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3 years ago

15

In 2010, the number of participants in a checkers tournament was 2.6x10^4 people. In 2013, the number of participants in a check

ers tournament was 5.2x10^5 people. By what factor did the number of participants increase from 2010 to 2013?

1 answer:

andrezito [222]3 years ago

6 0

10^4*2.6= 26000
10^5*5.2=520000
520000-26000
=494000

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Find the value of a.<br> A. 58<br> B. 130<br> C. 86<br> D. 65

tatiyna

Answer:

$C. \ \ \ 86$ °

Step-by-step explanation:

1. Approach

In order to solve this problem, one must first find a relationship between arc (a) and arc (c). This can be done using the congruent arcs cut congruent segments theorem. After doing so, one can then use the secants interior angle to find the precise measurement of arc (a).

2. Arc (a) and arc (c)

A secant is a line or line segment that intersects a circle in two places. The congruent segments cut congruent arcs theorem states that when two secants are congruent, meaning the part of the secant that is within the circle is congruent to another part of a secant that is within that same circle, the arcs surrounding the congruent secants are congruent. Applying this theorem to the given situation, one can state the following:

$a = c$

3. Finding the degree measure of arc (a),

The secants interior angle theorem states that when two secants intersect inside of a circle, the measure of any of the angles formed is equal to half of the sum of the arcs surrounding the angles. One can apply this here by stating the following:

$86=\frac{a+c}{2}$

Substitute,

$86=\frac{a+c}{2}$

$86=\frac{a+a}{2}$

Simplify,

$86=\frac{a+a}{2}$

$86=\frac{2a}{2}$

$86=a$

5 0

3 years ago

Y is directly proportional to the square of x.

RUDIKE [14]

Answer:

The value of y is 847 for x=11

Step-by-step explanation:

It is given that y is directly proportional to the square of x

This can be written mathematically as:

$y \propto x^2$

Removing the proportionality symbol introduces a proportionality constant in the equation which is denoted by k

$y = kx^2$

Given that "When x is 5, y is 175"

$175 = k (5)^2\\175 = k*25\\k = \frac{175}{25}\\k = 7$

Putting the value of k

$y = 7x^2$

Now putting x = 11

$y = 7(11)^2\\y = 7 * 121\\y = 847$

Hence,

The value of y is 847 for x=11

5 0

2 years ago

A certain medicine is given in an amount proportional to a patient's body weight. Suppose a patient weighing

Marizza181 [45]

Set up a proportion.

pounds / milligrams of medicine

195/279 = 130/x

195x = 279 times 130
195x =36,270
x = 36,270/195
x = 186

A patient weighing 130 pounds needs 186 milligrams of medicine.

6 0

3 years ago

Please take a look at the question. Please explain and type your explaination. Please make it quick as possible. Thankyou!

Firlakuza [10]

Answer:

Yes, it's true

Step-by-step explanation:

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2 years ago

What are all natural numbers using the digits 7 , 0 ,6 without repeating the numbers

Lelu [443]

Answer:

Step-by-step explanation:

The natural numbers can be :

076

067

706

760

607

and 670

Hope this helps

plz mark as brainliest!!!!!!

7 0

2 years ago