5,920 rounded to the nearest thousand

Please help me! i need some to explain the equation for this.

topjm [15]

Answer:

(b) 21.4

Step-by-step explanation:

There are a couple of interesting relations regarding chords and secants and tangents of a circle. With the right point of view, they can be viewed as variations of the same relation, possibly making them easier to remember.

When chords cross inside a circle (as here), each divides the other into two parts. The product of the lengths of the two parts of one chord is the same as the product of the lengths of the two parts of the other chord.

Here, that means ...

7x = 10·15

x = 150/7 = 21 3/7 ≈ 21.4

_____

Additional comment

A secant is a line that intersects a circle in two places. (A tangent is a special case of secant where the two points of intersection are the same point.) When two secants meet outside the circle, there is a special relation between the lengths of the various line segments.

Consider the line segment from the point where the secants meet each other to the far intersection point with the circle. The product of that length and the length to the near intersection point with the circle is the same for both secants.

Here's the viewpoint that merges these two relations:

The product of the lengths from the point of intersection of the lines with each other to the two points of intersection with the circle is the same for each line.

(Note that when the "secant" is a tangent, that product is the square of the distance from the tangent point to the point of intersection with the other line--the distance to the circle multiplied by itself.)

6 0

2 years ago

Read 2 more answers

Laila guesses on all 20 questions of a multiple-choice test. each question has 4 answer choices. what is the probability of a su

Mrrafil [7]

The probability of a success and a failure is as follows,

P(success) = one - fourth

P(failure) = three - fourth

Definition of Probability

The area of mathematics that deals with numerical representations of the likelihood that an event will occur or that a statement is true is known as Probability. An event's probability is a number between 0 and 1, where, 0 generally denotes the event's impossibility and 1 denotes certainty of that event.

Calculating the Probability

The formula for finding the probability of an event to occur is given by,

P = (favorable outcomes)÷(total number of outcomes)

Now, it is given that each multiple choice question consists of 4 choices.

And, out of these four choices, only one answer is true.

Then, if Laila guesses the answer, the probability of choosing the right answer is given by,

P(success) =1/4

Thus, the probability of choosing the wrong answer will be,

p(failure) = 1 - P(success)

⇒ P(failure) = 1 - (1/4)

⇒ P(failure) = 3/4

Learn more on probability here:

brainly.com/question/11234923

#SPJ4

5 0

1 year ago

Find all real solutions of the polynomial equation. (enter your answers as a comma-separated list.) z^4 + z^3 + z^2 + 3z − 6 = 0

viva [34]

I can't figure out a factor for this but graphing it shows x = -2 and +1 as real roots.

3 0

3 years ago

What does 4 raised to the 3/2 power equal?

GarryVolchara [31]

The answer to the question is 8

8 0

3 years ago

Read 2 more answers

What is the volume of the triangular prism? A) 90,000 cm B) 180,000 cm C) 360,000 cm

SOVA2 [1]

Answer:

C) 360,000cm

Step-by-step explanation:

50x 40x 1.8 = 360,000

4 0

3 years ago