2 years ago

Write two equations so that each have variables on both sides and a solution of 1/2

1 answer:

3 0

The solution will be:

x= $\frac{1}{2}$

we can start here and just modify this, for example: add x to both sides:

2x= $\frac{1}{2}$ +x

this is one such equation!

and further let's add 5 to both sides

2x+5=5 $\frac{1}{2} +x$
and another such equation!

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-3(-4n + 30) = -30 need help

DIA [1.3K]

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-3 times -4n = 12n

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SO,

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+90 +90

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This is your answer,

IF THIS HELPED, PLS GIVE ME BRAINLIEST!

6 0

2 years ago

For the following geometric sequence find the recursive formula: {-1, 3, -9, ...}.

vredina [299]

First term (a1) is -1

recursive formula goes like this

$a_n$ is the nth term
$a_{n-1}$ is the term before that

we normally have $a_n=f(a_{n-1})$

we see each term is multipying by -3 to get next one

so that would be
$a_n=-3*a_{n-1}$ where a1=-1

the 3rd option is correct except that it is the explicit formula

so answer is 2nd one

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