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3 years ago

Which statements about opposites are true? Select each correct answer.

Mathematics

1 answer:

____ [38]3 years ago

7 0

Answer:

(a) TRUE

(b) TRUE

(c) FALSE

(d) TRUE

Step-by-step explanation:

" The "opposite" of any number is also known as it's " additive inverse" i.e. for any number 'a' the additive inverse is 'a' ".

(a) TRUE

Since let us consider any negative number '-5' then it's opposite is '5' since (-5)+5=0

(b) TRUE

this could be seen clearly from the number line.

(c) FALSE

this statement is false since we can take example of zero.

the opposite of zero is 0 but 0×0≠1.

(d) TRUE

since 0-0=0.Step-by-step explanation:

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Given the graph below, which of the following best explains the range of the equation?

Travka [436]

Answer:

y 0, because the function comes close to zero but never touches it and goes infinitely in the positive direction.

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3 years ago

Mark uses 19 gallons of gas while traveling 399

Ket [755]

Answer:

189

Step-by-step explanation:

If mark uses 19 gallons to travel 399 miles, that means he was able to travel 21 miles per gallon.

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3 years ago

What is the result of subtracting the second equation from the first?<br> -2x+y=0<br> 7x+3y=2

ikadub [295]

Answer:

5x -2y = -2

Step-by-step explanation:

-2x+y=0

-7x+3y=2

Subtract the second equation from the first

-2x+y=0

7x-3y=-2

------------------

5x -2y = -2

4 0

3 years ago

Unit sales for new product ABC have varied in the first seven months of this year as follows: Month Jan Feb Mar Apr May Jun Jul

Alecsey [184]

Answer:

$\sigma = 121.53$

Step-by-step explanation:

Required

The population standard deviation

First, calculate the population mean

$\mu = \frac{\sum x}{n}$

This gives:

$\mu = \frac{148+ 329+ 491 +167+ 228+285+ 441}{7}$

$\mu = \frac{2089}{7}$

$\mu = 298.43$

The population standard deviation is:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n}}$

So, we have:

$\sigma = \sqrt{\frac{(148 - 298.43)^2 + ..........+ (441- 298.43)^2}{7}}$

$\sigma = \sqrt{\frac{103387.7143}{7}}$

$\sigma = \sqrt{14769.6734714}$

$\sigma = 121.53$

8 0

3 years ago

This bc it’s really really really hard and I can’t figure it out

Ket [755]

Answer:

-4/5

Step-by-step explanation:

3/5+(-7/5)

-4/5

5 0

2 years ago