. Mary sees 10 ravens and 5 blackbirds in a tree. Which of the following best compares the number of ravens and blackbirds in the tree?
A. The ratio of ravens to blackbirds in the tree is 3:2 because, of every 3 birds in the tree, 2 are not blackbird
B. The ratio of ravens to blackbirds in the tree is 1:2 because, for every raven in the tree, there are 2 blackbirds in the tree.
C. The ratio of ravens to blackbirds in the tree is 2:3 because 2 of every 3 birds in the tree are ravens.
D. The ratio of ravens to blackbirds in the tree is 2:1 because there are twice as many ravens as blackbirds in the tree.

the radius is 2 times the diameter.

step-by-step explanation:

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step-by-step explanation:

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18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²