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natulia [17]
3 years ago
7

PLEASE HELP HURRY HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
kompoz [17]3 years ago
7 0
The answer is C.) perpendicular


valkas [14]3 years ago
5 0
C perpendicular angles
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zvonat [6]

Answer: 46x^2+73x+15

Step-by-step explanation:

The area of a rectangle can be calculated with the formula:

A=lw

l: the length of the rectangle.

w: the width of the rectangle.

The area of the remaning wall after the mural has been painted, will be the difference of the area of the wall and the area of the mural.

Knowing that the dimensions of the wall are (6x+7) by (8x+5), its area is:

A_w=(6x+7)(8x+5)\\\\A_w=48x^2+30x+56x+35\\\\A_w=48x^2+86x+35

As they are planning that the dimensions of the mural be (x+4) by (2x+5), its area is:

A_m=(x+4)(2x+5)\\\\A_m=2x^2+5x+8x+20\\\\A_m=2x^2+13x+20

Then the area of the remaining wall after the mural has been painted is:

A_{(remaining)}=A_w-A_m\\\\A_{(remaining)}=48x^2+86x+35-(2x^2+13x+20)\\\\A_{(remaining)}=48x^2+86x+35-2x^2-13x-20\\\\A_{(remaining)}=46x^2+73x+15

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4 years ago
How do you work out the volume of a cube
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emmasim [6.3K]

Answer: 20 i think srry if its wrong

Step-by-step explanation:

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<h3>Answer: Choice C) -\infty < y < 2</h3>

This is a more complicated way to write y < 2

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In interval notation, the answer would be (-\infty, 2) with the curved parenthesis to indicate "do not include y = 2 as part of the range".

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Since 4/9 in decimal form is 0.44444
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Hope this helped!
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