<em>Detailed</em><em> </em><em>solution</em><em> </em><em>is</em><em> </em><em>attached</em><em>!</em><em>!</em><em>~</em>
- <u>Diagram</u><u> </u><u>for</u><u> </u><u>ques</u><u>.</u><u> </u><u>3</u><u> </u><u>is</u><u> </u><u>also</u><u> </u><u>attached</u><u>!</u><u>!</u>
Answer: 10m, 33m, and 29m
Step-by-step explanation:
n + 3n+3 + 3n-1 = 72m
7n+2=72m
7n = 72-2
n = 70/7
n = 10
180 * 365 = 65700 litres/year
65700 / 1000 = 65.7 m^3/year
0.9122 * 65.7 = £59.932 for water used
28.20 + 59.93 = £88.13 for water meter annually
£88.13 < £107 so yes, he should have a water meter.
The solution of the quadratic equation x² - 2 · x = - 26 is x = 2 ± i √ 22.
<h3>How to solve a quadratic equation by completing the square</h3>
Completing the square is an algebra-based method used both to simplify and to solve analytically quadratic equations. In this problem we proceed to complete the square to solve the equation, whose procedure is shown in detail:
x² - 2 · x = - 26 Given
x² - 2 · x + 4 = - 22 Compatibility with addition / Definition of subtraction
(x - 2)² = - 22 a² + 2 · a · b + b² = (a + b)²
x - 2 = ± √(- 22) Definition of square root
x - 2 = ± i √ 22 Definition of complex number
x = 2 ± i √ 22 Compatibility with addition / Existence of the additive inverse / Modulative property / Result
The solution of the quadratic equation x² - 2 · x = - 26 is x = 2 ± i √ 22.
To learn more on quadratic equations: brainly.com/question/17177510
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Answer:
0.25
Step-by-step explanation: