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exis [7]
3 years ago
12

The cost of an item is $75. What will the total cost be with 9% tax?

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
7 0

Answer:

81.75

Step-by-step explanation:

75*1.09 = 81.75

chubhunter [2.5K]3 years ago
4 0

Answer:$81.75

Step-by-step explanation:

9% of 75 is 6.15, add that to 75 and the answer is 81.75

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3 years ago
Find the value of x.round to the nearest tenth
Nata [24]

Answer:

\displaystyle x \approx 8.2

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
  • Subtraction Property of Equality<u> </u>

<u>Trigonometry</u>

[Right Triangles Only] SOHCAHTOA

[Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Identify Variables</u>

Angle θ = 23°

Opposite Leg = <em>x</em>

Hypotenuse = 21

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

  1. Substitute in variables [sine]:                                                                         \displaystyle sin(23^\circ) = \frac{x}{21}
  2. [Multiplication Property of Equality] Isolate <em>x</em>:                                              \displaystyle 21sin(23^\circ) = x
  3. Rewrite:                                                                                                           \displaystyle x = 21sin(23^\circ)
  4. Evaluate:                                                                                                         \displaystyle x = 8.20535
  5. Round:                                                                                                             \displaystyle x \approx 8.2
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2 years ago
Find the lenght of the third side of the right triangle
Semenov [28]

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8

Step-by-step explanation:

using a^2 = b^2 = c^2  a= 6 c=10

5 0
3 years ago
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