Use a Matrix Approach to Solve the System A) $-$

question 186

Multiple Choice

Use a matrix approach to solve the system. $$\left( \begin{array} { c c c c } x _ { 1 } &+& 6 x _ { 2 } &-& x _ { 3 } &+& 5 x _ { 4 } &= &- 4 \\5 x _ { 1 } &+& 3 x _ { 2 } &+& 5 x _ { 3 } &-& x _ { 4 } &= &- 9 \\- 6 x _ { 1 } &-& 4 x _ { 2 } &+& 6 x _ { 3 } &+& x _ { 4 } &= &23 \\ 7 x _ { 1 } &+& 9 x _ { 2 } &-& 5 x _ { 3 } &-& 6 x _ { 4 } &= &- 34 \\\end{array} \right)$$

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Definitions:

Ghana

A West African country that was the first to gain independence from colonial rule in 1957, leading the way for decolonization in the continent.

Ethiopia

A country in the Horn of Africa, known for its rich history, being one of the oldest locations of human existence, and never being colonized, although it faced Italian occupation temporarily.

Liberia

A country in West Africa, established by the American Colonization Society as a colony for freed African American slaves in the early 19th century, becoming Africa's first republic.

Hip Hop Artists

Individuals or groups who create music within the hip hop genre, a cultural movement characterized by rap music, DJing, breakdancing, and graffiti art.