Matematika sinf. Test savollari. Iii-chorak II- variant. Tog`ri to`rtburchakning eni sm ga teng, bo`yi undan sm ga ortiq bo`lsa, uning perimetrini toping

2. Agar uchburchakning ikkita burchagi 60⁰ va 40⁰ ga teng bo`lsa, uning noma’lum burchagini toping.
A) 100⁰ B) 20⁰ C) 80⁰ D) 120⁰
3. Agar uchburchakning burchaklari 2,3,4 sonlariga proporsional bo`lsa, ularni toping.
A) 40⁰, 60⁰, 80⁰ B) 20⁰, 30⁰, 40⁰ C) 30⁰, 45⁰, 60⁰ D) 80⁰, 120⁰, 160⁰
4. Kasrlarning yig`indisini toping: . A) B) C) D)
5. Kasrlarning ayirmasini toping: . A) B) C) D) .
6. Kasrni qisqartiring: . A) B) C) D)
7. Algebraik kasrning son qiymatini toping: , bunda a=16, b= -3. A) 1,3 B) C) 1,6 D) 1,9
8. Surati p va q sonlarining ayirmasiga, maxraji esa ularning ko`paytmasiga teng bo`lgan algebraik kasrni yozing.
A) B) C) D)
9. Ko`paytuvchilarga ajrating: 16a² – 81.
A) (4a-3)(4a+3) B) (4a-9)(4a+9) C) (16a – 81)(16a +81) D) (4a – 9) ²
10. Ko`paytuvchilarga ajrating: 3a³ – 3.
A) 3 (a-1)(a² + a + 1) B) 3 (a-1)(a+1) C) 3 (a-1)(a² - a + 1) D) 3 (a-1)(a² - a - 1)
11. Tenglamaning ildizlarini toping: x² – 49 = 0. A) 7 va -7 B) 49 va – 49 C) 7 D) -7
12. Hisoblang: 29,4² – 29,3². A) 58,7 B) 5,87 C) 0, 587 D) 0,01