$equals\ 7\to=7\\sum\ of\ a\ number\ and\ 9\to n+9\ (n-the\ number)\\twice\ the\ sum\ ...\to2(n+9)\\\\Answer:\boxed{2(n+9)=7}\\\\solution:\\\\2(n+9)=7\ \ \ \ |divide\ both\ sides\ by\ 2\\n+9=3.5\ \ \ \ |subtract\ 9\ from\ both\ sides\\\boxed{n=-5.5}$

4 0

3 years ago

What is the answer to 2937682+28373938

xxMikexx [17]

Answer: 31311620

Step-by-step explanation: Calculator

5 0

2 years ago

12 things that has energy

Lapatulllka [165]

Answer: Kinetic Energy Potential Energy Chemical Energy Elastic Energy Gravitational Energy Magnetic Energy Nuclear Energy Light Energy Radiant Energy Sound Energy Thermal Energy Mechanical Energy Electrical Energy

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers