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nataliaalejandradasi
12.03.2022 •
Mathematics
Help me please because it supposed to be part of my grade
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Ответ:
148 mm2 this is your total surface area
Step-by-step explanation:
Ответ:
15 !
Step-by-step explanation:
Ответ:
centre = (- 2, 3 ), radius = 3
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Given
x² + 4x + y² - 6y = - 4
Using the method of completing the square.
add ( half the coefficient of the x/ y terms )² to both sides
x² + 2(2)x + 4 + y² + 2(- 3)y + 9 = - 4 + 4 + 9, that is
(x + 2)² + (y - 3)² = 9 ← in standard form
with centre = (- 2, 3 ) and r =
= 3