Answer:
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Answer:
first and second one, and fourth one
Step-by-step explanation:
By the converse of the Pythagorean Theorem, if 8.6 ^2 = 8.1 ^2 + 2.6 ^2 , then the triangle is right. 73.96 is not equal to 72.37 so the triangle is not a right triangle.
8.6^2 is greater than (8.1^2 + 2.6^2) which means that the triangle is obtuse.
The obtuse angle is opposite the 8.6 side.
5 + (46 + 7) x 2
5 + (53) x 2
5 + 106
111 is answer
PEMDAS (parenthesis, exponent, multiply & divide, add & subtract)
hope this helps
Perentheses, probably do multiplication.
