Yes the square root of 1/4 is a rational number
Answer:
Never a decimal. Never a negative number.
Step-by-step explanation:
I memorize the first 12 squares. Their is never an easy way of figuring them out unless it is with a calculator.
Think of compound interest as having interest but doubling the amount.
Let the width = x
=>length = 2x-1
91= x(2x-1)=2x^2-x
2x^2-x-91=0
=(2x+13)(x-7)
=> x=-13/2=> no
=>x= 7 cm