Ratios and rates are mathematical tools used to compare quantities. Ratios are expressed as the quotient of two quantities, and rates compare different kinds of quantities, such as miles per gallon.
Two triangles are congruent when they have the same shape and the same size.
Square Root and The Pythagorean Theorem(6.4)
The square root of a positive number (a) is the positive number (b) whose square is (a). if b2 = a
example: a square root of 25 is 5 because 5.5 = 25
Proportions and Problem Solving(6.3)
Writing proportions is a powerful tool for solving problems in almost every field, including business,chemistry, biology, health sciences, and engineering, as well as in daily life.
example: 5miles over 2 inches = x miles over 7inches cross multiply and 5.7=2.x , 35 =2x, divided both by 2, and x = 17.5
Proportions (6.2)
A proportion is a statement that two ratios or rates are equal.
example(2/24=1/12)
Ratios and Rates (6.1)
Rates are used to compare different kinds of quantities.
