Is the decimal 9.21954457 an irrational number?

No.

Step-by-step explanation:

No, because it is a terminating decimal and can be written as a/b where a and b are integers, so it is rational.

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3

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