Mathematics Middle School

1. Of the first 40 United States Presidents, 20% were former teachers. How many of the presidents were teachers?

Answers

Answer 1

8 is because 20% of 40 - 8

Answer 2

Answer:

8 presidents

Step-by-step explanation:

We have to find 20% of the first 40 United States

20% = 0.2

0.2 former teachers / 40 first presidents = 8 presidents that were teachers

I hope this helps u! :D

Related Questions

Which choice could include the degrees of the angles in a quadrilateral?
A: 43,54,127,136
B: 25,35,63,57
C: 80,90,100,110
D: 50,91,101,128

Answers

the answer is A! it equals 360°!

The answer is yes A it equals to 360

I need help with question please and thank you

Answers

Hello here is your answer!

a=4

If this helped please mark brainlist!

Answer:

A=4

Step-by-step explanation:

7=4+3

What is this shape called?

Answers

Answer:

This is a triangular prism

Step-by-step explanation:

HELP ASAP!!!!! Find the lateral surface area and the total surface area of each figure. round to the nearest tenth if needed. SHOW ALL WORK. (Will give brainliest for correct answer and explanation on what to do)+

Answers

Answer:

(1-2) LS = 288cm² TS = 378cm²

(3-4) LS = 1419.2 TS = 1673.5

(5) LS = 543 TS = 606

Step-by-step explanation:

(1-2)

7 1/2 = 7.5

7.5 x 15 = 112.5

9 x 12 ➗ 2 = 54

54 x 2 = 108

9 x 7.5 = 67 .5

(3-4)

3.14 x 81 = 254.3

(5)

9 x 15 = 135 x 2 = 270

15 x 7 = 105 x 2 = 210

9 x 7 = 63

(add)

Utilize the virtual die roller to conduct an experiment of how many actual times you will roll a "3" if you roll the die 72 times.
https://flipsimu.com/dice-roller/#

Answers

Answer:

15 times-

Step-by-step explanation:

pls answer quick rjwejriwejriwekr

Answers

Answer: $181.48 O_O

Step-by-step explanation: i know that stuff

Answer:

$530.48

Step-by-step explanation:

i can answer now yay

Which equation could be used to solve problems involving the relationships between the angles?
A) 90+(8a+9)=(11+2a)
B) 90-(8a+9)=(11+2a)
C) (11+2a)-90=(8a+9)
D) (8a+9)-(11+2a)=90

Answers

Answer:

Step-by-step explanation:

The Empire State Building is just over 1,450 feet tall. In anticipation of visiting this
landmark on your vacation, you create a model of it using blocks.

a) Suppose you are making a model where one block represents 2 feet. About how
many blocks tall is your model of the Empire State Building? What is the scale
factor? (2 points)

b) Suppose you are making a model where one block represents 5 feet. About how
many blocks tall is your model of the Empire State Building? What is the scale
factor? (2 points)

c) Look at the scale factor from parts a and b. Do they represent a reduction or an enlargement of the Empire State Building? How do you know? (2 points)

d) Use your knowledge of scale drawings and image sizes to fill in the missing
information in the table. (3 points)

Answers

A) your model would be 725 blocks tall because 1,450/2=725
B) your model would be 290 blocks tall because 1,450/5=290.
C)reduction of the Empire State Building because you are building a model that takes blocks representative of a larger unit than what it signifies
D)don’t have the table to fill in

Model requiring 525 block and 290 blocks

What is scale factor ?

Scale Factor is used to scale shapes in different dimensions. In geometry, we learn about different geometrical shapes which both in two-dimension and three-dimension. The scale factor is a measure for similar figures, who look the same but have different scales or measures. Suppose, two circle looks similar but they could have varying radii.

a) You have two given data available here: the actual height of the Empire State Building measuring 1,450 feet, and the height of the block measuring 2 feet. To find how many blocks stacked together would make up 1,450 feet, just divide 1,450 by 2.

Number of blocks=1,450 feet * (1 block/2 feet)

Number of blocks = 725 blocks

Therefore, you would use a model requiring 725 blocks.

The scale factor for the model is 1 block per two feet.

b) You have two given data available here: the actual height of the Empire State Building measuring 1,450 feet, and the height of the block measuring 5 feet. To find how many blocks stacked together would make up 1,450 feet, just divide 1,450 by 5.

Number of blocks=1,450 feet * (1 block/5 feet)

Number of blocks = 290 blocks

Therefore, you would use a model requiring 290 blocks.

The scale factor for the model is 1 block per five feet.

To learn more about the scale factor here:

https://brainly.com/question/15555657

#SPJ3

Evelyn gave a $3 tip to the person delivering her $15 pizza. What percent of the cost of the pizza was the tip that she paid?
WILL GIVE BRAINLIEST!! :)))

Answers

Answer: The answer is 20%

Step-by-step explanation: when you multiply 15 by .20 you get 3

The answer is 5% because 15 divided by .3 is 5%.

7(x+6)
Distributive Property
will mark brainliest

Answers

7 because is it I do it and I know is correct

Answer:

7x + 42

Step-by-step explanation:

7(x + 6)

7x + 42

good luck, i hope this helps :)

Please help with this.

Answers

Answer:

neither, the slopes are the same

Step-by-step explanation:

Answer: I’m pretty sure it’s “the slope of function A is less than the slope of function B”

Which of expressions illustrates the associative property?

ab + bc

a ( b + c ) = ab + bc

a ( b + c ) = (a + b ) + c

a + b + c = c + b + a

Answers

Answer:

c) a ( b + c ) = (a + b ) + c

Step-by-step explanation:

The associative property is a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs.

what are facts about cross-sections (math)?

Answers

Answer: A cross section is the shape we get when cutting straight through an object.

Step-by-step explanation:

The shape we get when cutting straight through an object.

Please help me, smart people

sincerely,
-not smart person

Answers

Aaaaaaaaaaaaaaaaaaaaaa

What kind of symmetry does this figure have?
point
line
both line and point
neither

Answers

Answer:

line and point

Step-by-step explanation:

The kind of symmetry the figure given above posses is a line and point symmetry.

What is point symmetry?

A point Symmetry also known as origin symmetry is a Symmetry which occurs when every part of an object has a matching part. That is, the same distance from the central point but in the opposite direction.

Given that;

The objects looks the same when viewed from opposite directions.

We know that;

A line of symmetry is a line that cuts a shape exactly into two equal half. That is, if you fold the shape along the line, both halves would match exactly.

Therefore, the figure given above has both point and line Symmetry.

Learn more about line and point symmetry:

brainly.com/question/1553710

#SPJ3

The answer to a division problem in David's homework was 12. Which of the following expressions might he have solved? Select ALL that apply.
A.
410÷45
B.
34÷23
C.
39÷23
D.
714÷77
E.
23÷412
F.
413÷67

Answers

none of those equal 12?

None of those equal 12. Answers below are rounded.

A= 9.11
B= 1.48
C=1.70
D= 9.27
E= 0.06
F=6.16

Four students set up a lemonade stand. At the end of the day, their profit is $17.52. How much money do they each have when the profit is split equally?

Answers

So each student gets $4.38 each when the profit is split equally

Answer:

Step-by-step explanation:

halp me plez I dont wanna fail ( MUST BE A EXPRESSION)

Answers

Answer:

2x+15=33

Step-by-step explanation:

Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.

Since he started doing 15 sit-ups on the first day, the total number of sit-ups

after x days would be 2n+15.

Since he did a total of 33 sit ups today, then 2n+15=33

help please, I need to know the ordered pair for the origin!

Answers

The answer is (0,0) everything else is correct

if a van traveled 150 miles in 3 hours, how many miles could the van travel in 6 hours?

Answers

Answer:

300 because if he traveled 150 in 3 to find six just multiply by 2

Answer:

The van traveled 300 miles in 6 hours.

Step-by-step explanation:

150 divided by 3 = 50

So each hour the van traveled 50 miles.

50 x 6 = 300

bob has 4 times as many stickers as tina. how many stickers does bob have in terms of x?

options:
x - 12
4x
x + 7
12 - x
x - 2/3
4 + x
7x

Answers

the answer should be 4x :)

The answer should be 4x

780,000 divided by 10=?

Answers

Answer:

the answer is 78,000

Step-by-step explanation:

your welcome

Just do this in your head,780/10=78 then add on the three zeros from 780000 that you didnt use. 78>>> 78000

Answer=78000

PLZZZZ HELP WILL GIVE BRAINS

Answers

Answer:

209 dollars

Step-by-step explanation:

i did the math but am probably incorrect

(209) I think that’s the answer
:))

Below is a table showing the different sales prices of a bicycle that Juan wants to purchase. Juan wants to get the best deal. Which store offers the bike at the lowest price after the discount?

Pls show your work as you find the price of the bike at each store.

Answers

Answer:

Z-mart=12

abc sports=200

Bike world=66.25

Step-by-step explanation:

brainliest if corerct

Answers

Step-by-step explanation:

[tex]2x + 2 = 3x - 52[/tex]

[tex]2 + 52 = 3x - 2x[/tex]

[tex]54 = x[/tex]

Answer:

54=x

if possible can u give me brainlist if correct

Step-by-step explanation:

Need help asapppppppp

Answers

Answer:

Step-by-step explanation:

The first one should be correct

SMART PEOPLE PLEASE HELP!!!

