Okay so the mean is 3, standard deviation is 2.16 and the variance is 4.66.
M-4=84.
The equation is correct because the maple tree is 4 feet shorter than the elm tree. M represent the maple tree, so you take away four to find the elm.
The height of the maple tree is 88 feet.
I have know idea I would just guess if I were you
Explanation
Yep! 7x2=14-15= -1 // answer is a
<span>For a system of equations to have infinitely many solutions, the equations have to be lineary dependent, (i.e. one of the equations is a multiple of the other equation). For the given equation to have infinitely many solutions, the second equation have to be a multiple of the first equation.
The first equation can be rewritten as y - 2x = -5
The second equation is the first equation multiplied by 2, i.e. 2(y - 2x= -5) = 2y - 4x = -10
Therefore, the correct answer is -10 (option a).</span>
