Answer:
(c+y)*7
Step-by-step explanation:
Given one side of the garden is x feet long.
So, let's assume length = x
He plans to use 120 feet of fencing. Fencing means the perimeterof the rectangle.
So, p = 120
2 *length + 2* width = 120
2x + 2 *width = 120
2x + 2* width - 2x = 120 -2x Subtract 2x from each sides of the equation.
2* width = 120 - 2x
Width = 60 - x Divide each sides by 2 to isolate width.
Now area of the rectangle will be:
Area = Length * width
= x * (60-x)
So, the model to find the area of the rectangle is x(60 -x) square feet.
Hope this helps you!
Jim’s age is 8 years old.
Steps:
The sum is x + 3x = 32
We solve for x:
x + 3x = 32
4x = 32
x = 8
Answer:
a) 4.60 (2 dp)
b) 1.31 (2 dp)
c) 8.8
Step-by-step explanation:
The "Frequency" part of a frequency table is the measure of how often the data value occurs.
To calculate the mean of data presented in a frequency table, we need to multiply each data value by its given frequency, sum these, then divide by the sum of the frequency.
The formula for mean is:
<h3><u>Part (a)</u></h3>
Add a row showing the values of
Add a column showing the totals of and
Now use the formula to calculate the mean:
<h3><u>Part (b)</u></h3>
Add a column showing the values of
Add a row showing the totals of and
Now use the formula to calculate the mean:
<h3><u>Part (c)</u></h3>
Add a column showing the values of
Add a row showing the totals of and
Now use the formula to calculate the mean: