Matematika 7-sinf Ifodaning qiymatini toping, agar Х =

Matematika 7-sinf

1. 
   Ifodaning qiymatini toping , agar х =
   

2. 
   kasrning qiymatini toping, agar m =
   

3. 
   0,83у + 0,56у – 0,92у – 0,83у Ifodani soddalashtiring va uning qiymatini toping
   

agar у = - 4,5 bo’lsa.
A. 16,2 B.162 V. 1,62 G. 0,162.

4. 
   Qovuslarni oching va soddalashtiring
   

5. 
   Tenglamani yeching -5,4 – (х – 7,2) = 1,9.
   

A. –0,1 B. 0,1 V. 1 G. -1

6. 
   Amallarni bajaring :
   

A. 25 B. 5 V. 125 G. 1.
7. Birhadni standart ko’rinishga keltiring. (0,6у²х)(-1,3х²у).
A. –7,8х³у³ B.7,8х³у³ V.6,8х³у³ G. –6,8х³у³.
8. Ko’phadni standart ko’rinishga keltiring
2ab + 0,3a² – 4ab + 0,7a² + 3ab.
A. a² + ab B. 0,1a² + ab V. a² – ab D. 0,1a² - ab.
9. Ko’phadlar bilan amallarni bajaring (4a – 5a²b + 6b²) – (7b² + 4a² b - a).
A. –9а²b – b² + 5a B. –9а²b – b² + 5a V. –9а²b – b² + 5a G. –9а²b – b² + 5a.
10. Qovuslarni oching va amallarni bajaring: 2х(х + 4) – х(х - 5).
A. х² + 13х B. 3х² – 13х V. х² – 13х G. 3х² + 13х.

11. 
    Bo’lishlarni bajaring: (3х²у³ – 2х³у² + 4х³у³) : (х²у²).
    

A. 3у – 2х + 4ху B. 3у – 2х - 4ху V. -3у – 2х + 4ху G. 3у + 2х + 4ху.

11. 
    Gruppalsh usuli bilan ko’paytuvchilarga ajratish:
    

ах – ау + 5х – 5у.
A. (х + у)(а + 5) B. (х - у)(а + 5) V. (х - у)(а - 5) G. (х + у)(а - 5).

11. 
    Ko’paytuvchilarga ajratish: -5а² – 10аb – 5b².
    

A. 5(а - b)² B. (а – 5b)² V. –5(a - b)² G.(a + 5b)².

11. 
    Ko’paytuvchilarga ajratish: 16х⁴ – 81.
    

A. (4х² + 3)(4х² - 3) B. (2х² + 3)(2х² - 3) V. (4х +9)(4х - 9);
G. (4х² + 9)(4х² -9).

11. 
    Tenglamani yeching 5(х + 1,2) = 34х + 0,2.
    

A. х = -0,2 B. х = 0,2 V. х = 0,3 G. х = - 0,3.
16. Kasrni qisqartiring

17 Amallarni bajaring :

18. Amallarni bajaring :
A. 0 B. 2 V. 1 G. 4.

19. 
    Qo’shni burchaklardan biri ikkinchisidan 30⁰ ga katta. Bu burchaklarni toping..
    

A. 75⁰; 105⁰ B. 65⁰; 115⁰ V. 85⁰; 95⁰ G. 55⁰; 125⁰.
20. Ikki to’g’ri chiziqning kesishidan hosil bo’lgan burchak 45⁰ ga teng.Hosil bo’lgan burchaklarni toping.
A. 55⁰; 125⁰; 125⁰ B. 45⁰; 135⁰; 135⁰ V. 65⁰; 115⁰; 115⁰ G. 75⁰; 105⁰; 105⁰.
21 Teng yonli uchburchakning perimetri 3,5 м , asosi 1,3 м.Yon tomonlarini toping.
A. 1,2 B. 1,1 V. 1 G. 11.
22. Uchburchakning burchaklarining nisbati 7:5:3 ga teng. Uchburchakning burchaklarini toping.
A. 84⁰; 50⁰; 46⁰ B. 94⁰; 50⁰; 36⁰ V. 84⁰; 60⁰; 36⁰ G. 84⁰; 64⁰; 32⁰.

23. 
    АВС teng yonli uchburchakda (АВ = ВС) tashqi burchak ВСК 150⁰ ga teng. АВС burchakni toping..
    

A. 130⁰ B. 110⁰ V. 100⁰ G. 120⁰.

23. 
    Ikki to’g’ri chiziqni uchinchi to’g’ri chiziq bilan kesganda hosil bo’lgan ichki bir tomonli burchaklar nisbati 2:3 ga teng. Bu burchaklarni toping.
    

A. 72⁰ и 108⁰ B. 62⁰ и 118⁰ V. 82⁰ и 98⁰ D. 92⁰ и 88⁰.

23. 
    АВС va DЕF uchburchaklar teng. АВС uchburchakning burchaklari А = 35⁰; В = 50⁰; С = 95⁰.Uchburchakning DЕF burchagini toping..
    

A. D= 90⁰; Е = 55⁰; F = 35⁰ B. D = 35⁰; Е = 50⁰; F = 95⁰
V. D= 50⁰; Е = 35⁰; F = 95⁰ D. D= 95⁰; Е = 35⁰; F = 50⁰