$\left\{\begin{array}{ccc}x+2y=4&\text{multiply both sides by 5}\\4x-5y=42&\text{multiply both sides by 2}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}5x+10y=20\\8x-10y=84\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad13x=104\qquad\text{divide both sides by 13}\\\\\boxed{x=8}\\\\Answer:\ \boxed{\boxed{x=8}}$

5 0

2 years ago

A builder is building 5 new homes. Each home has a foyer measuring 9 feet by 18 feet. Laminate flooring for each foyer costs $26

telo118 [61]

Answer:

Step-by-step explanation:

just multiply 26.91 to what ever 9 times 18 is and then multiply that annswer to 5

6 0

3 years ago

Read 2 more answers

Each week, Stephanie is paid a $180 base salary and a 3% commission on her total sales generated for the week. Which expression

prisoha [69]

The expression that represents her weekly income is:
180 + 0.03w

8 0

2 years ago

emmasim [6.3K]

Answer:

The answer is B

Step-by-step explanation:

hope this helps

5 0

2 years ago