в прямоугольном паралелепипеде измерения равны 5, 7, корень из 47.найти диагональ паралелепипеда и синус угла между диагональю паралелепипеда и плоскостью его основания

which is right? complete the sentences. 1) What are her plans? when........(does she come/ will she come/ is she coming) home? 2) what do you think?.........(does she come /will she come/is she coming) home late today? 3) -when.....(does she come/has she come/did she come) home yesterday? 4) ...........(does she come/has she come/did she come) home yet? - i......(dont know/didnt know/ havent known). i ......(dont see/ didnt see/havent seen) her today. 5) we promise you.........(have/will have/are going to have) a good time 6) when we (are/were/have been) young, we........(were playing/played/ used to play) together in our garden. now we .........(are/ were/ have been) students. we....... (dont have/didnt have/ havent had) any time to play. 7)you can (find/to find/found) them in the garden. they.........(play/ are playing) 8) while i......(cooked/ have cooked/was cooking), my brother.......(washed/have washed/was washing) the floor. 9) she couldnt come because she (works/has worked/ was working) in the garden 10) what.......(did you do/were you doing) when the telephone.......(rang/was ringing).

составить предложения с приложениями с союзом как,чтобы обособлялось и 5 предложений чтобы не обособлялись

(корень 3)*cos^2(x)-sin 4x-(корень 3)*sin^2(x) =0

Определите глубину шахты,на дне которой давление=820 мм рт. ст.,еслт на поверхности земли даление=790 мм рт. ст.