A.) Simplifying the equation would lead you to 15x^2-3x+9
b.) You know your answer is correct because you're adding the two polynomials together. 9x^2+6x^2 is 1tx^2. Now you have 2x-5x and since the negative is bigger, you get -3x. Then 5+4 is 9. You have no like terms therefore your answer is 15x^2-3x+9
Answer: the plus sign
Step-by-step explanation:
Answer:
A triangle is 180 degrees. Imagine that two angles would be given as maybe 89 and 30 degrees. With these two angles already given you can find the last third angle by adding the 2 given angles and subtracting it from 180. There fore it would look like 180-119=61. 61 would be your unknown angle degree.
<u>If you meant something else please comment I will help you more.</u>
Amy is constructing an equilateral triangle. it's she joins the centers of the 2 circles to the point of intersection she will be done
option a
Answer:
First term of the sequence is 
Step-by-step explanation:
Let 
be the first term and 
be the common difference
We have
The sum of the second term and the ninth term of an arithmetic sequence is 
The sum of the third and fourth terms of the same sequence is 
eqn 1 - eq2
Substituting in eqn 1
First term of the sequence is
