Answer:
A. Arithmetic; d = 1.5
Step-by-step explanation:
-4, -2.5, -1, 0.5, 2
Looking at the sequence, we can see that the numbers increase. This means our common ration or difference will be positive.
Let's look at common ratios first.
To find the common ratio, divide one term from the term after it.
r = a₂ ÷ a₁
r = -2.5 / -4
Divide.
r = 0.625
To see if this is the common ratio, we want to test this with the other numbers of the sequence.
r = a₃ ÷ a₂
r = -1 / -2.5
r = 0.4
This is not consistent; therefore our sequence is not geometric.
Let's look at common differences next.
To find the common ratio, subtract one term from the term after it.
r = a₂ - a₁
r = -2.5 - (-4)
Simplify.
r = -2.5 + 4
Add.
r = 1.5
To see if this is the common difference, we want to test this with the other numbers of the sequence.
r = a₃ - a₂
r = -1 - (-2.5)
Simplify.
r = -1 + 2.5
r = 1.5
This is consistent; therefore we have found our common difference of this arithmetic sequence.
A. Arithmetic; d = 1.5
Hope this helps!
I think that each time, the numbers are being added by 6.
-15,-9,-3,3,9
I'm pretty sure that this should be the correct answer
Answer:
0.2 g/mL
Step-by-step explanation:
Density is equal to the mass of substance divided by its volume.
This problem is a little tricky because you have both "sum of" and "quotient of" which both require you to place the symbol where the word "and" is located.
So, just ask yourself What am I doing the quotient of? What am I doing the sum of?
quotient of a number and 3 →
sum of that quotient and 8 →
is → =
2 Step Equation: