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Anna007 [38]
4 years ago
8

What does 3 - 4y + 9y equal to

Mathematics
2 answers:
zloy xaker [14]4 years ago
7 0
I think its 3 - 13y, since you can't combine unlike terms.
shtirl [24]4 years ago
4 0
I thinck it is 10 but dont trust me wait for another person


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Given: an=3+an−1 and a1=5<br><br> What is the explicit rule for the arithmetic sequence?
Flura [38]

The explicit rule for the arithmetic sequence for the sequence is a(n) = 3n + 2.

<h3>What is a sequence?</h3>

It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.

We have given:

\rm a_n=3+a_n_-_1 and

\rm a_1=5

\rm a_n-a_n_-_1= 3

The above expression represents the common ratio:

d = 3

First term:

a = 5

The explicit rule for the arithmetic sequence:

a(n) = 5 + (n - 1)3

a(n) = 3n + 2

Thus, the explicit rule for the arithmetic sequence for the sequence is a(n) = 3n + 2.

Learn more about the sequence here:

brainly.com/question/21961097

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2 years ago
A first number plus twice a second number is 11. Twice the first number plus the second totals 31 find the numbers
Serhud [2]
X + 2y = 11
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x = 11 - 2y

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22 - 4y + y = 31
3y = - 9
y = - 3

x = 11 - 2(-3)
x = 11 + 6
x = 17
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4 years ago
Write 12 as a percentage of 15.
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Answer:

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This equation shows how the accuracy of Alexa's watch is related to how long it's been since she last set it.
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