its 14n+21. 7×2n is 14n, and 3×7 is 21
Answer:
The answer to your question is x = 21
Step-by-step explanation:
Equation

- Multiply both sides by 7

- Simplify
2x = 42
- Divide both sides by 2

- Simplify
x = 21
Answer:
C. E.
Step-by-step explanation:
You have divided 4,000000 by 100 so it became 40000 so 4000000 has 100 more whole number places
Answer:
The answer should be 55
Step-by-step explanation:
All triangles must = 180
70+55+55 = 180