The perimeter of the triangle below is 89 units. Find the length of side BC.
Write your answer without variables.

The length of the CD of the rectangle will be 23 units.
What is the perimeter of the rectangle?
The sum of all the sides of the rectangle will be known as the perimeter of the rectangle.
Let L be the length and W be the width of the rectangle.
Then the perimeter of the rectangle will be
Perimeter of the rectangle = 2(L + W) units
The perimeter of the rectangle below is 98 units.

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devishri1977 devishri1977 · Answer 2 · 2022-10-17T19:46:40+02:00

Answer:

BC = 10 units

Step-by-step explanation:

Perimeter of triangle:

Perimeter = Sum of all sides

y + 1 + 4y + 5y - 2 = 89 units

y + 4y + 5y + 1 - 2 = 89

Combine like terms,

10y - 1 = 89

Add 1 to both sides,

10y = 89 + 1

10y = 90

Divide both sides by 10,

y = 90 ÷ 10

y = 9 units

BC = y + 1

= 9 + 1

= 10 units

The perimeter of the triangle below is 89 units. Find the length of side BC. Write your answer without variables.

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Perimeter of triangle:

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The perimeter of the triangle below is 89 units. Find the length of side BC.
Write your answer without variables.