Question

ans all the ques from attachment plzz fast​

Answer 1

13 ) b :-

• Angle A = 90°
• Angle B = 30°
• Angle C = ?

First Lets Find The Third Angle :-

$<A+<B+<C = 180° \:\:\:\:\:(Angle\:Sum\:Property) \\ =>90+30+<C = 180° \\ =>120°+<C = 180 \\ =><C = 180°-120° \\ => \boxed{<C = 60°}$

Now Lets Find The Value of x , y and z

$x+90 = 180 \:\:\:\:\: (Linear\:Pair) \\ => x =180-90 \\ =>\boxed{x = 90}$

$z+30=180\:\:\:\:\:(Linear\:Pair) \\ => y = 180 - 30 \\ =>\boxed{y=150}$

$y+60 = 180 \:\:\:\:\:(Linear\:Pair) \\ =>z=180-60 \\ =>\boxed{z=120}$

Now lets Add Them :-

$x+y+z \\ =>90+150+120 \\ =>\boxed{360}$

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14)a :-

• Length(l) = 13 cm

• $Breadth = 2\frac {3}{4}$

Now Lets Find The Perimeter :-

$\color{purple}{Perimeter=2(l+b)} \\ =>2(13+2\frac {3}{4}) \\ =>2(13+\frac{11}{4} ) \\ =)2 (\frac{52+11}{4} ) \\ =>2 \times \frac{63}{4} \\ =>\boxed{\frac{63}{2}}$

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14) b :-

$6x+7=3x-14 \\ =>6x-3x=-14-7 \\ =>3x = -21 \\ =>x = \frac{21}{-3} \\ => \boxed{x = -7}$

Hope it helped