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Ainat [17]
3 years ago
6

Which is greater, -9/20 or -0.5?

Mathematics
1 answer:
Natali5045456 [20]3 years ago
3 0

Answer and Step-by-step explanation:

If we put -\frac{9}{20} into decimal form, we get -0.45.

-0.45 is greater than -0.5, so,

<u></u>-\frac{9}{20}<u> is greater than -0.5.</u>

<u></u>

<u></u>

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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A rectangular poster is to contain 882 square inches of print. The margins at the top and bottom of the poster are to be 2 inche
Zinaida [17]

Answer:

L  =  23 in

h  = 46  in

Step-by-step explanation:

Let call  " x "  and  " y "  dimensions of the print area of the poster then:

882 = x*y  and   y = 882/x

We also know that dimensions of the poster is:

L  =  x + 2   in  and     h  =  y + 4 in

Therefore area of the poster is:

A(p)  = ( x + 2 ) * ( y + 4 )  And area as function of x is:

A(x)  =   ( x + 2 ) * ( 882/x + 4 )

A(x)  =  882 + 4*x + 1764 /x  + 8

Taking derivatives on both sides of the equation we have:

A´(x)  =  4  - 1764/x²

A´(x)  = 0      ⇒      4  - 1764/x² = 0      ⇒ 4*x² - 1764  =  0

x²  =  1764 / 4

x²  = 441

x  = 21 in      and    y  =  882/x         y  = 42

The second derivative  A´´(x)  is > 0  ( the second term changes its sign to +) there is a minimum for the function at the point      x = 21

As x   and  y are dimensions of the printing area of the poster, dimensions of the poster  are

L  = x  +  2   =   21  + 2  =  23 in   and

h = y  +  4   =   42  + 4  =  46  in

4 0
3 years ago
What percent of 60 is 3? <br> Show work please?<br> Thank you !
masya89 [10]

Answer:

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you know 10% of 60 is 6. 3 is half of 6, and 5% is half of 10.

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2 years ago
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<u>Step-by-step explanation</u> and Answers:

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cot = \frac{adjacent}{opposite} = \frac{1}{3}

7 0
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