Answer:
The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.
Step-by-step explanation:
Normal variables
Normal variables have mean 
and standard deviation 
When we add normal variables, the combined mean is the sum of both means, and the standard deviation is the square root of the sum of both variances. The distribution is still normal.
In this question:
Verbal: 
.
Math: 
Combined:
The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.
A = x * x = x^2
B = 6 * x = 6x
C = 8 * x = 8x
D = 6 * 8 = 48
So the area of the whole shape is each side added up then multiplied to give (x+6)(x+8) =
x^2 + 14x + 48
Ten times 45 is equal to 450
6 for the two bases = 12
6 x 2 = 12 for the 4 faces = 48
48+12 = 60 cm^2
Im am very excited aswell. I cant wait to learn what you have to teach me.i love that you are my teacher and i really hope for the best. I cant imagin being in your place right now, you have a bunch of students and they must all have at least one question. It probably gets hard somtimes but thats when you have to power through. I will help you as much as i can because it is what i do. When you tell me that your excited it gives me hope, hope that i will suceed and finish this class better then i was when i started. I am 100% way more excited then your are. Than you so much for this oppertunity.
I am taking this class because i want to iprove in math. I love math and i want to see myself get better. THank you again for everything.
