Answered

IDNLearn.com: Your trusted source for finding accurate answers. Get the information you need from our community of experts who provide accurate and thorough answers to all your questions.

PLEASE HELP IM BEGGING Ira B. Scholar, that bizarre math teacher, put the figure at right on a recent test and said,
"If the perimeter is 25, solve for x." Show Ira B. that such a figure does not exist. Use algebra and
explain your result (why perimeter cannot equal 25).

PLEASE HELP IM BEGGING Ira B Scholar That Bizarre Math Teacher Put The Figure At Right On A Recent Test And Said If The Perimeter Is 25 Solve For X Show Ira B T class=

Sagot :

Semsee45idn

Answer:

The perimeter is the distance all the way around the outside of a 2D shape.  To calculate the perimeter, sum the lengths of all the sides.

Therefore, perimeter of the triangle = (2x - 8) + (2x + 5) + (30 - 3x)

Collect like terms:  2x + 2x - 3x - 8 + 5 + 30

Combine like terms:  x + 27

Therefore, perimeter of triangle = x + 27

We are told that the perimeter is 25:

x + 27 = 25

Subtract 27 from both sides: x = -2

If x = -2, then the side with equation 2x - 8 = (2 x -2) - 8 = -12

A length cannot be negative, therefore the perimeter cannot equal 25.

Thank you for contributing to our discussion. Don't forget to check back for new answers. Keep asking, answering, and sharing useful information. Thank you for visiting IDNLearn.com. We’re here to provide accurate and reliable answers, so visit us again soon.