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3 years ago

11

How many ten dollar bills are there in twenty one hundred bills?

2 answers:

Yanka [14]3 years ago

7 0

20 one hundred bills = 2000
2000 divided by 10 = 200
The answer is 200

VLD [36.1K]3 years ago

5 0

Well, first find out how many dollars twenty-one hundred is. There is 2100. Then you divide and get 210

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3 years ago

What is the addititve inverse of 63

denis23 [38]

Additive Inverse of 63 = -63
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3 years ago

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System of Equations <br> Need help<br> Trig

Yanka [14]

Looks like the system is

$\begin{cases}-2x+y+6z=1\\3x+2y+5z=16\\7x+3y-4z=11\end{cases}$

We can eliminate $y$ by taking

$(3x+2y+5z)-2(-2x+y+6z)=16-2(1)$

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$\implies x-z=2$

so that $z=x-2$ , and

$(7x+3y-4z)-3(-2x+y+6z)=11-3(1)$

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$\implies13x-22z=8$

Substitute $z=x-2$ into this last equation and solve for $x$ :

$13x-22(x-2)=8$

$\implies13x-22x+44=8$

$\implies-9x=-36$

$\implies x=4$

Then

$z=x-2$

$\implies z=4-2$

$\implies z=2$

Plug these values into any one of the original equation to solve for $y$ :

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Hence the solution is x = 4, y = -3, and z = 2.

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3 years ago

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Taya2010 [7]

$\huge\fbox\green{ANSWER}$

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$\mathsf \blue{83.25 {cm}^{2} }$

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2 years ago

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Darina [25.2K]

the upside down T is always perpendicular so the answer is b. :)

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3 years ago

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