Answer:
I'd say that it is 3:4 because
Step-by-step explanation:
9 is 3/4s of 12.
12 is 3/4s of 16
15 is 3/4s of 20.
Hope this helped you out!
Answer:
C) A =
Step-by-step explanation:
First, read through what the question is asking.
Now, read it again, but slowly and take in everything it is saying (Don't read into it too slowly, or else you will over-complicate the problem and get frustrated - told from experience :) )
Alright, 4 less than 3 times the width. So, lets rearrange this and give width a variable (w).
So, the length is equal to:
l = 3w - 4
and the width is equal to:
w = w
The area of a rectangle is A = l * w
Let's plug in the values.
A = (3w - 4) * w
Now, simplify:
A =
A = is your final answer.
I hope this helps!
Quadrant for for number 5
Answer:
The 80% confidence interval for the population proportion of disks which are defective is (0.059, 0.079).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
Suppose a sample of 1067 floppy disks is drawn. Of these disks, 74 were defective.
This means that
80% confidence level
So , z is the value of Z that has a pvalue of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 80% confidence interval for the population proportion of disks which are defective is (0.059, 0.079).
The area of a 2D form is the amount of space within its perimeter. The area of the composite figure is 198.5714 cm².
<h3>What is an area?</h3>
The area of a 2D form is the amount of space within its perimeter. It is measured in square units such as cm2, m2, and so on. To find the area of a square formula or another quadrilateral, multiply its length by its width.
The area of the composite figure is the sum of the area of the circle and the area of the rectangle.
Area = Area of circle + Area of rectangle
= (π×5²) + (10×12)
= 78.5714 cm² + 120 cm²
= 198.5714 cm²
Hence, the area of the composite figure is 198.5714 cm².
Learn more about the Area:
brainly.com/question/1631786
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