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

5 0

3 years ago

Kyle charges 50¢ for a cup of lemonade. Kyle can represent the total sales for the day using the expression 50c. Kyle is thinkin

Sladkaya [172]

I think the answer is B. 75c

4 0

3 years ago

Read 2 more answers

Perfect squares. Solve each equation. Check the solutions. g^2+2/3g+1/9=0

Yakvenalex [24]

G^2+2=0,
g^2=-2
g= sqrt-2, not possible.
3g+1=0
3g=-1
g=-1/3
9 cannot be equal to zero for the last one.

6 0

3 years ago

Help me on this thanks

g100num [7]

The answer here is C.

Explanation:
24 feet / 10 inches = 28.8
Then take 60 feet and divide 28.8 by it:
2.08 feet
Then convert 2.08 ft to inches: 24.96 inches

8 0

3 years ago