Amu of unknown element = 40 - (20% * 40)
= 40 - 8
= 38 amu
therefore, the approximate weight of the unknown element is 38 amu.
hope this helps.
Answer:
y = -6x + 20
Step-by-step explanation:
<h3><u>Answer</u> :</h3>
Given equation : 3x² - 4 = 2x
We have to find discriminant of the equation 
⭆ 3x² - 4 = 2x
⭆ 3x² - 2x - 4 = 0
By comparing this equation with ax²+bx+c, we get
Discriminant (D) = b² - 4ac
⭆ D = (-2)² - 4(3)(-4)
⭆ D = 4 + 48
⭆<u> D = 52</u>
<h3>
Hope It Helps!</h3>
Answer:
c
Step-by-step explanation:
They lie in different planes but will intersect if a plane is drawn to contain both lines