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Zanzabum
2 years ago
6

Find the length of the missing side. Express your answer in simplest radical form.

Mathematics
1 answer:
serg [7]2 years ago
3 0

Answer:

D

Step-by-step explanation:

you use the Pythagorean theorem

It states that the area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides.

so mathematically

a2+b2=c2

a and b being the short sides and C being the Hypotenuse

so in our case

a= 10 cm

b= ?

c= 18

a2+b2=c2

(10cm)2+(b)2=(18cm)2

100cm2+b2=324cm2

b2=324cm2-100cm2

b2=224cm2

*putting both sides under a square root*

b=4sqrt14cm

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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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Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

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Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = -4x + 1

11y = x + 146

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

<em>Substitution</em>

  1. Substitute in <em>y</em>:                                                                                                   11(-4x + 1) = x + 146
  2. Distribute 11:                                                                                                     -44x + 11 = x + 146
  3. [Addition Property of Equality] Add 44x on both sides:                              11 = 45x + 146
  4. [Subtraction Property of Equality] Subtract 146 on both sides:                  -135 = 45x
  5. [Division Property of Equality] Divide 45 on both sides:                             -3 = x
  6. Rewrite/Rearrange:                                                                                             x = -3

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