Предмет: Математика, автор: karinarihter0

Периметр прямоугольника равен 24 метра. Одна его сторона по сравнению с другой 1) На 3 метра длиннее. 2) на 2 метра короче 3) в два раза меньше. Найдите стороны прямоугольника.
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Ответы

Автор ответа: Rocksi
0
1. Пусть одна сторона х, тогда другая х+3, т.к. периметр 24, составим уравнение 2 (х +х +3) = 24, 2х+3= 12, 2х=9, х= 4,5 - одна сторона, вторая 4,5+3=7,5 см
2. Одна сторона - х, вторая - х-2, уравнение: 2 (х+ х -2) = 24, 2х-2=12, 2х = 14, х = 7- одна сторона, х-2=5 - вторая сторона
3. Одна сторона х, вторая - 2х, уравнение: 2 (х+2х)=24, 3х=12, х= 4 - одна сторона, 2х=8 - вторая сторона.
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Look! Now this robot arm ( to compress ) the box.

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John ( to program ) their now manipulator for an hour before Mike entered the lab

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Dan thought that his team ( to sell ) all the vehicles by the next Friday

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Our manager ( to call ) you as soon at possible.

I ( to buy ) that AIO last September

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There ( to be ) an old factory here 20 years ago.

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