Answer:
x = 1, y = 2
Step-by-step explanation:
x + y = 3 => 2x + 2y = 6
2x + 3y = 7
-)2x + 2y = 6
=> y = 1, x = 2
Answer:
30
Step-by-step explanation:
IJ/HK = IG/HG = 2
IJ/HK = (v+30)/v = 2
v + 30 = 2v
v = 30
Cosine of an angle is the adjacent leg divided by the hypotenuse.
So cos(60) = a / 12
I'm going to assume it's your last option because it's not in the picture.
1. x.x=7.7 (nhân chéo)
<=>x^2 = 49
<=>x = 7
2. x= 31/40
3+1 equals 4 since we know that x is losing candidate votes. 3x is winning 3x+x=4x 1000/4=250
250 times 3 is 750, which means that the winning candidate got 750 votes