Test-2019 1-Variant
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2019 yil 30 ta lik variant
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- GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI
- 23 – Variant.
- 24 – Variant.
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22 – Variant. 1. Merganning bitta otgan o’qining nishonga tegishi ehtimoli 0,8 ga teng bo’lsa, otilgan ikkita o’qning ikkitasi ham nishonga tegmasligi ehtimolini toping. A) 0,8 B) 0,36 C) 0,04 D) 0,64
2. Agar 0 < 𝛼 < 𝛽 < 𝜋 2 uchun 𝑡𝑔𝛼 = 3 𝑣𝑎 𝑐𝑜𝑠𝛽 = 1 3 bo’lsa, 2𝑠𝑖𝑛2𝛼 + 𝑐𝑜𝑠2𝛽 ni hisoblang. A) 0,42 B) 0,4(2) C) 0,38 D) 0,3(8)
3. 𝑦 = 3𝑥 2 − 6𝑥 + 7
kvadrat funksiyaning ordinata o’qiga nisbatan simmetrik funksiyasini aniqlang. A) 𝑦 = −3𝑥 2 + 6𝑥 − 7
B) 𝑦 = 3𝑥 2 + 6𝑥 + 7
C) 𝑦 = 3𝑥 2 − 6𝑥 + 7
D) 𝑦 = −3𝑥 2 − 6𝑥 − 7
4. 29 ta o’quvchidan 3x-1 tasi ingliz tilini, 2x+1 tasi rus tilini, x-1 tasi ikkala tilni ham ( har bitta o’quvchi hech bo’lmaganda bitta tilni biladi) biladi.O‘quvchilarning nechtasi ingliz tilini biladi? A) 20 B) 9 C) 19 D) 10
5. Hisoblang: arcctg (ctg 6𝜋 7 ) A)
𝜋 7 B) 3𝜋 7 C) 5𝜋 7 D) 6𝜋 7
6. 16𝑠𝑖𝑛 2 70° ∙ 𝑠𝑖𝑛 2 50° ∙ 𝑠𝑖𝑛 2 10°
ni hisoblang. A) 1 B) 2 C) 0,5 D) 0,25
7. ∫ (𝑥 2 + 𝑥 + 1)
2 ∙ (2𝑥 + 1)𝑑𝑥 1 0
integralni hisoblang. A) 2,(3) B) 2,(6) C) 3 D) 1
8. Koordinata o’qlarining (2;0) va (0;3) nuqtalardan o’tadigan chiziqli funksiyani toping. A) 𝑦 = 1,5𝑥 + 3 B) 𝑦 = −1,5𝑥 − 3 C) 𝑦 = −1,5𝑥 + 3 D) 𝑦 = 1,5𝑥 − 3
9. 𝑦 = 𝑥
2 − 5𝑥 + 3
kvadrat funksiyaning ordinatalar o’qiga nisbatan simmetrik funksiyani aniqlang. A) 𝑦 = 𝑥
2 − 5𝑥 + 3
B) 𝑦 = 𝑥
2 + 5𝑥 + 3
C) 𝑦 = −𝑥 2 + 5𝑥 − 3
D) 𝑦 = −𝑥 2 − 5𝑥 − 3
GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 10. Tenglamani yeching: (𝑥 + 2) ∙ (|𝑥| − 2) = 5
A) 3 B) -3 C) -3; 3 D) ∅ 11. 2 ∙ 7 ∙ 11 ∙ 19 ∙ 23 sonni qaysi natural songa ko’paytirganda bu sonning natural bo’luvchilari soni ikki marta ortadi? A) 3 B) 7 C) 9 D) 11
12. 𝑦 = arcsin ( 𝑥−3 2 ) − lg(4 − 𝑥) funksiyaning aniqlanish sohasini toping. A) [1;5] B) (4;5] C) [1;4) D) [3;4)
13. 𝑥 2 (𝑎 2 + 𝑏 2 + 9) + 2(𝑎 + 𝑏 + 3)𝑥 + 3 = 0 kvadrat tenglama haqiqiy yechimlarga ega bo’lsa, 𝑎 + 𝑏 ni toping. A) -6 B) − 2 3
1 3 D) 0 14. ((𝑥 − 5)! + (5 − 𝑥)!) ∙ (𝑥 + 2)! ni hisoblang. A) 10040 B) 12040 C) 11040 D) 10080
15. Temirning 72 foizi kesib olindi. Qolgan qismining og’irligi 56,7 kg bo’lsa, kesib olingan qismining og’irligi necha kg? A) 145,8 B) 124,8 C) 121,7 D) 126,9
16. √10 + √24 + √40 + √60 = √𝑝 + √𝑞 + √𝑟
bo’lsa, 𝑝 + 𝑞 + 𝑟 ni toping. A) 8 B) 9 C) 12 D) 10
17. Tengsizlikni yeching: 𝑎𝑟𝑐𝑐𝑜𝑠 2 𝑥 − 𝑎𝑟𝑐𝑠𝑖𝑛 2 𝑥 > 0
A) (−
√2 2 ; 1) B) (−1; √2 2 )
C) (− √2 2 ; √2 2 ) D) (-1;1)
18. ∫ (𝑥
2 + 𝑥 − 2)
2 ∙ (2𝑥 + 1)𝑑𝑥 1 0
integralni hisoblang. A) −
8 3 B) 8 3
C) − 16 3 D) 16 3
19. 𝑎 + 𝑏 3 = 8 bo’lsa, 𝑎𝑏 ning eng katta qiymatini toping. A) 36 B) 48 C) 24 D) 72
20. “FIZIKA” so’zining harflari o’rnini almashtirib nechta olti harfli so’z tuzish mumkin( so’z deb harflar ketma-ketligi tushinilsin)? A) 720 B) 360 C) 180 D) 1080
GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 21. ABCD parallelogrammning AD tomonidan E nuqta, BC tomonidan F nuqta shunday tanlanganki, AE=3ED va BF=FC tenglik o’rinli. Parallelogrammning yuzasi 40 𝑐𝑚 2
aniqlang. A) 10 B) 12 C) 15 D) 18
22. ABCD kvadrat . E nuqta BC tomonda yotadi. AE=13 va EC=7 bo’lsa, kvadratning yuzini toping. A) 100 B) 108 C) 128 D) 144
23. (2;0) va (0;8) nuqtalarning o’rtasining koordinatalrini toping. A) (2;8) B) (8;2) C) (1;4) D) (4;1) 24. 𝑥
2 + 𝑦
2 + 𝑧
2 ≤ 4𝑥 + 6𝑦 + 8𝑧 tengsizlk bilan chegarlangan jismning sirtini toping. A) 108𝜋 B) 120𝜋 C) 116𝜋 D) 110𝜋
25. 𝛼 tekislik va uni kesib o’tadigan AB kesma berilgan. Kesmaning uchlaridan 𝛼 tekislikkacha bo’lgan masofalar 𝐴𝐴 1 = 19𝑐𝑚; 𝐵𝐵 1 = 9 𝑐𝑚 bo’lsa, AB kesmaning B uchidan boshlab hisoblaganda 3:4 kabi nisbatda bo’luvchi C nuqtadan 𝛼 tekislikkacha bo’lgan masofani toping. A) 6 B) 7,2 C) 7 D) 6,8
26. Muntazam tetraedrning qirrasi 4 ga teng bo’lsa, uning asosiga ichki chizilgan aylana markazidan yon qirrasigacha masofani toping. A)
4√2 3 B) 4√3 3
C) 2√6
9 D) 2√3 9
27. To’g’ri burchakli uchburchakning katetlari 12 va 16 ga teng bo’lsa, unga ichki chizilgan aylana radiusini toping. A) 4 B) √20 C) 3 D) √18
28. 𝑎⃗ + 𝑏⃗⃗ 𝑣𝑎 𝑎⃗ − 𝑏⃗⃗ vektorlar perpendekulyar va |𝑎⃗| = 5 bo’lsa, |𝑏⃗⃗| ni toping.
