Simplif the expression -3 ÷ (- 2/5)
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soln,
from the series,
a = 2
t2 = -6
r = t2/a
= -3
therefore, tn =
now,
seventh term =
Width of the reactangle = 38 cm
Minimum perimeter = 692 cm
Let the length of the rectangle be x cm
We know that,
Perimeter of rectangle = 2 * (length + width)
Since the perimeter should be atleast 692 cm. Therefore,
2 * (x + 38) > 692
2x + 76 > 692
2x > 692 - 76
2x > 616
x >
x > 308
Hence, the length of the rectangle should be more that 308 cms.