3 years ago

A number that is multiplied by another number

Mathematics

1 answer:

quester [9]3 years ago

7 0

Hmm what do you mean

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What is -14 divided by -2

Svetradugi [14.3K]

A negative divided by a negative is a positive, so -14/-2 = 7
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Complete the identity

spin [16.1K]

Answer: $cos(\pi-x)=-cos(x)$

Step-by-step explanation:

We need to apply the following identity:

$cos(A - B) = cos A*cos B + sinA*sin B$

Then, applying this, you know that for $cos(\pi-x)$ :

$cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)$

We need to remember that:

$cos(\pi)=-1$ and $sin(\pi)=0$

Therefore, we need to substitute these values into $cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)$ .

Then, you get:

$cos(\pi-x)=(-1)*cos(x)+0*sin(x)$

$cos(\pi-x)=-1cos(x)+0$

$cos(\pi-x)=-cos(x)$

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3 years ago

2/5 of 2/3

Vilka [71]

Answer:

4/15 is your answer my friend

Step-by-step explanation:

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