x - y + 5z = 3 .... (1)
4x + z = 0
.......(2)
x + 3y + z = -9 .......(3)
From (2) z = -4x, Substitute for z in (1) and (3):-
x - y + 5(-4x) = 3
-19x + y = 3 ......(4)
x + 3y - 4x = -9
-3x + 3y = -9
- x + y = -3 .....(5)
Subtract:- (4) - (5) we get
-18x = 0
x = 0
So z = -4x = 0
Substituting for x and z in equation (3):-
3y = -9
y = -3
Answer is x = 0 , y = -3 and z = 0
Answer:
0 Cookies
Step-by-step explanation:
I ate them all
Answer:
64
Step-by-step explanation:
88-24=64 which is the right answer
Step-by-step explanation:
30% = 3/10
number of sixth grade students = 3/10 × 620
divide by denominator
620 ÷ 10 = 62
multiply by numerator
62 × 3 = 186
Therefore there are 186 sixth grade students
It will be 36 because 6 to the seceand power is 36 and then mines 10 = 26 and 2 to the 5 power is 10 so its 36