Solve the System by the Method of Elimination $\left\{ \begin{aligned}5.2 x + 8.1 y & = 6.9 \\- 2.6 x + 1.1 y & = - 0.7\end{aligned} \right.$

question 47

Multiple Choice

Solve the system by the method of elimination. Round numbers to three decimal places.
$\left\{ \begin{aligned}5.2 x + 8.1 y & = 6.9 \\- 2.6 x + 1.1 y & = - 0.7\end{aligned} \right.$

• A) \(( 2.020,1.873 )\)
• B) \(( 0.495,0.534 )\)
• C) \(( - 0.864,1.407 )\)
• D) \(( 0.192,0.728 )\)
• E) no solution

---

Definitions:

Pretend Play

Pertains to imaginative play where children create scenarios and roles, demonstrating creativity and the ability to symbolize abstract concepts.

Substage 6

The final phase of Jean Piaget's sensorimotor stage of cognitive development, where infants aged about 18-24 months start to develop symbolic thought and mental representation.

Sensorimotor Period

A stage in Jean Piaget's theory of cognitive development, where infants learn through interacting with their environment using their senses and motor actions.

Search for an Object

A cognitive milestone in child development where a child learns that objects continue to exist even when they are not seen, leading to behaviors such as looking for hidden objects.