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3 years ago

Enter an equation for the word sentence. Use the variable n.

Mathematics

1 answer:

Usimov [2.4K]3 years ago

6 0

Answer:

$n + 4.4 = 8.1$

Step-by-step explanation:

We know we have to write an algebraic equation for the sentence - so "translate" the phrases of the sentence step-by-step. Let the unknown number be represented by the variable n, as the question states.

Start with the phrase "the sum of a number and 4.4." A sum comes as a result of adding numbers together - therefore the first part of the equation must be $n + 4.4$ .

Next, the sentence says "is 8.1." The "is" indicates that the expression we just wrote equals something, so that number must be 8.1. Therefore, the whole equation must be $n + 4.4 = 8.1$ .

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SOLUTION:

Given that, Martha estimated the quotient of -71.81 and -8.02 using rounding to the nearest whole number.

And she committed an mistake. We have to find the error made by Martha while calculating quotient.

She treated -71.81 to be 72 and -8.02 to be 9. As both the number are negative there will be no problem when we get quotient.

When treated as above she got quotient as 8.

But in general, the quotient is not 8.

If we see options, we derive an conclusion.

Option (1)

she should have rounded 71.81 to 70, no this is not correct as 72 is nearest whole number.

Option (2)

she should have rounded 8.02 to 8, yes this is correct conclusion.

Option (3)

she should have divided 8 by 72, no this is not correct, we should divided 72 by 8.

Option (4)

she didn’t make an error, this is wrong as in 2nd option we caught an error.

Hence, second option is correct.

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