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Sedaia [141]
3 years ago
6

On her first 5 tests, Francine scored 78%, 82%, 89%, 83% and 84%. What was her mean score?

Mathematics
2 answers:
laila [671]3 years ago
8 0

Answer:

83.2%

Step-by-step explanation:                                                                                                  we know, mean = sum of data/ number of data

= 78+82+89+83+84

=416

now ,

416/5 = 83.2%

Leto [7]3 years ago
6 0

Answer:

83.2%

Step-by-step explanation:

Just add all the percentages together and divide it by the number of scores, which in this case is 5.

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The annual interest rate of Mike's savings account is 4.8%, and simple interest is calculated monthly. What is the periodic inte
Reptile [31]

The correct option will be: d. 0.4%

For finding the periodic interest rate , we need to divide the annual interest rate by the number of times interest calculated in a year.

Here, the simple interest is calculated monthly, that means the number of times interest calculated in a year will be 12.

Annual interest rate is 4.8%

So, the periodic interest rate = \frac{4.8}{12}= 0.4%

5 0
3 years ago
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Solve 5x = 2 writing your answer as a fraction in its simplest form
sveticcg [70]

Answer:

x = 2/5

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>

5x = 2

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

  1. Divide 5 on both sides:                    x = 2/5

<u>Step 3: Check</u>

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

  1. Substitute in <em>x</em>:                     5(2/5) = 2
  2. Multiply:                                2 = 2

Here we see that 2 does indeed equal 2.

∴ x = 2/5 is the solution to the equation.

5 0
3 years ago
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Check the picture below.

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natulia [17]

Answer:

Step-by-step explanation:

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He got results as

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To find out what fraction of Amir's stamps are from France, Morocco, or Spain, we have to simply add the three as there is common element between any two pairs

Hence answer is

\frac{1}{3} +\frac{5}{12} +\frac{1}{6}\\ =\frac{11}{12}

8 0
3 years ago
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