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borishaifa [10]
3 years ago
14

Tiffany’s $40.00 allowance is reduced $1.25 every time she forgets to clean her room.

Mathematics
1 answer:
Ugo [173]3 years ago
6 0

Answer:

8.75, it can be rounded down to 8, or it can be moved up to 9. Either answer should be applicable!

Step-by-step explanation:

Hope this helped, sorry if it didn't!

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Copland competes in 27 swimming events this season. He wins either first place or second place in each event. Copland has 3 more
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5

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Find two acute angles that satisfy the equation sin(2x + 7) = cos(x + 23). Check that your answers make
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Step-by-step explanation:

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Is 3x^2 − y = 5 a function or not a function
kakasveta [241]

hi!

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8 0
3 years ago
Please help, would be greatful :)
lana [24]

Answer:

x ≈ 22.0°

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

<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 = <em>x°</em>

Opposite Leg = 3

Hypotenuse = 8

<u>Step 2: Find </u><em><u>x°</u></em>

  1. Substitute [Sine]:                    sinx° = 3/8
  2. Inverse trig:                             x° = sin⁻¹(3/8)
  3. Evaluate:                                 x = 22.0243°
  4. Round:                                     x ≈ 22.0°
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3 years ago
Which expression is equivalent to cos(4a)?
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1-8sin^2 Acos^2A or 1-8sin^2A
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