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tankabanditka [31]
3 years ago
12

34 - 2(x + 17) = 23x - 15 - 3x what is x.

Mathematics
1 answer:
balandron [24]3 years ago
6 0
X= 15/22. Hope this helps :)
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Which expression has a value of 15 when n = 7? 43 minus 5 n 3 n minus 5 6 n minus 28 19 minus StartFraction 28 Over n EndFractio
andrey2020 [161]

Answer:

19-\dfrac{28}{n} is the expression with value of 15 when n = 7.

Step-by-step explanation:

To find the expression whose value is 15, substitute the value of n = 7 in each given expression.

Expression 1:

43-5n

Substituting the value of n,

43-5\left(7\right)

Simplifying,

43-35=8

Since the value of the expression is 8 which is not equal 15.

Hence expression 43-5n does not have value of 15 when n = 7.

Expression 2:

3n-5

Substituting the value of n,

3\left(7\right)-5

Simplifying,

21-5=16

Since the value of the expression is 16 which is not equal 15.

Hence expression 3n-5 does not have value of 15 when n = 7.

Expression 3:

6n-28

Substituting the value of n,

6\left(7\right)-28

Simplifying,

42-28=14

Since the value of the expression is 14 which is not equal 15.

Hence expression 6n-28 does not have value of 15 when n = 7.

Expression 4:

19-\dfrac{28}{n}

Substituting the value of n,

19-\dfrac{28}{7}

Simplifying,

19-4=15

Since the value of the expression is 15 which is equal 15.

Hence expression 19-\dfrac{28}{n} has the value of 15 when n = 7.

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3 years ago
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Find the greatest common factor of 32 and 39
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Answer:

1

Step-by-step explanation:

We will first find the prime factorization of 32 and 39. After we will calculate the factors of 32 and 39 and find the biggest common factor number .

32=2^5

39=3^1*13^1

-

List of positive integer factors of 32 that divides 32 without a remainder.

1,2,4,8,16

List of positive integer factors of 39 that divides 32 without a remainder.

1,3,13

We found the factors and prime factorization of 32 and 39. The biggest common factor number is the GCF number.

So the greatest common factor 32 and 39 is 1.

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Answer:

For C all she has to do is look at the chart-

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2=8

3=12

4=16

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3 years ago
Subtract 4/15 - 1/6. Simplify the answer.
damaskus [11]

Answer:

Find the smallest multiple the denominators have in common  

30

Expand each fraction so that the denominators are 30

\frac{8}{30} + \frac{- 5}{30}

Add or subtract the numerators and keep the same denominator

\frac{8- 5}{30}

Simplify

\frac{1}{10}

​  

 

​

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Answer:

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Step-by-step explanation:

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