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9966 [12]
3 years ago
15

Which expression has a value of 15 when n = 7? 43 - 5n 3n - 5 6n - 28 19 - 28/n

Mathematics
2 answers:
cupoosta [38]3 years ago
8 0
19 - 28/n
n=7
19 - 28/7
19 - 4
=15
Leya [2.2K]3 years ago
5 0

Answer:

19-\frac{28}{n}\text{has a value of 15 when n=7}

Step-by-step explanation:

Given the following expressions

we have to choose the expression which has a value 15 when n is 7

Option 1: 43-5n

Put n=7,

43-5(7)=43-35=8

Option 2: 3n - 5

3(7)-5=21-5=16

Option 3: 6n-28

6(7)-28=42-28=14

Option 4: 19-\frac{28}{n}

19-\frac{28}{7}=19-4-15

\text{Hence, }19-\frac{28}{n}\text{has a value of 15 when n=7}

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