Answer:
n = 5
Step-by-step explanation:
Given
= ( cross- multiply )
18n = 90 ( divide both sides by 18 )
n = 5
Answer:
<h2>(-1, 17)</h2>
Step-by-step explanation:
The vertex form of a quadratic equation:
<em>(h, k)</em> - vertex
<em>use (a + b)² = a² + 2ab + b² </em><em>(*)</em>
<em>h = -1, k = 17</em>