Answer:
a =1
Step-by-step explanation:
2(a+7)-7=9
Add 7 to each side
2(a+7)-7+7=9+7
2(a+7)=16
Divide by 2
a+7 = 16/2
a +7 = 8
Subtract 7
a+7-7 = 8-7
a = 1
Answer:
b -3,3 c 6,9 hope this helps
Answer:
2142
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
5
2 x
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10
Answer:
45 yards and 176 yards
Step-by-step explanation:
Perimeter of a rectangular playing field = 2(Length + width)
P = 2(L+W)..................... Equation 1
From the question,
Let the width of the rectangular playing field = x yards,
The the Length = 4x-4 yards.
Given: P = 442 yards.
Substitute these values into equation 1
442 = 2(4x-4+x)
442/2 = 5x-4
221 = 5x-4
5x = 221+4
5x = 225
x = 225/5
x = 45 yards.
Width = 45 yards.
Length = (45×4)-4 yards = 176 yards
Hence the dimensions of the playing field are, 45 yards and 176 yards
