Answer:
5) p=67.5
6) p=60.9
Step-by-step explanation:
To find the perimeter of a polygon you add all the side lengths together.
Step 1:
11.3+11.3+23.3+21.6=67.5
Step 2:
19.7+14+9.3+17.9=60.9
Answer:
3 because 3 x 2 + 3 x 8 = 30 and 3(2+8)=30
Answer:
5
Step-by-step explanation:
Using the rule of radicals
× 
⇔ 
, then
= 
= 
×
= 5
Answer:
31
Step-by-step explanation:
Increases by 7 each time
Answer:
a) i) x = 6, y = 9
ii) 20
iii) -5
b) -40
Step-by-step explanation:
3(6) - 2(9)
18 - 18 = 0
greatest
3(10) - 2(5)
30 - 10
20
least
3(5) - 2(10)
15 - 20
-5
5(a - 4b)
5[-7 - 4(¼)]
5(-7 - 1)
5(-8)
-40
