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3 years ago

Find the sum of the geometric series if n=6, r= 1/4, a = 2.

Mathematics

1 answer:

galben [10]3 years ago

3 0

Sn = a(1-r^n)/(1-r)

Sn= 8(1-1/4096)/3= 2.67

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Help me please show how you got the answer

Lilit [14]

Answer:

Firstly you need to put the equation in form of. y =ax+b

Let us do it

We have

2x-2y=18

-2y=18-2x

-y=(18) /2 - (2x)/2

-y =9-x

Mutiply by - to remove it beside y

Y=-9+x

Which is y=x-9

Slope =a=1

Yintercept=b=-9

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Step-by-step explanation:

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3 years ago

In the following exercises, multiply the binomials. Use any method.<br> 266. (3rs − 7)(3rs − 4)

Novay_Z [31]

Answer:

Hence the expression $(3rs-7)(3rs-4)=9r^2s^2-33rs+28$

Step-by-step explanation:

Explanation

The given expression is (3rs-7)(3rs-4).
We have to multiply the given expression.
Multiply the (3rs-7) by -4, multiply the (3rs-7) by 3rs then add like terms.

$\begin{matrix}{} & {} & {} & {} & 3rs & - & 7 \\ \times & {} & {} & {} & 3rs & - & 4 \\ \end{matrix}$

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$\begin{matrix}{} & {} & {} & - & 12rs & + & 28 \\ {} & {} & 9{{r}^2}{{s}^2} & - & 21rs & {} & {} \\ \end{matrix}$

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$\begin{matrix}{} & {} & 9{{r}^2}{{s}^2} & - & 33rs & + & 28 \\ \end{matrix}$

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2 years ago