Answer:
x = 13
∠F = 28°
∠S = 28°
y = 9
DE = 38 ft
Step-by-step explanation:
We are told that △DEF = △QRS
Looking at both triangles and by comparison, it is clear that;
∠R = ∠E = 123°
∠Q = ∠D = 29°
∠S = ∠F = 180 - (123 + 29) = 28°
Also,QR = DE
Thus; 5y - 7 = 38
5y = 38 + 7
5y = 45
y = 45/5
Thus,y = 9 and DE = 38 ft
We see in the image that ∠S = (2x + 2)°
From earlier we deduced that ∠S = 28°
Thus; 2x + 2 = 28
2x = 28 - 2
2x = 26
x = 26/2
x^2/9 z^2
hiiii checkout the steps
w = 0 , -3 , 3
w³ - 9w = 0
w(w² - 9) = 0
w(w² - 3²) = 0
w(w+3)(w-3) = 0 {a² - b² = (a + b)(a - b) }
w = 0 ; w + 3 = 0 ; w - 3 = 0
w = -3 ; w = 3
