Answer:
<h2><u><em>
12</em></u></h2>
Step-by-step explanation:
y = 5
y + 10x = 125
5 + 10x= 125
10x = 120
x = 12
Answer:
y = 5
Step-by-step explanation:
22.5(10-y)+27.5y=250

Combind like terms,

Subtract 225 from both equations to isolate the variable.

Divide both sides by 5 to isolate the variable and solve it.

Answer:
A. Wavelength
Step-by-step explanation:
I calculated it logically
It’s c both are parallel to each other meaning they don’t intercept