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cricket20 [7]
3 years ago
7

Which expression can be used to check the answer to 56 divided by (negative 14) = n?

Mathematics
2 answers:
kykrilka [37]3 years ago
8 0

Answer: first option.

Step-by-step explanation:

You have the following equation given in the exercise:

\frac{56}{-14}=n

Observe the equation. As  you can notice in this equation, when you divide 56 by -14, the quotient obtained (which is the result of the division), is "n".

In this case you need to remember that, by definition, to verify that result  you need to apply the opposite operation and multiply  "n" by -14, in order to find out if that product is actually 56.

So, if the product is 56, then the division is correct, but if the product is not 56, then there is a mistake.

Therefore, based on the explained above, you can conclude that the expression that can be used to check the answer to\frac{56}{-14}=n is the expression shown below:

(-14)(n)

Natalka [10]3 years ago
6 0

For this case we have the following expression:

\frac {56} {- 14} = n

To verify the answer we have:

Multiplying both sides of the equation by -14:

- (14) * \frac {56} {- 14} = n * (- 14)\\56 = n * (- 14)

Thus, the answer can be verified with:

56 = n * (- 14)

Answer:

56 = n * (- 14)

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<img src="https://tex.z-dn.net/?f=n%20-%205%20%5Cleqslant%205n%20-%201" id="TexFormula1" title="n - 5 \leqslant 5n - 1" alt="n -
ANTONII [103]
Hello there!

n - 5 ≤ 5n - 1

Solve for n

Let's start by subtracting 5n from both sides

n - 5 - 5n ≤ 5n - 5n - 1

n - 5 - 5n ≤ -1

We need to transfer -5 on the other side, we can do that by adding 5 on both sides

n - 5 - 5n + 5 ≤ -1 + 5

n - 5n ≤ -4

-4n ≤ -4

Finally divide both sides by -4

-4n/-4 ≤ -4/-4

n ≥ -1   (This is the answer)!

Do you know why I changed the sign?


 A lot of students failed to remember that rules, which is:
When you are solving an inequality, if you divide both sides by a negative sign, you MUST change the symbol as well. If it was this <, it will change to this >. Got it? Cool!



I hope the steps are clear to understand. If you have questions, feel free to let me know...

As always, I am here to help!
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