Answer:
D. -2n - 6 = 9
Step-by-step explanation:
The first step you have to do is the distributive property in the given equation. So, you multiply n and 3 by -2. The resulting equation is -2n - 6 = 9.
Answer is C...Use calculator
Move the 6 to the other side:
2x^2 +x+6,
(x-3) (x+4)
x=3 and x=-4
Answer:
The nth term formula is as follows:
where the first phrase is a
n is the term's number.
The common difference is denoted by the letter d.
Step-by-step explanation:
If two line crosses, then the vertical angles are the angles opposite each other. In this way, these angles share the same vertex. So, the vertical angles are always equal. Therefore, in this problem, the right answers are:
1. ABE and CBD
Notice that the vertex is B, so these two angles share the same vertex. Accordingly, these two angles are vertical angles.
2. ABC and EBD
The same reasoning is applied here. The vertex is also B. Notice that <em>the angles CBD and ABD add up to 180 degrees. </em>
