a) 4k^2 + k – 5) + (7k^2 + 2k + 6)
11k^2 +3k +1
Choice A
Answer:
both the second and third one
Answer:
The surface area is 
Step-by-step explanation:
<u>Step 1: Determine the area of the bottom</u>



<u>Step 2: Determine the area of the triangles</u>




There are two of these right triangles on every side which means that we have 8 of these triangles so we multiply the area that we got by 8.


<u>Step 3: Combine the area to get the surface area</u>


Answer: The surface area is 
Answer:
Step-by-step explanation:
Coin 1 = quarter
Coin 2 = dine
Coin 3 = penny