Answer:

Step-by-step explanation:
We have a 4-sided triangular pyramid
, where

The answers are 6i/13 and -6i/13. The work it attached below
Try using the simple interest formula, I=p+r or use rate of change.
The answer is C and D
First we must make one side of the equation zero, so we subtract 7 on both sides of the equation, making the equation <span>9x^2 - 6x - 6 = 0
Then we will use the quadratic formula to find the answers.
</span>using the Quadratic Formula where:
a = 9, b = -6, and c = -6
and the formula is 6 +-

/ 2(9)
Answer:
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Step-by-step explanation: