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3 years ago

Subtract -4p^2-9p+11 from p^2-5p+4

Mathematics

2 answers:

alex41 [277]3 years ago

8 0

Answer:

$\large\boxed{5p^2+4p-7}$

Step-by-step explanation:

$(p^2-5p+4)-(-4p^2-9p+11)\\\\=p^2-5p+4-(-4p^2)-(-9p)-11\\\\=p^2-5p+4+4p^2+9p-11\qquad\text{combine like terms}\\\\=(p^2+4p^2)+(-5p+9p)+(4-11)\\\\=5p^2+4p-7$

melisa1 [442]3 years ago

7 0

Answer:

−3p^2+4p−7

Step-by-step explanation:

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Answer:

The correct option is C: the isotope of iodine contains 81 neutrons.

Step-by-step explanation:

The mass (A) of the iodine isotope is given by:

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Where:

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4 years ago

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denis23 [38]

Answer:

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Step-by-step explanation:

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