Find the area of the octagon. The area is _
1 answer:
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Answer:
x = 5 or x = 1
Step-by-step explanation:
x² - 6x + 7 = 0
x² - 6x = -7
x² - 6x + 9 = -7 + 9 1/2 of the x term than square it and add it the both sides.
(x - 3)(x - 3) = 2
( x -3)² = 2
=
(x - 3) = ± 2
x - 3 = 2 or x - 3 = -2
x = 5 or x = 1
To find whether the volume would be doubled when the radius is,we can find the volume of the two balloons.
The formula of a sphere is:
Let's take 丌 as 3.14
The volume of the balloon with 4cm radius:
The volume of the balloon with 8cm radius:
As we can see,
267.94668 × 2 = 535.89 ≠2145.56
Thus,she wouldn't discover that the volume is twice as big when the radius is doubled.
Hope it helps!
The formula of a sphere is:
Let's take 丌 as 3.14
The volume of the balloon with 4cm radius:
The volume of the balloon with 8cm radius:
As we can see,
267.94668 × 2 = 535.89 ≠2145.56
Thus,she wouldn't discover that the volume is twice as big when the radius is doubled.
Hope it helps!