Mathematics Middle School

Compare the theoretical and experimental probabilities. Jayson draws a card from a​ deck, replaces​ it, and draws again. He records the number of times he draws a queen.

Number of Trials: 20, 25, 100
Number of Queens: 5, 3, 9

The theoretical probability is: ?%

Answers

Answer 1

ANSWER:divide 20/5, 25/3, 100/9 those answers are: 4, 8.3, 11.1. All we really need is 100/9=11.1 because it wants a percent so the answer is 11.1%

Answer 2

The statement that is false on Jose drawing cards from the deck is B. For a given number of selections, we can use Joseph's graph to find the number of diamonds that he has picked so far.

What is probability?

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

here, we have,

given that,

Jose draws a card from a deck replaces it and draws again he records a number of times he draws an ace. He decides to record the total number of aces that he selects and calculates the proportion of aces that he has selected so far after each pick. He then constructs a graph to visualize his results.

as the graph can not be used:

Jose only recorded the number of aces he selected, not the number of diamonds. Therefore, we cannot use his graph to find the number of diamonds he picked.

However, if we were to use the graph to find the number of aces that Jose has picked so far, then we would be successful. The other statements are true as Jose recorded the cards he took and the cards were replaced after each pick.

Find out more on probability at

brainly.com/question/12823386

#SPJ2

The full question is:

Jose draws a card from a deck replaces it and draws again he records a number of times he draws an ace. He decides to record the total number of aces that he selects and calculates the proportion of aces that he has selected so far after each pick. He then constructs a graph to visualize his results. Which of the following statements is FALSE?

A. The theoretical probability for selecting an in each pick is 1 / 13.

B. For a given number of selections, we can use Jose's graph to find the number of diamonds that he has picked so far.

C. This is an example of the law of large numbers.

D. The relative frequency of selecting an ace changes with the increase in number of selections.

Related Questions

As you as see by the eraser marks. I’ve been working hard. Pls help me!

Answers

(22 - 4) / 6

The answer would be 3 miles on each of the six days

Answer:

In a week we have 7 days.

On the first day, Clare runs 4 miles.

On the other six days, she runs the same distance, let's call it D.

In total, she runs 22 miles.

Then:

4mi + 6*D = 22 mi

6*D = 22mi - 4mi = 18mi

D = 18mi/6 = 3mi.

Then the other 6 days, Clare runs 3 miles

Hope it helped! :)

please answer question in the image below ty <3

Answers

Answer:

Step-by-step explanation:

(9x+13)

The amount of a medicine, in milliliters, that a veterinarian prescribes is proportional to the weight, in kilograms, of a dog as shown on the graph.

What is the unit rate in milliliters per kilogram?

Enter your answer as a decimal in the box.

___ mL/kg

(graph in picture below) + brainliest/50 points

Answers

To the question answer is (8,10) & (20,18)

Solve the word problem and ratio table.

Pls help me

Answers

60/5, 48/4, 36/3, 30/2.5, 24/2. you just multiply the bottom number by 12 or divide the top number by 12.

I don't know B. :⊂ Find the answer for me please?

Answers

Answer:

For A: The answer is (79-2x) degrees

For B: The answer is (169-2x) degrees

I hope this answer helped you out!

Step-by-step explanation:

I took the test!!!

I NEED THIS RIGHT THIS MOMENT

Answers

Problem
Which of the following equations are equations of direct variation? Choose all that apply.
(
A
)
(
A
)
x
=
−
2
y
x
=
-
2
y
(
B
)
(
B
)
x
+
2
y
=
12
x
+
2
y
=
12
(
C
)
(
C
)
3
x
−
2
y
=
0
3
x
-
2
y
=
0
(
D
)
(
D
)
5
x
2
+
y
=
0
5
x
2
+
y
=
0
(
E
)
(
E
)
y
=
0.3
x
+
1.6
y
=
0.3
x
+
1.6
(
F
)
(
F
)
y
−
2
=
x
y
-
2
=
x
Solution
Find
F
F
using the constant of variation formula
x
=
k
y
x
=
k
y
.
x
=
−
16
23
The answer is (a) and (c) since they both go up and down

Isabelle loves to bird-watch and buys a large bird feeder for her yard. The feeder holds 3
3
4
pounds of birdseed. Isabelle wants to fill it with a birdseed mixture that will attract a variety of birds. The birdseed comes in bags that hold 1
1
2
pounds. How many bags' worth of birdseed will it take to fill the feeder?

