3 years ago

-2, -1, 0,1 Which pair of numbers has a sum of zero?

Mathematics

2 answers:

FromTheMoon [43]3 years ago

8 0

-1 and 1 have the sum of zero

madam [21]3 years ago

6 0

Answer:

-1 and 1

Step-by-step explanation:

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How can this 12×2+2³ make 120

Alex17521 [72]

Step-by-step explanation:

$12\times(2+2^3)\qquad\text{use PEMDAS}\\\\\text{first power}\\\\=12\times(2+8)\\\\\text{next addition in parentheses}\\\\=12\times10=120$

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3 years ago

The expression cosine of pi over 2 times cosine of pi over 3 plus sine of pi over 2 times sine of pi over 3 can be rewritten as

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Solution:

Given;

$\cos\frac{\pi}{2}\cos\frac{\pi}{3}+\sin\frac{\pi}{2}\sin\frac{\pi}{3}$

Using the identities;

Thus;

$\begin{gathered} \cos\frac{\pi}{2}\cos\frac{\pi}{3}+\sin\frac{\pi}{2}\sin\frac{\pi}{3}=\cos(\frac{\pi}{2}-\frac{\pi}{3}) \\ \\ \cos\frac{\pi}{2}\cos\frac{\pi}{3}+\sin\frac{\pi}{2}\sin\frac{\pi}{3}=\cos(\frac{\pi}{6}) \end{gathered}$

CORRECT OPTION: A

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1 year ago

Select the statement that describes this expression: (10 − 3) x 4 + 5.

tankabanditka [31]

Answer:

Multiply 4 by the difference of 10 and 3, then add 5

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3 years ago

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The diameter of a circle is 13 ft. Find its area to the nearest tenth.

PtichkaEL [24]

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weqwewe [10]

Answer:

1,091,291,533,405,608

Step-by-step explanation:

Even because 8 is an even number

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3 years ago