A) 5 B) 15 C) 20 D) 25
29. A(3;- 5) nuqtaning (0;0) nuqtaga nisbatan simmetrik nuqtasini toping. A) (-3;5) B) (3;-5) C) (-3;-5) D) (3;5)
30. Teng yonli trapetsiyaga ichki aylana chizilgan. Asoslari nisbati 4:9 kabi. Agar aylana radiusi 12 ga teng bo’lsa, trapetsiyaning katta asosi uzunligi toping. A) 27 B) 24 C) 36 D) 18
1. 𝑓(𝑥) = 62 7𝑥 2 + 14𝑥 2 31 funksiyaning eng kichik qiymatini toping. A) 1 B) 2 C) 3 D) 4 GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 2. cos
8𝜋 7 ∙ cos 5𝜋 7 ∙ cos 4𝜋 7 ni hisoblang. A) 0,5 B) -0,25 C) -0,125 D) 0,75
3. 𝐴 = {𝑥 ∈ 𝑁|4𝑥 + 2} va 𝐵 = {𝑥 ∈ 𝑁|6𝑥 + 2} to’plamlar bo’lsa, 𝐴 ∩ 𝐵 ni toping. A) {𝑥 ∈ 𝑁|2𝑥 + 1} B) {𝑥 ∈ 𝑁|3𝑥 + 1} C) {𝑥 ∈ 𝑁|12𝑥 + 2} D) {𝑥 ∈ 𝑁|24𝑥 + 4}
4. 𝑓(𝑥) = ln √𝑥 2 + 2𝑥 + 5 + 3𝑥
funksiyaning 𝑥 0 = 0
nuqtadagi hosilasini toping.
A) 3,2 B) 3,6 C) 3,8 D) 3
5. 𝑦 = −𝑥 2 + 6𝑥 − 5
funksiyaning qiymatlar sohasini toping. A) [4; ∞) B) (−∞; 4] C) (−∞; −4] D) [−4; ∞)
6. 𝑚; 𝑛; 𝑘 ∈ 𝑁 sonlar uchun 𝑚𝑛 = 25; 𝑘𝑚 = 4 bo’lsa, 𝑛 + 3𝑚 + 2𝑘 ni toping. A) 32 B) 38 C) 36 D) 30
7. √12 − 9𝑥 − 2𝑥 2 ≥ 4
tengsizlik nechta butun yechimga ega? A) 1 B) 2 C) 3 D) 4
8. 𝑦 = √144 − 𝑥 2 funksiya grafigiga o’tkazilgan urinma (15;0) nuqtadan o’tadi. Shu urinmaning tenglamasini tuzing. A) 4𝑥 + 3𝑦 − 60 = 0 B) 4𝑥 − 3𝑦 − 60 = 0 C) 4𝑥 + 3𝑦 + 60 = 0 D) 4𝑥 + 3𝑦 − 60 = 0
9. Hisoblang: 4 ∙ (2 𝑙𝑜𝑔
√2 3 3 + 6 2𝑙𝑜𝑔
216 8 + 19) : 7 𝑙𝑜𝑔 49 625 A) 16 B) 20 C) 12 D) 8
10. To’qqiz nafar ishchidan to’rt kishilik brigadani necha xil usul bilan tuzish mumkin?
A) 90 B) 108 C) 132 D) 126
11. Tenglamaning [0; 2𝜋] oraliqda nechta yechimi bor? 1 2 cos 𝑥 − √3 2𝑠𝑖𝑛𝑥 = 1
A) 1 B) 2 C) 3 D) 4 12. 20 kg li qotishma mis, rux va qo’rg’oshindan iborat. Rux qotishmaning 30 foizini tashkil qiladi. Rux va qo’rg’oshin 5:2 kabi nisbatda qo’shilgan bo’lsa, ruxning og’irligi misnikidan qanchaga kam? A) 5,6 B) 1,5 C) 2,7 D) 4 GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 13. Ifodaning qiymatini toping. (−20): [−4 − (−2) ∙ ( 1 3 ) −1 ] A) -24 B) -20 C) -10 D) 10
14. Ifodani soddalashtiring: (𝑥 − 4) ∙ (𝑥 + 3) − (𝑥 + 1) ∙ (𝑥 + 2)
A) 2𝑥 + 10 B) −2𝑥 + 5 C) −4𝑥 − 14 D) −2𝑥 − 10
15. 𝑥 = 6! + 7! va 𝑦 = 7! + 8! bo’lsa, EKUB(x;y) ning qiymatini toping. A) 7! B) 5 ∙ 7! C) 6! D) 8!
16. Agar 𝑓(𝑥), 𝑔(𝑥) va ℎ(𝑥) funksiyalar uchun ℎ −1 (ℎ(𝑥) + 𝑔(𝑥)) = ℎ(𝑥) ∙ 𝑔(𝑥), ℎ(4) = 3 𝑣𝑎 𝑔(4) = 2 shart bajarilsa, 𝑓(6) ning qiymatini toping. A) 4 B) 5 C) 6 D) 7
17. Agar 𝑓 ( 3𝑥+3 𝑥−2
) = 2𝑥−4
𝑥+1 bo’lsa, 𝑓 (1 − 1 𝑥
ning qiymatini toping. A) 𝑥−1
6 B)
6𝑥−6 𝑥 C) 𝑥−1 𝑥 D) 6𝑥 𝑥−1
18. A={0,2,4,5,6,7} to`plam elementlaridan foydalanib turli raqamli uch xonali beshga bo`linadigan nechta natural sonlar yozish mumkin? A) 36 B) 32 C) 48 D) 42 19. (𝑥 2
6 ifoda nechta haddan iborat? A) 13 B) 12 C) 8 D) 18
20.
(𝑥 2 + 𝑥 + 1) 5 = 𝑎
0 + 𝑎
1 𝑥 + 𝑎
2 𝑥 2 + ⋯ + 𝑎 10 𝑥 10
yoyilmadan 𝑎 0 + 𝑎 2 + 𝑎
4 + 𝑎
6 + 𝑎
8 + 𝑎
10
ni toping. A) 100 B) 110 C) 120 D) 122
21. Uzunligi √189 ga teng bo’lgan AB kesma uchlari silindrning pastki va ustki asoslarida yotadi. Agar silindrning radiuslari uzunligi 9 ga, balandligi 11 ga teng bo’lsa, silindr o’qidan AB kesmagacha bo’lgan masofani toping. A) 1 B) 8 C) 2 D) 7
22. Piramida asosi diogonallari soni bilan yoqlari soni yig’indisi 37 ga teng bo’lsa, piramidaning qirralari sonini toping. A) 8 B) 9 C) 18 D) 16
23. ABC uchburchakning A uchidan chiqqan bisektrissa BC tomonni D nuqtada kesib o’tadi. Agar ∠𝐴𝐷𝐶 = 118° bo’lsa, ∠𝐵 − ∠𝐶 ning qiymatini toping. A) 62° B) 59° C) 118° D) 56°
24. ABCD kvadrat. AD tomondan E nuqta, BC tomondan F nuqta tanlangan. AE=9, BE= 15 va FC=5 ga teng bo’lsa, EBFD to’rtburchakning yuzasini aniqlang. A) 30 B) 45 C) 54 D) 60
GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 25. ABC uchburchakning BD medianasidan shunday E va F nuqtalar olinganki, bu nuqtalar BD medianani teng uch qismga ajratadi (E nuqta B uchiga yaqin). Agar ABC uchburchak yuzi 24 ga teng bo’lsa, BEC uchburchak yuzini toping. A) 4 B) 3 C) 9 D) 8
26. A(k; -4) va B( k-3; 6) bo’lsa, 𝐴𝐵 ⃗⃗⃗⃗⃗⃗ vektorni aniqlang. A) (-3;-10) B) (3;10) C) (4;2) D) (-3;10)
27. Aylanada AB diametr va BC vatar va BC yoy 160° ga teng bo’lsa, ∠𝐴𝐵𝐶 ni toping.
A) 5° B) 10° C) 15° D) 20°
28. A( -2;-3;-4) nuqta qaysi oktantaga tegishli? A) 3 B) 5 C) 7 D) 6
29. Aylanaga ABCD to’rtburchak ichki chizilgan. Agar ∠𝐴 = 109°, ∠𝐵 = 98° bo’lsa, ∠𝐷 − ∠𝐶 ning qiymatini toping. A) 9 ° B) 10 ° C) 11° D) 12°
30. Silindrning to’la sirti 72𝜋 ga teng bo’lsa, silindr hajmining eng katta qiymatini toping. A) 24√3𝜋 B) 48√3𝜋 C) 64√3𝜋 D) 72√3𝜋
1. (
𝑥 3 +2𝑥 𝑥 4 ) 10 ifoda yoyilmasining hadlaridan biri 1024 ∙ 𝑥 −𝑛 bo’lsa, n nitoping. A) 18 B) 28 C) 30 D) 20
