They want you to combine the variables. So
−12x4 + 7x3 + 6x4 − 2x3 =
<span>5x3 − 6x4
</span>So you combine the coefficients, not the variable number, for instance -12+6=-6, and then you simply put the variable in the same place it was. You don't do anything else with it except what I just showed you : )
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Answer:
I think it would be D...
Step-by-step explanation:
I think it would be D because whenever I put it in my calculator, and I do second trace and input -1 for my x value, it comes up 7.1666667. Also, I'm pretty sure for something to be perpendicular, there cannot be a curve and they have to intersect.
Answer: A coefficient is simply a variable that has a number with it. For example 2y has a coefficient. The coefficient is 2 because you will multiply 2 by y.
A coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
<span>100-6r=160-10r
Add 10r to both sides
100+4r=160
Subtract 100 from 160
4r=60
Divide 60 by 4
Final Answer: 15</span>