56 772
- 34 895
= 21 877
Rounds off to
22 000
Answer: second 11
first 18
Second 13
Step-by-step explanation:
<span>As of January 8, 2015, the U.S. is $18.1 trillion in debt. (Source: National Priorities Project)
1 Trillion
= 1 Thousand Billion
= 1,000,000,000,000
= 10</span>¹²
<span>
---------------------------
U.S National debt currently stands at:
$ 18.1 x 10</span>¹²
<span>
*<em>What information would be lost?</em> Well firstly the 0's. The 0's put the size of the number into perspective. The word "trillion" would also be taken out of the picture, once again altering the perspective of the number.
Personally I'd prefer to hear "18.1 Trillion Dollars". Sounds more interesting.</span>
Answer:

Step-by-step explanation:
1 Subtract z from both sides.

2 Divide both sides by y

3 Switch sides.

2nd question
Answer: 
Step-by-step explanation:
1 Subtract h from both sides

2 Multiply both sides by j.

3 Divide both sides by k−h.

4 Switch sides.

Answer:
The surface area of the red square is 180, and the surface area of the blue square is 328. So the full answer is 508.
Step-by-step explanation:
A = 2( width times length +height times length +height times width ) = 2(6 times 3 + 8 times 3 + 8 times 6)=180
A = 2(width times length + height times length + height times width) = 2(2 times 12 + 10 times 12 + 10 times 2) = 328
And 328 + 180 = 508.