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AlekseyPX
1 year ago
12

What is an exponent? Because i am confused

Mathematics
1 answer:
ollegr [7]1 year ago
8 0

An exponent is a number written above and to the right side of a value or number in math. The value or number is called the base, and the expression is read out as;

"Base raised to the power of exponent."

An example is given below;

10^3

In this example, 10 is the base and 3 is the EXPONENT.

The expression is now read out as,

"10 raised to the power of 3"

Note that even unknown values (such x as we commonly use in math) can also be an exponent or base. For example, we can have;

\begin{gathered} 10^x \\ OR \\ 2x^3 \end{gathered}

So basically, an exponent indicates the number of times a number is used to multiply itself.

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5k + (-7) = 13 what does k =
Scilla [17]

Answer:

k = 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

5k + (-7) = 13

<u>Step 2: Solve for </u><em><u>k</u></em>

  1. Simplify equation:                             5k - 7 = 13
  2. Addition Property of Equality:          5k - 7 + 7 = 13 + 7
  3. Simplify equation:                             5k = 20
  4. Division Property of Equality:           5k/5 = 20/5
  5. Simplify equation:                             k = 4

<u>Step 3: Check</u>

<em>Plug in k into the original equation to verify it's a solution.</em>

  1. Substitute in <em>k</em>:                    5(4) + (-7) = 13
  2. Multiply:                               20 + (-7) = 13
  3. Add:                                     13 = 13

Here we see that 13 does indeed equal 13.

∴ k = 4 is the solution to the equation.

5 0
3 years ago
Read 2 more answers
Solve for x.<br> 3 + 9x = 11x - 7
-BARSIC- [3]

Answer:

3 + 9x = 11x - 7

simplify

9x + 3 = 11x - 7

subtract 11x from both sides

-11x             -11x

-2x + 3 = -7

get rid of constants first by subtracting by 3 from both sides

-3            -3

-2x = -10

divide both sides by -2 since that is the inverse operation of multiplication

/-2    /-2

X = 5

5 0
2 years ago
Read 2 more answers
A chef knows that ground beef used for hamburger is safe to eat once it reaches 160 degrees Fahrenheit. For optimized taste and
Lelu [443]

Answer:

The first option is correct.

Step-by-step explanation:

We have been told that a chef knows that ground beef used for hamburger is safe to eat once it reaches 160 degrees Fahrenheit. For optimized taste and safety, he will not allow a hamburger cooked to a temperature under 160 degrees or over 170 degrees to be served.

Let us see our graphs one by one.

Upon looking at first graph we can see it shows that hamburger should be cooked under 160 degrees and over 170 degrees. It is the case which chef will not allow. So this is our graph that represents the conditions under which the chef will not allow the hamburger to be served.

Second graph represents that hamburger should be cooked at and under 160 degrees and at and over 170 degrees. This can't be our choice as it includes 160 and 170 degrees.

Third graph represents the temperature at which chef will allow hamburgers to be served that is temperature between 160 to 170 degrees Fahrenheit including 160 and 170 degrees Fahrenheit. So this can't be our choice either.

Fourth graph represents the temperature between 160 to 170 degrees Fahrenheit excluding 160 and 170 degrees Fahrenheit.

Therefore, option 1 is the correct choice.

3 0
3 years ago
Read 2 more answers
part of the river she observed fell 1.68 millimeters per year for 1.5 years. Use the distributive property to calculate the exac
Alecsey [184]
1.68 mm per year for 1.5 years could be rewritten as 
(2.00-0.32) mm per year for 1.5 yrs.

Multiply:  (1.5 yrs)(2.00-0.32)(mm/yr) = 3 mm + 0.48 mm = 3.48 mm

This approach makes use of the distributive property of multiplication.
8 0
3 years ago
Calculate the standard deviation. Variance = 107.76. Mean = 34.2
Llana [10]

Answer:

The standard deviation is 10.38

Step-by-step explanation:

Given;

Variance, v = 107.76

mean, x = 34.2

The standard deviation is given by;

standard deviation = √variance

standard deviation = √107.76

standard deviation =  10.381

standard deviation = 10.38 (two decimal places)

Therefore, the standard deviation is 10.38

8 0
3 years ago
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