Mathematics Middle School

(Theoretical Probability MC)

A standard deck of cards has 26 red cards and 26 black cards. A card is chosen from a standard deck of cards. It is then replaced, and a second card is chosen from the deck.

What is P(at least one card is black)?

three fourths
one half
one fourth
1 over 52

Answers

Answer 1

Answer:

3 fourths.

Step-by-step explanation:

It is a 50/50 chance you will get a black on the first try. And a 50/50 chance you will get it on your second. Since you only need 1 black. The probability is 3/4 or 75%

Related Questions

Each line represents a proportional relationship. Write an equation for each line. Show your work.


A.

B.

Answers

Answer:

A 4x4 B 5x2

Step-by-step explanation:

check the points

The answer is A!! Click letter A

Create an Complimentary equation.

A- x+3+x-1+x+1=180

B- x+3+x-1+x+1=90

C- 3x-1=90

D- You don't

Answers

Answer: B

Step-by-step explanation:

The angle equals 90 degrees, and adding all of those split sections up it should equal 90 degrees.

Está fácil todo es 90 grados entonces se suma y se iguala a 90

A wedding cake has two layers, as shown. Each layer is in the
shape of a cube. The bottom of the cake and the area where
the two cakes meet are not frosted. What is the area that will be frosted on the bottom layer?

Answers

The area not frosted in the bottom layer of the cake is 680 square inches. This can be calculated by identifying the total area and the frosted in both the cube-shaped layers and subtracting the same.

Given, the sides of the cube on top are 6 inches, the sides of the cube below are 10 inches. To calculate the total surface area of cake = surface area of top layer + surface area of bottom layer) = [tex](side^{2} *number of sides + side^{2} *number of sides)[/tex]

= 6*6*6+10*10*6 = 816 square inches.

Let us calculate the total area of the cake that is not frosted, = (area of bottom+area of connection) = [tex]side*side + side *side[/tex]= 6*6+10*10 = 136 square inches. To find the area of the cake that is not frosted on the bottom layer,

=(total surface area of the cake - total area of the cake not frosted)

= 816 - 135 square inches = 680 square inches. Therefore, the total area not frosted on the bottom layer is 680 square inches.

To learn more about the area calculation, https://brainly.com/question/30796607

Show work. Due in 5 hours.

Answers

Answer: 3 feet

Step-by-step explanation: It's simple if there is a 39-foot ladder going straight up and the house is 36 feet high back up 3 feet then angle the ladder a little bit and it meets at the point

Answer: 3 feet

Step-by-step explanation:

The population of a city increases by 2% per year. If this year's population is pp, which expression represents next year's population?

































Find the annual interest rate. Round your answer to the nearest hundredth of a percent.

I=$160.67, P=$2000, t=8 months

Answers

Answer:

Next year's population would be represented by the expression pp * 1.02.

Step-by-step explanation:

the years population is 75%

Pls answer quick : Arwind walked 1/2 of a mile to the grocery store and then 4/6 of a mile to the bank, How can he write 1/2 and 4/6 as a pair of fractions with a common denominator?

Answers

Answer:

He can multiply 1/2 by 3/3 which makes it 3/6 so now 4/6 and 3/6 have common denominators.

what is -0.3(0.2)(12)

Answers

Answer:

-0.72

Step-by-step explanation:

(-.3)(-.2)= -0.06

(-.06)(12) = -0.72

The right answer is -0.72

-0.3 x 0.2 x 12 = -0.06 x 12

-0.06 x 12 = -0.72

A wedding cake has two layers, as shown. Each layer is in the
shape of a cube. The bottom of the cake and the area where
the two cakes meet are not frosted. What is the area that will be frosted on the top layer?

Answers

Answer:

Step-by-step explanation:

no

two quadrilaterals that have matching angles but different side lengths.

Answers

Answer:

Step-by-step explanation:

ere are two quadrilaterals that have matching angles but different side lengths:

1.Quadrilateral ABCD:

Angle A = 90 degrees, Angle B = 60 degrees, Angle C = 120 degrees, Angle D = 90 degrees

Side AB = 5 units, Side BC = 10 units, Side CD = 5 units, Side DA = 10 units

2.Quadrilateral PQRS:

Angle P = 90 degrees, Angle Q = 60 degrees, Angle R = 120 degrees, Angle S = 90 degrees

Side PQ = 3 units, Side QR = 6 units, Side RS = 3 units, Side SP = 6 units

Both of these quadrilaterals have the same angle measures (90 degrees, 60 degrees, and 120 degrees) but different side lengths. Therefore, they are similar but not congruent.

Help me Pls!!!! also don't scam me like someone else did. I need this pretty quickly

Answers

The answer is 2/7 because x always = 1 so it would be 2/7(1) which is 2/7

50 POINTS ASAP!!!!
A group of students was asked about the number of flights they have taken. The data is shown in the line plot.

A line plot titled Flights Taken. The horizontal line begins at 3, with each unit marked up to 14. There is one dot above 6, 9, 10, and 11. There are two dots above 5, 7, and 8.

Which of the following best describes the spread of the data? Explain its meaning in this situation.

The data has a range of 11, which is a wide spread. This means that one student had 11 fewer flights than the students with the most number recorded.
The data has a range of 6, which is a narrow spread. This means that there is not a large difference in the number of flights taken by the students.
The data has a range of 11, which is a narrow spread. This means that there is about the same number of flights taken by each of the students.
The data has a range of 6, which is a wide spread. This means that there is a difference of 6 flights between each of the students.

Answers

The data has a range of 11, which is a wide spread. This means that there is a large difference in the number of flights taken by the students, with one student having taken 11 more flights than the student who took the least number of flights recorded. In this situation, the spread of the data indicates that some students have taken significantly more flights than others.

The data has a range of 6, which is a wide spread. This means that there is a difference of 6 flights between each of the students.

How to obtain the range of a data-set?

The difference between the highest and lowest values in a data collection indicates the range of that data set.

The dot plot displays the frequency of each amount observed, so:

The lowest number is of 5.

The highest number if of 11.

Then. the range is

=11 - 5

= 6.

Learn more about range of a data-set here: brainly.com/question/24326172

#SPJ2

A gardening company can mow 6 lawns in 3 hours.


How many lawns can be mowed in 4 hours?


Responses


A-6 lawns


B-9 lawns


C-8 lawns


D-10 lawns

Answers

8 at two lawns per hour
6 divided by 3 is 2 so 2 lawns per hour. 4 hours times 2 per hour is 8 lawns.

Three circles are placed in a rectangle with length 24m, as shown below.
Find the area of the shaded region. Use the value 3.14 for pi, and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Answer:6.28

Step-by-step explanation:

I think

Answer: 6.28 Step by step: I don’t know

A B C or D??????????

Answers

Answer:

The correct answer is D

Step-by-step explanation:

there is no relationship

Answer:

D

Step-by-step explanation:

the length doesn't decrease nor increase the wingspan

help me pls,i dont understand this

Answers

Answer:

approx 314 m^3

Step-by-step explanation:

volume=pi r^2 h/3 => pi*5^2*12/3 =>3.14*25*4=314

Answer:

approx 314 m^3

Step-by-step explanation:

PLEASE HELP IM ALMOST OUTTA TIME 2

Answers

Answer: The answer is 32

Step-by-step explanation:

2(5)^2-2(5+4)

2 * 25 - 2(9)

50 - 18

32

put 5 where the x’ are, then use PEMDAS to answer. your answer would be 32.

Find the missing fraction.


−1/4÷(xy/)=−1/2
pls help its due at midnight.

Answers

Answer:

1/2y

Step-by-step explanation:

x and y do not equal to 0

Answer:

xy=1/2

Step-by-step explanation:

-1/2xy=-1/4

-1/2xy divide by -1/2= -1/4 divide by -1/2

Create an equation for the Supplementary Angle shown in the picture.

Answers

d+c+h+g = 180

the angles that make up a straight line add up to 180

180 like the other said

A-10 minutes
B-8 minutes
C-5 minutes
D-3 minutes

Answers

the answer is B - 8 minutes
The answer is B as in 8 mins!

help me asap please Which expression calculates the speed in feet per second of an object that travels a distance of 40 feet every 10 seconds?


Responses

A-10 divided by 40

B-10 plus 40

C-40 divided by 10

D-40 times 10

Answers

Answer:

C.

Step-by-step explanation:

Speed can be calculated by distance over time. (or in a fraction)

Therefore, the answer is C because 40÷10 equals 4 ft./h.


Hope it helped!

correct answer is C

FIRST QUESTION
9 POINTS and BRAINLIEST

MAGDIEJAMESNY!!!

Answers

Answer:

ok

Step-by-step explanation:

Answer:

HI!

I love how we are friends

U R A GOOD FRIEND!

Step-by-step explanation:

Please, help me with this!

Answers

Answer:

I believe the answer is B

Step-by-step explanation:

I think its B.

The correct alternative is: b) 7/16.

I apologize if this is incorrect. I hope you have a lovely day! :)

HELP ASAP
What is the value of y in this figure?

Enter your answer in the box.
y =
Two intersecting lines. All four angles formed by the intersecting lines are labeled. Clockwise, the angles are labeled 163 degrees, z degrees, y degrees, and x degrees

Answers

Answer: The answer it, 163

Step-by-step explanation:

The graph below represents a map where each unit is 1 mile.

How many miles is the most direct path from Jim's house to the mall?

A. 12 miles
B. 9 miles
C. 15 miles
D. 21 miles

Answers

THE ANSEWR IS 21 BECAUSE

I am to believe that the answer is 21

1. The distance between two cities is 144 km, it takes me 3 hours to travel between these cities. What speed did I travel at?

