Mathematics Middle School

Evaluate for x = 2.

(12x + 8)
4
A) 4
B) 5
C) 6
D) 8

Answers

Answer 1
what you want to do here is plug 2 in for x. when a question asks you to evaluate a certain equation at a certain number, it's just asking you to plug the value in for your variable. i'm assuming that 12x + 8 is meant to be set over 4 as a fraction.

(12(2) + 8)/4 ... figure out the top first. 12*2 = 24, 24 + 8 = 32.

32/4 = 8, so your correct choice is D.
Answer 2
Final answer:

To evaluate the expression (12x + 8) / 4 for x = 2, you multiply 12 by 2, add 8, and then divide by 4. The final answer is 8, which corresponds to option D.

Explanation:

To evaluate the expression (12x + 8) / 4 for x = 2, you substitute the value of x into the expression and then simplify. First, multiply 12 by 2 to get 24, then add 8 to get 32. After that, divide 32 by 4 to get the final answer.

Here is the step-by-step calculation:

Substitute x with 2: (12*2 + 8) / 4.Multiply 12 by 2: (24 + 8) / 4.Add 24 and 8: 32 / 4.Divide 32 by 4: 8.

The correct answer is D) 8.

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Related Questions

What is -2 plus 2X equalsNegative X plus 2 plus x

Answers

x=2, you cancel the negative x and positive x on the right side, add 2 to to both sides for 2x = 4, and then divide by 2.

Answer:

x=2

Step-by-step explanation:

-2 + 2x = -x + 2 + x

-2 + 2x = -x + x + 2

-2 + 2x = 2

+2          +2

2x = 4

Divide 4 by to 2 in order to isolate the variable and then you get the answer of 2.

Solve in simplest form 2t=4/7

Answers

The correct answer is t=2/7
t=2/7 is the simplest form of 2t=4/7

What is the value of m?
2/3m + 3 - 5/6m = -15

Answers

this is why you have a calculator m=3
2 over 3 (m) + 3 - 5 over 6 (m) - [-15] ➡ 0
5 over 6 (simplify )
2 over 3 (m) + 3 - 5 over 6 (m) - [-15] ➡0
2 over 3 (simplfiy)
[2 over 3 (m) + 3 - 5m over 6] - [-15] ➡ 0
2m + 9 over 3
2m + 9 over 3 - 5m over 6 - -15➡0
18 - m over 6
18 - m over 6 - [-15] ➡ 0
108 - m over 6
108 - m over 6 (6) (0)
So, the value of "m" would have to be "108"
m= 108

Raul deposited $3000 into a bank account that earned simple interest each year. After 3.5 years, he had earned $262.50 in interest. If no money was deposited into or withdrawn from the account, what was the annual interest rate? Enter your answer in the box.

Answers

I=prt,,262.5=3000*3.5 r,,r=262.5/3000*3.5= use the calculator

Answer:

assuming simple interest

I=PRT

I=262.5

P=3000

R=?

T=3.5

262.5=3000(?)(3.5)

262.5=10500?

divide both sides by 10500

0.025=?

2.5%=?

answer is 2.5%

What are the factors of 48?

Answers

The factors of 48 include 1, 2, 3, 4, 6, 8, 12, 16, 24 and 48. The number 48 is divisible by each of the factors without any remainder being left over.
The factors of 48 are 1,2,3,4,6,8,12,16,24, and 48.

Jenny has 50 square tiles. She arranges the tile into a rectangular array of 4 rows.How many tiles will be left over?

Answers

12.5 for each tile?
Zero will be left over.
you just have to divide 50 by 4 and it gives you 12.5 and five is the leftover

Find the perimeter and area of this rectangle 12 in by 6.5 in

Answers

I hope this helps you




Perimeter =2 (width +length )


Perimeter =2 (6,5+12)


Perimeter =2.18,5


Perimeter =37
12 by 6.5. Okay first you would add 12 and 6.5 but thats not the whole perimeter you want to add both digits again so it would be... 12+12+6.5+6.5 which would give you 37 for the perimeter. For the area you would multiply the two sides which is 12 times 6.5 which would be 78. But don't forget to add the !² above the number other wise the answer will be wrong.


Perimeter-37in
Area-78in²

Write 1,340,000,000,000 in expanded form with exponents

Answers


1 × 1010+3 × 109+4 × 108+0 × 107+0 × 106+0 × 105+0 × 104+0 × 103+0 × 102+0 × 101+0 × 100

A square garden with a side length 150 m has a square swimming pool in very center with a side length 25 m .Calculate the area of the garden.

Answers

Total garden area = 150² = 22500m²

Pool area = 25² = 625m²


Actual garden area = 22500 - 625 = 21875m²

Final answer:

Calculate the area of a square garden with a swimming pool in the center.

Explanation:

The area of the garden can be calculated by finding the area of the square garden and subtracting the area of the square swimming pool.

Area of the square garden:

Area = side length × side length

= 150 m × 150 m = 22500 m²

Area of the swimming pool:

Area = side length × side length

= 25 m × 25 m = 625 m²

Area of the garden: 22500 m² - 625 m² = 21875 m²

Therefore, the area of the garden is 21875 m².

what is 20% more than 1.50

Answers

Hey there! Hello!

In order to find a percentage of a number, the easiest thing to do is convert it to a decimal. You would do this by thinking of what part of one your percentage represents, which, in this case, is 0.20 of one. Then, you would multiply this by your number given:

[tex]1.50*0.20=0.30[/tex]

When you add 0.30 to 1.50, your answer will be 1.80. 

I hope this helped you out! Feel free to ask me any additional questions if you have any. :-)

What is 1/3x -5/7 equal to

Answers

It can't be simplified because 1/3x and -5/7 aren't like terms and therefore you cannot do addition or subtraction with them.

If you meant x as in multiplied by then here is the solution:
1/3*-5/7
(1*-5)/(3*7)
-5/21

Hope this helps :)

suzanne buys 6 paints sets. each set contains the same number of brushes. she buys 18 brushes.how many bruxhes are in each paint set?

Answers

3 bruches i think

Because you need to divide
So we know that there are 6 sets, and there is an equal number of 18 brushes in each set. This is simple maths: 6/18 which is 3. So each set has 3 bushes, so if we have 6 sets (3 x 6) = 18.

Ans = 3

what is the answer to 50.28 divided by 4 (long division) PLEASE SHOW YOUR WORK

Answers

I can't show my work but:::::  12.57 is the answer

what is 2y+6x=0 in slope-intercept form?

Answers

to change this into slope-intercept form, you need to isolate your y variable.

slope-intercept form is y = mx + b

2y + 6x = 0 --- subtract 6x
2y = -6x --- divide by 2
y = -3x is your answer
Put this equation in y=mx + c form,
2y + 6x = 0
2y = -6x + 0
y = -3x + 0
Hence, slope intercept form of this eq. is y=-3x + 0.

What is 7/8-1/2 in simplest form

Answers

7/8-1/2=13/4
how to get the answer:
u find the lowest common factor for both denominators:8
7/8-1/2
28  -2         26           13
---------- = -------- = --------
    8               8           4

To subtract fractions like 7/8 - 1/2 and simplify the result, find a common denominator and perform the subtraction to get 3/8.

To subtract fractions with different denominators like 7/8 - 1/2 and express the result in simplest form, you need to find a common denominator. In this case, the common denominator is 8. So, we rewrite both fractions with a common denominator of 8:

7/8 - 4/8 = 3/8

Therefore, 7/8 - 1/2 = 3/8 in simplest form.

A theater can sell 600 tickets for each performance.for one performance,80% of the tickets were sold.For another performance,91% of the tickets were sold.What was the total number of tickets sold for both performances?

Answers

For the two performances, a total of 1026 tickets were sold.

To find the total number of tickets sold for both performances, we calculate the number of tickets sold for each performance and then add them together. The theater can sell 600 tickets for each performance.

For the first performance:

80% of 600 tickets = 0.80 * 600 = 480 tickets

For the second performance:

91% of 600 tickets = 0.91 * 600 = 546 tickets

Therefore, the total number of tickets sold for both performances is:

480 tickets (first performance) + 546 tickets (second performance) = 1026 tickets sold in total.

Students at a high school filled out a survey. The results showed that out of 640 students, 331 speak more than one language. How many students speak only one language?

Answers

640 - 331 = 309

309 students only speak one language.

Answer:

309

Step-by-step explanation:

640 - 331 = 309

Simplify. –2 • (4) – 3 • (–5) = A. 55 B. 7 C. –23 D. –120

Answers

Your answer to the question is B) 7

Please help me by those math problems!

Answers

To solve for the first question, all it is asking is if you were to perform the operation, will the final result be less than the exponential base of the question.

For example
2^3 = 8, 8 is not less than 2.
So the solution would be B. Since (5/6)^2 = 25/36 and 5/6 which is 0.8333 is more than 0.69444, thus the value is less than the base.

To solve for number 2, all you have to do is multiply the cost of chicken meal to number of chicken meals, and the cost of the burger meals to the number of burger meals, then divide the total money for chicken meals by the total money altogether.

Chicken - 9 • 5 = 45
Burger - 15 • 6 = 90
Total money = 45 + 90 = $135.00
$45.00/$135.00 = 0.3333 • 100 = 33.3 or 33 1/3 %.

Q3. According to the order of operations BEDMAS, you would first do B. Division as it is the operation you would do first in the pair of brackets, before adding.

For Q4, you would need to perform a branching diagram to solve for the number of people chosen.

For Q5. Prime numbers are numbers that only have 2 factors, it can divide by one and itself, out of the options the only ones that are prime are 2 and 5, written in exponential form, so A.

