
bilangan berpangkat
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Ferry Gustian
Used 3+ times
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25 questions
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1.
MATCH QUESTION
5 mins • 4 pts
Jodohkanlah pernyataan matematika tentang bilangan berpangkat berikut ini:
8
(–2)–3
- 1/8
34 × 3–12
3-8
642 + 163
( 22)5
2 3/5
[ (2 ) 3/8] 8/5
Answer explanation
(-2)^-4 = 1/((-2)^4) = 1/16 = -1/16. The correct answer is -1/16, not 2 4/5. Therefore, the correct choice is -1/16.
2.
MATCH QUESTION
5 mins • 4 pts
Jodohkanlah pernyataan matematika tentang bilangan berpangkat berikut ini:
5√2 - 4
√2(5− 2√2)
√2
√90
√25
√32 - √18
⅗ √10
81/9
Answer explanation
Pernyataan [(2) 4/9] 9/5 dapat disederhanakan menjadi 7√2 - 10, yang merupakan hasil dari operasi bilangan berpangkat. Pilihan lain tidak sesuai dengan hasil yang diperoleh.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bentuk sederhana dari (2r3) x 4(rt2)3 x 5t6 = .....
40r12t9
40r6t12
40r6t10
40r10t9
Answer explanation
Untuk menyederhanakan, kalikan koefisien dan jumlahkan eksponen yang sama. Hasilnya adalah 2 x 4 x 5 = 40 untuk koefisien, dan r^(3+9) = r^12 serta t^(2*3+4) = t^9. Jadi, jawabannya adalah 40r^12t^9.
4.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Diketahui panjang dan lebar sebuah persegi panjang berturut-turut adalah 8 cm dan 12 cm. Panjang diagonal persegi panjang tersebut adalah ....
4 √13 cm
10 √5 cm
5 √13 cm
4 √ 5 cm
Answer explanation
Panjang diagonal dapat dihitung dengan rumus Pythagoras: d = √(panjang² + lebar²). Jadi, d = √(8² + 12²) = √(64 + 144) = √208 = 4√13 cm. Pilihan yang benar adalah 4 √13 cm.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hasil dari P5 + 4/ P-5
5P5
3p5
2P3
4P5
Answer explanation
Untuk menyederhanakan P^5 + 3/P^-5, kita ubah 3/P^-5 menjadi 3P^5. Jadi, P^5 + 3P^5 = 4P^5. Pilihan yang benar adalah 4P^5.
6.
MULTIPLE CHOICE QUESTION
5 mins • 2 pts
Sederhanakanlah: √0,000009 x √0,04
4.10-3
5 10-4
6.10-4
8.10-4
Answer explanation
√0,000009 = 0,003 and √0,04 = 0,2. Therefore, 0,003 x 0,2 = 0,0006 = 6 x 10^-4. Thus, the correct answer is 6.10^-4.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diberikan Persamaan Kuadrat 2X2 - 3X + 5 = 0. Nilai 3a + b - 2c adalah ......
-13
7
-7
13
Answer explanation
Dari persamaan kuadrat 2X^2 + 3X + 5 = 0, kita dapat menggunakan rumus kuadrat untuk menemukan nilai a, b, dan c. Setelah menghitung, kita dapatkan 3a + b - 3c = -6. Jadi, jawaban yang benar adalah -6.
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