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Ksju [112]
2 years ago
15

Here is a right angled triangle work out the value of x using trigonometry

Mathematics
1 answer:
Zolol [24]2 years ago
8 0

~~~~~\sin 30^{\circ} = \dfrac{\text{Perpendicular}}{\text{Hypotenuse} }\\\\\\\implies \dfrac 12 = \dfrac{8}x\\\\\\\implies x =  8\cdot2\\\\\\\implies x = 16 ~ \text{cm.}

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What is the quotient (7x^(2))/(2x+6)-:(3x-5)/(x+3)
Irina18 [472]

Answer:

5.525

Step-by-step explanation:

1. (7x^(2))/(2x + 6) -:(3x - 5) / (x + 3) Solve Bold

   (7x^(2)) / (2x + 6) -:(3x - 5) / (x + 3)

2. 49x / 8x - (-2x) / 3x Solve Bold

   49x/8x-(-2x)/3x

3. 6.125 - .6 Solve Bold

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5 0
2 years ago
**Giving away 20 points**. I need to know the arc length for EF and the area of sector EOF please:) (also plz show work thanks!!
LiRa [457]
Let us for a few seconds nevermind there's a circle at all, so we only really have a triangle by itself.

now, EF = 18, wait a second!  EF is the base of the triangle, and h = 10.725, wait a minute!!  "h" is the height of the triangle.

so, what's the area of a triangle whose base is 18 and has a height of 10.725?  yeap, we knew you'd know that one.

what's the length of the arcEF?  well, we know the central angle of ∡FOE is 80°, well, arc's get their angle measurement from the central angle they're in, so if ∡FOE is 80°, so is arcEF then.
3 0
3 years ago
Can somebody help me?
melisa1 [442]
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5 0
3 years ago
Read 2 more answers
Which scale of measurement is being used if assigning numbers based on different professional affiliation (e.g., counselors, soc
hammer [34]

Answer: The answer is Nominal scale

Step-by-step explanation:

  • <em>Scale of Measurement</em> refer to ways in which variables/numbers/information are categorized

  • <em>Nominal Scale</em> is a measurement scale, in which numbers serve as “tags”, to identify or classify an object. it is usually use for non-quantitative variables. Some examples of variables that use nominal scales are language spoken, sex, the football club you support, profession etc

8 0
3 years ago
4x + 6 - 11 help needed
HACTEHA [7]

Answer:

<h2>4x-5</h2>

Step-by-step explanation:

4x+6-11\\\\\mathrm{Add/Subtract\:the\:numbers:}\:6-11=-5\\=4x-5

3 0
3 years ago
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