Answer:
Final answer is 
.
Step-by-step explanation:
We have been given an infinite geometric series.
Now we need to find it's sum.
common ratio 
.
plug n=1 to get the first term
Now plug these values into infinite sum formula
Hence final answer is .
This sample size it too small. The larger the sample size, the more likely the data will be true to what the question is asking. A larger sample size brings more precision to the question that is being asked.
Answer:
V=64
Step-by-step explanation:
What you do is go based off the volume formula of a cube which is V=a^3.
You have a side length of 4.
V=4^3.
V=64.
First let's find the angles a and b.
We have then:
sin a = 4/5
a = Asin (4/5)
a = 53.13 degrees.
cos b = 5/13
b = Acos5 / 13
b = 67.38 degrees.
We now calculate cos (a + b). To do this, we replace the previously found values:
cos ((53.13) + (67.38)) = - 0.507688738
Answer:
-0.507688738
Note: there is another way to solve the problem using trigonometric identities.
Answer:
8/20= 4/5
25/60= 5/12
Step-by-step explanation:
8÷4
