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lisabon 2012 [21]
2 years ago
10

Which One Doesn't Belong? Which expression does not belong with the others? Explain your reasoning.

Mathematics
1 answer:
Gwar [14]2 years ago
8 0

The expression that does not belong to the other group of expression is (c) 7(-2)(-5)

<h3>What are expressions?</h3>

Expressions are mathematical statements that are represented by numbers and/or variables

The expressions are given as:

  • 5(−3)(−1)
  • (−4)2(−6)(−2)
  • 7(−2)(5)
  • −20(−6)

Start by evaluating all 4 expressions

5(-3)(-1) = 15

(-4)^2(-6)(-2) =192

7(-2)(5) = -70

-20(-6) = 120

Notice that three of the expressions return a positive result, while one of them return a negative result

The negative expression is the odd one among the four expressions

Hence, the expression that does not belong is (c) 7(-2)(-5)

Read more about algebraic expressions at:

brainly.com/question/4344214

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Answer:

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Step-by-step explanation:

Given:

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Solution:

Step 1:  Finding the Number of hours is need to type 4160 words :

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Substituting the values

= \frac{16000}{3120}

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Step 4 :  Finding the cost for recreating the manual.

= number of hours  x cost per hour

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