Answer:
D
Step-by-step explanation:
3/7 + 6/7 = 9/7
Change 9/7 to a mixed number = 1 2/7
Add your whole numbers: 1 + 10 + 1 = 12
Answer: 12 2/7
<span><u><em>Answer:</em></u>
(5 * 1) + (9 * 0.1).<span>
<u><em>Explanation:</em></u>
To write a number in expanded form you have each digit multiplied by its numbers place and add each digit together. 5 is in the ones place so it becomes (5 * 1).
9 is in the tenths place so it becomes (9 * 0.1).
add them together to get (5 * 1) + (9 * 0.1)</span></span>
