<span>15.1, 15.2, 15.3
-</span>Lucy ☃︎
Triangle PQR is given to be a right triangle, so the Pythagorean theorem can be used to determine that RQ² + PR² = PQ².
<h3>What is Pythagorean theorem?</h3>
Pythagorean theorem is a mathematical expression in Euclidean geometry that can be used to solve for any of the three (3) side lengths of a right triangle.
Mathematically, Pythagorean's theorem is given by this formula:
x² + y² = z²
Triangle PQR is given to be a right triangle, so the Pythagorean theorem can be used to determine that RQ² + PR² = PQ². It is given that x² + y² = z² in triangle ABC, so z² = PQ² or AB = PQ.
The above information shows that the triangles are congruent because their three (3) sides are congruent. Therefore, to show that triangle PQR is a right triangle, we can use corresponding parts of the congruent triangles to show that PQ = AB, PR = AC and QR = BC.
Read more on Pythagorean theorem here: brainly.com/question/23200848
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Answer:
16200
Step-by-step explanation:
30000 * (1-0.05)¹² = 30000 * 0.54 = 16200
1st year : 30000 * (1-0.05) = 28500
2nd year: 28500 * (1-0.05) = 30000 * (1-0.05)² = 27075
....
12th year: 30000 * (1-0.05)¹² = 16200