Answer:
4
Step-by-step explanation:
use the distace formula:
square root of (x2-x1)^2 + (y2-y1)^2
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(-1) to the power of an even number is +1.
(-1) to the power of an odd number is -1.
Since 50 is an even number, (-1)⁵⁰ = 1.
2(2x+5)=8x-18
2x+5=4x-9
2x=14
x=7
MN=2*7+5=19
