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2 years ago

You find one quarter, two dimes, and two nickels.

Mathematics

2 answers:

Elis [28]2 years ago

8 0

Answer:

Step-by-step explanation:

one quater equals 25cents

two dimes equals 20 cents

two nickles equals 10 cents

if you add all together you get 0.55 cents

0.55 as a fraction is 11/20

vitfil [10]2 years ago

5 0

Answer:

a: 0.55

b:11/20

Step-by-step explanation:

hope this helps

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Step-by-step explanation:

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HELP ME PLEASE!!!!!!

AlexFokin [52]

Answer:

There ya go

Step-by-step explanation:

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3 years ago

Can't figure it out!!

Zanzabum

$\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}\\\\
-------------------------------\\\\
f(x)= \cfrac{1}{x} \qquad 
\begin{cases}
x_1=2\\
x_2=b
\end{cases}\implies \cfrac{f(b)-f(2)}{b-2}=-\cfrac{1}{10}
\\\\\\
\cfrac{\frac{1}{b}-\frac{1}{2}}{b-2}=-\cfrac{1}{10}\implies 
\cfrac{\frac{2-b}{2b}}{b-2}=-\cfrac{1}{10}\implies \cfrac{2-b}{2b}=-\cfrac{b-2}{10}
\\\\\\
$

$\bf \cfrac{2-b}{2b}=\cfrac{2-b}{10}\implies 20-10b=4b-2b^2\impliedby cross-multiplying
\\\\\\
2b^2-4b-10b+20=0\implies 2b^2-14b+20=0
\\\\\\
b^2-7b+10=0\implies 
(b-2)(b-5)=0\implies b=
\begin{cases}
\boxed{5}\\
2
\end{cases}$

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2 years ago