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Marat540 [252]
3 years ago
7

The sum of the areas of the two circles is 80 pi square meters. Find the length of a radius of each circle of one of them is twi

ce as long as the other. What is the radius of the larger circle?
Mathematics
1 answer:
nikklg [1K]3 years ago
7 0
The radius of both circles are 4m and 8m.
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On a road map, the locations A, B and C are collinear. Location C divides the road from location A to B, such that AC:CB = 1:2.
koban [17]

Answer:

C. (-1,-2)

Step-by-step explanation:

Since C internally divides AB in the ratio AC/CB = 1/2 = m/n where m = 1 and n = 2, we use the formula for internal division.

Let A = (x₁, y₁) = (5, 16), B = (x₂, y₂) and C = (x, y) = (3, 10)

So x = (mx₂ + nx₁)/(m + n)

y = (my₂ + ny₁)/(m + n)

Substituting the values of the coordinates, we have

x = (mx₂ + nx₁)/(m + n)

3 = (1 × x₂ + 2 × 5)/(2 + 1)

3 = (x₂ + 10)/3

multiplying through by 3, we have

9 = x₂ + 10

x₂ = 9 - 10

x₂ = -1

y = (my₂ + ny₁)/(m + n)

10 = (1 × y₂ + 2 × 16)/(2 + 1)

10 = (x₂ + 32)/3

multiplying through by 3, we have

30 = y₂ + 32

y₂ = 30 - 32

y₂ = -2

So, the coordinates of B are (-1, -2)

3 0
2 years ago
delia drove her car 179 miles. The car used 6.04 gallons of gasoline on the drive. Estimate the cars gasoline milage in miles pe
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29.6 mpg is the answer.
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What is the volume of a sphere with a radius of 9 inches
Effectus [21]
Given the formula 
V=\frac{4}{3}πR³
so V=\frac{4}{3}π9³=972π
7 0
3 years ago
Read 2 more answers
Circumference of the circle
Alja [10]

Answer:

37 5/7

Step-by-step explanation:

use formular it will be 2pie -22/7 ×radius

since we have been given only radius it will be

2×22/7×6=37 5/7

8 0
2 years ago
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Can you guys help me pls NO LINKS
jolli1 [7]
It's 169.6mm in total so that closer to H
170mm
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2 years ago
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