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2 years ago

11

In a popular online role playing game, players can create detailed designs for their character's "costumes," or appearance. Leah

sets up a website where players can buy and sell these costumes online. Information about the number of people who visited the website and the number of costumes purchased in a single day is listed below.
31 visitors purchased no costume.
371 visitors purchased exactly one costume.
21 visitors purchased more than one costume.

Based on these results, express the probability that the next person will purchase no costume as a percent to the nearest whole number.

1 answer:

pickupchik [31]2 years ago

8 0

Answer:

7%

Step-by-step explanation:

31 + 371 + 21 = 423

31/423 = 7%

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Find the circumference of a circle with diameter of 10 cm.

Olegator [25]

Answer:

Option C, $31.4\ cm$

Step-by-step explanation:

<u>Step 1: Determine the formula</u>

Formula → $C = 2*\pi *r$

<u>Step 2: Determine the radius</u>

$Radius = \frac{Diameter}{2}$

$Radius = \frac{10\ cm}{2}$

$Radius = 5\ cm$

<u>Step 3: Determine the circumference</u>

$C = 2 * \pi * (5\ cm)$

$C = 10\ cm * \pi$

$C = 31.4\ cm$

Answer: Option C, $31.4\ cm$

7 0

2 years ago

40+4x equivalent express

evablogger [386]

Answer:

do you mean expression??????

Please list me as brainliest so that I could level up!!! thanks

Step-by-step explanation:

40+4x=?????

40+4x = 60-20+6x-2x

40+4x = 40+4x

0=0

equivilant

4 0

3 years ago

Read 2 more answers

In the right triangle ABC with right angle at A , the inradius is 2cm. If the hypothenuse BC=10cm , determine the perimeter and

trasher [3.6K]

Answer: 24cm

Step-by-step explanation:

Inradius = r

c = the hypothenuse

a & b = the other 2 sides of the triangle

Inradius formula: r = 1/2 * (a+b-c)

Plug in what we know.

2 = 1/2 * (a+b-10)

Multiply both sides by 2.

2*2 = 1/2 * (a+b-10) * 2

4 = a+b-10

Add 10 to both sides.

4+10 = a+b-10+10

14 = a+b

Perimeter formula: P=a+b+c

Plug in what we know

(remember a+b=14).

P=14 + 10

P = 24

3 0

3 years ago

Solve the quadratic equation by using a graphic approach. Round your answer to the hundredths place.

den301095 [7]

Answer:

x = 3.24, x = -1.24

Step-by-step explanation:

The standard form for a quadratic equation is $ax^2+bx+c=0$ . For your equation a = 1, b = -2, c = -4. The quadratic formula you will be using is $x=\frac{-b\pm \sqrt{b^{2} -4ac} }{2a}$ .

Plug in a = 1, b = -2, and c = -4 into the formula.

$=\frac{-\left(-2\right)\pm \sqrt{\left(-2\right)^2-4\cdot \:1\cdot \left(-4\right)}}{2\cdot \:1}$

We'll do the top part first:

$\sqrt{\left(-2\right)^2-4\cdot \:1\cdot \left(-4\right)}$

Apply rule $- (-a) = a$

$=\sqrt{\left(-2\right)^2+4\cdot \:1\cdot \:4}$

Apply exponent rule $(-a)^{n} =a^n$ if $n$ is even

$(-2)^2=2^2$

$=\sqrt{2^2+4\cdot \:1\cdot \:4}$

Multiply the numbers

$=\sqrt{2^2+16}$

$2^2=4$

$=\sqrt{4+16}$

Add

$=\sqrt{20}$

The prime factorization of 20 is $2^2*5$

20 divides by 2. <em>20 = 10 * 2</em>

<em /> $=2*10$ <em />

10 divides by 2. <em>10 = 5 * 2</em>

<em /> $=2* \:2*5$ <em />

2 & 5 are prime numbers so you don't need to factor them anymore

$=2*2*5$

$=2^2*5$

$=\sqrt{2^2\cdot \:5}$

Apply radical rule $\sqrt[n]{ab} =\sqrt[n]{a} \sqrt[n]{b}$

$=\sqrt{5}\sqrt{2^2}$

Apply radical rule $\sqrt[n]{a^{n} } =a$ ; $\sqrt{2^2} =2$

$=2\sqrt{5}$

$=\frac{-\left(-2\right)\pm \:2\sqrt{5}}{2\cdot \:1}$

Because of the $\pm$ you have to separate the solutions so that one is positive and the other is negative.

$x=\frac{-\left(-2\right)+2\sqrt{5}}{2\cdot \:1},\:x=\frac{-\left(-2\right)-2\sqrt{5}}{2\cdot \:1}$

Positive x:

$\frac{-\left(-2\right)+2\sqrt{5}}{2\cdot \:1}$

Apply rule $-(-a)=a$

$=\frac{2+2\sqrt{5}}{2\cdot \:1}$

Multiply

$=\frac{2+2\sqrt{5}}{2}$

Factor $2+2\sqrt{5}$ and rewrite it as $=2\cdot \:1+2\sqrt{5}$ . Factor out 2 because it is the common term. $=2\left(1+\sqrt{5}\right)$ .

$=\frac{2\left(1+\sqrt{5}\right)}{2}$

Divide 2 by 2

$x=1+\sqrt{5}$ or $x=3.24$ (You'll probably have to use a calculator for the square root of 5)

^Repeating the process of positive x for negative x in order to get $x=1-\sqrt{5}$ or $x=-1.24$

4 0

3 years ago

A triangle has an area of 20 cm2 and a height of 5 cm. How long id the base?

RideAnS [48]

The base of given triangle is 8 cm.

Further explanation:

The area of triangle is calculated by using two methods

Hero's formula
Base and Height

Hero's formula requires all three sides of triangle while we can use only base and height in second formula.

Given

$A = 20\ cm^2\\h = 5\ cm$

As the area of triangle and height are given, then

$A = 0.5*b*h\\20=0.5*b*5\\20=2.5b\\b=\frac{20}{2.5}\\b=8\ cm$

The base of given triangle is 8 cm.

Keywords: Area of triangle, base, height

Learn more about area of triangle at:

#learnwithBrainly

5 0

3 years ago