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Viktor [21]
3 years ago
12

Please help, would be greatful :)

Mathematics
1 answer:
lana [24]3 years ago
5 0

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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fgiga [73]

Answer:

Step-by-step explanation:

x+5=0

x=-5

-5) 16   80   1    5

  |       -80   0  -5

 ____________

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8 0
3 years ago
Help i dont understand how to do this the question is "Put your answer in decimal form."
beks73 [17]

Answer:

x = 2.5

Step-by-step explanation:

Hypotenuse ² = opposite ² + adjacent ²

(x + 4)² = x² + 6²

x² + 8x + 16 = x ² + 6²

x² + 8x + 16 - x² = 6²

8x + 16 = 36

8x = 36 - 16

8x = 20

x = 20/8

x = 2.5

5 0
3 years ago
Please answer correctly !!!!!!! Will mark Brianliest !!!!!!!!!!!
icang [17]

Answer:

x=-2\\x=2

(You only need to give one solution)

Step-by-step explanation:

We have the following equation

(x^2+1)^2-5x^2-5=0

First, we need to foil out the parenthesis

x^4+2x^2+1-5x^2-5=0

Now we can combine the like terms

x^4-3x^2-4=0

Now, we need to factor this equation.

To factor this, we need to find a set of numbers that add together to get -3 and multiply to give us -4.

The pair of numbers that would do this would be 1 and -4.

This means that our factored form would be

(x^2-4)(x^2+1)=0

As the first binomial is a difference of squares, it can be factored futher into

(x^2+1)(x+2)(x-2)=0

Now, we can get our solutions.

The first binomial will produce two complex (Not real) solutions.

x+2=0\\\\x=-2

x-2=0\\\\x=2

So our solutions to this equation are

x=-2\\x=2

3 0
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castortr0y [4]

Answer:

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Step-by-step explanation:

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3 years ago
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