First add the 8 to both sides, canceling out the 8 in the right and adding it to the 19 on the left, making it 27. Multiplying undoes division so, After that, multiply by three on both sides, canceling out the three on the right and multiply 27 by 3, making it 81.
From eqn 3,
2z = 10
z = 5
Substitute z = 5 into eqn 1&2
x + 2y + 5 = 9
x + 2y = 4
x - y + 3(5) = 13
x - y = -2
Eqn 1 - eqn 2:
x + 2y - (x - y) = 4 - (-2)
3y = 6
y = 2
Substitute y = 2 into eqn 1
x + 2(2) = 4
x = 0
Thus, x = 0, y = 2, z = 5 (option 3)
Answer:
a = ln (2b)
Step-by-step explanation:
2e^a =4b
Divide each side by 2
2/2 e^a =4/2b
e^a = 2b
Take the natural log of each side
ln(e^a) = ln(2b)
a = ln (2b)
Answer:
(-2,1)
Step-by-step explanation:
Rectangle has same lengths and same width so its (-2,1)
x= -2 y=1
Answer:
1. 
2. 
Step-by-step explanation:
1. Just subtract them. (To subtract easier, ignore the variables and subtract regularly. When you're done go back and put the variables back in)
2. Foil
