Question
Identify the element with the electronic configuration
of 2, 8, 7.Solution
The electronic configuration of 2, 8, 7 indicates an element with a total of 17 electrons, which corresponds to Chlorine. Chlorine is positioned in the 17th group of the periodic table and is known for its high reactivity and halogen family characteristics.
Solve the quadratic equations and determine the relation between x and y:
Equation 1: 21x² - 122x + 160 = 0
Equation 2: 23y² - 159y + ...
I. 20y² - 13y + 2 = 0
II. 6x² - 25x + 14 = 0
I. 35x² - 24x – 35 = 0
II. 72y² - 145y + 72 = 0
I. 7x² + 27x + 18 = 0
II. 19y² - 27y + 8 = 0
I. 5x² = 19x – 12
II. 5y² + 11y = 12
I. 6x2 + 23x + 10 = 0
II. 2y2 - 3y - 5 = 0
Equation 1: x² - 220x + 12100 = 0
Equation 2: y² - 210y + 11025 = 0
I. x2 – 12x + 32 = 0
II. y2 + y - 20 = 0
I. 5x² -14x + 8 = 0
II. 2y² + 17y + 36 = 0
I. x2 – 36 = 0
II. y2 - 7y + 6 = 0
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