The diagram shows a pentagon. It has one line of symmetry.
AE= 4x
AB= 2x+3
BC= x+1
All these measurements are given in centimetres. The perimeter of the pentagon is 21cm.
A)Write an equation, in terms of x, for the perimeter of the pentagon.
Your final line should be in the form ax+b= 21 where a and b are.
B) find the value of x

A) 10x + 8 = 21

B) x = 1.3

Step-by-step explanation:

2(2x + 3) + 2(x + 1) + 4x = 21

4x + 6 + 2x + 2 + 4x = 21

10x + 8 = 21

10x = 13

x = 1.3 cm

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!