MATHEMATICS HIGH SCHOOL

(PLEASE ANSWER + BRAINLIEST ANSWER!!)The sector of a circle shown to the left has its center at point O. The arc XYZ has length 10.8, and the central angle XOZ has measure 1.8 radians. What is the radius length, r, of the sector?

A. √12

B. 6

C. 50/3

D. 19.44
(PLEASE ANSWER + BRAINLIEST ANSWER!!) The sector of a circle - 1

Answers

Answer 1
Answer:

The arc length, radius and the included angle are related as

r\theta=\widehat {XYZ} where \theta is in radians.

The radius r is given by

Correct choice is (B).
Answer 2
Answer: B is the answer hope this helps and please mark me as brainliest 

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During the financial crisis of 2008, the price of a barrel of Brent crude oil fell a high of $140 per barrel to around $50 per barrel. What is the percent decrease in the price of oil that occurred during this period.

Answers

Answer:

  decrease of 64.3%

Step-by-step explanation:

Percentage change can be calculated from ...

  pct change = ((new value)/(original value) -1) × 100%

  = (50/140 -1) × 100%

  = (-9/14)×100% = -64 2/7% ≈ -64.3%

The price of crude fell about 64.3% in that period.

Using the defects method, which of these relationships represents the Law of Cosines if the measure of the included angle between the sides a and b of ∆ABC is more than 90°? A. area of square c2 = -area of square a2 – area of square b2 + area of defect1 + area of defect2 B. area of square c2 = area of square a2 + area of square b2 + area of defect1 – area of defect2 C. area of square c2 = area of square a2 + area of square b2 – area of defect1 – area of defect2 D. area of square c

Answers

PLATO: The answer is D area of square c2 = area of square a2 + area of squareb2 + area of defect1+ area of defect2

Answer:

D

Step-by-step explanation: Just did it

If triangle ABC is similar to triangle DEC solve for x

Answers

That make no sense, A = D, B = E, and C = C.

Answer:

?

Step-by-step explanation:

It is given that y is directly proportional to x raise to power n and write down the value of n when y metre square is area of a square of length x metre

Answers

Answer:

The correct answer is 2.

Step-by-step explanation:

Given y is directly proportional to x raised to the power n.

⇒ y \alphax^(n)

⇒ y = p × x^(n) with p being the constant of proportion.

Let y be the area of a square of side x meters.

Therefore y = x^(2) square meters.

Now according to the given problem, comparing both the above mentioned equation we get the value of n equal to 2.

When two musical notes are a “sixth” apart, the frequency of the lower note is 3/5 the frequency of the higher note. Using f as the frequency of the higher note, write an expression for the frequency of the lower note. HELP!1. f - 2/5

2. 3/5 f

3. 2/5 f

4. 3/5 + f

Answers

The correct expression for the frequency of the lower note when two musical notes are a sixth apart is: 3/5 f

Given that two musical notes are a “sixth” apart, the frequency of the lower note is 3/5 the frequency of the higher note.

We need to determine the expression for the frequency of the lower note.

When two musical notes are a "sixth" apart, it means that there are five whole steps or intervals between the two notes.

In music theory, each whole step corresponds to multiplying the frequency by a constant factor.

If we denote the frequency of the higher note as f, then the frequency of the lower note, which is 3/5 times the frequency of the higher note, can be calculated by multiplying f by 3/5.

Therefore, the correct expression for the frequency of the lower note is 3/5 f.

Learn more about musical notes click;

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Answer:

2. 3/5 f

Step-by-step explanation:

the lower note is the product of it's fractional part and the frequency of the higher note.

System of equations
2x+4y=8
X=3y-6

Answers

2x + 4y = 8
x = 3y - 6

2x + 4y = 8
2 * ( 3y - 6 ) + 4y = 8
6y + 12 + 4y = 8
8y = 8 - 12
8y = - 4
y = -4 / 8
y = -1 / 2
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