The standard form is (x - h)2<span> = 4p (y - k), where the focus is (h, k + p) and the directrix is y = k - p. If the </span>parabola<span> is rotated so that its vertex is (h,k) and its axis of symmetry is parallel to the x-axis, it has an </span>equation<span> of (y - k)</span>2<span> = 4p (x - h), where the focus is (h + p, k) and the directrix is x = h - p.</span>
Answer:
Step-by-step explanation:
Let r be the radius of the circle, the measure of the arc is equal to:
Answer:
(x + 9)² = 36
Step-by-step explanation:
Given
x² + 18x + 57 = 12 ( subtract 57 from both sides )
x² + 18x = - 45
To complete the square
add ( half the coefficient of the x- term)² to both sides
x² + 2(9)x + 81 = - 45 + 81
(x + 9)² = 36
Answer:
2
Step-by-step explanation:
one+one=two
Answer:
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56
Step-by-step explanation:
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