Uchburchakning ikki tomoni 0,7 va Agar uchinchi tomoni butun son ekanligi ma'lum bo'lsa, uni toping

Test

1. Uchburchakning ikki tomoni 0,7 va 1,9. Agar uchinchi tomoni butun son ekanligi ma'lum bo'lsa, uni toping

A) 3 B) 5 C) 2 D) 8

2. Qo’shni burchaklardan biri ikkinchisidan 16 katta. Shu qo’shni burchaklarni toping.

A) 16; 164 B) 80; 96 C) 148; 32 D) 82; 98

3.Muntazam uchburchakning perimetri kvadratning perimetriga teng bo’lsa, kvadrat yuzining uchburchak yuziga nisbatini toping.

A) B) C) D)

4. ABC uchburchakda A=60, C=45, BDAC va AD=3. BC ning qiymatini toping.

A) B) 6 C) 3D) 3 E 2

5. ABC uchburchakda 0, AB=, AC=6. A uchidan tushirilgan balandlikning uzunligini toping.

A) B) C) D) E)

6. To’g’ri burchakli uchburchakning katetlari 6 va 8 ga teng. Uning gipotenuzasiga tushirilgan balandligini toping.

A) 4,8 B) 5 C) 4,5 D) 4,7 E) 4,9

7.To’g’ri burchakli uchburchakning A to’g’ri burchagi uchidan BC tomonga AD mediana va AH balandlik tushirildi.Agar AB=8 va AC=6 bo’lsa HD kesma uzunligini toping.

A) 3,6 B) 1,8 C) 1,4 D) 2,5

8.Tortburchakning burchaklaridan biri to’g’ri burchak, qolganlari esa o’zaro 4:3:2 nisbatda. To’rtburchakning kichik burchagini toping.

A) 30^o B) 45⁰ C) 50^o D) 60^o E) 80^o

9.To’g’ri burchakli uchburchakning gepotenuzasiga tushirilgan balandligi 12 ga, medianasi esa 13 ga teng. Uchburchak kichik katetini toping.

A) 8 B) 2 C) 9 D) 4

10.Teng yonli uchburchakning uchidagi burchagi .Asosidagi burchaklarning bissektrissalari kesishishidan hosil bo’lgan o’tkir burchakni toping.

A) B) C) D)

11. bo’lsa, =?

A) 6 B) 4 C) 10 D) 8

12.Tomonlaru uzunliklari 70, 240 va 250 bo’lgan uchburchakning eng kichik medianasi uzunligini toping.

A) 125 B) C) D) 120

13.Katetlaridan biri 8 ga teng bo’lgan to’g’ri burchakli uchburchak gipotenuzasining ikkinchi katetiga nisbati 5:3 ga teng. Uchburchakning yuzini toping.

A) 20 B) 48 C) 12 D) 24 E) 15

14.Uchburchakning tomonlari 4, 5 va 6m.5m li tomonning 6m li tomondagi proyeksiyasi necha m?

A) B) C) D)

15.To’g’ri burchakli uchburchakning bir kateti 10 sm ga gipotenuzaga tushirilgan balandligi 6 sm ga teng.Uning ikkinchi katetini toping.

A) 9 B) 7 C) 6,5 D) 7,5

16.Uchburchakning tomonari 6, 7 va 8 ga teng.Katta tomoniga bissektrissa o’tkazilgan.Hosil bo’lgan kesmalarning kichigini toping.

A) B) C) 3 D) 5

17.To’g’ri burchakli uchburchakning perimetri 84 ga, gipotenuzasi 37 ga teng. Bu uchburchakning yuzini toping.

A) 210 B) 240 C) 105 D) 180

18.Uchburchakning tomonlari 2, 3 va 4 ga teng.3 ga teng tomon qarshisidagi burchak ning tangensini toping.

A) B) C)1,1 D) 2

19.tenglamaning nech ta ildizi bor?

A) 4 B) 0 C) 1 D) 2

20.tengsizlikning eng kichik natural yechimini toping.

A) 1 B) 7 C) 3 D) 0

21. Hisoblang:

A) 7 B) 49 C) D)

22. tengsizliklar sistemasi butun yechimlarining o’rta arifmetigini toping.

A) 0,75 B) 1,5 C) 2,5 D) 2 E 3

23.ABC uchburchakda ga, ga va BC=14 ga teng. AB tomonning uzunligini toping.

A) 12 B) 15 C) 14 D) 12

24. x₁ va x₂ x²+x+a=0 tenglamaning ildizlari bo’lib, 1/x₁+1/x₂=1/2 tenglikni qanoatlantiradi. a ni toping.

A) 2 B) -3 C) -2 D) -1 E 1

25. (b-c)(b²+bc+c²) ifodaning b=-2 va c=1 bo’lgandagi qiymatini hisiblang.