For Q6. The solution is B. 23

For Q7. The expression is equivalent to (3.6)^4 thus is D.

For Q8. The prime numbers for 80 are 2 and 5, and thus the expression to give 80 would be D.

Word problems for 5x=45

Answers

Andy brought 5 boxes of chocolate, there was 9 chocolates on each boxes and the sum of all was 45 chocolates

41 2/3% as a fraction in simplest form

Answers

41 2/3 = 41.6 so it is 41.6%  41.6/100 = 10.4/25 =2.08/5 

Mindy read 8 pages of her book the first day, 15 pages the second day, and 22 pages the third day. if the pattern continues , how many pages of her book will she read on the sixth day

Answers

Entirely impossible to know, there are an infinite number of sequences which have the terms 8, 15, and 22 for n=1,2,3 -you could say that if you wanted to give a "smart" answer and it would be true
otherwise 43 pages on 6th day I think
43 pages 8+7=15  15+7=22  22=7=29  29+7=36  36+7=43 

Write 5 hundred + 56 ones in standard form

Answers

I think 556 is the answer. I hope it helps!
you can use the mx + b form

$7.59 divided by 2.2 ?

Answers

The quotient of two numbers is $3.45.

What is the division?

The division is one of the basic arithmetic operations in math in which a larger number is broken down into smaller groups having the same number of items.

Given that, $7.59 divided by 2.2.

Now, 7.59 ÷2.2

= 7.59/2.2

= $3.45

Therefore, the quotient of two numbers is $3.45.

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Final answer:

The division of $7.59 by 2.2 results in approximately 3.45. This can be calculated using long division or a calculator after adjusting for the decimal in the divisor.

Explanation:

The student has asked how to divide the number $7.59 by 2.2. This is a basic arithmetic operation involving division. To perform this division, you can use long division or a calculator. When you divide $7.59 by 2.2, you will get approximately 3.45, which is the quotient. Here's a step-by-step breakdown:

Set up the division with $7.59 as the dividend and 2.2 as the divisor. Since we are dividing by a decimal, we can move the decimal point of the divisor (2.2) to the right to make it a whole number (22). Simultaneously, we also move the decimal point in the dividend (7.59) the same number of places to the right, changing it to 759. Now, divide 759 by 22 using long division or a calculator. The result is approximately 34.5, but since we moved the decimal one place to the right, we must move it back one place to the left in our answer, resulting in 3.45.

A book sold 32,500 copies in its first month of release. Suppose this represents 8.4% of the number of copies sold to date. How many copies have been sold to date?

Answers

2,730 have been sold to date

Identify the percent, amount, and base in this problem.

75% of what number is 30?

a. Percent = 30%, Amount = 75, Base = unknown

b. Percent = 75%, Amount = unknown, Base = 30

c. Percent = 75%, Amount = 30, Base = unknown

d. Percent = unknown, Amount = 30, Base = 75

Answers

percent = 75%
base = unknown ...the base is the number that follows " of "
amount = 30

The Percent = 75% , base = unknown.

And the base is the number that follows " of " amount = 30.

Given that,

75% of what number is 30.

We have to determine,

Identify the percent, amount, and base in this problem.

According to the question,

Percentage means a number or a ratio represented in the form of fractions of 100. It is represented using the percentage sign ‘%’.

The percentage is defined as how much of one quantity is made by another quantity and it is evaluated in terms of 100.

The percentage is used to express fractions of a whole, while percentiles are the values below which a certain percentage of the data in a data set is found.  

Therefore, Percent = 75% , base = unknown.

And the base is the number that follows " of " amount = 30

To know more about Percentages click the link given below.

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Mr. Arcinega will buy water bottles for the 7,175 runners who entered the Tri-State 5k Fun Run. The water bottles are packaged 18 per case. What is the least number one water bottle? A 398 B 380 C 399 D 400 PLEASE HELP

Answers

i think its B but in am not so sure

PLEASE HELP!!! What are the cross products of the problem of the proportion 12/20=3/5

Answers

Just divide 12/20 by 4/4 and you will get 3/5.

the ratio of oxygen atoms to sulfur atoms in sulfar atoms in aulfar

Answers

In simplest form the ratio is 3:6

The missing ones are:
9:18
21:42
27:54

Hope this helps :)

The equivalent ratios from the table is 6/12 =9/18 =21/42 =27/54.

What is the ratio?

The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.

Given that, the ratio of oxygen atoms to sulfur atoms in sulfur dioxide is always same.

From the table, the ratio is

6:12

6/12 =9/x

6x=108

x=18

6/12 =21/y

1/2=21/y

y=42

6/12 =z/54

1/2 =z/54

z=27

Therefore, the equivalent ratios from the table is 6/12 =9/18 =21/42 =27/54.

To learn more about the ratio visit:

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A textbook costs $65.49 before tax the tax on the text book is 6.5% what is the total cost of the textbook?

Answers

this is porportions you know
the answer is 69.74685
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