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Sati [7]
2 years ago
10

Name the property. a + b is a real number.*

Mathematics
2 answers:
Eduardwww [97]2 years ago
8 0

Answer:

a + b = b + a   \: \forall \: a,  \: b  \in \:   \R \ \\ a \times b = b \times a\: \forall \: a,  \: b  \in \:   \R \\ (a + b) + c = (b + c) + a\: \forall \: a,  \: b,  \: c,  \in \R \\ (a \times b) \times c = (b \times c) \times a \: \forall \: a,  \: b,  \: c,  \in \R \\a+0=0+a=0 \: \forall \: a,\in \:   \R \\a +b=c\: \forall \: a,  \: b,  \: c,  \in \R

Sati [7]2 years ago
4 0

Answer:

Closure Property of Addition

Step-by-step explanation:

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$700 at 8% for 6 years is...?
uranmaximum [27]
So if it is simple interest then
700+6 times (8% of 700)=answer

percent means partsout of 100
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'of' means mutily
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3 years ago
3(x+6)-2=28 to 3(x+6)=30 associative commutative or distributive
tekilochka [14]

Answer:

associative

Step-by-step explanation:

4 0
3 years ago
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You can buy 20 fluid ounces of shampoo for $4.40 or 24 fluid ounces for $4.80. Which is the better buy? Explain.
lidiya [134]
First you have to do 440 / 20, which is 22 cents per bottle
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6 0
3 years ago
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Write in slope intercept form:<br> (-4,6) slope= -3/4
Hunter-Best [27]

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Step-by-step explanation:

y= -3/4x+3

8 0
3 years ago
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Best answer gets the brainliest!<br> Find $a/b$ when $2\log{(a -2b)} = \log{a} + \log{b}$.
andrey2020 [161]

By some properties of logarithms, rewrite the equation as

2\log(a-2b) = \log(a) + \log(b) \\\\ \log(a-2b)^2 = \log(ab)

so that

(<em>a</em> - 2<em>b</em>)² = <em>ab</em>

Expand the left side:

<em>a</em> ² - 4<em>ab</em> + 4<em>b</em> ² = <em>ab</em>

Rearrange terms to get a quadratic equation in <em>a</em>/<em>b</em> :

<em>a</em> ² - 5<em>ab</em> + 4<em>b</em> ² = 0

<em>b</em> must be greater than 0, otherwise log(<em>b</em>) doesn't exist, and the same goes for <em>a</em>. So we can divide by <em>b</em> ² to get

<em>a</em> ²/<em>b</em> ² - 5<em>a</em>/<em>b</em> + 4 = 0

Factorize and solve for <em>a</em>/<em>b</em> :

(<em>a</em>/<em>b</em> - 4) (<em>a</em>/<em>b</em> - 1) = 0

==>   <em>a</em>/<em>b</em> = 4   or   <em>a</em>/<em>b</em> = 1

However, if <em>a</em>/<em>b</em> = 1, then <em>a</em> = <em>b</em> makes <em>a</em> - 2<em>b</em> = -<em>b</em>. But we must have <em>b</em> > 0, so we omit the second solution and end up with

<em>a</em>/<em>b</em> = 4

5 0
3 years ago
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