giovney
15.10.2020 •
Mathematics
9th October 2020
Assignment
1. The perimeter of a bectangular plot of land whose length
is (2x+5)m and width (x-10)m is 80m
find the value of ×
Solved
Show answers
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Ответ:
x = 15
Step-by-step explanation:
The perimeter is the sum of the 2 lengths and 2 widths.
Step 1: 2 times the length is 4x + 10
Step 2: 2 times the width is 2x - 20
Step 3: Add the both results together.
6x - 10
Step 4: Create an algebraic equation.
6x - 10 = 80
Step 5: Solve for x.
6x = 90
6x/6 = 90/6
x = 15
Ответ: