Question

Составте вырожение для длины незамкнутой ломаной АВDC, если АВ= х метров ВС на 2,39 меньше АВ, а СD на 5,32 дециметров больше АВ,упростите его 5 класс помоготе плиз отдам 20 баллов

Answer 1

ВС = х-2,39
СД=х+5,32
длина=х+х-2,39+х+5,32=3х+2,93

Answer 2

Expression for the Length of the Unclosed Polygon ABCD

To find the expression for the length of the unclosed polygon ABCD, we need to consider the given information:

- AB = x meters - BC is 2.39 meters less than AB - CD is 5.32 decimeters (or 0.532 meters) greater than AB

Let's break down the problem step by step:

1. Start with AB = x meters. 2. BC is 2.39 meters less than AB, so BC = AB - 2.39. 3. CD is 0.532 meters greater than AB, so CD = AB + 0.532. 4. Finally, to find the length of the unclosed polygon ABCD, we add the lengths of all the sides: AB + BC + CD.

Putting it all together, the expression for the length of the unclosed polygon ABCD is:

ABCD = AB + BC + CD = x + (x - 2.39) + (x + 0.532)

Simplifying the expression, we get:

ABCD = 3x - 1.858

So, the simplified expression for the length of the unclosed polygon ABCD is 3x - 1.858.

Please note that this expression assumes that the polygon ABCD is not closed and does not include any additional sides or segments beyond the given AB, BC, and CD.

I hope this helps! Let me know if you have any further questions.