Two planes intersect in exactly _____.
2 answers:
Answer:
C. one line
Step-by-step explanation:
A plane is a two-dimensional figure which is a flat in surface.
Imagine two planes, like you can take two plain plate of the same size, when you intersect one by another by vertical, you will get a line.
Let me show you a figure here.
You can see the green line.
So the two planes insect in exactly one line.
Answer: C. One line
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Answer:
x = ± 12
Step-by-step explanation:
Given
f(x) = x² - 144
To find the roots set f(x) = 0, that is
x² - 144 = 0 ( add 144 to both sides )
x² = 144 ( take the square root of both sides )
x = ± = ± 12
Given:
The two expressions are
To find:
Whether the given expression are equivalent or non-equivalent.
Solution:
If two expressions are looking different but they are equal after simplification, then they are called equivalent expressions.
The first expression is
The first expression is equal to the second expression after the simplification.
Therefore, the given expressions are equivalent.