Mathematics Middle School

Combine the Expression: (2a + 8) + (4a + 5)

Answers

Answer 1

Answer:

6a +13

Step-by-step explanation:

(2a + 8) + (4a + 5)

Combine like terms

2a+4a +8+5

6a +13

Answer 2

Answer:

6a + 13

Step-by-step explanation:

1. simplify

(2a + 8) + (4a + 5)

2. Reorder the terms

(8 + 2a) + (4a + 5)

3. Remove parentheses

8 + 2a + 4a + 5

4. Combine like terms

8 + 5 = 13

2a + 4a = 6a

So, 6a + 13 is your answer.

Related Questions

A fast food chain surveyed a random sample of students to determine what pizza they prefer. Cheese pizza was preferred by 40 students. Pepperoni pizza was preferred by 28 students. Based on the results, how many of the 340 students can be expected to prefer cheese pizza?

Answers

Answer:

11.76

Step-by-step explanation:

We are given that,

Total number of students = 340

Students that prefer cheese pizza = 40

Students that prefer pepperoni pizza = 28

Thus, we get that,

The proportion of students that prefers cheese pizza =

i.e. The proportion of the students preferring cheese pizza = 0.1176 = 11.76%

Hence, 11.76% of the students prefer cheese pizza.

Brett is comparing the graphs of y = 2X and y = 5x. Which statement is true?

Answers

The correct question is:

Brett is comparing the graphs of y = 2^x and y = 5^x. Which statement is true?

(1) The y-intercept of y = 2^x is (0,2), and the y-intercept of y = 5^x

is (0,5). [

(2) Both graphs have a y-intercept of (0,1), and y = 2^x is steeper.

(3) Both graphs have a y-intercept of (0,1), and y = 5^x is steeper.

(4) Neither graph has a y-intercept.

Answer:

(2) and (3) are true.

Step-by-step explanation:

The correct options are:

(2) Both graphs have a y-intercept of (0,1), and y = 2^x is steeper. Since X < 0

(3) Both graphs have a y-intercept of (0,1), and y = 5^x is steeper. Since X > 0

Jack wants to buy 30 chocolate chip cookies that are $1.25 each. If sales tax is 7.5%. What will Jack’s total bill be?

Answers

Answer:

which will be about $2.81

Step-by-step explanation:

30 times 1.25 = 37.50

then multiply that by 7.5%

i may be wrong. i am sorry if i am worong

Answer:

$318.75

Step-by-step explanation:

30 cookies x $1.25 = $37.5

37.5 x 7.5% tax = 281.25

37.5 + 281.25 = 318.75

Translate the statement into an equation. Then solve the equation.
The sum of 8 and 3 times a number is 23.
3x - 8 = 23; 5
8+ 3x = 23,5
3x = 8+23; 10
(8 + 3)x = 23; 2

Answers

It’s is the second option because the description matches

An equilateral triangle has perimeter 57cm, what is the length of one of the sides?

Answers

Answer:

19 cm

Step-by-step explanation:

An equilateral triangle has all 3 sides the same length

P = 3s where s is the side length

57 = 3s

Divide each side by 3

57/3 = 3s/3

19 =s

5x+2y = 10
Identify the y-intercept of the
following equation.

Answers

Answer:

y intercept = 10

hope this answer helped

what are the solutions to the system of equations graphed below?

Answers

Answer:

(-3,-3) and at (0,6)

Step-by-step explanation:

The solution to the system of equations is where the graphs intersect

The graphs intersect at (-3,-3) and at (0,6)

There are six slices of cake left at the end of a party. If that was 2/9 of the total of the cake that the party began with, how many slices were in the cake to begin with? (enter you answer as a number only, no words) *

Answers

Answer:

Step-by-step explanation:

6 divided by 2/9=27

Three of the bedrooms in Lana’s house are rectangular, each 101/2 feet by 111/4 feet, What is the least amount of carpeting needed to completely cover the three floors?

Answers

Answer:

The answer is D, or 354 3/8 ft^2

A cylinder has a height of 19 inches and a radius of 18 inches. What is its volu
3.14 and round your answer to the nearest hundredth.

Answers

Answer:

19339.64 in³

Step-by-step explanation:

Volume of a cylinder: V = π · r² · h

V = π · 18² · 19

V = π · 6156

V = 19339.64 cubic inches

Which phrase represents this expression?

(47−17)×4

A. 4 times the difference of 47 and 17

B. 4 times the difference of 17 and 47

C. the difference of the product of 4 times 17 and 47

D. the difference of 47 and the product of 4 times 17

Answers

A. 4 times the difference of 47 and 17

un unitățile de măsurat lungimea mai mici decât unitatea principală sunt.......................... ................. Și................. Și se numesc................ Metrului. Decametrul, hectometrul și............. sunt................... metrului.

