Sources of Air Pollution and Reduction of Harmful Effects

Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals and plants. It can also damage buildings. Air pollutants can take different forms: gases, solid particles or liquid droplets. There are two main sources of air pollution: Natural or Man Made. Natural Sources Dust Storms: storms are…

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Addition and Subtraction Decimal Word Problems

Example 1 On Saturday, George’s parents gave birth to twins and names them Karene and Kalissa. When they were first born, Karene weighed 8.27 pounds and was 21.5 inches tall and Kalissa weighed 7.34 pounds. How much did the babies weigh in total? The question asks how much did the babies weigh in total. All…...

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Dividing Decimals with Hundredths

Example Divide 30.24 by 0.42 Write the problem in the proper order. Multiply or divide both numbers by the same thing.  The value of the fraction and the numbers remains the same. Now we divide as usual. Therefore: The answer is 72. Read more →...

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Classification of Triangles

Triangles are classified based on two different characteristics: Whether or not the triangle has equal sides and; The size of the angle. Classification Based on Side Length  Scalene This type of triangle has no equal sides.   Isosceles This type of triangle has 2 equal sides. Equilateral All sides of the triangle are equal. Note:…...

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