Answer:
C
Step-by-step explanation:
When trying to solve a system of equations graphically, our focus is on identifying the coordinates of any point through which the graphs go. Look at the above graph: you'll see that the red and the blue graphs intersect at (0,2), and so (0,2) is a "solution" of that system of equations.
Here, we're asked to answer a different kind of question: "Is (2,0) a solution to the given system of equations?" Let's paraphrase that question: "Do both graphs go through (2,0)?" The answer: emphatically not. Neither graph goes through (2,0). Thus, (2,0) is not a solution to this system of equations.
Answer:
Answer is <u>C</u>
Step-by-step explanation:
This is because Lithium =2.8.1
Sodium=2.8.8.1
<em>Valence</em><em> </em><em>electron</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>electron</em><em> </em><em>located</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>last</em><em> </em><em>shell</em>
Hope this is correct and helpful
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Answer:
18 inches
Step-by-step explanation:
Given
--- radius
--- distance between chord and the center of the circle
Required
The chord length
See attachment for illustration
First, calculate distance AX using Pythagoras theorem.
This gives:
Collect like terms
Take square roots of both sides
AB is then calculated as:
Where:
So:
