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3 years ago

What is a rule for the sequence below? 1.8, 2.85, 3.90, 4.95, 6

Mathematics

2 answers:

scZoUnD [109]3 years ago

7 0

Start with 1.8, then add 1.05 repeatedly

larisa [96]3 years ago

4 0

Hello,

The rule is to add each 1.05 each time to the number.

If you ever want to find the common difference, simply take the second number of the sequence and subtract it by the first (2.85 - 1.8).

Hope this helps =).

May

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(5x+1)(5x-1) combine terms

Alinara [238K]

Answer:

25x^2 -1

Step-by-step explanation:

If you multiply parentheses:

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A simpler way is to memorize this formula

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3 years ago

Use elimination to solve each system if equation 3x+2y=0and x-5y=17

kotykmax [81]

Answer:

$y = -3$

$x=2$

Step-by-step explanation:

$3x + 2y = 0$

$x - 5y=17$

to use the elimination you have to make one of the numbers same

$3(x-5y=17)$

and you would have to change the sign so that both of the 3x could cancel out.

New system of equation

$3x + 2y = 0$

$-3x+15y=-51$

$17y=-51$

$y = -3$

so we know the y value so now you could find the x value take one equation

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$x +15=17$

$x = 2$

you could try it with both of the equations

$3x + 2y = 0$

$3x + - 6=0$

$3x-6=0$

$3x=6$

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3 years ago

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

emmasim [6.3K]

Given =

n=6,

r=1/4

a=2

Sn = a+ar+ar²+ar³+ar⁴+ar⁵= 2+0.5+0.125+0.03125+0.0078125+0.00195~ 2.67

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Answer:

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leonid [27]

Puede tomar una gota mejor para enter

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