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The sum of the opposite angles in cyclic quadrilateral is 180° ∠A = 1x ∠B = 4x ∠C = 5x ∠A + ∠C = 180° 1x + 5x = 180° x = 30° ∠B = 4 × 30° = 120° ∠B + ∠D = 180° 120° + ∠D = 180° ∠D = 60°
14, 27, 40, 53, 67, 79
? + 144.99 – 110.01 = 15.01 × 7.98
? = 540.24 + 1022.97 – 11.992
956.41 of 45.06% = ?
√2025.12 × √256.03 + √399.89 ×√(?) = 33.99 × 40.12
13.232 + 19.98% of 549.99 = ? × 8.99
(44/25) ÷ (154/199.5) × 419.91 = ? – (11.11)3
44.84% of 799.94 + (625.21 ÷ 24.91) – √(224.77) = ?
78% of 1450 + 26² = ? + 1323 ÷ 17