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scoundrel [369]
3 years ago
13

Please help this is timed! I’ll give brainliest.

Mathematics
1 answer:
Alex17521 [72]3 years ago
6 0

Answer:

1. Function 1

2. Function 3

3. Function 2, Function 3, and Function 4

Step-by-step explanation:

I did this for someone else and it took me a long time to explain, so here's the answers since this is timed.

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The top and bottom margins of a poster 6 cm each, and the side margins are 4 cm each. If the area of the printed material on the
Serga [27]

Answer:

p = 25,20 cm

h = 34,32 cm

A(min) = 864,86 cm²

Step-by-step explanation:

Let call p and h dimensions of a poster, ( length , and height respectively) and x and y  dimensions of the printed area of the poster then

p = x + 8        and      h = y + 12

Printed area = A(p) = 384 cm²     and   A(p) = x*y     ⇒ y = A(p)/x

y = 384 / x

Poster area  =  A(t) = ( x + 8 ) * ( y + 12 ) ⇒ A(t) =  ( x + 8 ) * [( 384/x ) + 12 ]

A(t)  =  384 + 12x + 3072/x + 96      A(t) = 480 + 3072/x + 12x

A(t)  =  [480x + 12x² + 3072 ] / x

A´(t) =  [(480 + 24x )* x  - (480x + 12x² + 3072]/x²

A´(t) =  0         [(480 + 24x )* x  - 480x - 12x² - 3072] =0

480x + 24x² -480x -12x² - 3072 = 0

12x² = 3072         x² = 296

x = 17,20 cm       and      y =  384/17,20      y = 22,32 cm

Notice  if you substitu the value of x = 17,20 in A(t) ; A(t) >0 so we have a minimun at that point

Then dimensions of the poster

p = 17,20 + 8  = 25,20 cm

h = 22.32 + 12 =34,32 cm

A(min) = 25,20 *34.32  

A(min) = 864,86 cm²

7 0
3 years ago
how do we set this up in a proportion 15% of $129.00 and let me know what the answer is will give brainlist
Alik [6]

Answer:

The Answer is 19.35

Step-by-step explanation:

1) Write 15% as a fraction Then turn it into a decimal

15/100=0.15

2) then Just Multiply 0.15 by 129

0.15 x 129 = 19.35

That is How you do it.

Hopes this helps!

6 0
3 years ago
Read 2 more answers
What are the positive and negative square roots of 169?????
Pachacha [2.7K]

Answer:

-13

13

Step-by-step explanation:

Find the square root of the number 169 and use the positive and negative forms.

7 0
3 years ago
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Whats ten plus five minus 5 times 4
murzikaleks [220]
-5 is your answer :)
8 0
3 years ago
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HELP HELP <br> PLZ I WILL MARK YOU BRILL
Nikitich [7]

Answer:

1) 55 2)60-80 3)95 4)92.5(mean), 92.5 (median), 95 (mode) 5) the outlier greatly offsets the data as it is no where near the other data points.

Step-by-step explanation:

4 0
3 years ago
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