Write an expression that represents the perimeter of triangle. Combine like terms.
3.x
3x
15
Perimeter of triangle:
If the perimeter of the triangle is 90, what is the value of x?

The value of x is 12.5

A triangle has 3 sides: side A, side B and side C

Perimeter of a triangle = side A + side B + side C

Side A = 3x

Side B = 3x

Side C = 15

Perimeter of a triangle = 90

Perimeter of a triangle = side A + side B + side C

90 = 3x + 3x + 15

90 - 15 = 3x + 3x

75 = 6x

x = 75 / 6

x = 12 3/6

x = 12 1/2

= 12.5

x = 12.5

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c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.