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Aleks [24]
4 years ago
7

Given the function f(x) = 3x – 7, find f(-8).

Mathematics
1 answer:
stepladder [879]4 years ago
6 0
Just plug the number in.

f(-8)=3(-8)-7=-31.

f(-8) equals -31.
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Solve the equation 6 = -9 – 6x for x.
Evgesh-ka [11]

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a. -5/2

Step-by-step explanation:

8 0
3 years ago
Please help, would be greatful :)
tankabanditka [31]

Answer:

x ≈ 25.5°

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
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Step-by-step explanation:

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

Angle θ = <em>x</em>°

Opposite Leg = 10

Hypotenuse = 21

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

  1. Substitute [tangent]:                    tanx° = 10/21
  2. Inverse trig:                                  x° = tan⁻¹(10/21)
  3. Evaluate:                                      x = 25.4633°
  4. Round:                                          x ≈ 25.5°
8 0
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z < ¾

Step-by-step explanation:

Or z < 0.75

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