Предмет: Математика, автор: gostevskaia

скорость полета вороны равна 50 км ч что составляет 5 девятых от скорости полёта утки скорость полета утки составляет 5 седьмых от скорости полёта чайки Найдите скорость полёта чайки
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Ответы

Автор ответа: NataMon
2

Ответ:

126 км/час  скорость полёта чайки

Пошаговое объяснение:

Пусть скорость полёта чайки = х км/ч. Тогда:

5/7х км/ч скорость полёта утки

5/9*5/7х = 25/63х км/ч скорость полёта вороны что составляет 50 км/ч

х = 50 : 25/63 = 50 * 63/25 = 126 км/час  скорость полёта чайки

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5/7*126 = 90 км/час скорость полёта утки

25/63 * 126 = 50 км/час скорость полёта вороны

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Eat Well Stay Healthy
We all know we should be eating a healthier balanced diet and getting more exercise. To make it work we need to build good habits into our daily routine. We should try not to eat ''on the run''. This means taking time to plan and prepare healthy meals at home so that we rely less on fast food microwave meals and unhealthy snacks. We should also control the amout of fat sugar and salt in our diet.
Here are a few tips to make healthy diet choices:
Eating three regular meals with good snacks in between encourages healthy energy levels and weight. When eating away from home you can bring healthy snacks and drinks..
Grilling,stir-frying,baking and boling are healthy ways to cook food. Use fresh or dried herbs and spices to flavour food instead of adding toppings like butter,margarine, or gravy.
Sugary drinks are a source of empty energy (in the from of calories) that you don`t need, without vitamins,minerals, or protein. Try sugar-free sodas or flavoured waters instead of regular soda or juice. Lots of sugar is found in desserts such as cakes, cookies, and sweets. Enjoy these foods in moderation.
Eat slowly. It takes twenty minutes before you`re feeling full. Eating when hungry and stopping when full will help balance the body`s energy needs. Eat when you`re hungry not when stressed or bored. Fibre rich foods such as whole grains,vegetables,and fruits increase the feeling of being full.
There aren`t any bad foods and even so-called diet foods or drinks are not lower in calories. Weight loss in your growing body can permanently affect your growth in height.