Matematikadan test savollari Agar x = -2 bo’lsa, y = 3x funksiyaning qiymatini toping


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138. To`g`ri burchakli uchburchakningkateti 7 ga , uning gipotenuzaga proeksiyasi 1,96 ga teng. Ikkinchi ketetning uzunligini toping.

А) 12


B) 16

C) 24


D) 15
139. Uchburchakning tomonlari 3, 4 va 6 ga teng. 5 ga teng bo`lgan tomon qarshisidagi burchakning kosinusini toping.

А) -1/2


B) 5/18

C) ½


D) 5/9
140. Perimetrlari 24 va 36 bo`lgan ikki o`xshash uchburchakdan birining yuzi ikkinchisinikidan 10 ga ortiq. Kichik uchburchakning yuzini toping.

А) 20


B) 16

C) 8


D) 12
141. Tomonlari 13; 14 va 15 sm bo`lgan uchburchakning eng kichik balandligi necha sm?

А) 11,2


B) 11,1

C) 11


D) 11,5
142. To`rtburchakning burchaklaridan biri to`g`ri burchak, qolganlari esa o`zaro 4:3:2 nisbatda.To`rtburchakning kichik burchagini toping.

А)

B)

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