Solve the System of Equations Using the Addition Method: 5x $x = 4 \frac { 1 } { 2 } \cdot u = 1$

question 59

Multiple Choice

Solve the system of equations using the addition method: 5x + 2y = 11
X - 2y = -5

• A) \(x = 4 \frac { 1 } { 2 } \cdot u = 1\)
• B) \(x = 1 . y = 3\)
• C) \(x = \frac { 3 } { 2 } , u = \frac { 7 } { 4 }\)
• D) \(x = - 1 . y = 8\)

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Definitions:

Object Permanence

The understanding that objects continue to exist even when they cannot be observed, seen, or heard, a concept important in cognitive development.

Egocentrism

A cognitive trait where an individual cannot fully understand or assume perspectives other than their own.

Concrete Operational

A stage in Piaget's theory of cognitive development, typically occurring between ages 7 and 11, when children gain a better understanding of concrete and logical operations.

Formal Operational

A stage in Piaget's theory of cognitive development where individuals are able to think abstractly and logically.