Given that 221 base X=25 base 10

The base for 221 is 3.

convert one Number into decimal Number and then with the base x, convert another Number into Decimal Number and equate them to find the value of x.

So, (25)10 = 2(10)+5+0

(221)x is  in Decimal System.

Now, solving the equation

x=-4 is neglected as the base cannot be negative.

Thus the base for 221 is 3.

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answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.

5.762159

step-by-step explanation:

it would be 9 because when it is the nine is over five so that would mean it rounds up to 90 or 9