$\bf \begin{cases}
2x+2y=10\\
-x+y=1
\end{cases}\\\\
-------------------------------\\\\
-x+y=1\implies y=1+x\impliedby \textit{let's plug that in the first equation}
\\\\\\
2x+2(\stackrel{y}{1+x})=10\implies 2x+2+2x=10\implies 4x=8
\\\\\\
x=\cfrac{8}{4}\implies \boxed{x=2}\impliedby \textit{let's plug that in the second one}
\\\\\\
-(\stackrel{x}{2})+y=1\implies \boxed{y=3}$

7 0

3 years ago

if you put $6.57 into a savings account that earbs 4%, how much interest will you receive at the end of eight years

mezya [45]

$9.02 Hope this helped.

7 0

3 years ago

If the price is 15 and the sales tax is 3%,what is the amount you will have to pay for tax?​

If the price is 15 and the sales tax is 3%,what is the amount you will have to pay for tax?