BlueLemonWater
01.12.2021 •
Mathematics
The population of the world in 1987 was 5 billion and the relative growth rate was estimated at 296
per year. Assuming that the world population follows an exponential growth model, find the
projected world population in 1995. Round your answer to 2 decimal places.
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Ответ:
B. 10
Step-by-step explanation:
To find the area of this rectangle, we will simply find the distance AB and then find the distance BC, then multiply both together.
First, we will find the distance AB
A(-3,1), B(-2, -1)
Using the distance formula;
|AB| = √(x₂ - x₁)² + (y₂ - y₁)²
x₁= -3 y₁ = 1 x₂ = -2 y₂ = -1
|AB| = √(-2 + 3)² + (-1 - 1)²
=√(1)² + (-2)²
= √1 + 4
= √5
Next, we will find the distance BC
B(-2, -1) C(2, 1)
Using the distance formula;
|BC| = √(x₂ - x₁)² + (y₂ - y₁)²
x₁= -2 y₁ =- 1 x₂ = 2 y₂ = 1
|AB| = √(2 + 2)² + (-1 - 1)²
=√(4)² + (-2)²
= √16 + 4
= √20
Area of the rectangle ABCD = |AB| . |BC|
= √5 × √20
= √5×20
=√100
=10
Area of the rectangle ABCD = 10 square units