Answers

Yea I agree with both of them as 1/4 and 25/100 is the same as 25%. As you can put 25 percent in a fraction form as they both used for example 1/4,2/8 or even 25/100.

A figure is reflected in the x-axis. How will the coordinates change?
A. The x-coordinates will stay the same.
B The x-coordinates will change sign.
C The y-coordinates will stay the same.
D The y-coordinates will change sign.

Answers

A or c I don’t know I hope this helps

Answer: The y-coodinates will change sign.

Step-by-step explanation: This is because it is being flipped over the x line. If you have the coordinate (2,3) then when you flip it you will end up with (2,-3)

You earn $60 for mowing 5 lawns. How much do you earn for mowing 15 lawns? Complete the ratio table to help you solve the problem. Write your answer in a complete sentence.

Answers

You earn $180 for mowing 15 lawns.

180 because 60 divided by 5 is 12 and 12x15=180 :) hope this helped

A scatter plot is made with the data shown:

Number of Weeks in Business 1 2 3 4 5 6 7 8 9
Number of Customers 0 2 4 6 8 10 12 14 16
What type of association will the scatter plot for this data represent between the number of weeks in business and the number of customers? (4 points)

a
No association

b
Positive linear association

c
Negative linear association

d
Positive nonlinear association

Answers

its b, positive linear association.

