number 7 is as follows Answer: C18.9
Step-by-step explanation:
The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. so (5.65x2)+(3.8x2)=18.9 cm
Answer:
58
Step-by-step explanation:
You just have to replace the value of n with 4.
C(n) = 46 + 3n
C(4) = 46 + 3(4)
= 46 + 12
= 58
Answer: 60°
Step-by-step explanation: 180 - 120 = 60.
Answer:
d) 
Go to station 10
Step-by-step explanation:

Expand:


Subtract 41 from both sides:


Divide both sides by -1:

