Suppose a high school student is selected at random.Let event A = junior and event B = earbuds. Are events A and B independent

Answers

Answer 1

Answer:

yes

Step-by-step explanation:

independence means the object or so are completely unreliant of eachother or does not have order.

for example a dependent situation would be sports players getting picked because there is order.


Related Questions

Karl wants to rent a bike for at most $55. He can rent a bike for $7 per hour plus a $9.50 flat fee. Any portion of an hour is charged as a full hour.
What is the maximum number of hours Karl can Rent the bike?

Answers

Answer 6 hours
Reason
7x + 9.50 = 55
-9.50. -9.50 subtract from both sides
_____________
7x = 45.50

Divide both sides by 7 to isolate x
X = 6.5
So he can rent for 6 hours (the .5 would be charged as a full hour per the problem)

Five identical machines cover a total of 32 1/2 ft.² of floor space how much floor space occupied by each machine

Answers

Using proportions, it is found that the floor space occupied by each machine is of 6.5 ft².

What is a proportion?

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, five identical machines cover a total of 32 1/2 ft² = 32.5 ft², hence the space occupied by each machine is given as follows, applying the proportion:

32.5 ft²/5 = 6.5 ft².

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3p+6
Which phrase represents the algebraic expression 7p-9?

Answers

Answer:

The answer is the sum of three times a number and six, divided by the difference of seven times the number and nine

Step-by-step explanation:

3p = three x a number

7p = seven x a number

3p+6 = sum of three x a number plus six

7p-9 = difference of seven x the number minus nine

(3p+6)/(7p-9) = sum of three times x number plus six, divided by the difference of seven x the number - nine

30 POINTS FOR THE BRAINLIEST!!!!!


Find the exact value of x and y. (Do not round - no decimals)


Answer x = ____ units

Answer y = ____ units


Explain how you found side length measure below. Be sure to show all of your work.

Answers

The triangle is (90 degrees) as we can see. We have found one side of three, which is equal to (60 degrees). All sides of a triangle add up to (180 degrees).
To find y and x, subtract 180 degrees from 60 degrees (180-60=120 degrees)
Remember, the triangle is a 90 degree angle, so one of the angles that add up to 120 is already 90 degrees, subtract 120-90 to get 30. Angle x is 30
To check: all triangles = 180 degrees
60+90+30= 180
You have now completed this question woohooooo time for me to continue my math, wish you all the best random internet stranger

Monitors manufactured by TSI Electronics have life spans that have a normal distribution with a variance of 4,000,000 and a mean life span of 19,000 hours. If a monitor is selected at random, find the probability that the life span of the monitor will be more than 20,179 hours. Round your answer to four decimal places.

Answers

Using the normal distribution, it is found that there is a 0.2776 = 27.76% probability that the life span of the monitor will be more than 20,179 hours.

Normal Probability Distribution

The z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

[tex]\mu = 19000, \sigma = \sqrt{4000000} = 2000[/tex]

The probability that the life span of the monitor will be more than 20,179 hours is one subtracted by the p-value of Z when X = 20179, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{20179 - 19000}{2000}[/tex]

Z = 0.59.

Z = 0.59 has a p-value of 0.7224.

1 - 0.7224 = 0.2776.

0.2776 = 27.76% probability that the life span of the monitor will be more than 20,179 hours.

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What’s the result of adding these two equations? Please help

Answers

Answer:

u should subract those not add

A composite figure is shown.

Diagram shows a composite shape formed by placing a cube before a square prism and a square pyramid next to it that share a common square base. Cube has sides labeled 6 feet. Length of the square prism is 20 feet and height of the pyramid is 4 feet.
What is the surface area for each part of the figure? What is the total surface area of the figure?

The surface area of the pyramid is
square feet.

The surface area of the square prism is
square feet.

The surface area of the cube is
square feet.

The total surface area is
square feet.

Answers

The surface area of the pyramid is 60 square feet

The surface area of the square prism is 480 square feet

The surface area of the cube is 180 square feet

The total surface area is 720 square feet

Area of Composite figures

From the question, we are to calculate the surface area of each part of the composite figure

For the cube

Surface area of a cube is given by

[tex]S = 6l^{2}[/tex]

Where [tex]l[/tex] is the length of a side

But only have 5 surfaces of the cube are part of the composite figure

∴ Surface area of the cubic part of the figure = [tex]5l^{2}[/tex]

From the given information,

[tex]l = 6 \ feet[/tex]

∴ Surface area of the cubic part of the figure = 5 × 6²

Surface area of the cubic part of the figure= 180 square feet

For the square prism

The surface area of a square prism is given by the formula,

[tex]S = 2l^{2} + 4lh[/tex]

Where [tex]l[/tex] is the length of the sides and

[tex]h[/tex] is the height

But the square surfaces are not part of the surface of the figure

∴ Surface area of the square prism in the figure = [tex]2l^{2} + 4lh - 2l^{2}[/tex]

Surface area of the square prism in the figure = [tex]4lh[/tex]

From the given information,

[tex]l = 6 \ feet[/tex]

[tex]h = 20 \ feet[/tex]

Thus,

Surface area of the square prism part of the figure = 4×6×20

Surface area of the square prism part of the figure = 480 square feet

For the pyramid

The pyramid is a square pyramid

The surface area of a square pyramid is given by

[tex]S = l^{2} + 2l\sqrt{\frac{l^{2} }{4}+h ^{2} }[/tex]

Where [tex]l[/tex] is the base length

and [tex]h[/tex] is the height of the prism

But the square base is not part of the surface of the figure

∴ Surface area of the pyramid part of the figure = [tex]l^{2} + 2l\sqrt{\frac{l^{2} }{4}+h^{2} }\ - ( l^{2})[/tex]

Surface area of the pyramid part of the figure = [tex]2l\sqrt{\frac{l^{2} }{4}+h^{2} }[/tex]

From the given information,

[tex]l = 6 \ feet[/tex]

[tex]h = 4 \ feet[/tex]

∴ Surface area of the pyramid part of the figure = [tex]2(6)\sqrt{\frac{6^{2} }{4}+4^{2} }[/tex]

= [tex]12\sqrt{\frac{36 }{4}+16}[/tex]

= [tex]12\sqrt{9+16 }[/tex]

= [tex]12\sqrt{25}[/tex]

= 12 × 5

= 60 square feet

Hence, the surface area of the pyramid is 60 square feet

Thus,

The total surface area = 180 square feet + 480 square feet + 60 square feet

The total surface area = 720 square feet

Hence, the total surface area is 720 square feet

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Answer:

1: 60

2: 480

3: 180

4: 720

Step-by-step explanation:

plato answer :)

a running relay team ran a 400 meter race in a record-setting time of 36 seconds.what was their average speed to the nearest tenth of a meter per second?

Answers

Answer:

406858reuyy igcbjiy469633

What is the probability of getting two heads if you flip two fair coins? answer as a simplified fraction ​

Answers

Answer: [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

use probability

the chances of you getting heads on a coin is 50% therefore, flipping two coins is just

[tex]\frac{1}{2} * \frac{1}{2}= \frac{1}{4}[/tex]

Answer:

the probability of getting two heads is 1/4

Step-by-step explanation:

H = (HH) => n(H) = 1

n(S) = 4

P(E) = number of favourable outcomes/total number of outcomes = n(E) / n (S)

PH = n(H)/n(S)

= 1/4

The base area of a rectangular water tank is 1000cm². If the tank has a height of 100cm' a) Find the capacity of the water tank.​

Answers

The capacity or volume of the rectangular water tank is 100000 cm³.

How to find the volume(capacity) of a water tank?

volume of a rectangular water tank = base area × height

where

base area = lw

Therefore,

base area = 1000 cm²

height = 100 cm

Therefore,

capacity(volume) of the water tank = 1000 × 100 = 100000 cm³

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pls help! look at the photo ill give brainliest!

Answers

Step-by-step explanation:

Ashley is the utilities manager at a paper mill. She's watching over one of her holding tanks. It takes 4/5 of an hour to fill 1/2 the tank

First we convert 4/5 of an hour in to

minutes

4/5 6048 minutes

In 48 minutes ----> 1/2 tank filled

In 60 minutes ----> 60 * 1/2 divide by 48

30 divide by 48=\frac{30}{48}

48

30

All 15%

Simplify the fraction by dividing top and

bottom by 6

30/48 = 5/8


3x-2y=12
6x-4y-24
OIt has infinitely many solutions.
OIt has no solution.
O It has one solution (2, -3).
O It has one solution (4, 0).

Answers

Answer: NO SOLUTION!!
(WORK SHOWN BELOW)

Worth 20 points! Drag each length to the correct location on the triangle. Each length can be used more than once, but not all lengths will be used.
What are the missing side lengths for triangle ABC?
(file is attached below!

Answers

The value of the perpendicular is 12 and the hypotenuse is 8√3.

What is trigonometry?

The branch of mathematics sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry.

The value of the sides will be calculated as:-

The perpendicular side will be calculated by using tan theta.

tan Ф = Perpendicular / BAse = P / 4√3

P = 4√3 x tan(60)= 4 √3 x √3 =12

The value of the hypotenuse will be calculated by using the Cos angle:-

Cos 60 = Base \ Hyputenuse.

Cos 60 = 4√3 / Hypotenuse

1 / 2 = 4√3 / Hypotenuse

Hypotenuse = 2 x 4 x √3 = 8√3

Therefore the value of the perpendicular is 12 and the hypotenuse is 8√3.

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The mapping diagram shows a function R(x)

Answers

Answer:

Answer is C

Step-by-step explanation:

It's the same as the mapping diagram but the values are flipped. It's going backward instead of forwards.

Determine the number of triangles that can be constructed given the conditions in a-d.
a. m b. Three line segments measure 21 inches, 7 inches, and 4 inches → _
c. RS = 14 cm, m d. m

Answers

Only b we can check

Line lengths are 21in,7in,4in

The rule is sum of two sides must be greater than third side

Check

21+7>47+4<2121+4>7

They can't form a triangle

What is the surface area of the rectangular prism
represented by the net shown?
6 in.
1.5 in.
1.5.in.

Answers

Answer:

40.5 inch²

Step-by-step explanation:

(((6×1.5)×4)+((1.5×1.5)×2) = 40.5

Solve for x. Round to the nearest tenth, if necessary.
56
Z
43°
x
M

Answers

60.2 is the value of x in Trigonometric ratios

What are the trigonometric ratios?

Trigonometric ratios are used to describe the side ratios of a right triangle. The sine (sin), the cosine (cos), and the tangent are three popular trigonometric ratios (tan).

                      Greek is the language of measuring, "metric," and "trigon" is the language of triangles. It is possible to measure a right triangle specifically using its trigonometric ratios.

43 degree as reference angle

using tan rule

tan 43 = opposite / adjacent

0.93 = x / 56

x = 56/0.93

x = 60.21

x = 60.2

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what is the product of -2/7and-3/7

Answers

6/49

Step-by-step solution.2/7 × 3/7=?

For fraction multiplication, multiply the numerators and then multiply the denominators to get

2×37×7 =6/49

This fraction cannot be reduced.

Therefore:

2/7×3/7=6/49

Solution by formals.

Apply the fractions formula for multiplication, to

2/7×3/7

and solve

2×37×7=6/49

Therefore:

2/7×3/7=6/49

Bryannasalaz

A solid cylinder has a radius of rm and a height of 12 m.
The volume of the cylinder is 507 m³.
Find the value of r.

Answers

Answer:

6.5m

Step-by-step explanation:

V=TTr²h

507TT=TTr²12

cancel TT on both sides

507=12r²

169\4=r²

r=13/2

A cube's edge lengths are each 5 inches. A rectangular prism's length and width are also 5 inches, but its height is 7
1
2
inches.
How many cubic inches larger is the rectangular prism than the cube?

Answers

The rectangular prism is 187.5 - 125 = 62.5 cu.inches greater than the volume of cube.

What is Volume?

Volume is defined as the space occupied by a three dimensional figure.

It is given that

A cube's edge lengths are each 5 inches

A rectangular prism's length and width are also 5 inches, but its height is [tex]\rm 7\dfrac{1}{2}[/tex]

The volume of the cube is given by side * side * side

Volume of cube = 5 *5 * 5 = 125 cu. inches

The volume of cuboid = length * width * height

Volume of Cuboid = 5  * 5 * 15/2

Volume of Cuboid = 187.5 cu.inches.

Therefore the rectangular prism is 187.5 - 125 = 62.5 cu.inches greater than the volume of cube.

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Can u help me pls i will be putting some more problems
look the image

Answers

28+ 90 + 2x = 180
2x = 62
x = 31

Step-by-step explanation:

2x + 28° + 90° = 180° ( The sum of all angle of triangle is 180° )

Now you may add 28° and 90° and subtract it from 180° ...

2x = 62° ..

Now...divide 62 by 2 ...

x = 31°

hence the value of x is 31°....

The rule is "Multiply by 8." Which statement is true? Number of Packages 3 5 6 8 Number of Juice Boxes 24 40 48 ? A. The number of juice boxes will always be greater than 24. B. The number of packages will always be greater than the number of juice boxes. C. The number of juice boxes must be an even number. D. The number of juice boxes will always be 21 more than the number of packages.
I need the answer ASAP!

Answers

The statement (C) the number of juice boxes must be an even number is correct.

What is a sequence?

It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.

We have a rule is “Multiply by 8"

Number of Packages:         3    5   6    8

Number of Juice Boxes:     24  40  48

The statements are:

A. The number of juice boxes will always be greater than 24. B. The number of packages will always be greater than the number of juice boxes. C. The number of juice boxes must be an even number. D. The number of juice boxes will always be 21 more than the number of packages.

Number of package starts from 3

Applying the rule: "Multiply by 8.

Number of Juice Boxes = 3×8 = 24

The statement should be the number of juice boxes will always be greater than and equal to 24.

When we multiply even with odd we get an even number.

8 is an even number.

Thus, the statement (C) the number of juice boxes must be an even number is correct.

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Based on the work below, is (4, 7) a solution to the equation given?

Answers

Answer:

No

Step-by-step explanation:

If a ordered pair is a solution for an equation, then it will satisfy the equation. That is, after substituting the x and y values in the equation, both sides of the equation will be same.

Here 29 ≠ 45.

So, (4,7) is not a solution

Find each square root after supplying:

Answers

Answer:

1) 5
2) 0.8
3)  -1.3

4) -[tex]\frac{4}{9}[/tex]

5) ±10

6) ±[tex]\frac{7}{12}[/tex]

Step-by-step explanation:

Must show work-Solve the conjunction and describe the solution set. −5 < 2x + 3 < 9

Answers

The solution set of the inequality −5 < 2x + 3 < 9 is (-4,3)

How to solve the inequality?

The compound inequality is given as:

−5 < 2x + 3 < 9

Expand the inequality

−5 < 2x + 3 or 2x + 3 < 9

Rewrite as:

2x + 3 > -5 or 2x + 3 < 9

Subtract 3 from both sides

2x > -8 or 2x < 6

Divide both sides by 2

x > -4 or x < 3

Rewrite as:

(-4,3)

Hence, the solution set of the inequality is (-4,3)

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Find the missing side length of side c, a and b are both 25

Answers

Answer: x=25, y=2

Step-by-step explanation:

use Pythagorean theorem to get that 1250= c^2. then sqaure root both sides. c= sqrt(1250). jailbreak to get c=(5 x 5 x 5 x 5 x 2), and take the fives out from under the square root to get 25 x sqrt2.

Is 35 cm greater than 3.5 m

Answers

Answer:

no

Step-by-step explanation:

3.5m=350cm

35cm<350cm

find the value of x in the following equation 8x- 6=50​

Answers

Answer:

x = 7

Step-by-step explanation:

8*7 - 6 = 50

what percentage of 2m is 40cm​

Answers

Answer:

20%

Step-by-step explanation:

the units of measure must be the same, so

2m = 2 × 100 cm = 200 cm

then

[tex]\frac{40}{200}[/tex] × 100%

= 0.2 × 100%

= 20%

Answer:

20%

Step-by-step explanation:

2 m = 200 cm

We are required to find: what percentage of 2m is 40cm.

Required percentage [tex]=\frac{40}{200}\times 100[/tex]

Required percentage [tex]=\frac{4000}{200}[/tex]

Required percentage [tex]=20%[/tex]


A system of two equations is shown below. What will you need to multiply the
top equation by in order to solve this system using the elimination method?
x + y = 4
3x+4y=14
A. 3
OB. 4
C. -2
D. -3

Answers

You would use -3 so the top equation would be
-3x-3y=-12
3x+4y=14
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