Answer:
<h2>(-5, -28)</h2>
Step-by-step explanation:
The vertex form of a quadratic function <em>f(x) = ax² + bx + c</em>:
f(x) = a(x - h)² + k
(h, k) - coordinates of a vertex
We have <em>f(x) = x² + 10x - 3</em> in the vertex form <em>f(x) = (x + 5)² - 28</em>.
f(x) = (x - (-5))² + (-28) → h = -5, k = -28
Answer:
Green circle= 4 pi or 12.56. Blue circle=0.79 or 0.25 pi. Yellow circle= 6.25 pi or 19.63. Orange= 2.25 pi or 7.07.
Step-by-step explanation:
π (Pi) times the Radius squared: A = π r2
or, when you know the Diameter: A = (π/4) × D2
or, when you know the Circumference: A = C2 / 4π
Example: What is the area of a circle with radius of 2 m ?
Radius = r = 2
Area = π r²
= π × 2²
= 3.14159... × (2 × 2 )
= 12.56 m² (to 2 decimal places)
or you can keep it like:
=4 π m²
If you wanted to be exact, you would use pi.
Thank you!!
Correct me if I'm wrong please!
