In triangle ABC, <A + <B +<C = 180
plug in
3x + 7 + 2x - 8 + 5 - x = 180
4x + 4 = 180
4x = 176
x = 44
Answer
x = 44
<span>(9t-4)(-9t-4)
using the FOIL :
9t * -9t = -81 t^2
9t * -4 = -36 t
-4 * -9t = 36 t
-4 * -4 = 16
-----------------------add up and simplify
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Here is the answer, with a picture of how you do it:)
Answer:
Square pyramid
Step-by-step explanation: