Answer:
its either B or C
Step-by-step explanation:
hope it helps
sorry if its wrong
Answer:
The standard deviation is 6
Step-by-step explanation:
The scores of a given test were normally distributed with a mean of 82.

James received a 67 with a z-score of -2.5
Z score = -2.5

Formula :



Hence The standard deviation is 6
5k²-8k-45k+72 = 5k²-53k+72
Answer: 5k² - 53k + 72
Answer:
2. c) 1050 mm³
3. c) 8 yards.
Step-by-step explanation:
Given the following data;
Length = 25mm
Width = 7 mm
Height = 6 mm
To find the volume of the rectangular prism;
Volume of rectangular prism = base area * height
First of all, we would determine the base area;
Base area = length * width
Base area = 25 * 7
Base area = 175 mm²
Next, we find the volume;
Volume of rectangular prism = 175 * 6
Volume of rectangular prism = 1050 mm³
Question 2.
Given the following data;
Length = 9 yards
Width = 7.5 yards
Volume = 540 cubic yards
To find the height of the rectangular prism, x;
Volume of rectangular prism = length * width * height
540 = 9 * 7.5 * x
540 = 67.5x
x = 540/67.5
Height, x = 8 yards