Question

A wire with a length of 100 cm is cut into three parts. The length of wire for the first and second parts are
the same. The length of the third part of the wire exceeds the sum of the first two parts by 4 cm. Calculate
the length of each part

Answer 1

Resposta:

First part: 24; Second part 24; Third part: 52

Explicação passo a passo:

Well, if you are using Brazil Brainly you should make questions in portuguese ok? but at this time I'll help you. So, let's say that the first and the second parts of this wire have a length of x, because both has the same length.

Lets consider y the length of the third part of this wire. In the utterance of the question is sayed that the third part of this wire exceeds the sum of the first parts by 4 cm, so we can say that this third part has a length of $x + x + 4.$

Remember, we called y the third part of the wire. So the total length of this wire can be expressed by the following equation:

$x + x + y = 100\\2x + (x + x + 4) = 100\\2x + 2x + 4 = 100\\4x + 4 = 100\\4x = 96\\x = 24$

That's it, now we know the value of x and can calculate the length of each part of the wire. The first and the second parts has the same x length, and x = 24. The third part has the value of y cm and y is equals 2x + 4, which results in 52.

I hope I helped you but please use the brainly of your country.