Answer:
400 is a rational number because it can be expressed as the quotient of two intergers 400 divided by 1
Step-by-step explanation:
the square root of 400 is rational because the product is 20 which is a whole number making it a rational number because a rational number is any interger, fraction , terminating decimal, or repeating decimal.
The answer is 126.58
You first double the 4 which is 16, then you multiply the 16 by 25 to get 400. Next, you have to subtract 25 from 15 to get 10. Then, you square root the 10, becoming 3.16
Finally, you divide the 400 by 3.16 to have the final answer: 126.58
-5 4/5 because it is less than -5