A = 16 over 49
b= 2 then 1 over 10
On your calculator, use the normalcdf() function, enter the Lower Limit, Upper Limit, Mean, and Standard deviation.
The mean and standard deviation are given to you. You want to find "less than 13.5 seconds", meaning that 13.5 is the maximum "Upper Limit" and 0 would be the Lower Limit because we can pretend 0 second is the minimum. Don't worry about negatives, in this scenario, values like "-5 seconds" are impossible.
Enter normalcdf(0, 13.5, 13.56, 2.24) in a calculator and the output result is the answer.
Answer:
162 inches.
Step-by-step explanation:
Please consider the complete question.
Carlos is helping his grandmother make a rug. They have 5 yards of fabric, which is equal to 180 inches. They need an additional of 4 1/2 yards of fabric to finish the trim. How many inches are in
yards?
Let us convert
into improper fraction as:

Now, we will use proportions to solve our given problem as:



To find number of inches in 9/2 yards, we will multiply 9/2 by 36 as:



Therefore, there are 162 inches in
yards.