Using the Pythagorean theorem:
x^2 + (x-2)^2 = (√20)^2
Simplify the right side:
x^2 + (x-2)^2 = 20
Subtract 20 from both sides:
x^2 + (x-2)^2 - 20 = 0
Factor:
(x-4)(x+2) = 0
Solve for each x:
x = 4 and x = -2
The side cant be a negative value, so the answer would be x = 4
The answer is B.
Short method: multiply constants

Long mothod: expand it

Answer: 42
Answer:
no you dont
Step-by-step explanation:
50% off means half price, so half of 49.98 is 24.99
the necklace now costs 24.99 dollars