<u><em>Answer:</em></u>
<u><em>Step-by-step explanation:</em></u>
<u><em>I kind of don't understand the question. But I tried my best to understand.</em></u>
<u><em>The way I simplify it is to multiply it with each other.</em></u>
<u><em>(y + 1/3)(y - 1/3) </em></u>
<u><em>=> y² - y/3 + y/3 - 1/9</em></u>
<u><em>=> y² - 1/9</em></u>
<u><em>After simplifying, we got y² - 1/9</em></u>
45% is 45/100, divide that by 5 and you get 9/20
Answer:
The horizontal axis represents TIME
Step-by-step explanation:
In a time-series plot, the horizontal axis represents time, and the vertical axis represents the value of the variable we are measuring. -The values of the variable are plotted at each of the times, then the points are connected with straight lines.
Answer:

We can rewrite this expression like this:

And we can use the quadratic formula given by:

Where 
And replacing we got:

And solving we got:

And since the value can't be negative the answer would be x = 32.75 and the value of y = 32.75+10 =42.75
Step-by-step explanation:
For this case we know that we have a rectangular playground and the area can be founded with this formula:

Where x represent the width and y the length. From the problem we know that A =1400 m^2 and the heigth is 10m longer than the wide so we can write this condition as:

And replacing this formula into the area we got:

We can rewrite this expression like this:

And we can use the quadratic formula given by:

Where 
And replacing we got:

And solving we got:

And since the value can't be negative the answer would be x = 32.75 and the value of y = 32.75+10 =42.75