Answer:
x = 5
Step-by-step explanation:
4x + 2y + z = 24
2x - 3y - z = 2
5x + y + 2z = 21
-----------------
Eliminate z
Add the 1st and 2nd eqn
4x + 2y + z = 24
2x - 3y - z = 2
----------------
6x - 1y = 26 eqn A
Multiply the 2nd eqn by 2, then add the 3rd.
4x - 6y -2z = 4
5x + y + 2z = 21
----------------
9x - 5y = 25 eqn B
---------------
Now you have 2 eqns in 2 unknowns, not 3.
Multiply eqn A by 5 and subtract eqn B.
30x - 5y = 130 eqn A times 5
9x - 5y = 25 eqn B
-------------
21x = 105
x = 5
Answer:
2
Step-by-step explanation:
15+12=27
54 / 27 = 2
10. d = 20
11. w = 22
12. z = 8
13. idk
14. p = - 8
send me a message or something if this helps ; )
Answer:
12.5%
Step-by-step explanation:
% increase = (new value - initial value)/initial value x 100
= (90-80)/80 x 100
=10/80 x 100
= 12.5%
Answer:
Point-slope form equation line

Slope-intercept form is:

Step-by-step explanation:
Point-slope form equation line passing through points 
Slope = m =
slope-intercept form is:
y = mx +c
where : c = intercept of on axis

Equation of line passing through (-2,3) and (3,0).


Point-slope form equation line

For slope-intercept form open the brackets of Point-slope form equation l:

So, the slope-intercept form is:
