X+8y=18
-5x+3y=-4
Multiply the first equation by 5
Add the two equations together
5x+40y=90
-5x+3y=-4
43y=86
Y=2
Plug y into one equation to find x
X+16=18
X=2
Answer:
3960 feet.
Step-by-step explanation:
sin 30 = elevation / hypotenuse
sin 30 = e / 1.5
e = 1.5 * sin 30
e = 1.5 * 0.5 = 0.75 miles
= 0.75 * 5280
= 3960 feet.
The answer is 12 you have to work from in to outside the problem
D.6x^2+3x+3, to find your answer combine like terms. ex: x^2 and 5x^2 have ^2 in common so combine to get 6x^2.