2. Jim travelled at a speed of 18km/h for 2 hours. What was the distance covered?

3. A whale swims at a constant speed of 8m/s for 17s. What distance did it travel?

*Given numbers:
*Find:
*Formula
*Solution
*Final Answer:
Each Question this is science and math

Answers

Answer:

1- 48 km/h

2- 36 km

3- 136 m

Step-by-step explanation:

1- 144:3=4

2- 18x2=36

3- 8x17=136

I will give 20 points
pls help me

Answers

Answer:

Q1)A=2(wl+hl+hw)=2·(4·10+6·10+6·4)=248

Step-by-step explanation:

Hopefully this is the answer you are looking for.

The surface area is 24 square inches

What is the surface area of the prism shown?

Answers

Answer: 1.8
Explanation: you need to find the area of each of the sides of the shape and then add them together so the sum is:
(0.5x1.2)+(0.4x1.3)+(0.4x1.2)+(0.5x0.4)
=1.8
Note: to find the area of the triangle you don’t need to divide by two because there are two of the triangle sides so they just cancel out.
Hope this helps, pls mark brainiest answer.

3. 01(1 is the repeating) as a mixed number

Answers

Answer:

Step-by-step explanation:

3.0111...=3+0.0111...

So,

x=0.01111...

then

10x=0.1111...    ------(1)

100x=1.1111...  ------(2)

(2)-(1) ==> 90x=1

that is x=1/90

Hence, 3.0111...= 3+1/90 =[tex]3\frac{1}{90}[/tex]

help mee asap pleasee Which expression calculates the speed in feet per second of an object that travels a distance of 20 feet every 4 seconds?

Responses


A-20 plus 4


B-4 times 20


C-20 divided by 4


D-4 divided by 20

Answers

Answer:

C

Step-by-step explanation:

ANSWER:
C

Step-by-step:

d: 20
t: 4

d= v • t
20 = 4v

20/4

i need help on the (b.) part pls thanks

Answers

Answer:

Column 1 choose option 1 (x,y) --> (3/2x,3/2y)

Column 2 choose option 2 (x,y) --> (3/2x,3/2y)

Step-by-step explanation:

Focus on just Point S to go from (6,2) to (9,3) you would multiply 6*3/2 and 2*3/2. So, the scale factor is 3/2.

Answer:Column 1: 1 (x,y) --> (3/2x,3/2y)

Column 2: 2 (x,y) --> (3/2x,3/2y)

Other Questions
American embassy quiz Mendel hypothesized that reproductive cells have only one factor for each inherited trait. This hypothesis is supported by which observation? answer choices A. Haploid cells are produced by mitosis. B. Diploid cells are produced by mitosis. C. Haploid cells are produced by meiosis. D. Diploid cells are produced by meiosis. need help on this one question. And explain Part AWhich statement best describes the protagonists conflicting motivations?ResponsesA.She wishes to escape oppression in Nigeria but stay near her sons memory.B.She wants to be reunited with her husband but wants him to stop his journalism.C.She wants to leave her husband but needs his support in this difficult situation.D.She wishes to return to her work as a journalist but is fearful of the government.Part BWhich two excerpts from the selection best support the answer to Part A?ResponsesA.The day before, she had driven her husband in the boot of their Toyota to the home of a friend, who smuggled him out of the country. (paragraph 10)B.Me, I am applying for a visitors visa. My brother lives in Texas and I want to go for a holiday. (paragraph 28)C.In different circumstances, she might have told him of her own journalism. . . . (paragraph 41)D.I need some evidence that you will be in danger if you stay on in Nigeria. (paragraph 57)E.She wanted to go back to their ancestral hometown she wanted to arrange the flowers side by side, like Ugonna had done with his LEGO blocks. (paragraph 60) This is a coarsely crystalline igneous rock, so to identify the rock you only need to estimate its composition. Select the option that gives the closest approximation of the proportion of the minerals. did frances declaration of the rights of man and citizen apply to slaves in french haiti? what process contains the central dogma of molecular biology The ability of price-taker firms to freely expand or contract their businesses and to enter or exit the market means thatSelect one:a. resources that would be more valuable elsewhere will not be trapped, unproductively, in a particular industry.b. prices will always be high enough to generate positive economic profit.c. resource owners cannot move their resources to other areas where they would be more highly valued.d. resources that would be more valuable elsewhere will be trapped, unproductively, in a particular industry. How many moles are in 9.50g of co2? Show your work compared to aerobic respiration, glycolysis produces_____atp. what is y2x+x2y? i need answer now Did america follow Washingtons suggestion How electrons if n=3 and (l=2 or m=0) why did anne stopwriting shorthad which phase of the moon comes between waxing crescent and waxing gibbous? Keith's chocolate bar is 42% cocoa. If the weight of the chocolate bar is 61 grams, how many grams of cocoa does it contain? Round your answer to the nearest tenth.TIMED. If all planets were the same mass, which would have the lowest gravitational force between itself and the sun? Why? What mechanisms can account for Earths increasing temperature? a recognizable musical material, which usually recurs throughout a work, is called a(n) ______. what is monroe doctrine definition?