Which statements are true? Check all that apply.
A random group of high school and college students
were asked if they study with or without listening to
music. The frequency table below shows the results of
the poll.
The table shows conditional relative frequencies by
column
The table shows conditional relative frequencies by
row.
Music
No Music
Total
High
School
68
65
133
The conditional relative frequency that someone is
in high school, given that the person prefers to
study without music, is about 0.56.
If someone prefers to study with music, the
probability the person is in college is about 63%
If someone prefers to study with music, the
probability the person is in HS is about 44%.
College
85
51
136
Total
153
116
269
Intro
Done

Answer:

17.32 cm

Step-by-step explanation:

According to Viviani's theorem, the sum of the distances from an interior point to the sides of an equilateral triangle equals the height of the triangle.

In an equilateral triangle ΔABC, if U is an interior point, the sum of distances from  U to each sides of ΔABC = height of triangle. Since each side of the triangle is 20 cm, we can find the height of the triangle (h)

This can be represented by a triangle with hypotenuse 20 cm, a leg of 10 cm (20/2) and the other leg h cm. Using Pythagorean theorem:

h² + 10² = 20²

h² = 400 - 100 = 300

h = √300 = 17.32 cm

Therefore, the sum of distances from  U to each sides of ΔABC is 17.32 cm

Answer:

x = 8

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + 6² = 10²

x² + 36 = 100 ( subtract 36 from both sides )

x² = 64 ( take the square root of both sides )

x = [tex]\sqrt{64}[/tex] = 8

Answer.

Answer is 9

Step-by-step explanation:

Multiply height by with.

1,1x8,1

then do whatever that equals times 2,5 and you should get your answer.

Answer:

30 units

Step-by-step explanation:

8/6=6/NW

36=NW8

NW=4.5

4.5^2+6^2=OW^2

56.25=OW^2

OW=7.5

7.5+10+12.5=30

Answer:

30

Step-by-step explanation:

Answer:

$57.81

Step-by-step explanation:

74/128 = 57.8125, which rounds to 57.81

Answer:

The probability of picking a black card at random, from a deck with 3 black cards and 7 red ones is 0.3.

Step-by-step explanation:

We will assume that we have 3 black cards and 7 black cards, for a total of 10 cards. Since we are taking one card at random, we can assume that each card is equally likely to be drawn. We have the following event A: The drawn card is a black. We will find the probability of A as counting the number of outcomes that make A to occur and divide it by the total number of possibilities. We are drawing one card, so we have 10 possibilities to be picked. Out of those 10, only 3 cards are black, hence we have 3 possibilites of picking a black card.

Then,

P(A) = 3/10 = 0.3.

Answer:

0.435 Got it from Khan

Step-by-step explanation:

Hint #11 / 3

All of the probabilities in a valid probability distribution must add up to 111.

Hint #22 / 3

Solve for the missing probability:

\begin{aligned} 0.475+\text{?}+0.090&=1 \\\\ 0.565+\text{?}&=1 \\\\ \text{?}&=0.435 \end{aligned}

0.475+?+0.090

0.565+?

?

​

=1

=1

=0.435

​

Hint #33 / 3

The answer:

P\left(Y=1\right)=0.435P(Y=1)=0.435

Answer:

40

Step-by-step explanation:

To find the common ratio, take the second term and divide by the first term

10/5 = 2

We multiply the last term given by the common ratio to get the next term

20* 2= 40

Answer:

18

Step-by-step explanation:

The midsegment is calculated as

[tex]\frac{sumofbases}{2}[/tex] = [tex]\frac{12+24}{2}[/tex] = [tex]\frac{36}{2}[/tex] = 18

Answer:

9.90

Step-by-step explanation:

a2+b2=c2

(7)2+(7)2=c2

49+49=c2

98=c2

√98=√c2

9.90=c

Answer:

A) is the last option 5/7.

Step-by-step explanation:

B) the third and last option. 7/-9 and -7/9

Answer:

x = 180 - 76 - 63

x = 41°

Step-by-step explanation:

Answer:

x =41

Step-by-step explanation:

The three angles form a straight line so they add to 180 degrees

76+ x+ 63 = 180

Combine like terms

139 + x = 180

Subtract 139 from each side

139-139 + x = 180-139

x =41

Answer:for the first one it is 5/9

and for the second one it is 4/9

Step-by-step explanation:

Answer:

For first 0.56 and for second 0.44

Plz mark me brainliest

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

(3x - 3)(x - 2)

Step-by-step explanation:

3x² - 9x + 6

3x² - 6x - 3x + 6

3x(x - 2) - 3(x - 2)

(3x - 3)(x - 2)

Answer:

D

Step-by-step explanation:

kyles equation has a negative slope, but the scatter plot shows a positive correlation

The statement best summarizes why Kyle is incorrect:

Kyle's equation has a negative slope, but the scatterplot shows a positive correlation.

A scatter plot is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are coded, one additional variable can be displayed.

How to solve?

As we can conclude that;

Kyle's equation has a negative slope, but the scatter plot shows a positive correlation

Learn more about Scatter Plot:

https://brainly.com/question/14777758

#SPJ2

Answer:

u = 10

Step-by-step explanation:

10 + 6u = 7u

10 = u

Just subtract 6u on both sides.

Answer:

radius = 4 cm

Step-by-step explanation:

To find the length of the radius, we will follow the step below;

First, write down the formula for finding the volume of a cylinder

v=πr²h

where v is the volume of a cylinder

r is the radius      and

h is the height of the cylinder

from the question given,

v=125.6    and h = 10 cm

we can now proceed to insert the values into the formula and solve for r

note that π is a constant which is equal to 3.14

v=πr²h

125.6 =3.14×r×10

125.6 =31.4 r

Divide both-side of the equation by 31.4

125.6/31.4 =31.4 r/31.4

4 = r

r =4 cm

The length of the radius = 4 cm

Answer:

nhyh

Step-by-step explanation:

h

mhhhygvvvx VC ghv h h h b

Answer:

x ≈ 33

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan67° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{x}{14}[/tex]

Multiply both sides by 14

14 × tan67° = x, thus

x ≈ 33 ( to the nearest whole number )

Answer:

5

Step-by-step explanation:

Vertices are just corners (they try to use fancy words to try to confuse students lol). If you count all of the corners/vertices, you will find that there are a total of 5.

Answer:

the square root of 306 is

17.49

Answer:

1: 30 degrees

Step-by-step explanation:

In Physics, we have the law of reflection. This law states that when light rays hit the smooth surface of mirror or any smooth polished surface, the angle of incidence is equivalent to the angle of reflection.

Mathematically:

Angle of incidence = Angle of reflection

From the above question, the angle of incidence is on a smooth plane mirror = 30°

Since:

Angle of incidence = Angle of reflection

30° = 30°

Therefore, based on the law of reflection, the Angle of reflection = 30°

Answer:

Hello,

10,070

Step-by-step explanation:

100% - 12% = 88% = 0.88

28,000 x 0.88^8 = 10,069.76...

Answer:

1/4

Step-by-step explanation:

A checkerboard is 1/2 red and 1/2 black.

There are 6 sides on a die, 3 of which are less than 4 (1, 2, and 3).

So the total probability is (1/2) (3/6) = 1/4.

Answer:

3.6 ounces.

Step-by-step explanation:

4 one half ounces = 2 ounces of paint.

So Albert uses 2 ounce and Tony uses 2 * 0.8 = 1.6 ounces.

So together they use 2+ 1.6 = 3.6 ounces.

Answer:

8.1 ounces

Step-by-step explanation:

Answer:

The value of the car in 8 years is : v(t)=69,326 rounded to the nearest dollar, yet if not rounded to the nearest dollar then it is 69,326.968936

Step-by-step explanation:

v(t)=28,000(1.12)^8

v(8)=69,326

Answer:

75w + 15s > 300

w+s ≤20

Step-by-step explanation:

writing assignments (w)

science assignments (s)

the time is more than 300 minutes

75w + 15s > 300

at most 20 assignments

w+s ≤20

Answer:

-1.00000425998

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

= [tex]\sf{ = \sqrt[3]{3375} }[/tex]

= Factors of 3375 = (3×3×3)×(5×5×5) = 3×5 = 15