So your seeing what the difference is between them
Answer:
7.8×10⁷
Step-by-step explanation:
You want to keep the coefficient (7.8) between 1 and 10 to achieve a normalized notation. Otherwise 78×10⁶ would also be an option.
Answer: 62
Step-by-step explanation: Set up your equation
- 21+x=2x-41 because the number (x) that 21 is added to is 41 <em>less than</em> (so subtraction) <em>twice </em>(so multiply the number x by 2) the number (x).
- Get the x's on one side by subtracting the single x
- 21=x-41
- Now add 41 to both sides to completely isolate x
- 62=x
- So, your answer is x=62. The number is 62.
Check your work. 62+21=83. 2(62)= 124. 124-41=83. Both equations equal 83, so the solution is correct.
