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Solnce55 [7]
2 years ago
8

Why is the opposite of a number also called the additive inverse

Mathematics
1 answer:
lana66690 [7]2 years ago
7 0
<span>This </span>number<span> is </span>also<span> known as the </span>opposite<span> (</span>number<span>), sign change, and negation. For a real </span>number<span>, it reverses its sign: the </span>opposite<span> to a positive </span>number<span> is negative, and the </span>opposite<span> to a negative </span>number<span> is positive. Zero is the </span>additive inverse<span> of itself.</span>
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Which expression is equivalent to (x^2 -8) - (-2x^2+4)?​
Phoenix [80]

Answer:

D) 3x^2 - 12

Step-by-step explanation:

Using PEMDAS;

There is no need to evaluate the part of the equation (x^2 - 8) because is no need to, as it is already in its simplest form.

We must evaluate the part of the equation continuing with, "- (-2x^2+4)," as it is not in its simplest form.

Evaluating "- (-2x^2+4)":

Step 1: Distributing the negative

Once distributing the negative symbol amongst the values within the parenthesis according to PEMDAS, we get "2x^2 - 4" as the product.

Step 2: Consider the rest of the equation to evaluate

Since the part of the equation is still in play here as it is a part of the original equation to be solved, we must evaluate it as a whole to get the final answer.

Thus,

x^2 -8 + 2x^2 - 4 = ___

*we can remove the parenthesis as it has no purpose, since it makes no difference.

Evaluating for the answer, we get,

x^2+2x^2 + (-8 - 4) = 3x^2 - 12

Hence, the answer is D) 3x^2 - 12.

3 0
3 years ago
Write an expression that I’d equivalent to 1/2a - 4. URGENT, LIMITED TIME.
SCORPION-xisa [38]

Answer:

1/2(a-4)

Step-by-step explanation:

first blank is 1/2 and second is 4.

7 0
2 years ago
Write 2 9/10 as an improper fraction.<br><br>pls hurry!<br>and pls explain how to do it
stellarik [79]

Answer:

29/10

Step-by-step explanation:

4 0
3 years ago
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A grain is a measure of weight equal to 0.06 gram. An aspirin tablet
andre [41]

Answer:

300 milligrams

Step-by-step explanation:

You find the answer in grams which is 0.3 then you convert it to milligrams

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The numerator of a fraction is 6. Which of the following could be the denominator of the fraction so that it is already in lowes
bogdanovich [222]

Answer:

19, because it wouldn't be close to becoming a whole.

Step-by-step explanation:

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