Answer:
2
Step-by-step explanation:
2k+3=7
2k=4
k=2
Answer: The table is proportional.
Step-by-step explanation: You would do 21/6 to get 3.5. Then 28/8 to get 3.5. After 35/10 to get 3.5. Finally 49/14 to get 3.5. If each answer (3.5) is the same than it is proportional.
Answer:
The area of the circle is 153.86. Plz give me brainliest!
Step-by-step explanation:
Carmen has given 6 coins to her brother<span />
Answer:

Step-by-step explanation:
Let sides of the triangle be 

Semi-perimeter (s) = 

Area of one tile 

So,
Area of 20 tiles 
Cost of polishing the floor at the rate of 2 rupees per sq.cm = 