Решите уравнение: 6, 2×(3-2х)=20-(12, 4х+1, 4)

6,2(3-2х)=20-(12,4х+1,4)

18,6-12,4х=20-12,4х-1,4

18,6-12,4х-20+1,4=-12,4х

-12,4х=-12,4х

-12,4х+12,4х=0

0=0

ответ: 25

Объяснение:

Рассмотрим треугольник со сторонами 16 и 12, в нем неизвестная сторона будет равна: х==20

Воспользуемся свойством высоты в прямоугольном треугольнике, проведенной из прямого угла:

Высота прямоугольного треугольника, проведенная из вершины прямого угла, разделяет треугольник на два подобных ему, каждый из которых подобен данному.

Используя отношение найдем второй катет большого треугольника через маленькие:

, где х=15

Найдем гипотенузу через формулы площади треугольника.

S=, где а=16+х, h=12

а=16+х-гипотенуза

S=, где sin90=1, а=20, b=15.

S==150

150=, а==25.

0 және не знаю как гOTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

Write the correct preposition, then complete the

sentences for you.

Write the correct preposition, then complete the

sentences for you.

Write the correct preposition, then complete the

sentences for you.

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

OTBET:

the afternoon, learn work

in lunchtime, I eat pizza and drink juice

in night, I watch TV or play mobile games

in weekend, I go to picnicin

Write the correct preposition, then complete the

sentences for you.

Write the correct preposition, then complete the

sentences for you.

Write the correct preposition, then complete the

sentences for you.

Write the correct preposition, then complete the

sentences for you.

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