Matematika test 7-sinf (ixtisos) 1-variant

Ixtisoslashgan maktablar uchun
Testlar 8 sinf
2- variant


1. Ikkita ketma-ket natural sonlarning ko’paytmasi 182ga teng. Bu onlarningyig’ indisini toping.
А) 27; B) 36; c) 24; d) 42.
2. Kvadratning diagonali 6sm. Kvadratning yuzini toping.
А) 12 sm²; B) 36 sm²; c) 18 sm²; d) 24 sm².
3.To’g’ri burchakli uchburchakning gipotenuzasi bir katetidan 5 sm, ikkinchi katetidan 10 sm uzun. Gipotenuza uzunligini toping.
А) 25 sm; B) 20 sm; c) 15 sm; d) 30 sm.
4. Мotorliqayiqko’lda 10 kmvaoqimgaqarshi 4 kmyo’lbosdi. Ubutunyo’lga 1 soatsarfladi.Oqimningtezligi 3km/soatbo’lsa, qayiqningo’ztezligini toping.
А) 15 km/soatyoki 2 km/soat; B) 15 km/soat; c) 30km/soat;
d)to’g’rijavobyo’q.

5. Sonlarni taqqoslang: , ,

А) a < b < c С) c < b < a С) c < a < b D) a < c < b
6. Ildizlari 2 va bo’lgan kvadrat tenglama tuzing.
A) B)
C) D)
7. Tenglamani yeching: (3х + 4)² + 3(х – 2) = 46

A) –1; 4 B) –4; 1 C) 1; 4 D) –14; 11

8. x² + 2x – 5 = 0 tenglamaning ildizlari x₁ va x₂ bo‘lsa , nimaga teng?

A) 2,8 B) –1,2 C) –2,8 D) 1,2

9. tenglama ildizlarining ko’paytmasini toping.

A) –48 B) –16 C) –9 D) 144
10. Tengsizlikning eng katta butun yechimini toping:
A) 3 С) – 3 С) – 4 D) – 5
11. tengsizliklar sistemasi nechta butun yechimga ega?
A) 1 B) 2 C) 3 D) 4

12. Tengsizliklar sistemasini yeching:

A) (1,4;,25) B) [2,1;3,5] C)(1,5;3) D) (2,1;3,5]
13. Hisoblang:
А) 4 С) 8 С) 2 С) 2