Best described as Primary and Secondary. They work with a lot of mines since you have many gems found in their land.
Africa's economies are predominantly engaged in the primary sector, focusing on the extraction and production of raw materials, though secondary and tertiary sectors also contribute to the continent's income. The quaternary sector is less developed in Africa compared to more industrialized regions.
Most of Africa's economies are best described by their engagement in the primary sector of economic activities, which includes the extraction and production of raw materials such as metals, agriculture, mining, and fishing. Though there are variations within the continent, for the most part, African nations are heavily reliant on the primary sector, particularly in industries like agriculture and mining, to sustain their economic growth. While secondary activities (manufacturing) and tertiary activities (services) like tourism do contribute to the continent's income, manufacturing and service industries are not as dominant as the primary sector. Furthermore, the quaternary sector, which encompasses education, research, and the management of information, is not yet as prominent in Africa as it is in more developed economies.
Most of Africa's economies are primarily described as operating in the primary sector, with significant reliance on agriculture and resource extraction. There is some activity in the secondary sector, mainly in manufacturing, but overall industrialization is low. Tertiary and quaternary sectors are developing but remain underdeveloped compared to the primary sector.
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Penjelasan dengan langkah-langkah:1. a. 25% ; 0,3 : 5/4 ; 7¼= 25/100 ; 3/10 ; 5/4 ; 29/4= 25/100 ; 30/100 ; 125/100 ; 725/100Urutan bilangan dari yang terbesar ke kecil adalah 7¼ ; 5/4 ; 0,3 ; 25%b. 2¾ ; 0,45 ; 3% ; ⅔ ; ½= 11/4 ; 45/100 ; 3/100 ; ⅔ ; ½= 825/300 ; 135/300 ; 9/300 ; 200/300 ; 150/300Urutan bilangan dari yang terbesar ke kecil adalah 2¾ ; ⅔ ; ½ ; 0,45 ; 3%2. a. 24 - 16 ÷ 4 + (-3) × 5= 24 - 4 + (-15)= 20 + (-15)= 5b. [tex] \frac{5}{6} + \frac{3}{4} \times \frac{5}{6} \div \frac{4}{6} \\ = \frac{5}{6} + \frac{15}{24} \div \frac{4}{6} \\ = \frac{5}{6} + \frac{15}{24} \times \frac{6}{4} \\ = \frac{5}{6} + \frac{90}{96} \\ = \frac{80}{96} + \frac{90}{96} \\ = \frac{170}{96} \\ = 1 \frac{74}{96} \\ = 1 \frac{37}{48} [/tex]