Question

Question

Evaluate.

7⋅5+42−23÷4



Responses

49

41

34

9

Answer 1

71.25.

Explanation:

The expression should be evaluated following the order of operations, often remembered by the acronym PEMDAS which stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

So, for the given expression 7⋅5+42−23÷4, here’s how you can evaluate it:

First, perform the multiplication: 7⋅5 = 35.

Then, perform the division: 23÷4 = 5.75.

Finally, perform the addition and subtraction from left to right: 35 + 42 - 5.75 = 71.25.

Therefore, none of the provided options (49, 41, 34, 9) are correct. The correct answer is 71.25.

Answer 2

Answer: 71.25

Step-by-step explanation:

To evaluate the expression 7⋅5+42−23÷4, we follow the order of operations (also known as PEMDAS) to determine which operations to perform first.

PEMDAS stands for:

1. Parentheses (simplify expressions inside parentheses first)

2. Exponents (perform any calculations involving exponents)

3. Multiplication and Division (perform multiplication and division from left to right)

4. Addition and Subtraction (perform addition and subtraction from left to right)

Using this order, let's evaluate the expression step by step:

1. 7⋅5: Multiply 7 by 5 to get 35.

2. 23÷4: Divide 23 by 4 to get 5.75.

3. 35+42: Add 35 and 42 to get 77.

4. 77−5.75: Subtract 5.75 from 77 to get 71.25.

Therefore, the value of the expression 7⋅5+42−23÷4 is 71.25.

Remember, always follow the order of operations to evaluate expressions accurately.

In my opinion, none of the responses are correct. But I hope this helps.