What is f + 0.3 < 1.7 I need help solving this please can anybody help me I Tryed and I can't get the answer ?? ??? ??

Answer:

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:

Substituting the value of n,

Simplifying,

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

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

Expression 2:

Substituting the value of n,

Simplifying,

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

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

Expression 3:

Substituting the value of n,

Simplifying,

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

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

Expression 4:

Substituting the value of n,

Simplifying,

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

Hence expression has the value of 15 when n = 7.

Final answer:

Upon substituting n = 7 into each of the four mathematical expressions given in the question, the expression '19 - 28/n' evaluates to 15. Hence, '19 - 28/n' is the answer.

Explanation:

To find out which expression equals to 15 when n = 7, we substitute n = 7 into each of the given expressions and evaluate them:

• 43 - 5n becomes 43 - 5(7) = 43 - 35 = 8,
• 3n - 5 becomes 3(7) - 5 = 21 - 5 = 16,
• 6n - 28 becomes 6(7) - 28 = 42 - 28 = 14,
• 19 - 28/n becomes 19 - 28/7 = 19 - 4 = 15.

Therefore, the expression '19 - 28/n' evaluates to 15 when n = 7.

Learn more about Algebra Expressions here:

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