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gaku9123
21.05.2020 •
Mathematics
Aaron bought a set of plastic ice cubes with a mixture of water and air inside. 2 rectangular pyramids are stacked on the bases. The pyramid has a rectangular base of 15 millimeters by 20 millimeters, and a height of 30 millimeters. What volume of water and air is inside each of the plastic ice cubes? 1,500 millimeters cubed 3,000 millimeters cubed 4,500 millimeters cubed 6,000 millimeters cubed
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Ответ:
Explanation:
Before we begin, remember the following:
(-ve) * (-ve) = +ve
(-ve) * (+ve) = -ve
(+ve) * (+ve) = +ve
(+ve) * (-ve) = -ve
Now, for the given we have:
(12x³ + 7x + 3) - (3x⁷ + 4x)
First, we will get rid of the brackets based on the above rules. Thsi will give us:
12x³ + 7x + 3 - 3x⁷ - 4x
Now, we will combine like terms as follows:
12x³ + (7-4) x + 3 - 3x⁷
This will give us the final expression:
-3x⁷ + 12x³ + 3x + 3
Hope this helps :)