Перейти к выбору ответа 01.04.2022Реши уравнение: 1/5x+7=17−1/20x Выбрать другой вопрос Смотреть ответ Перейти к выбору ответа Математика Вопрос школьника по предмету Математика Реши уравнение: 1/5x+7=17−1/20x Ответ учителя по предмету Математика 1/5x+7=17−1/20x1/5x+1/20x=17-71/5x+1/20x=104/20x+1/20x=405/20x=40x=40:5/20=40*20/5x=160
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Bethany, the surfer who lost an arm
Bethany Hamilton was the best girl surfer of her age when she lost an arm in a shark attack. She was only thirteen years old and was surfing in Hawaii when a tiger shark attacked her and tore off her left arm. It happened so fast she didn’t even scream.
But Bethany was determined to get back on a surf board as soon as possible. As soon as she left hospital, she began practising her surfing exercises on the beach. Everyone was amazed to see her surfing so soon after her accident. Incredibly, she finished 5th at the National Surfing Championships.
‘The first time I went back into the sea I was so happy I cried,’ she said. ‘It was easier than I thought. But obviously it’s much more difficult than with both arms, and I have to accept I’ll probably never be world champion, which used to be my dream.’
а) (2х-3у)-(5х+2у)
б) -(р-3q)+(4q-2p)
в) (-x+5y)-(-x-3y)
з) (-3z+y)-(-16z-5y)
г) -(-3x-5c)-(3c+8x)
д) (-у-х)-(-у-х)
е) (2m-n)+(n+4m)
ж) (p-2q)-(4q+p)
и) -(с+d)+(-c-3d)
к) -(-6х+3у)-(-2х+1)