Ответ:
1) x = (6×5)/4 = 7,5; пропорция - 4/5 = 6/7,5;
2) x = (7×9)/5 = 12,6; пропорция - 5/7 = 9/12,6;
3) x = (2 1/3 × 4 1/2)/4 = (7/3 × 9/2)/4 = 63/6 × 1/4 = 63/24 = 21/8 = 2 5/8; пропорция - 4 ÷ 2 1/3 = 4 1/2 ÷ 2 5/8.
Ответ: 7,5; 12,6; 2 5/8
Пошаговое объяснение:
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
1) x = (6×5)/4 = 7,5; пропорция - 4/5 = 6/7,5;
2) x = (7×9)/5 = 12,6; пропорция - 5/7 = 9/12,6;
3) x = (2 1/3 × 4 1/2)/4 = (7/3 × 9/2)/4 = 63/6 × 1/4 = 63/24 = 21/8 = 2 5/8; пропорция - 4 ÷ 2 1/3 = 4 1/2 ÷ 2 5/8.
Ответ: 7,5; 12,6; 2 5/8
Пошаговое объяснение: