Answer:7
Step-by-step explanation: 10 +10 +x+x=34
20+2x= 34
-20 20
2x=14 x=7
Answer: its width is 7cm
Step-by-step explanation:
<em>The perimeter of a </em><em>rectangle</em><em> is the sum of twice its length plus twice its width.</em>
perimeter = 2·length + 2·width
34centimeters = 2·10cm + 2·width
width = (34cm -20cm)/2 = 14cm/2 = 7cm
Answer:
The answer is below.
===========================================
Work Shown:
10x + 18 < -2
10x + 18-18 < -2-18 ... subtract 18 from both sides
10x < -20
10x/10 < -20/10 ... divide both sides by 10
x < -2
