Answer:
5
Step-by-step explanation:
The nth term of a geometric series is:
a_n = a₁ (r)^(n-1)
where a₁ is the first term and r is the common ratio.
Here, we have:
40 = a₁ (r)^(4-1)
160 = a₁ (r)^(6-1)
40 = a₁ (r)^3
160 = a₁ (r)^5
If we divide the two equations:
4 = r^2
r = 2
Now substitute into either equation to find a₁:
40 = a₁ (2)^3
40 = 8 a₁
a₁ = 5
Answer:
Step-by-step explanation:
triangle: a+b>c. If two lengths are put together, and equals more than the length of the third side, then it's a triangle
right triangle: a2+b2=c2 if the square of the two lengths equal the square of the third, then it's a right triangle
acute triangle: a2+b2>c2 if the square of the two lengths are greater than the square of the third it's acute
obtuse triangle:a2+b2<c2 if the square of the two lengths are less than the square of the third it's obtuse
the value of the car will be 3250 after 5 years
Step-by-step explanation:
the value of the car = 13000
rate of interest = 15%
time = 5 years
in 5 years the car will depreciates = 13000 X 15% X 5
=
= 9750
after 5 years the value of the car is = 13000 - 9750 = 3250
Answer:
-8/3
Step-by-step explanation:
Answer: j = -0.45
Step-by-step explanation:
2.25 – 11j – 7.75 +1.5j = 0.5j – 1
We can group similar terms:
-11j +1.5j -0.5j = -1 - 2.25 + 7.75
-10j = 4.5
j = 4.5/-10
j = -0.45
Answer: j = -0.45
<h2><em>Spymore</em></h2>
