What part do you have trouble with
Answer:
x = -1, y = 2 and z = 1
Step-by-step explanation:
The given system of equations are :
2x - y + 3z= -1 ....(1)
x + 2y - 4z = -1 ......(2)
y – 2z = 0 .....(3)
Equation (3) can be written as :
y = 2z
Use y = 2z in equation (2)
x + 2(2z) - 4z = -1
x + 4z - 4z = -1
x = -1
Put the value of x in equation (1) :
-2 -y +3z = -1
-y+3z = 1 ....(4)
Adding equation (3) and (4)
y-2z+(-y+3z)=1
z = 1
Now put z = 1 in equation (4)
-y+3=1
-y = -2
y = 2
Hence, the values of x,y and z are -1, 2 and 1 respectively.
ANSWER
EXPLANATION
We want to convert
to improper fraction.
Let us first reduce the fractional part to get;
We now multiply 6 by 18 and add 5 and then express the result over 18.
This will give us;
Answer:
The books cost $28 dollars each.
Step-by-step explanation:
$266 - $14 = $252
then take $252 divided by 9 = $ 28
Answer:
on what's app ?
Step-by-step explanation:
or telegram ?
