Предмет: Математика, автор: rdaraaxunova

Выполните умножение:
1) 5/6 × 1 6/5=?
2) 3 1/9 × 3/4=?
3) 10 1/5 × 10/17=?
4) 9 1/7 × 3/4=?
5) 3/11 × 5 1/2=?
Помогите пж Дарю 15 баллов!

Ответы

Автор ответа: zhenyaM2002

1) 5/6 × 1 6/5 = (5×11) / ( 6×5) = 11/6 = 1 5/6
2) 3 1/9 ×3/4 = (28×3 )/(9×4) = (7×1)/ (3×1)= 7/3 = 2 1/3
3) 10 1/5 × 10/7 = (51×10) / (5×7)= 102/7 = 14 4/7
4) 9 1/7 ×3/4 = (64×3) / (7×4)= (16×3) / (7×1)= 48/7 = 6 6/7
5) 3/11 × 5 1/2 = (3×11)/ (11×2)= 3/2 = 1 1/2

Автор ответа: zhenyaM2002

Всегда пожалуйста.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: skaueywhiw

Срочно даю 25 баллов Read the text and fill in the gaps transforming the capitalized words (each capitalized word should be transformed).
Games and playing are very important for children. They use creativity and
IMAGINE on the playground. Kids also learn social skills there.
So breaks between classes play a
REAL important role in kids’ education.
SCIENCE say having little playtime is
HARM for children. They studied more than 10,000 elementary school children in the US. The results are: if children play less than 15 minutes during the day, their behaviour becomes worse. What’s more, they have poorer marks in
NATIONAL tests.
But unfortunately in most schools, more attention is paid to classes and results, not games.

6 лет назад

Предмет: Химия, автор: sanyatankistitch

Выберите два соединения, в которых степень окисления атомов и валентность численно не совпадают
1
NH4Cl
2
H2SO4
3
NH3
4
PCl5
5
HCl
6
N2

6 лет назад

Предмет: Алгебра, автор: Аноним