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 ×

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

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.