катеты АС и ВС прямоугольного треугольника АВС относятся как 6:8 соответственно. найти высоту прямоугольного треугольника, проведенную из вершины прямого угла, если гипотенуза равна 30
Предмет:
ГеометрияАвтор:
pooh bearhd22один катет 8х, другой 6х.
(8х)^2+(6х)^2=30^2
100х^2=900
х^2=9
х=3
первый катет=8*3=24
второй катет=6*3=18
(где a и b катеты, c - гипотенуза)
h=24*18/30=14,4см
Автор:
rocíoДобавить свой ответ
Вычислите массу фенола натрия, полученного при взимодействии фенола массой 9,4 г с натрием массой 1.6 г. Найдите массу фенолята
Предмет:
ХимияАвтор:
lilliannahaydenОтветов:
Смотреть
Use the words given in capitals at the end of each line to form a word that fits in each space in the same line. There is an example at the beginning (0).
Many people find their work rather (0) boring I get a lot of
(1) _______________from my job. Advertising can be very SATISFY
(2)_____ because you have to think of new ways CREATE
to attract people's________ (3) . The best way to ATTEND
do this is by surprising them. (4) ___________is boring FAMILIAR
and people soon get fed up with an (5) ______________ they ADVERTISE
have seen many times before. (6) _______________ they CONSCIOUS
want to be shocked. Apart from (7) _______________, the ORIGINAL
other really important (8) _________________ of a good campaign is CHARACTER
(9) _______________. After all if people don't remember MEMORABLE
what was being advertised, they won't buy the (10) PRODUCE
Предмет:
Английский языкАвтор:
ginafinleyОтветов:
Смотреть
Помогите пожалуйста решить задание. Change direct speech into indepect 1. "You pressed the wrong button", said the mechanic. 2. "We have a lift but very often it doesn't work", said my friend. 3. "I'm going away tomorrow, mother", he said. 4. "Peter, I shall be very busy next monday", said Mary. 5. "Why is Petrov absent today?" the teacher asked. 6. "When did you carry out this experiment", the engineer asked the worked. 7. "Will you john us in our trip?" we said to our friends. 8. "Nick, are you translating an article now?" he asked. 9. "Don't take your coat off. We are going out again", she told him. 10. "Write to me as soon as you can", said his wife.
Предмет:
Английский языкАвтор:
hatfieldОтветов:
Смотреть
Предмет:
МатематикаАвтор:
gavyngrimesОтветов:
Смотреть