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alex41 [277]
4 years ago
12

How many variable are in the expression 3x3y + 5x2 - 4y

Mathematics
2 answers:
zhenek [66]4 years ago
5 0

technically, here are 4, but since they are both x's and y's I guess there's 2 since they equal the same value

nlexa [21]4 years ago
4 0

The correct answer is <em><u>3</u></em>

1. 3x, 5x

2. 3y, -4y

3. 2

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Find 3 consecutive odd integers whos sum is 28
DerKrebs [107]
I'm going to assume you meant 27 because three odd integers added together can't be even.

The three integers are expressed as x, y and z:

x+y+z=27
x+2=y
y+2=z
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x+x+2+x+4=27
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7+9+11=27

The numbers are 7, 9 and 11

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Inglés por favoro siento, pero no puedo ayudarle si no soy capaz de entender la pregunta. Haga clic en el enlace y luego escriba su pregunta y luego tratar de publicar

www.spanishdict.com/translation

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8 0
3 years ago
Read 2 more answers
The sum of the first 3 terms of a geometric series is 171 and the common ratio is 2/3
Nimfa-mama [501]
<h3>Answer:  81</h3>

==============================================

Work Shown:

a = first term

a*(2/3) = (2/3)a= second term

(2/3)a*(2/3) = (4/9)a = third term

note how I multiplied each previous term by the common ratio (2/3) to get the next term

Add up the three terms

a + (2/3)a + (4/9)a = (9/9)a + (6/9)a + (4/9)a = (19/9)a

Set this equal to 171, which is what we want the first three terms to sum to, then solve for 'a'

(19/9)a = 171

a = (9/19)*171

a = 81 is the first term

------------------------------------

Checking the answer:

a = 81 = first term

(2/3)*a = (2/3)*81 = 54 = second term

(4/9)*a = (4/9)*81 = 36 = third term

adding up the three terms gets us

81+54+36 = 171

so we have confirmed the answer

4 0
3 years ago
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