Equation 1: y = -2x + 1
Equation 2: y = 2x - 3
Since both equations already have y isolated, we are able to simply set the right side of both equations equal to each other. Since we know that the value of y must be the same, we can do this.
-2x + 1 = 2x - 3
1 = 4x - 3
4 = 4x
x = 1
Then, we need to plug our value of x back into either of the original two equations and solve for y. I will be plugging x back into equation 2 above.
y = 2x - 3
y = 2(1) - 3
y = 2 - 3
y = -1
Hope this helps!! :)
(180-144)° + 3x + 90° = 180°
36 + 3x + 90° = 180°
x = 18°
Răspuns:
64 cm
Explicație pas cu pas:
Perimetrul fiecărei margini a unui cub:
4 * lungime laterală
Lungime laterală = 16cm
Prin urmare, perimetrul va fi:
4 * 16cm
= 64cm
