Find the solutions to the equation by completing the square x^2-6x=7
1 answer:
The answers are x=7 and x=-1
Look at my photo for the work. I’m not sure if that’s exactly “completing the square”, (sorry I did my best) but the method I did in this works better for me.
What I find helps is when you multiply the coefficient of the first term (in this case 1 in the 1x^2) by the last term (-7). Then, find factors of -7 that add to the middle term (-6). The factors I found were 1 and -7. Then substitute them into the equation so it’s x^2 + 1x-7x -7=0. The value of the equation stays the same, except now you are able to group.
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Answer:
<em>A stack of 4 trillion one dollar bills will be meters.</em>
Step-by-step explanation:
The annual expenditure of the US federal government is approximately 4 trillion dollars.
We know, 1 trillion dollars = 10¹² dollars.
So, 4 trillion dollars dollars.
Each one dollar bill is 0.0001 meters thick.
So, the total height of the stack of 4 trillion one dollar bills will be.....