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2 years ago

HELPPP FAST PLEASE

Mathematics

2 answers:

alexgriva [62]2 years ago

7 0

Answer:

A. True

Step-by-step explanation:

Given:

O is the center of the Circle

Chord BC is the line segment passing from the center of circle

Chord: It is a line segment whose end points lies on the circle.

Diameter: It is defined as a line segment passing from the center of the circle whose end point lies on the circle.

Hence chord BC is a diameter of the circle as passes from the center O of the circle and its end points B,C lies on the circle.

Hence the statement is TRUE

timofeeve [1]2 years ago

5 0

Your answer is true !! :)

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Rationalize the denominator. 5 / 7- squareroot 6 ? <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B5%7D%7B7%20-%20%20%5Csq

MatroZZZ [7]

Answer:

$\frac{5\sqrt{6} +35}{43}$

Step-by-step explanation:

Step 1: Multiply by conjugate

5/(7 - √6) x (7 + √6)/(7 + √6)

5(7 + √6)/43

Step 2: Distribute

(35 + 5√6)/43

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3 years ago

A distribution of measurements is relatively mound-shaped with a mean of 40 and a standard deviation of 15. Use this information

MArishka [77]

Answer:

The proportion of measurements between 25 and 55

P( 25 ≤ X≤ 55) = 0.6826

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 40

Given that standard deviation of the Population = 15

Let 'x' be the random variable in normal distribution

Let 'X' = 25

$Z = \frac{x-mean}{S.D} = \frac{25-40}{15} = -1$

Let 'X' = 55

$Z = \frac{x-mean}{S.D} = \frac{55-40}{15} = 1$

Step(ii):-

The probability that between 25 and 55

P( 25 ≤ X≤ 55) = P( -1≤z≤1)

= A(1) - A(-1)

= A(1) + A(1)

= 2 × A(1)

= 2× 0.3413

= 0.6826

The proportion of measurements between 25 and 55

P( 25 ≤ X≤ 55) = 0.6826

Final answer:-

The proportion of measurements between 25 and 55

P( 25 ≤ X≤ 55) = 0.6826

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3 years ago

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dedylja [7]

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3 years ago

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anyanavicka [17]

Answer:

Step-by-step explanation:

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3 0

3 years ago

Read 2 more answers