3 years ago

A-2b= -10 for b plsssss helpppp

Mathematics

1 answer:

Artyom0805 [142]3 years ago

5 0

A-2b=-10
b=-10-a.
Hope this is the answer
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Answer:

$\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.$

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

x = number of nickels in the student's pocket

y = number of dimes in the student's pocket

Each nickel has a value of $0.05, so x nickels have a value of 0.05x

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The student has a total of 10 coins, thus:

$x+y=10$

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$0.05x+0.10y=0.85$

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$\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.$

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