Answers

Answer:

english plz !!!!!!!!!!

Step-by-step explanation:

David correctly factored the expression m^2-12m - 64.
Which expression did he write?
(1) (m - 8)(m - 8) (3) (m - 16)(m +4)
(2) (m - 8)(m + 8) (4) (m +16)(m - 4)
Explain why

Answers

Answer:

(m-16)(m+4)

Step-by-step explanation:

To factor a quadratic expression

First write the variable in each parentheses, then put negative/ positive, after that ask yourself what numbers have the product of the coefficient of x^0 and the sum of x^1.

David correctly factored the expression m^2 - 12m - 64 and got (m - 16)(m + 4).

How to factor an equation?

An equation can be factored into its factors by splitting the middle term of the equation.

The given expression can be factored as shown below:

m^2 - 12m - 64 = 0

⇒ m^2 - 16m +4m - 64 = 0

⇒ m(m - 16) + 4(m - 16) = 0

⇒ (m + 4)(m - 16) = 0

The factors of the equation m^2 - 12m - 64 = 0 are (m - 16)(m + 4).

Therefore, we have found that David correctly factored the expression m^2 - 12m - 64 and got (m - 16)(m + 4). The correct answer is option C or (3).

Learn more about factorization here: https://brainly.com/question/25829061

#SPJ2

Montel needs to determine the distance from -3 to zero. Which statement best desribes the process Montel should use?

F. Find the absolute value of negative three.

G. Find the opposite of positive three.

H. Find the absolute vaule of positive three.

J. Find the opposite of negative three.

Answers

Answer:

Step-by-step explanation:

Absolute value finds the distance between a number and 0, which is what the question is asking for -- the distance between -3 and 0.

Find the greatest common factor of 6w^3 and 8w.

Answers

Answer:2w

Step-by-step explanation: Find the prime factors of each term in order to find the greatest common factor (GCF).

Which expression can be used to find the surface area of the following rectangular prism?
A.15+15+10+10+6+6
B.10+6
C.10+10+6+6
D.15+15+10+10+6

Answers

A is the right answer

A honey bee has a mass of 100 mg. How many bees would you need for a mass of 3 kg?

Answers

You’ll need 30,000 honey bees

Answer:

you need 3000000 bees

Step-by-step explanation:

1kg=1000000mg.

1000000x3=3000000

hope this helps, have a good day :)

The value of an antique can be predicted by the expression 250 * (1.12) ^ t where is the number of years since 2014. What does the value 250 represent?

Answers

Answer:

mark brainlyest and I will

The value 250 represents the predicted value of antique in year 2014.

Given Expression,

[tex]250\times(1.12)^{t}[/tex]

Here [tex]t[/tex] represents the no. of years since 2014.

Now clearly 250 shows here the predicted price of the antique in year 2014 and [tex](1.12)^t[/tex] shows how much percent the product is increasing over the year.

Hence the value 250 represents the predicted value of antique in year 2014.

For more details on Decay rate problems follow the link:

https://brainly.com/question/8725872

there's something wrong with my eyes, i can't see when i close them. plz help me!!!!!

Answers

Step-by-step explanation:

Wow no way! You must have like a disorder or smthing! U should go to the doctor right away! U know what, so should I since I have the same problem as u!!

Answer: Your eyelids are doing it’s thing.

Step-by-step explanation: This happens to me as well. I can’t see when I close my eyelids.

Stan guessed on all 10 questions of a multiple-choice quiz. Each question has 4 answer choices. What is the probability that he got at least 2 questions correct? Round the answer to the nearest thousandth.

P (k successes) = Subscript n Baseline C Subscript k Baseline p Superscript k Baseline (1 minus p) Superscript n minus k. Subscript n Baseline C Subscript k Baseline = StartFraction n factorial Over (n minus k) factorial times k factorial EndFraction
0.211
0.244
0.756
0.944

Answers

Answer:

The answer is C.) 0.756

Step-by-step explanation:

Answer:

[tex]Area=45\pi$ square inches[/tex]

Step-by-step explanation:

The radius, r of the expanding circle of oil is modeled by the function:

[tex]r(s)=3\sqrt{s}[/tex], where s is time in seconds.

When s=5

Radius, [tex]r(5)=3\sqrt{5}$ inches[/tex]

Area of a circle[tex]=\pi r^2[/tex]

Therefore, area of the oil spill when s=5 seconds is:

[tex]Area=\pi (3\sqrt{5})^2\\=\pi *3^2*(\sqrt{5})^2\\=\pi *9*5\\$Area=45\pi$ square inches[/tex]

The area of the spill when s=5 seconds is 45pi square inches.

