147k views
5 votes
What is the result of the multiplication: 5(1/2)4(-5)-2.4(4)(1/2)(2/3)(3/4)?

a) -20
b) -10
c) -5
d) 0
e) 5

User Paranoid
by
8.5k points

1 Answer

6 votes

Final answer:

After following the order of operations and performing step-by-step multiplication, the final result is 7.6, which is not one of the provided options. There may be a typo in the original equation or it has been misinterpreted.

Step-by-step explanation:

The multiplication given is: 5(1/2)4(-5)-2.4(4)(1/2)(2/3)(3/4).

Following the order of operations, we first simplify inside the parentheses, then we perform multiplication from left to right:

  • First, multiply 5 by 1/2 to get 2.5.
  • Next, multiply 2.5 by 4, resulting in 10.
  • Multiply the -5 by -2 to get +10, based on the rule that multiplying two negative numbers will give a positive result.
  • Now let's look at the second part of the expression 2.4(4)(1/2)(2/3)(3/4).
  • Multiply 2.4 by 4 to get 9.6.
  • Multiply 9.6 by 1/2, 2/3, and 3/4 sequentially which simplifies to 2.4 again as all the fractions cancel out (1/2 * 2/3 * 3/4 = 1).
  • Finally, subtract the second multiplication result from the first: 10 - 2.4 = 7.6, which is not one of the provided options, therefore, we have a typo in the original equation or it has been interpreted incorrectly.
User Shi Jie Tio
by
7.8k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories