Avibx8x8
27.02.2021 •
Mathematics
The whole problem in the picture sorry
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Ответ:
105
Step-by-step explanation:
-R and C are congruent
-B and S are congruent
- That means T and A are congruent
So that means C=19 B= 56 and A= 105
remember a triangle has 180 degrees
each of those marks represent congruent figures and angles.
Ответ:
Step-by-step explanation:
Expressions of the form (a +b)(a +b) will result in a perfect square trinomial, because both binomial factors are identical.
Expressions of the form (a +b)(a -b) will result in a difference of squares.
Match the offered choices to either one of these forms, and they will be included in the answer set.
(5x + 3)(5x - 3) -- difference of squares
(7x + 4)(7x + 4) -- perfect square
(2x + 1)(x + 2) -- nothing special
(4x-6)(x + 8) -- nothing special
(x - 9)(x - 9) -- perfect square
(-3x-6)(-3x+6) -- difference of squares