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vredina [299]
3 years ago
8

Solve for x. 8x + 13 12x +7>>

Mathematics
2 answers:
Vladimir79 [104]3 years ago
3 0

ANSWER:

As they are alternate exterior angles, so they must be equal.

8x + 13 = 12x + 7

8x - 12x = 7 - 13

- 4x = - 6

x = 3/2.

Masteriza [31]3 years ago
3 0

Answer:

Solution given:

8x+13+12x+7=180°[exterior angle's sum is supplementary]

20x=180°-20

x=160°/20°

<u> </u><u>x</u><u>=</u><u>8</u><u>°</u><u> </u><u>i</u><u>s</u><u> </u><u>your</u><u> </u><u>answer</u><u>.</u>

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baherus [9]

Answer:

735 mm³

Step-by-step explanation:

49 x 15 = 735

8 0
2 years ago
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a crystal that is 0.12 millimeters long appears to be 60 millimeters long under a microscope what is the power of the microscope
AlladinOne [14]
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2 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
  • [Right Triangles Only] tanθ = opposite over adjacent

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
3 years ago
What is the area of a rectangle whose length is 3x and breadth is 2x
kherson [118]

Answer:

Your answer is <em>6x</em>

Step-by-step explanation:

Given,

          length(l)     = 3x

          breadth(b) = 2x

          area of a rectangle(A) = ?

Now,

A = l*b

A = 3x*2x

A = 6x    ans.

Hope its helpful!

Please mark me as brainlist.

4 0
2 years ago
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Find f(−1) given that f(x)=x3+2x2+3x+4. <br>A. 10 <br>B. -2 <br>C. 2 <br>D. -10
Finger [1]

Answer:

The answer is option C

Step-by-step explanation:

f(x) = x³ + 2x² + 3x + 4

To find f(-1) substitute the value of x that's

- 1 into f(x)

That's

<h3>f( - 1) =  ({ - 1})^{3}  + 2 ({ - 1})^{2}  + 3( - 1) + 4 \\  =  - 1 + 2(1)  - 3 + 4 \\  =  - 1 + 2 - 3 + 4 \\  = 1 - 3 + 4</h3>

We have the final answer as

<h3>f( - 1) = 2</h3>

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8 0
3 years ago
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