Answer:
3x^2+6x-2
Step-by-step explanation:
(5x2 + 4x + 3) - (2x2 - 2x + 5)
5x^2+4x+3-2x^2+2x-5
3x^2+6x-2
The number of bottles in a full box is 12.
<u><em>Explanation</em></u>
Suppose, the number of bottles in a full box is 
So, the number of bottles in <u>three</u> full boxes 
Now, two more boxes are added, both of which have <u>one fewer bottle than the other three</u>. So, the number of bottles in these two boxes 
As there were 9 bottles initially and now there are 67 bottles in the fridge, <em><u>so the equation will be</u></em>....

Thus, the number of bottles in a full box is 12.
170 cm. The unknown length on the left is 21 cm
Answer:
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Step-by-step explanation:
<em>Your question is incomplete without an attachment (See attachment)</em>
Required
Determine the area of the shaded part
From the attachment;
<em>Assume that the shaded portion is closed to the right;</em>
<em>Calculate the Area:</em>
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<em>Next;</em>
<em>Calculate the Area of the imaginary triangle (on the right)</em>
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<em>Lastly, calculate the Area of the Shaded Part</em>
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<em>Hence,</em>
<em>The area of the shaded part is 72in²</em>
Answer:
Square root of 30 is irrational because the answer is a non-terminating decimal.
4/7 is rational because it is a fraction.
21 divided by the square root of 4 is irrational because the result is a non-terminating decimal.
Pi is irrational because it's a non-terminating decimal.
-27 is rational because rational numbers can be positive or negative.
I hope this is correct! :-)