What is the factored from 3x+24y
2 answers:
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Answer:
Step-by-step explanation:
7a + 7c = 861 ...... <em>(1)</em>
7a + 5c = 829 ..... <em>(2)</em>
<em>(1)</em> - <em>(2)</em>
2c = 32
<u><em>c = 16</em></u>
<u><em>a = </em></u>123 - 16 =<u><em> 107</em></u>
Answer:
y = (x + 9)² + 9
Step-by-step explanation:
the equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
given a parabola in standard form : ax² + bx + c : a ≠ 0
the the x-coordinate of the vertex is
= -
y = x² + 18x + 90 is in standard form
with a = 1, b= 18 and c = 90
= -
= - 9
to find the corresponding y-coordinate substitute x = - 9 into the equation
y = (- 9)² + 18(- 9) + 90 = 81 - 162 + 90 = 9
⇒ y = (x + 9)² + 9 ← in vertex form