<span>A system of equations has infinitely many solutions when the two
lines representing the equations coincide. i.e. the two equations are
the same or a multiple of each other.
2y - 4x = 6
2y = 4x + 6
2y = 2(2x + 3)
y = 2x + 3
-y = -(2x + 3)
-y = -2x - 3
Hence the other equation is -y = -2x - 3</span>
So hmm notice the picture below
that's the 30-60-90 rule, notice your triangle, the bottom-left-angle is a right angle, 90°, the angle atop is 30°, so the angle on the bottom-right has to be 60°, thus is a 30-60-90 triangle, and as you can see on the triangle on the left in the picture, those are the ratios for it
so 8 will be x, what is the longer leg or side in yours then? well, is
Answer:
25%
I cannot really describe how I did it but I am pretty sure it is correct.
Answer:
35.5
Step-by-step explanation:
H, A
Cos=A/H
Cos 65= 15/x
x=15/cos 65
Answer:
9. x = 16
10. x = 18
Step-by-step explanation:
9. 2x + 9 + 3x + 1 = 90
5x + 10 = 90
5x + 80
x = 16
10. 90 - 53 = 47
2x + 11 = 47
2x = 36
x = 18