tolong bantu jawab kk dan di kasi caranya plis.
Jawaban:
11. B
12. D
13. C
14.
15. C
Penjelasan dengan langkah-langkah:
11.
[tex] \frac{3}{4} x + 1 < 6 \\ \frac{3}{4} x < 6 - 1 \\ \frac{3}{4} x5 \\ x < 5 \div \frac{3}{4} \\ x < 5 \times \frac{4}{3} \\ x < \frac{20}{3} [/tex]
12.
[tex]5x > 30000[/tex]
13.
[tex]p = l + 5 \\ k = 110cm \\ k = 2(p + l) \\ \\ 110 = 2(l + 5 + l) \\ 110 = 2l + 10 + 2l \\ 110 = 4l + 10 \\ 110 - 10 = 4l \\ 100 = 4l \\ l = 100 \div 4 \\ l = 25 \\ \\ p = 25 + 5 = 30 \\ \\ luas = 25 \times 30 = 750{cm}^{2} [/tex]
15.
[tex]x + 1 > \frac{1}{2} x + 3 \\ x - \frac{1}{2} x > 3 - 1 \\ \frac{1}{2} x > 2 \\ x > 2 \div \frac{1}{2} \\ x > 2 \times \frac{2}{1} \\ x > 4[/tex]
C
[tex]2x + 2 > x + 6 \\ 2x - x > 6 - 2 \\ x > 4[/tex]
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