1) 6:2=3-сшила
2)15-3=12
Ответ:осталось сшить 12 пальто.
1) 30-4=26(ш). 2) 26:2=13(ш). 3)13+4=17(ш)-зеленые. 4)30-17=13(ш)-красных
|a| = √( (2m)² + 2² + 3²) = √(4m²+4+9) = √(4m²+13)
|b| = √( (-6)² + (-2)² + m²) = √( 36+4+m²) = √(m²+40)
|a|=|b|,
√(4m² + 13) = √(m² + 40),
4m²+ 13 = m² + 40,
4m² - m² = 40 - 13,
3m² = 27,
m² = 27/3 = 9,
m = -√9 или m = √9,
m = -3 или m = 3.
1) ³/₄ : ⁹/₁ =³/₄ × ¹/₉=³ˣ¹/₄ₓ₉=¹/₁₂<span>
2) </span>²/₅ : ¹⁰/₁= ²/₅ × ¹/₁₀=²/₅₀=¹/₂₅=0,04<span>
3) </span>¹¹/₁₅ : ²²/₁= ¹¹/₁₅ × ¹/₂₂=¹¹ˣ¹/₁₅ˣ₂₂=¹/₁₅ₓ₂=¹/₃₀<span>
4) </span>⁴/₇ : ²/₁= ⁴/₇ × ¹/₂= ⁴ˣ¹/₇ₓ₂=²/₇<span>
5) 2 </span>¹/₇ : ¹⁵/₁=¹⁵/₇ : ¹⁵/₁ =¹⁵/₇ × ¹/₁₅=¹⁵ˣ¹/₇ₓ₁₅=¹/₇<span>
6) 1 </span>⁷/₉ : ⁸/₁ = ¹⁶/₉ : ⁸/₁ = ¹⁶/₉ × ¹/₈ = ¹⁶ˣ¹/₉ₓ₈=²/₉<span>
7) 4 </span>¹/₂ : ⁶/₁=⁹/₂ : ⁶/₁=⁹/₂ × ¹/₆=⁹ˣ¹/₂ₓ₆=³/₂ₓ₂=³/₄=0,75<span>
8) 5 </span>¹/₄ : ⁷/₁=²¹/₄ : ⁷/₁= ²¹/₄ × ¹/₇=²¹ˣ¹/₄ₓ₇=³/₄=0,75