Answer:
Based off of the problem, the answer would most likely be A.
Step-by-step explanation:
Answer:
x = 2
Step-by-step explanation:
2(x+4)=12
2x+8=12........multiplying each number in the bracket by 2
2x = 12-8
2x = 4...... dividing both sides by 2
x = 2
Six can be divided by two.
(I dont really get what you are asking lol)
C.
By plugging in the numbers into the equation, 8 = 250(k), we can determine that 8 ÷ 250 = 0.032.
Answer:
a. an = -1 • 4^(n - 1)
Step-by-step explanation:
It's easy see that each term is multiplied by 4 to get the next term, so the common ratio will be 4, that reduces the choices to answers A and B (since C and D use -1 as common ratio). Also, normally a geometric progression uses "n-1", so we'll first try with A to see if it works.
a1 = (-1) * 4^0 = -1 * 1 = -1
a2 = (-1) * 4^1 = -1 * 4 = -4
a3 = (-1) * 4^2 = -1 * 16 = -16
Yes, it works... so the answer is an = -1 • 4^(n - 1)
