Answer:
Step-by-step explanation:
perimeter = 2(4ft+7ft) = 2*11ft = 22ft
Let
x-------> the length side of the original square garden
Step 1
<u>Find the value of x</u>
we know that

taking square root both sides




the solution is

therefore
<u>the answer Part a) is</u>
The original length side of the square garden is 
Step 2
<u>Find the area of the original square garden</u>
we know that
the area of the original square garden is equal to

substitute the value of x in the formula

therefore
<u>the answer part b) is</u>
the area of the original square garden is 
Answer:
Rotation because it is the right answer due to dialations changing size and reflections and translations would not change the way the shape is oriented.
Answer:
A. 6 sq. units
Step-by-step explanation:
Area of a triangle can be found with base times height divided by 2
The base is 6 and the height is 2
6x2= 12, 12/2 is 6
A. 6 sq. units
Answer:
The correct option is (c).
Step-by-step explanation:
The assumptions of a two-sample <em>t</em>-test are:
- Independent samples
- Normality
- Equal variances
It is provided that the sample of selected for American adults under the age of 40 is of size, <em>n</em>₁ = 488 and the sample of selected for American adults aged 40 or over is of size, <em>n</em>₂ = 421.
As the sample size is quite large the according to the Central limit theorem the sampling distribution of the sample mean would follow a Normal distribution.
And even if the sample was selected by dialing of various telephone numbers, the sample is not biased since the size of the sample is too large.
So, the sample can be considered as a simple random sample.
Thus, the conditions for two-sample t inference are satisfied.
The correct option is (c).