What value of c makes the equation true? Assume x greater-than 0 and y greater-than 0

RootIndex 3 StartRoot StartFraction x cubed Over c y Superscript 4 Baseline EndFraction EndRoot = StartFraction x Over 4 y (RootIndex 3 StartRoot y EndRoot) EndFraction
c = 12
c = 16
c = 64
c = 81

Answers

Answer:

is C=64

Step-by-step explanation:

Answer:

c=64

Step-by-step explanation:

I took the test

Help me please............

Answers

Answer:

Step-by-step explanation:

16*[tex]x^{2}[/tex]

Answer:

16* x^2

Step-by-step explanation:

k* x^n

First simplify the expression:

4^2*x^2

So:

16* x^2

please help me with this it is the last quastion i need help with

Answers

Answer:

$92.92

Step-by-step explanation:

$72.60 * 20% = 14.53

$72.60 + 8%= $78.40

$78.40 + $14.52 = $92.93

She paid $87.12 for the service.
20% of 72.60 (or 72.60 x .20) is 14.52.
72.60 + 14.52 = 87.12

Other Questions

The following information is taken from the accounts of Latta Company. The entries in the T-accounts are summaries of the transactions that affected those accounts during the year. Manufacturing Overhead (a) 486,144 (b) 405,120 Bal. 81,024 Work in Process Bal. 10,880 (c) 754,000 298,500 90,500 (b) 405,120 Bal. 51,000 Finished Goods Bal. 39,000 (d) 662,000 (c) 754,000 Bal. 131,000 Cost of Goods Sold (d) 662,000 The overhead that had been applied to production during the year is distributed among Work in Process, Finished Goods, and Cost of Goods Sold as of the end of the year as follows: Work in Process, ending $ 24,480 Finished Goods, ending 62,880 Cost of Goods Sold 317,760 Overhead applied $ 405,120 For example, of the $51,000 ending balance in work in process, $24,480 was overhead that had been applied during the year. Required: 1. Identify reasons for entries (a) through (d). 2. Assume that the underapplied or overapplied overhead is closed to Cost of Goods Sold. Prepare the necessary journal entry. 3. Assume that the underapplied or overapplied overhead is closed proportionally to Work in Process, Finished Goods, and Cost of Goods Sold. Prepare the necessary journal entry. Put in order rational numbers Did anyone else thing just stop working?it said brainly had a web error? Choose the right word to complete each sentence the battle of Fredericksburg came (before, after, during) the battle of chancellorsville Why and how did the CivilRights Movement expand? Which tables display linear functions? Check all that apply. Who was the first African American senator?A. Blanche K. BruceB. Hiram Rhodes RevelsC. Jonathan Clarkson GibbsD. Frederick Douglass 7. Over which issue did the British and Boers go to war in the late nineteenth century? (1 point)independence for South Africacompetition for resourcescontinuance of the slave tradeestablishment of a democracy Cape Canaveral, Florida is where much of the worlds space exploration takes place. Geographically, this location was well suited to become America's spaceport. There are several reasons this is such a good location. It was not highly populated and is flat land facing the ocean. Railroads and ships were able to bring in the materials used to build the launch pad and space station. All of the following are contributions of the Space Center for Florida except which one? A)Education programs flourished. B)Thousands of new workers moved to the state. C)Factories manufacturing space products started all over the state. D)All the money that came into the state was used for space research. Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionO the ability to grow largerextra fat, for warmth whats the mean absolute deviation of 1, 3, 2, 2, 1, 3, 3, 1 How many grams of CO2 are produced from the burning of 1.0 mol of amyl alcohol, C5H11OH? If a polynomial function f(x) has roots 0, 3, and 2+ V5, what must also be a root of f(x)?-2-sqrt152-sqrt1515-sqrt 215+sqrt 2 Where was the 1st Battle of the Civil War held? In 2009, how many American homes had Internet access? A. 50% B. 70% C. 80% D. 90% What is the percentage composition of cobalt in cobalt(II) fluoride, CoF2? If x^2-kx+9=0 has equal roots,find the positive value of k Escoge la opcin que completa la frase con la forma correcta de la expresin tener que. Choose the option to complete the sentence with the correct form of the expression tener que.Ponchito quiere tener una experiencia autntica. Por eso, ________ comer la comida tradicional y no comer solo en el hotel. tiene que tienes que tengo que tienen que - What was the likely reason for Anna to be in Yalta? The French and Indian War began because some American colonists felt that: a. taxes were too high, so they solicited help from both the French and the Indians. b. they had to aid the English, who were fighting Napoleon in Europe. c. the Indians along the frontier finally had to be subdued. d. French Jesuits were converting too many Indians to Catholicism, endangering the Protestant majority on the North American continent. e. France was encroaching on land claimed by the Ohio Company.