2. Hisoblang: 7!+8!
(4!) 2 −(3!) 2
A) 72 B) 84 C) 88 D) 92 3. Tenglamani yeching:
1
+ 3 √4𝑥 − 6 √9𝑥 = 1
A) 1 9 B) 1 6 C) 1 4 D) 1 4. n biror haqiqiy son bo’lsa, 𝑥 2
2 + 𝑛 − 6 = 0
ikkinchi darajali tenglamaning ildizlari to’plami quyidagilardan qaysi biriga teng?
A) {1; n-2} B) {1; n+3} C) {1+n;n+2} D) {n-2; n+3}
5. 𝑥
2 − 𝑥 − 4 = 0 tenglamaning ildizlari
3) ∙ (𝑚 + 2) ∙ (𝑛 + 1) ∙ 𝑚
ning qiymatini toping. A) – 16 B) – 8 C) 0 D) 8
GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 6. Agar 𝑃(𝑥 2 + 𝑥 + 7) = 14 − 3𝑥 2 − 3𝑥
bo’lsa, 𝑃(𝑥) ko’phad quyidagilardan qaysi biriga teng? A) −3𝑥 + 35 B) −3𝑥 + 15 C) −3𝑥 + 20 D) −3𝑥 + 30
7. Soddalashtiring: (𝑥−1)∙(𝑥 3 +𝑥 2 +𝑥)+𝑥
𝑥 2
A) 𝑥 4 B) 𝑥 3
C) 𝑥 2 D) x 8.
10 23 + 11 24 + 12 25 = 𝑚 bo’lsa, 82 23 − 59 24 + 38 25 ifodani m orqali ifodalang. A) m – 4 B) 2m – 1 C) m+6 D) 4 – m
9. 𝐴 = 18 2 + 24
2 + 30
2 bo’lsa, A sonining tub bo’luvchilari yig’indisini toping.
A) 6 B) 10 C) 18 D) 25 10. EKUB i 4 ga va EKUK i 72 ga teng bo’lgan ikki musbat butun sonlar yig’indisining eng kichik qiymatini toping. A) 36 B) 40 C) 56 D) 44
11. Soddalashtiring: 𝑥 3 − 8𝑦 3 (𝑥 − 2𝑦)
2 + 6𝑥𝑦
: 𝑥 2 − 4𝑦 2 𝑥 2 + 2𝑥𝑦 − 2𝑥 − 4𝑦
A) x – 2 B) 𝑥 − 2𝑦 C) 𝑦 − 2𝑥 D) x+y 12. 𝑥, 𝑦, 𝑧 ∈ 𝑍 bo’lsa, 𝐴 = 7𝑥 − 4 = 8𝑦 + 4 = 9𝑧 + 5 ga ko’ra A sonning olishi mumkin bo’lgan uch xonali butun sonni toping. A) 500 B) 504 C) 618 D) 770
13. Agar 𝑓(𝑥) = (𝑥 + 1) 2 ∙ (𝑥 − 4) 3 bo’lsa, 𝑓 ′ (𝑥) = 0 tenglamaning ildizlari yig’indisini toping. A) 3 B) 4 C) – 1 D) 0
14. (𝑎 + 2𝑏 + 3𝑐) 5 yoyilmaning 𝑎 2 𝑏
𝑐
birhadi oldidagi koeffitsiyentini toping. A) 360 B) 120 C) 80 D) 240
15. Hisoblang: √244 ∙ 324 − 243 ∙ 325 A) 16 B) 12 C) 10 D) 9
16. 𝑥 𝑣𝑎 𝑦 butun sonlar bo’lib, 7 𝑥+𝑦−3
= 11 𝑥−𝑦+7
bo’lsa, 𝑥 2 − 𝑦 2 ning
qiymatini toping. A) – 21 B) – 15 C) 1 D) 25 17. Agar 𝑓(𝑥) = 𝑎𝑟𝑐𝑡𝑔(sin 𝑥) bo’lsa, 𝑓′(𝑥) ni toping. A) 1
B) cos 𝑥
1+𝑠𝑖𝑛 2 𝑥 C)
cos 𝑥 1−𝑠𝑖𝑛
2 𝑥 D) − 1 cos 𝑥
18. Soddalashtiring: (cos 𝑥−sin 𝑥) 2 −1 sin 𝑥 : cos 𝑥
A) – 1 B) 1 C) – 2 D) 2
GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly 19. Hisoblang: arcsin (𝑡𝑔 (arccos 2 √5 ))
A) 𝜋 3 B) 𝜋 2
C) 𝜋 6 D) 𝜋 4
20. Hisoblang: 8 𝑙𝑜𝑔 √2 42 + 4 𝑙𝑜𝑔
3 42 + 12 𝑙𝑜𝑔
√7 3 42 A) 2 B) 4 C) 5 D) 3
21. 𝑎⃗(1; 2), 𝑏⃗⃗(2; 1), 𝑐⃗(𝑥 + 1; 𝑦 + 1) vektorlar uchun 2𝑎⃗ − 3𝑏⃗⃗ = 𝑐⃗ o’rinli bo’lsa, 𝑥 va 𝑦 ni toping. A) – 5; 3 B) – 5; 0 C) 3; - 3 D) 2; -5
22. Koordinata sistemasida A(2;3), B(-3;4), C(5;-4), D(6;5) nuqtalar berilgan. Koordinata boshidan qaysi nuqtagacha bo’lgan masofa eng kichik? A) A B) B C) C D) D
23. Ikkita qo’shni burchaklar ayirmasi 16° ga teng bo’lsa, burchaklardan kichikini toping.
A) 81° B) 71° C) 72° D) 74° 24. Uchlari A(1;0). B(0;3) va C(0;0) nuqtalarda bo’lgan uchburchakning CM medianasi o’tkazilgan bo’lsa, M nuqtaning koordinatasini toping. A) ( 3√2
4 ; 3√2 4 ) B) ( 4 3√2
; 4 3√2 )
C) ( 3 4 ; 3 4 ) D) ( 4 3 ; 4 3 )
25. To’g’ri burchakli uchburchak katetlari 6 va 8 ga teng. Uchburchakka ichki va tashqi chizilgan aylanalar orasidagi yuzani toping. A) 15𝜋 B) 16𝜋 C) 21𝜋 D) 12𝜋
26. ABCDEF muntazam oltiburchak berilgan. 𝐸𝐵 ⃗⃗⃗⃗⃗⃗ vector quyidagilardan qaysi biriga teng. A) −2(𝐵𝐶
⃗⃗⃗⃗⃗⃗ − 𝐵𝐴 ⃗⃗⃗⃗⃗⃗) B) −2(𝐵𝐶 ⃗⃗⃗⃗⃗⃗ + 𝐵𝐴 ⃗⃗⃗⃗⃗⃗)
C) 2(𝐵𝐶 ⃗⃗⃗⃗⃗⃗ − 𝐵𝐴 ⃗⃗⃗⃗⃗⃗) D) 2(𝐵𝐶 ⃗⃗⃗⃗⃗⃗ + 𝐵𝐴 ⃗⃗⃗⃗⃗⃗)
27. Uchburchakning burchaklari 1:2:3 kabi nisbatda. Agar uchburchakning eng kichik tomoni 8 cm ga teng bo’lsa, uning eng katta tomonini toping. A) 8 B) 10 C) 3√3 D) 16
28. Uchburchakning ikki tomoni uzunligi 4√5 va 10 ga teng. Agar ularga tushirilgan medianalar o’zaro perpendekulyar bo’lsa, uchburchakning uchinchi tomonini toping. A) 6 B) 8 C) 12 D) 16
29. Teng yonli trapetsiyaning diogonali o’tkir burchagining bisektrissasi va katta asosi 20 ga, perimetri 55 ga teng bo’lsa, o’rta chizig’ini toping. A) 16 B) 16,5 C) 17 D) 15
30. Ikkita qo’shni burchaklar ayirmasi 36° ga teng bo’lsa, burchaklardan kattasini toping.
A) 84 ° B) 108° C) 96° D) 72°
GULISTON – 2019 MATEMATIKAFLY MADINABONU O’QUV MARKAZI Telegramdagi manzilimiz: https://telegram.me/matematikafly
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