dontcareanyonemo
28.06.2019 •
Mathematics
The width of a rectangle is fixed at 2yd. for what lengths will the area be at least 4 yd ^2? my second question is: a rectangle has a perimeter of 8ft. the length is 5ft less than two times the width. fond the length and width.
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Ответ:
Length of rectangle ≥ 2 yd.
Step-by-step explanation:
Suppose the length of rectangle = X yd.
Given the width of rectangle = 2 yd.
Area ≥ 4 yd²
Length * width ≥ 4 yd²
2X ≥ 4 yd²
X ≥ 2 yd
So, length of rectangle must be at least 2 yd.
length = 1 feet and width = 3 feet.
Step-by-step explanation:
Suppose the width of rectangle = X feet.
then length of rectangle = (2X - 5) feet.
Given the perimeter of rectangle = 8 feet.
The formula is Perimeter = 2 * (length + width)
8 = 2 * (2X - 5 + X)
8 = 2 * (3X - 5)
8 = 6X - 10
6X = 8 + 10 = 18
X = 18/6 = 3.
so 2X - 5 = 2(3) - 5 = 6 - 5 = 1.
Hence, length = 1 feet and width = 3 feet.
Ответ:
-i
Step-by-step explanation:
Given are two complex numbers as
To find quotient
We can use Demoivre theorem for products and quotients here
Quotient would be equal to
Hence quotient = -i