<h3>
Answer:</h3>
Explanation:
Given expression: (ab)x^2 + (b^2 - ac)x + (-bc) = 0
Here given:
Apply quadratic formula:
Insert values:
I’m pretty sure this prom or will always equal error but I do not know yet I will keep trying and get back to you if I find it
Answer:
The 27th term is 73.5.
Step-by-step explanation:
We want to find the 27th term of the arithmetic sequence:
15, 17.25, 19.5, 21.75, ...
We can write a direct formula. Recall that the direct formula for an arithmetic sequence is given by:
Where <em>a</em> is the initial term and <em>d</em> is the common difference.
From the sequence, we can see that our initial term <em>a</em> is 15.
To find the common difference, subtract a term and its previous term. Thus, the common difference will be:
Thus, our direct formula is:
To find the 27th term, let <em>n</em> = 27. Substitute and evaluate:
Thus, the 27th term is 73.5.
Answer:
D
Step-by-step explanation:
Let's simplify step-by-step.
2
z
−
4
−
z
=
2
z
+
−
4
+
−
z
Combine Like Terms:
=
2
z
+
−
4
+
−
z
=
(
2
z
+
−
z
)
+
(
−
4
)
=
z
+
−
4