Answers

Answer:

I think the answer is 3 ¾

Step-by-step explanation:

I just counted the boxes. there are 3 completely filled boxes and one box ¾ of it filled.

hope this helps

If you multiple 112 times 3 you get an answer of 336 which is two pounds more than you need. So your answer is 3 bags. There will be two pounds left in one of the remaining bags.

A school board randomly samples 80 students to determine their opinion on requiring school uniforms for the next school year. The table shows the results of the survey.

If there are 3,000 students in the district, how many students do you expect to be undecided about school uniforms?

Answers

Answer: 900

Step-by-step explanation:

If 24 out of 80 students are undecided, that is 24/80, or 3/10 (0.3).

To find how many would be undecided out of 3,000 students, multiply 3/10 by 3,000/1, and you get 900, which is your answer

Answer:

900

Step-by-step explanation:

A school board randomly samples 80 students to determine their opinion on requiring school uniforms for the next school year. The table shows the results of the survey.

If there are 3,000 students in the district, how many students do you expect to be undecided about school uniforms?

we can solve with an equation

80 : 24 = 3000 : x

x = 24 * 3000 : 80

x = 900

Isabella drove 2 1/3 miles from home to school. Then, she drove 4 3/5 from school to the store and 5 4/5 miles home from the store. Write an addition sentence to show the total number of miles.

Answers

12 11/15.
Add 2 1/3 plus 4 3/5 plus 5 4/5 by converting them to improper fractions
Therefore 35/15 + 69/15 + 87/15 equals 191/15 which equals 12 11/15.

Hope this helps, pls subscribe to Mathlete2022.

⋆ check image !!!!

⚝ the variability in the data for period 1 is [ ... ] the variability in the data for period 2 .

choices ...

✰ less than

✰ equal to

✰ greater than

Answers

Greater than 75 less than 97/98

Period 2 greater than 74 less than 97/98

Could someone help me with this quikly

Answers

Answer:

Plan A=3/2 hours Plan B=5/4 hours

Step-by-step explanation:

Plan A equals x

Plan B equals y

So than 3x+2y=7

And 8x+4y=17

Then you multiply the first equation by 2 to get rid of Y. 6x+4y=14 and 8x+4y=17 2x=3 x=1.5 y=1.25

The answer is plan a

Mrs. Irons places the names of each of her four children in a hat at one time. She randomly draws a name, places it back in the hat, and draws again. The results are shown in the table below.
What is the experimental probability of selecting the name Alex?

Answers

Answer: 2/5

Step-by-step explanation:

p(e)=no. of observations/total number of observations

4/10

2/5

Therefore the answer is 2/5 . Look at the image of the solution below. Hope this helps. Pls subscribe to Mathlete2022.

Drag each expression to show whether it is equivalent to 8( t+ 4), 8 t+ 4, or neither.

Answers

8t+4 : 4(2t+1), 4t+4+4t
8(t+4) : 8t+32, (8•t)+(8•4)
Neither are the remaining ones

The price of a technology stock was $9.79 yesterday. Today, the price fell to $9.66. Find the percentage decrease. Round your answer to the nearest tenth of a percent.

Answers

Answer: 1.3%

Step-by-step explanation:

The percentage decrease can be found using the formula:

percentage decrease = [(original value - new value) / original value] x 100%

Substituting the given values:

percentage decrease = [(9.79 - 9.66) / 9.79] x 100%

percentage decrease = 1.33%

Rounding to the nearest tenth of a percent, the percentage decrease is 1.3%.

Answer: hope this helps ♡

The percentage decrease is 1.33%.

Step-by-step explanation:

Percentage decrease: dividing the value by the total value and then multiplying it by 100

Total value: $9.79          Value: $9.79 - $9.66 = 0.13

[tex]\frac{0.13*100}{9.79}[/tex]  =

(0.13 × 100) ÷ 9.79 =

13 ÷ 9.79 =

1.32788559755 ≈ 1.33%

Pls help 50pts and brainliest

Answers

Answer: first u do a^2 + b^2 = c^2

Answer:a^2 + b^2 = c^2

help me and thank you

Answers

Answer:

A rectangle is a parallelogram.

Step-by-step explanation:

A parallelogram is a shape with 4 sides. A rectangle has 4 sides and is therefore a parallelogram. It also has two sets of parallel lines which a rectangle does share with a parallelogram.

Math please help (needed in at most and hour)

Answers

What’s the question’s
What’s the question?

HELP MEEEEEEEEEE PLS
If f(n) = n2 - 2n, which of the following options are correct?

Select all that apply.
f(2) = 0
f(-2) = 0
f(1) = 3
f(5) = 35
f(-4) = 24

Answers

Answer: A f(2)=0 I think

Answer:

f(2) = 0

f(-4) = 24

Step-by-step explanation:

[tex] \hookrightarrow \: { \tt{ \sf{f(n) = {n}^{2} - 2n }}}[/tex]

When n is 2 ✔

[tex] \dashrightarrow \: { \tt{f(2) = {(2)}^{2} - (2 \times 2) = 4 - 4 = 0}} \\ [/tex]

When n is -2 ✖

[tex] \dashrightarrow { \tt{ {( - 2)}^{2} - (2 \times - 2) = 4 + 4 = 8 }}[/tex]

When n is 1 ✖

[tex] \dashrightarrow{ \tt{f(1) = {(1)}^{2} - (2 \times 1) = - 1 }}[/tex]

When n is 5 ✖

[tex] \dashrightarrow{ \tt{f(5) = {(5)}^{2} - (2 \times 5) = 15}}[/tex]

When n is -4 ✔

[tex] \dashrightarrow{ \tt{f( - 4) = {( - 4)}^{2} - (2 \times - 4) }} \\ { \tt{ = 16 + 8}} \\ { \tt{ = 24}}[/tex]

could someone help me?

Answers

Answer:

There are 55 large boxes

and 70 small boxes.

Step-by-step explanation:

Let's assume that the number of large boxes is x, and the number of small boxes is y. We then can use how many pounds each box weighs to form a system of equations.

System:

[tex]50x+25y=4500\\x+y=125[/tex]

Step 1: Solve for a variable

[tex]x+y=125[/tex] is also [tex]y=-x+125[/tex]

Step 2: Substitute

[tex]50x+25(-x+125)=4500[/tex]

Step 3: Simplify

[tex]50x+-25x+3125=4500\\25x=1375\\x=55[/tex]

Step 4: Solve for y

[tex]y=-55+125\\y=70[/tex]

The answer would have to be 55 small and 55 large there is no other explanation

A laundry basket has 24 t-shirts in it. Four are navy, 12 are red, and the remaining are white. Find the following probabilities of choosing one shirt at random.

P(red) =
P(white') =
P(green) =

Answers

Answer:

p(red)=1/2

p(white)=1/3

p(green)=0

Step-by-step explanation:

p(green)=0 because there was no green tshirts in the first place

Answer:p(red)=1/2

p(white)=1/3

p(green)=0

Step-by-step explanation:

p(green)=0 because there was no green tshirts in the first place

An ordered pair of the function d(t) = 35t is _____.

(35, 35)
(35, 1)
(1, 35)
(1, 1)

Which ordered pair is not a solution of f(x) = 2x + 9?

(7, 23)
(3, 14)
(2, 13)
(0, 9)

Answers

the answer to the first one is (35,1)
the answer to the second one is (3,14)
answer to the question is the first one is (35,1) and the second one is (3,14)

The two triangles below are similar. Use scale factor to find x
How to write solution: X = __ cm

Answers

Well Triangle A - ( 5cm by 3cm) and triangle B - ( 15cm by Xcm) if we divide 15/5 we get 3, we have to multiply 3 by 3 To get 9 wich is the angle length for x (or just multiply by 2/3)

A flower was 1.6 meters high one week ago. In 7 days it grew 11 centimeters. What is the current height of the flower?

Answers

Answer:

The current height of the flower is 1.71 meters!

I hope this answer helped you!!!

Step-by-step explanation:

I took the test!!!

1.71 meters, hope this helps:)

Solve the inequality d/4 > 36 for d

A. d < 9
B. d < 144
C. d > 144
D. d > 9

Answers

Answer: D. d > 9

Step-by-step explanation:

We have the inequality:

d/4 > 36

To solve for d, we need to isolate the variable d on one side of the inequality. We can do this by multiplying both sides of the inequality by 4:

d > 36 x 4

d > 144

Therefore, the answer is (D) d > 9, since any value of d greater than 9 would satisfy the inequality. We can also check that the other answer choices are incorrect:

   If d < 9, then d/4 < 9/4, which is less than 36. So, (A) d < 9 is not a valid solution.

   If d < 144, then d/4 < 144/4 = 36, which is less than 36. So, (B) d < 144 is not a valid solution.

   If d > 144, then d/4 > 144/4 = 36, which satisfies the inequality. So, (C) d > 144 is also a valid solution, but not the most inclusive one.

Answer:

the correct answer is option C: d > 144.

Step-by-step explanation:

A cylindrical of oatmeal canister has a diameter of 4 inches and a height of 10 inches. The manufacturing company wants to package the oatmeal in square containers to cut back on wasted storage space. If the new carton has a square base with 4 inch sides, what is the minimum height it must have, to the nearest 1/4 inch, to hold the same volume of oatmeal? Use 3.14 for the value of π.

Answers

Step-by-step explanation:

Volume of cylinder = pi r^2 h

Volume of square container = s x s x h

they need to be equal

pi r^2 h = s^2 h

pi (2)^2 * 10   = 4^2 h            (diameter = 4   then radius = 2)

40pi / 16 = h = 7.9 in  = ~ 8 in   to the nearest 1/4 inch

The following table shows several ordered pairs of a function, m(x)

x m(x)
-1 -1.5
1 1.5
2 3
4 6

Graph m(x) on a coordinate plane to determine whether or not the function represents a direct variation. In complete sentences, describe your conclusion and reasoning. Include your graph in your answer.

Answers

Answer:

  m(x) = 1.5x . . . . direct variation

Step-by-step explanation:

You want to know if the function m(x) represents direct variation, given a table of values.

Direct variation

An equation for direct variation is ...

  y = kx

where k is a constant that can be found as the ratio of any (x, y) pair:

  k = y/x

  k = -1.5/-1 = 1.5/1 = 3/2 = 6/4 = 1.5

The ratios are constant, hence m(x) is direct variation with a constant of variation of 1.5.

Graph

The graph of direct variation is a straight line through the origin. The given points lie on such a line.

Which unit rate corresponds to the proportional relationship shown in the graph?

Will mark brainliest !!

Answers

Haven't done this kinda problem in a while but I got 4/3 cm/s

Step-by-step explanation:

Using the coordinates given i put them into the formula:

        y1  -  y2

m=_________

        x1  -  x2

That gave me -16/-12, I simplified & got 4/3.

unit rate in this case would be the slope
To find the slope you need at least two points on a line
The formula would be m=y2-y1/x2-x1

16-0/12-0
16/12
Simplified we would divide by 4 since it goes into both numbers
4/3 as the answer

What is the approximate difference between the volume of the sphere and the volume of the cone?


A about 13.6 cm3

B about 16.8 cm3

C about 4.3 cm3

D about 80.6 cm3

Answers

Answer:C

Step-by-step explanation:

Which equation results from adding the equations in this system? Negative 6 x + 4 y = negative 8. 6 x minus 12 y = 14. Negative 16 y = 6 Negative 8 y = 6 Negative 8 y = negative 22 Negative 16 y = negative 22

Answers

Answer:

Negative 8y = 6

Step-by-step explanation:

-6x + 4y = -8

6x - 12y = 14

--------------------------

-8y = 6

Can someone pls help!!

Answers

the answer is the first one..
The answer is the first one
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