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Rufina [12.5K]
3 years ago
12

Silver is a white metal and is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does

not react with water but it does react with nitric acid. Silver tarnishes when exposed to air or light. What is a physical property of silver?
Mathematics
2 answers:
sveta [45]3 years ago
7 0
<span>A physical property is that it is a white metal. The other descriptions are all chemcial properties such as how it reacts and conducts. Density could also be another answer as it is also physical.</span>
allochka39001 [22]3 years ago
3 0

density because everything else would fall under the category of chemical properties instead of physical properties and the other 3 properties would result in a chemical change while density would not


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the first four terms in an arithmetic sequence are $x y$, $x - y$, $xy$, and $x/y$, in that order. what is the fifth term?
olga2289 [7]

When the first four terms in an arithmetic sequence are x+y, x-y, xy and x÷y, then the fifth term will be \frac{123}{40}

A sequence of numbers in which every term (except the first term) is obtained by adding a constant number to the previous term is called an arithmetic sequence

In given arithmetic sequence

The first term = x+y

The second term = x-y

Then, the common difference= (x-y)-(x+y)

x-y-x-y= -2y

The third term = x-y+(-2y)

x-y-2y= x-3y

In question third term is given as xy

So both are equal

x-3y=xy

-3y=xy-x

-3y=x(y-1)

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

Similarly fourth term will be

x-3y-2y=x-5y

x-5y=\frac{x}{y}

substitute the value of x  in the equation

\frac{-3y}{y-1}-5y=\frac{\frac{-3y}{y-1} }{y} \\\frac{-3y}{y-1} -5y=\frac{-3}{y-1}\\ -3y-5y(y-1)=-3\\-3y-5y^{2}+5y=-3\\ -5y^{2} +2y+3=0\\5y^{2} -2y-3=0

Split the middle term and factorize it

5y^{2}+3y-5y-3=0\\y(5y+3)-1(5y+3)=0\\

(y-1)(5y+3)=0

y=1,\frac{-3}{5}

y cannot be equal to 1, because the third term and fourth term will become x.

y=\frac{-3}{5}

substitute the value of y in the equation of x
x=\frac{-3y}{y-1} \\=\frac{-3\frac{-3}{5} }{\frac{-3}{5}-1 }\\ =\frac{-9}{8}

The fifth term= \frac{x}{y}+(-2y)=\frac{x}{y} -2y

\frac{\frac{-9}{8} }{\frac{-3}{5} }-2\frac{-3}{5}  =\frac{123}{40}

Hence, when the first four terms in an arithmetic sequence are x+y, x-y, xy and x÷y, then the fifth term will be \frac{123}{40}

Learn more about Arithmetic sequence here

brainly.com/question/15412619

#SPJ4

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2 years ago
Determine the simple interest when: principal: $15,850 interest rate: 3.75%, time: 7 year
Likurg_2 [28]
<h2>$4,160.625</h2>

Step-by-step explanation:

<h3>principle (p) = $15,850</h3><h3>rate (r) = 3.75%</h3><h3>time (t) = 7 years</h3><h3>simple interest = (p × r × t) ÷ 100</h3><h3> = (15850 × 3.75 × 7) ÷ 100</h3><h3> = 416,062.5 ÷ 100</h3><h3> = 4,160.625</h3>

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3 years ago
What is the answer to 27+5×6
Alenkasestr [34]
Refer to BIDMAS.
5*6=30
27+30=57
Your answer is 57.
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Burka [1]

Answer:

-9

Step-by-step explanation:

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3 years ago
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