What statement best describes the pattern of valence electrons seen on the periodic table?
A. The number of valence electrons increases across a period from left to right, and the valence shell number decreases from top to bottom.
B. The number of valence electrons decreases across a period from left to right, and the valence shell number decreases from top to bottom.
C. The number of valence electrons decreases across a period from left to right, and the valence shell number increases from top to bottom.
D. The number of valence electrons increases across a period from left to right, and the valence shell number increases from top to bottom.
Answer (3)
The perimeter of a rectangle is the length of two widths plus two lengths. You have the width as 74 yard so your formula is 2(74) + 2L = 344. 2x74=148 so 148 + 2L=344. Subtract 148 from both sides and get 196. 2L=196. Divide both sides by 2 and you get L= 98
P = 2L + 2w
344 = 2L + 2ยท74
344 - 148 = 2L
2L = 196
L = 196 : 2
L = 98 yards
The length of the rectangular field is 98 yards. This was calculated using the perimeter formula. By substituting the known values and solving for length, we found the answer.
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