Answer:
20 units
Step-by-step explanation:
s = 8
Perimeter = s + s + 

= 8 + 8 + 4
= 20 units
A) sum 3 + 7 =10
b) divide <span> £</span>300 ÷ 10 = <span> £</span>30
c) multiply:
3 x 30 = <span> £</span>90
7 x 30 = <span> £</span>210
Values are: £90 and <span> £210</span>
1) -2 -6
2) -2 -y
3) -2 -6 + -y
4) -2 -6 -y
30 divided by 3. Their are 3 sets of ten by 30 positives
(40+x)/2=60
40 +x = 120
x = 80
check :
40+80 = 120
120/2 = 60
so his second round needs to be 80 mph