Answer: 20
Step-by-step explanation:
x+y=5
x-y=4
---------
x+y=5
x=4+y
--------
(4+y)+y=5
4+y+y=5
4+2y=5
2y=1
y=0.5
x=4.5
---------
x²-y²=(4.5)²-(0.5)²=20.25-0.25=20
Answer:
690
Step-by-step explanation:
Round from the tens place.
Answer:
$80 billion
Step-by-step explanation:
From the graph, we have the following:





Required
Determine the difference in US and Denmark exports
The difference is calculated as thus:

This gives:



<em>Hence, the difference is $80 billion</em>
4 times 3.14 times 8 squared
803.8
Answer: 43 degrees
Explanation: All of the angles inside of a triangle add to equal 180 degrees. All you have to do is subtract the two angle measures from 180 degrees to get the answer.
180-90-47=43 degrees