Using the SUBSTITUTION method, Vito is solving the following system of equations algebraically: y = -3x - 4 AND 2x - 3y = -21 *

Which equivalent equation could Vito use?
1) 2-3x - 4) + 3x = -21
2) 2(3x – 4) + 3x = -21
3) 2x-3-3x - 4) = -21
4) 2x - 3(2x - 4) = -21

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

leave feedback if u need : )