Answer:
you ended up having = 1/n^3[1^2+2^2+3^2...(n-1)^2]
hope this helps :')
Answer:
I think it is C if you have a base nuber of 7 that is at least halfway acros it it can not be over 100
Step-by-step explanation:
Answer:
The volume of this rectangular prism is 112mm.
Step-by-step explanation:
![volume \: = \: length \times width \times height \\ v = 6.4mm \times 2.5mm \times 7mm \\ v = 112mm](https://tex.z-dn.net/?f=volume%20%5C%3A%20%20%3D%20%20%5C%3A%20length%20%5Ctimes%20width%20%5Ctimes%20height%20%5C%5C%20v%20%3D%206.4mm%20%5Ctimes%202.5mm%20%5Ctimes%207mm%20%5C%5C%20v%20%3D%20112mm)
Answer:
• x = 9
• y = 6√2
Step-by-step explanation:
The right triangles are all similar, so the ratios of hypotenuse to short side are the same:
27/x = x/3
x^2 = 81 . . . . . multiply by 3x
x = 9 . . . . . . . . take the square root
Then y can be found from the Pythagorean theorem:
x^2 = y^2 + 3^2
81 - 9 = y^2 = 72 . . . . . subtract 9
y = √72 = 6√2 . . . . . . .take the square root
The values of x and y are 9 and 6√2, respectively.
I think D is the correct answer.