From the given series:
<span>15/100,3/10,45/100,6/10,75/100
The common difference=3/10-15/100=3/20
Th e first term 15/100
thus the series is an arithmetic series which follows a general explicit formula of:
an=a+(n-1)d
thus plugging in our values,we obtain explicit formula for the series as:
an=15/100+(n-1)3/20
an=3/20n
Thus the answer is: 3/20n</span>
Answer:
84
Step-by-step explanation:
Make a proportion
We know that 63 divide by a number has to equal 75%
63/x=75/100
Cross multiply
75x=6300
Divide by 75 on both sides
x=84
So , his deck has 84 wooden boards
Hope this helps! :)
I: a triangle has a total of 180 degrees. So, we can find the other angle in the triangle by subtracting 180-110= 70 degrees. A straight line has a total of 180 degrees, also. So we can set up another equation that says 180=2m+70. When we simplify, we get 110=2m. Solve, and we get m=55.
J: we can do the same thing in reverse. A straight line has 180 degrees. So we can find the unlabeled angle in the triangle by solving 180=120+a. a=60. Then, we also know that the sum of the angles in the triangle is 180. So, we can set up the equation 180=60+5x. Subtract 60 from both sides and get 120 is 5x. Divide by x, and you get x=24.
Y=-3+3x. You get this answer for y because you move all terms to the right that don’t contain y, and then you solve.