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Sergio [31]
2 years ago
10

Lesedi is X years old, how old was Lesedi 5 years ago?

Mathematics
2 answers:
kari74 [83]2 years ago
5 0

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\blue\textsf{\textbf{\underline{\underline{Question:-}}}}

Lesedi is x years old, how old was she 5 years ago?

\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}

If a person is 16 years old, how old was that person 5 years ago?

That's right, 11.

How did we get 11? By taking 16 and subtracting 5 from it:-

\sf{16-5=11}

Well, if a person's age is x, and we need to find the person's age 5 years ago, we take the person's age and subtract 5, like in the example above:-

\sf{Lesedi's\:Age:\:x-5}

<h3>Good luck.</h3>

     - - - - - - - - - - - - - - - -- - -  -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Kazeer [188]2 years ago
4 0

(x - 5) years old

Present Age:

  • x years

                         [<u>Ago means before the present</u>]

5 years Ago:

  • (x - 5) years
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Answer:

the answer is 12

Step-by-step explanation:

7x-2y-1. x=3. y=4

7×3-2×4-1

=21-8-1

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What is the slope of the line whose equation has the following solutions? (-1.25,-18,5)(0.25,-30)
labwork [276]

Answer:

m=\frac{-23}{3}

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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
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<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (-1.25, -18.5)

Point (0.25, -30)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{-30+18.5}{0.25+1.25}
  2. Add:                              m=\frac{-11.5}{1.5}
  3. Divide:                          m=\frac{-23}{3}
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Mrs Kennedy is buying pencils for 315 students.

The pencils are sold in boxes of 10.

Therefore the number of pencils she needs to buy should be a multiple of 10, so that she can buy boxes of 10 pencils each.

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so we have to round off 315 to the nearest ten, that's 320.

so then she has to buy 320 pencils

number of boxes she needs - 320 / 10 = 32 boxes of pencils

she only needs pencils for 315 students so she will have 5 extra pencils

she will have to buy 32 boxes

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