$xy=18\\
\dfrac{x}{y}=2\\\\
xy=18\\
x=2y\\\\
2y\cdot y=18\\
2y^2=18\\
y^2=9\\
y=-3 \vee y=3\\\\
x=2\cdot (-3) \vee x=2\cdot 3\\
x=-6 \vee x=6\\\\
\boxed{(x,y)=\{(-6,-3),(6,3)\}}$

4 0

4 years ago

A collection of quarters and nickels is worth $3.70. There are 22 coins in all. How many of each coin are there?

ladessa [460]

9 numbers of nickels

13 numbers of quarters

3 0

3 years ago

PLZ HELPPPPPPPPPP<br>IT UA DUE IN 30 MINUTES

LenKa [72]

Answer:

yes

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the x-intercept of the graph 4x-6y=12

kap26 [50]

Answer

x=3 or (3,0) and if you need it y=-2x+3

Step-by-step explanation:

I'm not very good at explaining things, sorry

4 0

3 years ago