Other Questions

5% of a number is 31 1% of the same number is 6.2 Work out 13% of the number. PLSSSSSs HELPPPPPPPPPPPPP Which of the following is something citizens should do, but do not have to?a. Civic Necessityb. Civic Dutyc. Civic Responsibilityd. Civic Recommendation what is the y-intercept of a line that has a slope of -3 and passes through point (0-7) Assignment 4: Evens and OddsInstructionsWrite a program that will ask a user for how many numbers they would like to check. Then, using a for loop, prompt the user for a number, and output if that number is even or odd. Continue doing this as many times as the user indicated. Once the loop ends, output how many even numbers were entered and how many odd numbers were entered.Hint: For a number to be even, when the number is divided by 2, there should be no remainder - so you will want to use the modulus (%) operator.Hint: You will need two count variables to keep track of odd and even numbers.Sample Run 1How many numbers do you need to check? 5Enter number: 2020 is an even number.Enter number: 3333 is an odd number.Enter number: 44 is an even number.Enter number: 7777 is an odd number.Enter number: 88 is an even number.You entered 3 even number(s).You entered 2 odd number(s).Sample Run 2How many numbers do you need to check? 3Enter number: 1010 is an even number.Enter number: 33 is an odd number.Enter number: 400You entered 2 even number(s). You entered 1 odd number(s).Sample Run 2How many numbers do you need to check? 3Enter number: 1010 is an even number.Enter number: 33 is an odd number.Enter number: 400You entered 2 even number(s).You entered 1 odd number(s).Benchmarks1. Create and initialize two count variables - one for odd and one for even.2. Prompt the user to answer the question, How many numbers do you need to check?"3. Based on the previous input, create a for loop that will run that exact number of times. 1. Prompt the user to Enter number: 2.If that number is even, output [number] is an even number. 3.Update the even count variable. 4.Or else if the number is odd, output [number] is an odd number. 5.Update the odd count variable. 4.Output You entered [number] even number(s). 5.Output You entered [number] odd number(s)." In order to create a system of equations with the same solution as the system {x+y=102x+y=14, { x+y=10 2x+y=14 , Camilo multiplied both sides of the second equation by a number, added the new equation to the first equation, and replaced the first equation with the result. Which system of equations could be Camilo's new system? PLEASE I NEED THIS I WILL MARK BRAINLIEST AND GIVE YOU 40 POINTS help please asap. chem sucks Noah has a coupon for 30% off at his favorite clothing store . He uses it to buy a hoodie . The regular price of a hoodie is $27. What did Noah pay for the hoodie? Explain where the energy in an ecosystem comes from and how it is distributed to all living things in that ecosystem. Who needs help in edge classes? $50 a class Its due late tonight can some pls help me pass can someone please do this on a separate piece of paper if your helping me with the whole page if not can you just type the answer for number 2 it would be very helpful! i will give a brainlist Seven more than half of a number is 12. How can i identify a slope -6O A. Q = (1,2); P =(3,4); R = (5,6)O B. Q = (3,5); P = (7,6); R = (5,2)O c. Q = ( 6, 10); P = ( 14, 12); R = (10,4)D. Q = (12, 20); P = ( 28, 24); R = (20,8)Other Thestudentselectedtoleadourschoolbeautificationcommitteehasseveralinspiringideasincludingamuralinthegymandtherelocationofthegarbagecansfromneartheschoolentrancetobehindthecafeteria How illustration in Davy Crockett Saves the world support the tone on the Tall Tale Puerto Rico, Cuba y Repblica Dominicana son conocidas por sus lindas playas. Tanto lasplayas del mar Caribe como las del ocano Atlntico son parte de unos magnficos ecosistemasque sirven de hbitat para muchas plantas y animales. Los ecosistemas son comunidades de seres vivos que dependen unos de otros parasobrevivir en un mismo ambiente. Las playas son ecosistemas marinos que proveen a variasespecies todo lo que necesitan para poder vivir. Estas especies, a su vez, tienen una relacin simbitica entreellas que les permite convivir en el mismo hbitat.Cuba, Repblica Dominicana y Puerto Rico estn en el mar Caribe. convivir en el mismo hbitat.Las playas son extensiones de tierra que bordean algunas costas y que proveen un acceso fcilal mar. Las corrientes marinas, el oleaje y el viento forman playas de diferentes formas ycolores. En Puerto Rico, Repblica Dominicana y Cuba las playas reciben agua del ocanoAtlntico por el norte, y del mar Caribe por el sur. Las playas de Cuba tambin reciben agua delGolfo de Mxico. Estas playas sirven de refugio a animales como los peces, los cangrejos, lasalmejas, las cucarachas de mar y las estrellas de mar, entre otros. Tambin otros animalescomo los delfines, las ballenas y los manates a veces visitan estas costas. Cerca de las costas, especialmente las del Caribe, tambin hay arrecifes. Los arrecifesson ecosistemas Los arrecifes son ecosistemas importantes para muy importantes para la vidamarina ya que ofrecen la vida marina. muchos recursos a las especies que viven en ellos, Entrelas especies que habitan en los arrecifes, estn los peces, los pulpos, los corales, los pepinos demar, las estrellas de mar y los erizos. Las relaciones entre estas especies son importantes paramantener la salud de estos ecosistemas. En varias temporadas del ao, es comn observar algas marinas acumuladas en lasplayas. Esto se debe, entre otras razones, a que las playas sirven de filtro para renovar y limpiarlas impurezas del mar. El mar funciona como una fuente de energa y de desarrollo econmico,tanto para el comercio de pescado y mariscos, como para el turismo. Adems, las playas sirven para disfrutar deactividades en familia y con otros miembros de la comunidad. La estabilidad de los ecosistemas marinos puede afectarse por eventos naturales, comolas tormentas tropicales y los huracanes, o por los humanos. Los arrecifes no slo tienen lafuncin de servir de hbitat a cientos de especies, sino que tambin les dan seguridad, ya queestos funcionan como excelentes barreras de proteccin contra los huracanes o el fuerteoleaje. Sin embargo, la contaminacin humana dana tanto los ecosistemas de los arrecifescomo los de las playas. Cuando las personas echan basura o desechos de txicos en las playas, muchas especiesmarinas se afectan y hasta mueren. Varias organizaciones dedicadas a la proteccin delambiente planean actividades para recoger basura y limpiar las playas. Pero eso no es suficientepara proteger estos delicados ecosistemas. Es necesario que las personas dejen de contaminarlas playas para evitar que desaparezcan muchas de las especies que habitan en ellas. Los huracanes afectan la estabilidad de los ecosistemas. Las playas sirven de filtro para limpiar las impurezas del mar.3. Por qu son importantes las relaciones entre las especies? a. porque ofrecen muchos recursos a las especies que habitan en ellosb. porque ofrecen muchos recursos para los pescadoresc. porque as se mantiene la salud de estos ecosistemas d. porque as ms gente puede ir a la playa4. Por qu ayuda el mar Caribe a desarrollar la economa? a. porque produce pescado, mariscos y viene gente a visitar a la zona b. porque hace que los pescadores se vayan a trabajar a otro lugarc. porque las especies desarrollan la simbiosis en los arrecifes y en las playas d. porque debido a los huracanes la gente se va a otras playasEn tus propias palabras, escribe las respuestas a una de las siguientes preguntas. Buscainformacin en el Internet. 1. Qu pases son parte del mar Caribe y cmo se benefician sus economas de este? 2. Qu actividades realizan las familias y otros miembros de la comunidad en las playas? 3. Cules son algunas especies que tienen relacin simbitica en los ecosistemas del Caribe yen qu consiste esta relacin? A vase in the shape of a cube measures 8 inches on each side. The vase is half full of water. How many cubic inches of water are in the vase?