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I swear im not good at math and i need help (images are not in order so sorry )

I swear im not good at math and i need help (images are not in order so sorry )-example-1
I swear im not good at math and i need help (images are not in order so sorry )-example-1
I swear im not good at math and i need help (images are not in order so sorry )-example-2
I swear im not good at math and i need help (images are not in order so sorry )-example-3

2 Answers

8 votes

Answer:

The 1st choice

Explanation:

(a) the first and second ones are the only triangles with all three acute angles. The 2nd one has more than 1 line of symmetry so the 1st must be the answer.
(b) This one really depends on which side of the triangle is each length. One way to do it is A squared + B squared = C squared. 8 equals c because it is the largest side and 7.5 is A. This would be put out like 56.25 + B = 64. Subtract 56.25 from both sides to get B = 7.75.
OR, if 8 is not the longest side 7.5 squared + 8 squared = C squared which would be 120.25 = C squared. So, you would find the square root of 120.25 which is 10.97.

User Andrew Scagnelli
by
8.3k points
7 votes
part a answer is the first triangle
User Kenny Grant
by
7.5k points

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