Точка S делит отрезок РТ на два отрезка.Найдите длину отрезка РТ,если ST = 11.9 mm. ST = 8.7mm

найдите наименьший положительный период функции y=cos x/4

Нет жизни без знания ,нет знания без учения. (Нати основы и определить определёно личное или не определёно личное или обобщёно личное или безличное)

1. You (to go) for a walk with me? — I (to be) sorry, I can't. I (to do) my homework. I (not 

Упр. 227. Раскройте скобки, употребляя гла­голы в одном из следующих времен: Present, Past, Future Simple; Present, Past Continuous; Present, Past Perfect.

1. You (to go) for a walk with me? — I (to be) sorry, I can't. I (to do) my homework. I (not yet to write) the English exercise. If you (to wait) for me, I (to go) with you in half an hour. I (to want) to go for a walk very much, because I (not to go) for a walk yesterday. 2. Don't go to Nick's place now, he (to work). He (to finish) his homework at seven o'clock. If you (to come) after seven, he (to be) very glad. 3. Pete (to go) to the cinema? — Yes, I (to think) so. He usually (to play) in the yard at this time, and now he (not to be) there. 4. He (to read) a book at five o'clock  esterday.

5. Yesterday the children (to do) all their home­work before mother (to come) home, and when she (to come), they (to play) with the cat. 6. I (to lose) my key when I (to play) in the yard yesterday. 7. Ring me up as soon as you (to come) home. 8. Where you usually (to take) books for reading? 

Две стороны параллелограмма равны 10 и 9. Из одной вершины  на две стороны опустили высоты, как показанно на рисунке. Длина большей из высот  равна 6. Найдите длинну другой высоты.