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Valentin [98]
3 years ago
10

Which of the following describes the correct process for solving the equation 3x+6=21 and arrives at the correct solution?

Mathematics
1 answer:
My name is Ann [436]3 years ago
4 0
The correct solution is C

Subtract 6 from both sides of the equation
        3x + 6 - 6 = 21 - 6
        3x = 15

Then divide both sides by 3

       \frac{3x}{3}   =    \frac{15}{3}
       
       x = 5

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What number does 4 and 8 share in adding mixed numbers unlike denominators
TiliK225 [7]

Answer:commen factoers is what you need 2 4 8 16 and so on

Step-by-step explanation:

To add mixed numbers, we first add the whole numbers together, and then the fractions. ...

If the denominators of the fractions are different, then first find equivalent fractions with a common denominator before adding. ...

Subtracting mixed numbers is very similar to adding them.

7 0
3 years ago
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Jake remembers only the last 3 letters of his four-letter Klingon name. He is sure that the first letter is neither "N" nor "Z,"
mylen [45]

Answer:

1/8.

Step-by-step explanation:

It can be any one of 10-2 = 8 letters.

6 0
2 years ago
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5 0
3 years ago
The common ratio of a geometric series is 1/4 and the sum of the first 4 terms is 170.
Illusion [34]

Answer: the first term of the series is 128

Step-by-step explanation:

In a geometric sequence, the consecutive terms differ by a common ratio. The formula for determining the sum of n terms, Sn of a geometric sequence is expressed as

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

Where

n represents the number of term in the sequence.

a represents the first term in the sequence.

r represents the common ratio.

From the information given,

r = 1/4 = 0.25

n = 4

S4 = 170

Therefore, the expression for the sum of the 4 terms, S4 is

170 = a(1 - 0.25^4)/(1 - 0.25)

170 = a(1 - 0.00390625)/(1 - 0.25)

170 = a(0.99609375)/(0.75)

170 = 1.328125a

a = 170/1.328125

a = 128

5 0
2 years ago
Which of the following are examples of irrational numbers?
andreyandreev [35.5K]
√4 + √16 = 2 + 4 = 6   <--- rational
√5 + √36 = √5 + 6   <--- irrational 
√9 + √24 = 3 + √24   <--- irrational
2 * √4 = 2 * 2 = 4   <--- rational 
√49 * √81 = 7 * 9 = 63   <---rational
3√12 = 3√(4 * 3) = (3 * 2)√3 = 6√3    <---irrational

Hope this helps ^-^
5 0
3 years ago
Read 2 more answers
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