Answer: 
and 
Step-by-step explanation:
To solve the system of equations with the linear combination method, you must:
- Arrange the equations in a colum.
- Make one of the set of terms, with equal variables, opposite in signs but equal in coefficients.
- Add both equations to cancel out that set of terms.
- Solve for the the variable left.
- Substitute the value of that variable into one of the original equations and solve for the other variable to find its value.
As you can see, the first equation of the system of equations given in the problem, does not have the variable 
, so you can't apply the proccedure shown above. Then, to solve it you must:
-Solve for 
in the first equation:
- Substitute the value obtained into the second equation and solve for , then:
Therefore:
and
Answer:
2x+3y+5=0
a = 2 b = 3 c=5
Step-by-step explanation:
We are asked to express 2x+3y=-5 in the form ax+by+c=0
Add 5 to both sides
2x+3y+5=0
We can now find the values of a, b and c now that the equation is in standard form.
2.33 is the aprox number we start off with. if we got to find the original, we divide 560 by (7/3).
after we estimate the divisior we get 240. 560 - 240 gives us 320.
the answer could be 320.
Answer:
a) 77.3-73/10.7= 0.40187
b) 62.9-66.8/10.8= -0.36111
c) Kylie did relatively better
Step-by-step explanation:
Answer:Coupon B gives the lower price. The price of coupon B is $4.4 less than the price of coupon A.
Step-by-step explanation:
