PLZ HELPP ME I WILL PUT AS THE BRAINLIEST IF U ANSWER
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Answer: 2t + 10
Step-by-step explanation:
2t represents the number of triangles and 10 bookends the sides of the triangle(s). Notice in the picture each triangle base has a value of two, no matter how many triangles are grouped together. Now notice that no matter how many triangles are grouped together, 5 will always be on the left and right of the final picture.