The answer will be B) 42%
Answer:
u² + 2u + <u>1</u>
Step-by-step explanation:
In the question it's asking to find the the number in the blank to make the expression a perfect square.
Let the number in the blank be 'x'.
To guess 'x' , use the algebraic identity :- 
While matching the expression with identity , the expression will look like this :- <em>u² + 2ux + </em><u><em>x²</em></u>
In the expression given in the question , it's "2u" but after matching the expression with identity , it is found to be "2ux".
⇒ x = 1 (∵ If x will be 1 , then 2ux = 2×u×1 = 2u)
⇒ <u>x²</u> = <u>1</u>
∴ The number in the blank is 1.
500- 300 = 200
750 - 725 = 25
200÷ 25 = 8
it will take them 8 months for the total rent to cost the same
Natural numbers are all whole, positive numbers. Like 1, 2, 3, 4, 5...
Rational numbers are numbers that can be expressed as a fraction, though they dont have to be a fraction.
Rational numbers are <u>sometimes </u>natural numbers.
<span>4 + x + 4 + x x4 4(x + 4) 4x</span>