Answer:
Answer is 225.
We have to find the sum of 15 terms of the series
sigma 1 to 15 (2n-1)
This can be split as per summation terms as
sigma 2n - sigma 1
sigma 2n can again be simplified by taking 2 outside
sigma 2n= 2 times sum of natural numbers of 1 to 15
= 2(15)(16)/2= 240
sigma 1= 1+1+...15 times= 15
Hence final answer is
= 2 times sigma n - (n) = 240-15 = 225.
Step-by-step explanation:
So, the dog eats 5 cups a day and 1 pound of dog food is 10.5 cups.
A 50 lb bag is<span> $22.50.
Since you're asking how much it would cost to feed it a day we need to find out how much 1 pound of food costs.
</span>22.50 / 50 = 0.45
So, it's 0.45 for 1 lb. But 1 lb is 10.5 cups, not 5.
0.45 / 5 = 0.09
So, I believe it would cost 0.09 each day to feed the dog.
I dont know with the question your asking but I would maybe compare it with the 8 and 6 sorry I couldn't help much!
<span>For example
let there be 100 students
so the number of girls=40
20% of girls=20%of40=20*40/100=8 wear glasses
Which means 8 out of 100 students wear glasses
So 8%students wear glasses</span>
Unfortunately you cannot use logs to solve this.
However, it shouldn't take too long to use guess-and-check to see that
Showing that x = 2 is the solution to the equation.
You can use a graphing calculator to graph out and . The two curves cross at (2,13). The x coordinate of that intersection is what we're after. GeoGebra and Desmos are two free options you can pick from in terms of a graphing calculator.