The first term in our arithmetic sequence = 13
The common difference of our arithmetic sequence = 17 - 13 = 4
The formula for finding an equation for any arithmetic sequence is a(n) = A + B(n - 1)
A = the first term
B = the common difference.
Let's plug our numbers in.
a(n) = 13 + 4(n - 1)
Let's check to make sure we're correct.
a(1) = 13 + 4(1 - 1) = 13 + 4(0) = 13 + 0 = 13
a(2) = 13 + 4(2 - 1) = 13 + 4(1) = 13 + 4 = 17
That verifies that our formula is correct.
In conclusion,
a(n) = 13 + 4(n - 1)
<span>So we want to know the number from which we take 65% and get 39. If the number we are looking for is x, then the equation to find that x would be: (65/100)*x=39 which says sixty five percent out of x is equal 39. So, x=(39*100)/65. And finally, x= 3900/65=60. So, 65% out of 60 is 39.</span>
Answer:
m∡5 = 71°
Step-by-step explanation:
m∡8 = m∡6
m∡6 + m∡5 = 180
180 - m∡6 = m∡5
180 - 109 = 71
Step-by-step explanation:
The formulae to find them are:
- arithmetic mean in individual series = sum x/N
- arithmetic mean in discrete data= sum fx/N
- arithmetic mean in continuous data= sum fm/N
and mode= number of greatest frequency.
(note; f is frequency, N is number of data and x is x is the raw data)
<em><u>hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>