Multiply.

Question

(2.5 × 10})(9.2 × 10')
Hint:
Montiply Scienthic Motation®
(6.2 × 105) • (4x103)
1. Multiply the coefficients.
6.2 • 4 = 24.8
2. Add the exponents
5+ 3=8
3. Write your answer in the proper form.
24,8 × 108-1
2.48 × 10°
0 Mighty Mier Moth 2023
(1 point)
2.3 × 10°
2 × 10°
1.8 × 10°
8.8 × 109

Answer 1

To multiply the two scientific notation numbers \( (2.5 × 10^3) \) and \( (9.2 × 10^2) \), follow these steps:

1. Multiply the coefficients: \[ 2.5 \times 9.2 = 23.0 \]

2. Add the exponents: \[ 3 + 2 = 5 \]

3. Combine the results: \[ 23.0 × 10^5 \]

4. Convert to proper scientific notation: Since \( 23.0 \) is not between \( 1 \) and \( 10 \), we need to adjust:

   • Move the decimal point one place to the left, which gives us \( 2.3 \).
   • This means we need to increase the exponent by \( 1 \) (because we moved the decimal left), so \( 10^5 \) becomes \( 10^6 \).

Thus, the answer is: \[ 2.3 × 10^6 \]

So the correct option is:

• 2.3 × 10^6

Answer 2

Evaluate the expression.
-8•9÷1-8-(-4)1
Order of Operations
P
() Parenthesis
E
x?
Exponents
M X Multiplication
D
Division
Addition
S
ー
Subtraction
(1 point)
6
-
• -18
0 18

Answer 3

Let’s evaluate the expression step by step following the order of operations (PEMDAS/BODMAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

The given expression is:

\[ -8 \cdot 9 \div 1 - 8 - (-4) \]

1. Evaluate the multiplication and division from left to right:

   • First, calculate \(-8 \cdot 9\): \[ -8 \cdot 9 = -72 \]
   • Now substitute back into the expression: \[ -72 \div 1 - 8 - (-4) \]
   • Next, perform the division \(-72 \div 1\): \[ -72 \div 1 = -72 \]
   • Now substitute back: \[ -72 - 8 - (-4) \]

2. Now, deal with the subtraction and addition from left to right:

   • First, subtract \(8\): \[ -72 - 8 = -80 \]
   • Now substitute back: \[ -80 - (-4) \]
   • Subtracting a negative is the same as adding, so this becomes: \[ -80 + 4 = -76 \]

The final result of the expression is:

\[ \boxed{-76} \]

Answer 4

That’s not one of the answers

Answer 5

I apologize for any confusion. Let's carefully reevaluate the expression step by step.

The original expression is:

\[ -8 \cdot 9 \div 1 - 8 - (-4) \]

Let's break it down again, following the order of operations.

1. Multiplication and Division (from left to right):

   • Calculate \(-8 \cdot 9\): \[ -8 \cdot 9 = -72 \]
   • Now substitute that into the expression: \[ -72 \div 1 - 8 - (-4) \]
   • Next, calculate the division \(-72 \div 1\): \[ -72 \div 1 = -72 \]
   • Now substitute that back in: \[ -72 - 8 - (-4) \]

2. Addition and Subtraction (from left to right):

   • First, subtract \(8\): \[ -72 - 8 = -80 \]
   • Now we have: \[ -80 - (-4) \]
   • Subtracting a negative is the same as adding: \[ -80 + 4 = -76 \]

Since this answer (-76) does not match the options provided (6, -18, 0, 18), let me check to see if there was a misinterpretation of the expression.

Could you please confirm that the expression is correct as it was originally stated? Specifically, if the original expression includes parentheses or any differences, please let me know!

Otherwise, it appears the computations are correct, leading to an unexpected answer based on the provided options. Thank you!

Answer 6

Evaluate the expression.
-8•9÷1-8-(-4)1
6
-6
-18
18

Answer 7

Let's carefully evaluate the expression step-by-step. The expression given is:

\[ -8 \cdot 9 \div 1 - 8 - (-4) \]

We'll follow the order of operations (PEMDAS/BODMAS).

1. Calculate the multiplication: \[ -8 \cdot 9 = -72 \]

2. Now substitute back into the expression: \[ -72 \div 1 - 8 - (-4) \]

3. Next, perform the division: \[ -72 \div 1 = -72 \]

4. Now the expression is: \[ -72 - 8 - (-4) \]

5. Perform the subtraction:

   • First, calculate \(-72 - 8\): \[ -72 - 8 = -80 \]

6. Now we have: \[ -80 - (-4) \]

   • Subtracting a negative number is the same as adding, so: \[ -80 + 4 = -76 \]

This is still giving us \(-76\), which is not one of the answer choices you provided. It looks like I may have misunderstood the expression as written or missed a detail.

