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3 years ago

If the blue radius below is perpendicular to the green chord and the segment

Mathematics

2 answers:

saveliy_v [14]3 years ago

8 0

There's the obvious symmetry ultimately because the radii OA and OB are hypotenuses of congruent right triangles. We can just eyeball the figure and see AB=BC, at least approximately, so the full chord AC=9+9=18

Answer: A. 18 units

FinnZ [79.3K]3 years ago

7 0

Answer : The correct option is, (A) 18 units.

Step-by-step explanation :

According to the property of a circle, if a line passes through the center of a circle and also perpendicular to a chord of the circle, then the line bisects (or divided into two equal parts) that chord of a circle.

As we are given:

Line segment AB = 9 units

According to the property of a circle,

Line segment AB = Line segment BC = 9 units

So, Line segment BC = 9 units

Thus, the length of the chord AC will be:

Length of the chord AC = Line segment AB + Line segment BC

Length of the chord AC = 9 units + 9 units

Length of the chord AC = 18 units

Therefore, the length of the chord is, 18 units.

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For problems 13-19, transcribe the following expressions: (Write it out.)

OleMash [197]

The transcribe expression is the expression of the equation in words.

<h3>How to transcribe expression?</h3>

The expression can be transcribe as follows;

1. st = s multiply by t

2. 6 / t - 4 = 6 divided by t minus 4

3. 20 + t² = 20 plus t squared.

4. 50 - x = 50 minus x

5. x - y² = x minus y squared.

6. 24 / 12 + 12 = 24 divided by 12 plus 12

7. xy - 16 = x multiply by y minus 16

learn more on expression here: brainly.com/question/9016747

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8 0

2 years ago

What is 7 29/80 as a mixed number with a decimal

Aleks04 [339]

7+29÷80
7+0.3625
7.3625

6 0

3 years ago

Suppose y varies jointly as x and z. Find y when x=9 and z=-3, if y=-50 when z is 5 and x is -10.

Kobotan [32]

Answer:

y = -27 when x = 9 and z = -3

Step-by-step explanation:

y = kxz is the joint variation where k is a constant

Substitute the knowns in to find k

-50 = k( -10)(5)

-50 = -50k

k = 1

y = xz

Now find y

y = 9*-3

y = -27 when x = 9 and z = -3

6 0

3 years ago

A company pays an average of $14.00 per hour but the hourly salaries of everyone in the company are normally distributed. The st

denpristay [2]

Answer: c.97.5 th percentile : $15.50; 2.5 th percentile : $12.50

Step-by-step explanation:

Since the hourly salaries of everyone in the company are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = hourly salaries

µ = mean salary

σ = standard deviation

From the information given,

µ = $14

σ = $0.75

Looking at the normal distribution table, the z score corresponding to the 2.5 th percentile(0.025) is - 1.96

- 1.96 = (x - 14)/0.75

x - 14 = 0.75 × - 1.96 = - 1.47

x = - 1.47 + 14

x = $12.53

Approximately, x = $12.5

Looking at the normal distribution table, the z score corresponding to the 97.5 th percentile(0.975) is 1.96

1.96 = (x - 14)/0.75

x - 14 = 0.75 × 1.96 = 1.47

x = 1.47 + 14

x = $15.47

Approximately, x = $15.5

3 0

3 years ago

Number 22 is the question

STALIN [3.7K]

Answer:

a^ 17

Step-by-step explanation:

If the bases are the same,

We are multiplying, we can add the exponents

a^b* a^c = a^(b+c)

a^4 * a^3 * a^ 10

a^ (4+3+10)

a^17

6 0

4 years ago