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mezya [45]
3 years ago
11

28 in 21 in., 20 in. Is this a right triangle?

Mathematics
1 answer:
ankoles [38]3 years ago
7 0

Answer:

No, it is not a right triangle.

Step-by-step explanation:

The simplest way to determine is testing out the numbers with Pythagorian theorem.

If it complies with the theorem, it is a right triangle.

let's assume c = 28, b = 21, and a = 20

the longest side is the hypotenuse so side c (28 in) will be the hypotenuse.

According to the Pythagorian theorem, the square of the length of hypotenuse must equal to the sum of squares of other two sides.

check:

c^2 = 28^2 = 784

a^2 + b^2 = 21^2 + 20^2 = 841

because c^2 is not equal to a^2 + b^2, the triangle is not a right triangle.

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8 = m/4 is equivalent to m/4 = 8:
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Multiply both sides of m/4 = 8 by 4:
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4×8 = 32:
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What is the domain of the function (-1,1) (0,0) (1,2)
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{-1,0,1}

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Ayana works at Eastern Community College as a math teacher. She will
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  a.  $2622.00

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After taking out federal health insurance taxes, Ayana's pay for the year will be ...

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Solve the equation for x^2=<br> 625
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Answer:

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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
  • Left to Right

Equality Properties

<u>Algebra I</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

x² = 625

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

  1. Square root both sides:                    x = ±25

<u>Step 3: Check</u>

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

x = -25

  1. Substitute in <em>x</em>:                    (-25)² = 625
  2. Exponents:                          625 = 625

Here we see that 625 does indeed equal 625.

∴ x = -25 is a solution to the equation.

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Here we see that 625 does indeed equal 625.

∴ x = 25 is a solution to the equation.

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3 years ago
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