hi
u0 = 64 with u(n+1) = un *0.75
u3 = 64 *0.75^3 = 27
sum is : 64 * ( 0.75^4 -1) / 0.75-1 = 175
manual proof : 64 + 48+36+27 = 175
120 , 1/2 cubes in order to fill the entire cube
First you need to expand them
(x^2 + 9) + (2x + 6)
then you add them together
x^2 + 2x + 15
now you can factorise it
i hope this helped you
Applying the distance formula, DE = a. Therefore, the missing information is: A. a.
<h3>What is the Distance Formula?</h3>
Distance Formula for determining the distance between two points on a coordinate plane is given as:
.
In the proof given, applying the distance formula to find DE, we have:
DE = √[(a + b - b)² + (c - c)²}
Simplifying this, we would have:
DE = √(a² + 0²) = √(a²)
DE = a
Therefore, the missing information in the proof is: A. a.
Learn more about distance formula on:
brainly.com/question/661229
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Use photo math it’s an app it will give u the answer u need