Answer:
Go on Desmos
Step-by-step explanation:
The complete equation is x^2 - 4x + (-2) = (-2)^2
<h3>How to complete the equation?</h3>
The equation is given as:
x^2 - 4x + __ = (__)^2
_____________________________
Take the coefficient of x
k = -4
Divide by 2
k/2 = -4/2
k/2 = -2
Square both sides
(k/2)^2 = (-2)^2
_____________________________
Add the result of the above computation to both sides of x^2 - 4x + __ = (__)^2
So, we have:
x^2 - 4x + (-2) = (-2)^2
Hence, the complete equation is x^2 - 4x + (-2) = (-2)^2
Read more about completing the square at:
brainly.com/question/16483306
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Answer:
decay rate is -13 percent in an hour. 3 hours would be (0.87)^3 = 65.85 percent
Answer:
6 plates needed
Step-by-step explanation:
2 dozen= 24
3 dozen = 36
24+36=60
60 ÷ 10=6
6 plates needed
