Answer:
1 is 21 cm
2 is 23 ft
3 is 19.3 in
4 is 38.6 m
5 is 37.1 yd
6 is 21.6 km
Step-by-step explanation:
just add all thim together 1 by 1
the third answer. x represents half of any even number. so half of any even number minus seven equals 1.5 is the answer.
In order to find "r", you need to isolate it. So in order to isolate it, you do the inverse operation. In this case, it would be division because 0.3 is being multiplied by "r". So you divide by 0.3 on both sides to get 7.
Given that the <em>length</em> ratio between the radii of the two circles is (2 · x) / (5 · y). The ratio of the areas of the two circles is (4 · x²) / (25 · y²).
<h3>What is the area ratio of two circles?</h3>
According to the statement we know that the radius ratio between two circles. Given that the area of the circle is directly proportional to the square of its radius, then the <em>area</em> ratio is shown below:
A ∝ r²
A = k · r²
A' · r² = A · r'²
A' / A = r'² / r²
A' / A = (r' / r)²
A' / A = [(2 · x) / (5 · y)]²
A' / A = (4 · x²) / (25 · y²)
Given that the <em>length</em> ratio between the radii of the two circles is (2 · x) / (5 · y). The ratio of the areas of the two circles is (4 · x²) / (25 · y²).
To learn more on ratios: brainly.com/question/13419413
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Answer:
Perimeter of the rectangle is 16x+18 units.
Step-by-step explanation:
The area of rectangle is
First we have to find the factor form of above expression.
Splitting the middle term, we get
Area of a rectangle is the product of its dimensions. It means dimensions of the rectangle are (x+8) and (7x+1).
Perimeter of a rectangle is
![Perimeter=2[(x+8)+(7x+1)]](https://tex.z-dn.net/?f=Perimeter%3D2%5B%28x%2B8%29%2B%287x%2B1%29%5D)
![Perimeter=2[8x+9]](https://tex.z-dn.net/?f=Perimeter%3D2%5B8x%2B9%5D)
Therefore, the perimeter of the rectangle is 16x+18 units.
