Step-by-step explanation:
-4x - 2y = 18
+ (4x - 4y = -36)
=> -6y = -18, y = 3
As we added the equations together, we have eliminated x and found y.
Hence the correct answer is "Add to eliminate x".
Answer:
The length of the longest side is 13mm
Step-by-step explanation:
Represent the two sides with a and b, where a is the longest
Required
Determine the length of the longest side
Perimeter of a kite is calculated as thus:
Make b the subject in
Substitute a - 1 for b and 50 for Perimeter in
Divide through by 2
Add 1 to both sides
Solve for a
<em>Hence, the length of the longest side is 13mm</em>
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