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2 years ago

To add integers with the same sign

Mathematics

2 answers:

Mariana [72]2 years ago

5 0

Arithmetic

-3-2=5

because

-3-2

-3 + -2

3 negatives + 2 negatives = 5 negatives

taurus [48]2 years ago

4 0

-3-2 pretty sure that’s the answer

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Given $f(x) = x^2 + 6x + 9, g(x) = x^2 - 9$ :

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2 years ago

What is the ratio of x to y?

abruzzese [7]

$\frac{3}{2} = \frac{2x}{2x+y}$

From any proportion, we get another proportion by inverting the extremes (or the means):

$\frac{2x+y}{2} = \frac{2x}{3}$ = k

so we have:

2x=3k
2x+y=2k therefore:
3k+y=2k
y= - k

x= $\frac{3}{2} k$

$\frac{x}{y}$ = - $\frac{3}{2}$

The corect answer is A. -3/2

or:

$\frac{3}{2} = \frac{2x}{2x+y}$

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$\frac{2x+y}{2x} = \frac{2}{3}$

We use a property of proportions:

$\frac{a}{b} = \frac{c}{d}$ where a, d are extremes and b,c are means and the product of the extremes equals the product of the means (a*d=b*c),

so we have

$\frac{a-b}{b} = \frac{c-d}{d}$ or

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$\frac{y}{2x} = \frac{-1}{3}$

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