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Write each number in scientific notation. $$ -5716 $$

Short Answer

Expert verified
The number -5716 written in scientific notation is \(-5.716 \times 10^3\).

Step by step solution

01

Identify the Coefficient and Decimal Point

Recognize that the number -5716 is written with a decimal point at the end (-5716.). The decimal point's current placement determines the coefficient when written in scientific notation. Here the coefficient should be between 1 and 10, thus we need to move the decimal point three places to the left to get the coefficient -5.716.
02

Determining the Exponent

The exponent in the scientific notation is determined by the number of places the decimal point was moved. In this case, it was moved 3 places to the left, which means the exponent is +3. If the decimal was moved to the right, the exponent would be negative.
03

Write the Number in Scientific Notation

Combine the coefficient and the exponent to write the number in scientific notation. The number -5716 in scientific notation is written as \(-5.716 \times 10^3\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Exponent
In scientific notation, an exponent plays a crucial role. It indicates how many times the base, which is always 10, is to be multiplied by itself.
When converting a number like -5716 to scientific notation, the exponent reflects the movement of the decimal point from its initial position to where it needs to be for the coefficient (a number between 1 and 10, here -5.716).
In this case, we shifted the decimal three places to the left, creating a positive exponent of +3.
This positive exponent signifies that the original number is larger than the coefficient value.
Exponents in scientific notation can be negative, which occurs when the decimal is shifted to the right.
A negative exponent would imply a small original number. Understanding the direction and effect of moving the decimal point on the exponent is key to mastering scientific notation.
Decimal Point Placement
Decimal point placement is vital in converting numbers to scientific notation. The main objective is to adjust the decimal point until the number falls between 1 and 10, which becomes the coefficient.
For -5716, we initially have a decimal point at the end (-5716.).
Moving the decimal point three spaces to the left converts the number to -5.716. This adjustment places our number within the required range for the coefficient.
The rule of thumb is: shift the decimal as few times as possible to get a number between 1 and 10.
Every move to the left increases the exponent by 1, leading to a positive exponent, while moves to the right result in a negative exponent.
Practicing balancing the decimal point ensures precision in forming accurate scientific notation.
Coefficient in Scientific Notation
A coefficient in scientific notation is always a value between 1 and 10, which can be positive or negative.
For the number -5716, the proper coefficient is determined by shifting the decimal to form -5.716. This value now serves as the coefficient in our scientific notation.
By achieving a coefficient such as -5.716, it implies reorganizing the number's digits to respect scientific notation rules.
This process involves understanding how other mathematical transformations correlate with real-world data, as scientific notation is often used to express vast or minute quantities effectively.
A manageable coefficient makes it easier to interpret and communicate complex numerical data, a key reason why scientific notation is widely used in scientific and engineering contexts.

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Most popular questions from this chapter

a. A mathematics professor recently purchased a birthday cake for her son with the inscription $$\text { Happy }\left(2^{\frac{5}{2}} \cdot 2^{\frac{3}{4}} \div 2^{\frac{1}{4}}\right) \text { th Birthday. }$$ How old is the son? b. The birthday boy, excited by the inscription on the cake, tried to wolf down the whole thing. Professor Mom, concerned about the possible metamorphosis of her son into a blimp, exclaimed, "Hold on! It is your birthday, so why not take \(\frac{8^{-\frac{4}{3}}+2^{-2}}{16^{-\frac{3}{4}}}\) of the cake? I'll eat half of what's left over." How much of the cake did the professor eat?

If 6.2 is multiplied by \(10^{3},\) what does this multiplication do to the decimal point in 6.2?

Simplify each exponential expression. Assume that variables represent nonzero real numbers. $$ \frac{\left(x^{-2} y\right)^{-3}}{\left(x^{2} y^{-1}\right)^{3}} $$

You had \(\$10,000\) to invest. You put x dollars in a safe, government-insured certificate of deposit paying 5% per year. You invested the remainder of the money in noninsured corporate bonds paying 12% per year. Your total interest earned at the end of the year is given by the algebraic expression $$0.05 x+0.12(10,000-x)$$ a. Simplify the algebraic expression. b. Use each form of the algebraic expression to determine your total interest earned at the end of the year if you invested $6000 in the safe, government-insured certificate of deposit.

Perform the indicated computations. Write the answers in scientific notation. If necessary, round the decimal factor in your scientific notation answer to two decimal places. $$ \left(8.2 \times 10^{8}\right)\left(4.6 \times 10^{4}\right) $$

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