Answer: -170
Concept:
When encountering questions that require multiple steps of the calculation, it is suggested to follow the PEMDAS.
- <u>P</u>arenthesis
- <u>E</u>xponents
- <u>M</u>ultiplication
- <u>D</u>ivision
- <u>A</u>ddition
- <u>S</u>ubtraction
Solve:
**Disclaimer** I assume that it is supposed to be (25 + 45). If it was, then you may refer to my answer. If the ")" after 45 is just a typo, you may point it out and I will redo it.
<u>Given expression</u>
13 + {16 + 2 - [(25 + 45) × 3] + 9}
<u>Do the parenthesis of the inner most</u>
=13 + {16 + 2 - [70 × 3] + 9}
=13 + {16 + 2 - 210 + 9}
<u>Do addition first, then subtraction</u>
=13 + {18 - 210 + 9}
=13 + {27 - 210}
=13 - 183
=-170
Hope this helps!! :)
Please let me know if you have any questions
Answer:
the best estimate of the sum of 4 2/5 and 7 3/4 is about 12
Answer:
The answer is D
Step-by-step explanation:
the only one that makes sense
