Step-by-step explanation:
multiply 5x+2y=19 by 3 youll get 15x+6y=57
eliminate y
7x-6y=9
<u>15x+6y=57</u><u> </u> +
22x=66
x=3
substitute x to 5x+2y=19
15+2y=19
2y=4
y=2
The difference of the helicopter and the submarine being 18.5 meters makes 18.5+-7.75=10.75
<h2>
Answer:</h2><h2>D. 4b + 6</h2><h2 /><h2>Hope this helps!!</h2>
17- I got it I used my brain not Brainly
