HELP PLEASE 100 POINTS WILL MARK BRAINLIEST
2 answers:
Substitution is where you solve for one of the variables and then plug that in for the same variable in the other equation. Here, there is already an equation that is solved for a variable, 
. So we can plug in '4x - 11' for 'y' in the other equation:
Distribute 5 into the parenthesis(multiply it to every term in the parenthesis):
Your answer is C.
Distribute 5 into the parenthesis(multiply it to every term in the parenthesis):
Your answer is C.
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Answer:
x = -2.9
y = 2.6
x+y = -2.9+2.6
= -0.3
Answer:
Choice C is correct
Step-by-step explanation:
The first step is to re-write the equations in exponential form.
The first equation can be written as;
since the base is 10 and 4 the exponent.
The second equation can be written as;
The second step is to make N the subject of the formula in both equations.
Solving for N from this equation , yields;
Solving for N from the second equation , yields;
Therefore;