational explain

We have that 65.4349224  is a Rational Number

From the Question we are given  

65.4349224

A rational number is a number that can be identified as a whole number or a fraction  

Therefore  

65.4349224  is a rational Number

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Irrational.

Step-by-step explanation:

We have been given a number 65.4349224. We are asked to determine whether our given number is rational or irrational.

We know that a rational number is a number which can be represented as a fraction. All integers, finite decimals and recurring decimals are rational numbers.

An irrational number is a number which cannot be represented as a fraction.

We can see that our given number has non terminating decimal and digits after decimal are not repeating, therefore, our given number cannot be written as a fraction.

step-by-step explanation:

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second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.