90ft by 7ft gives an area of:
90 x 7 = 630 sq ft
1/2 fl oz is needed for each square foot
630 x 1/2 = 315 fl oz required.
X+x-17+39=180
2x+22=180
Subtract 22 from both sides
2x=158
X= 79
ANSWER
The number of children between the ages of 9 and 15 who visited the park is

EXPLANATION
The number of children between the ages of 9 and 15 who visited the park are those within the age group 9 to 12 and 12 to 15.
We can from the graph that, the height of the bar that corresponds to the age group 9 to 12

and the height of the bar that corresponds to the age group 12 to 15

The sum of the two frequencies
The smaller number is 270 and the largest number is 1635 if the difference between the two numbers is 1365.
<h3>What is a linear equation?</h3>
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
Let x and y be the smaller number and larger number respectively.
From the question:
y − x = 1365
y = 6x + 15
After solving the above two linear equations:
x + 1365 = 6x + 15
5x = 1350
x = 270
y = 1635
Thus, the smaller number is 270 and the largest number is 1635 if the difference between the two numbers is 1365.
Learn more about the linear equation here:
brainly.com/question/11897796
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