Simultaneous equations:
x+3y = 7 ---- (1)
2x+4y = 81 --- (2)
From eqn (1)
x = 7-3y ---- (3)
Substituting for x in eqn (2)
2(7-3y)+4y = 81
14-6y+4y = 81
14-2y = 81
-2y = 81 - 14 = 67
-2y = 67
y = 67/-2 = -33.5
And then, from eqn (3);
x = 7-3y = 7-3(-33.5) = 7-100.5 = -93.5
The solution for the system of equations is;
x = -93.5
y = -33.5
Answer:
It might be the fourth one
Answer:
in some ways it can be very addictive due to all the content on the internet what is no to love.
Explanation:
that can be an intro sentence
There is a conflict between rumor and reality in this excerpt.
On one hand, we have the rumor - that Nick became engaged to someone, and everybody heard it was true. However, on the other hand, we have the reality - that he in fact is not engaged, thus the whole story is just a gossip rather than something that actually happened.
C) Being inexpensive is the main purpose
