2 years ago

Plz help me I am so bad at math I will thank u and mark u branly

Mathematics

1 answer:

vagabundo [1.1K]2 years ago

7 0

That is my home work also I will not tell you

You might be interested in

What is the sum of the geometric series

lbvjy [14]

If $S$ denotes the sum of the first $n$ terms of a geometric series with first term $a$ and common ratio $r$ , then

$S=a+ar+ar^2+\cdots+ar^{n-3}+ar^{n-2}+ar^{n-1}$
$rS=ar+ar^2+ar^3+\cdots+ar^{n-2}+ar^{n-1}+ar^n$
$\implies S-rS=a+(ar-ar)+(ar^2-ar^2)+\cdots+(ar^{n-1}-ar^{n-1})-ar^n$
$\implies (1-r)S=a(1-r^n)$
$\implies S=a=\dfrac{1-r^n}{1-r}$

Using summation notation, you have

$S=\displaystyle\sum_{x=1}^nar^{x-1}=\sum_{x=0}^{n-1}ar^x=a\dfrac{1-r^n}{1-r}$

In this case, you have $a=2$ , $r=\dfrac12$ , and $n=16$ . So the value of the sum is

$\displaystyle\sum_{x=0}^{15}2\left(\frac14\right)^x=2\dfrac{1-\left(\frac14\right)^{16}}{1-\frac14}\approx2.67$

Rounded to the nearest whole number, the answer would be 3.

4 0

3 years ago

Read 2 more answers

Which of these problem types can not be solved using the Law of Sines? SSS ASA AAS SAS

olya-2409 [2.1K]

SAS and SSS cannot be solved using the Law of Sines.

6 0

3 years ago

If a man walks around a circle 2.125 times, how many meters did he walk if the radius of the circle is 4m

shtirl [24]

First you find the circumference... 2pi*r... and then you multiply that by 2.125. To find out the total amount of meters that the man walks!

5 0