Revisiting the expression as you provided:

\(-8 \cdot 9 \div 1 - 8 - (-4) \cdot 1\), let me reevaluate that:

Step-by-step evaluation again

1. Calculate the multiplication: \(-8 \cdot 9 = -72\)

2. Substitute back: \(-72 \div 1 - 8 - (-4) \cdot 1\)

3. Perform the division: \(-72 \div 1 = -72\)

4. The expression now becomes: \(-72 - 8 - (-4)\)

5. Handle the subtraction:

   • Calculate \(-72 - 8 = -80\)
   • Now we have \(-80 - (-4)\)
   • Change the double negative to positive: \(-80 + 4\)

6. Final calculation: \(-80 + 4 = -76\)

Since this answer still results in \(-76\), please double-check whether the expression has been transcribed correctly.

Now, if we simplify:

1. If the expression was interpreted incorrectly, or if an operator or number is missing, please clarify.
2. If the expression is exact, it seems like we are missing the answers that lead to \(-76\), so that may suggest an issue with provided answer choices or format.

For provided options:

• 6
• -6
• -18
• 18

Based on my calculations, it seems that if the question intended to simplify further or alter any operations, it is yielding consistent results that differ from those observed.

Please assist with any clarifications in the expression!

Answer 8

Which answer is it

Answer 9

Let’s evaluate the expression again to find the correct answer based on the original task:

The expression you provided is:

\[ -8 \cdot 9 \div 1 - 8 - (-4) \cdot 1 \]

We'll follow the order of operations carefully (PEMDAS/BODMAS).

Step-by-step evaluation:

1. Perform the multiplication: \[ -8 \cdot 9 = -72 \]

2. Substituting back into the expression gives us: \[ -72 \div 1 - 8 - (-4) \]

3. Now, perform the division: \[ -72 \div 1 = -72 \]

4. Substituting this back results in: \[ -72 - 8 + 4 \] (since subtracting a negative number is equivalent to addition).

5. Now, perform the operations from left to right:

   • First, calculate \(-72 - 8\): \[ -72 - 8 = -80 \]
   • Then calculate \(-80 + 4\): \[ -80 + 4 = -76 \]

Rechecking the Answer Choices:

Here are the answer choices:

• 6
• -6
• -18
• 18

None of these options match \(-76\).

Based on my calculations, it looks like there is either a misunderstanding of the expression or an inconsistency with the given answer choices.

Final Review:

If the expression is simply: \[ -8 \cdot 9 \div 1 - 8 - (-4) \] The result indeed calculates to \(-76\).

If forced to choose from the options provided and assuming a miscommunication in the expression, the closest number available (if dynamics of signs were adjusted or numbers miscommunicated) could lead to a simplification aligning toward \(-18\) given the calculation requires confirming based on the provided mathematical choices or intentions.

If you meant a different expression or need further exploration on operational preferences, please clarify!

Thus, your best choice from the given options regarding the closest numerical direction in mathematical flow is -18, based on the clear distinct difference from original computations. Thank you for your patience!

Answer 10

YOU HAVE TO PICK 1 OF THE ANSWERS

Answer 11

I apologize for the confusion earlier. Let's quickly go through the expression again and arrive at a single answer based on the options you provided.

The expression is:

\[ -8 \cdot 9 \div 1 - 8 - (-4) \]

Step-by-step evaluation:

1. Calculate the multiplication: \[ -8 \cdot 9 = -72 \]

2. Now substitute back into the expression: \[ -72 \div 1 - 8 - (-4) \]

3. Perform the division: \[ -72 \div 1 = -72 \]

4. Now the expression becomes: \[ -72 - 8 - (-4) \]

5. Handling the double negative:

   • The expression changes to: \[ -72 - 8 + 4 \]

6. Calculate:

   • First, calculate \(-72 - 8\): \[ -72 - 8 = -80 \]
   • Then, calculate \(-80 + 4\): \[ -80 + 4 = -76 \]

Since \(-76\) is not one of the answer choices you provided, let's try a different approach. Given the available options:

• 6
• -6
• -18
• 18

We can choose -18 as it is the closest option, even though our calculation gave \(-76\).

Final Answer

I choose: -18

Thank you for your patience, and I appreciate your understanding as we worked through this evaluation!