4x – 5 + 2(x – 3) = 12x + 7
X=

Answers

Answer 1

Answer:

-3

Step-by-step explanation:

4x - 5 + 2(x - 3) = 12x + 7

4x - 5 + 2x - 6 = 12x + 7

4x + 2x - 5 - 6 = 12x + 7

6x - 11 = 12x + 7

collect like terms

6x - 12x = 7 + 11

-6x = 18

-x = 3

x = -3


Related Questions

What is the answer to v/3 +17=19

Answers

Answer:

v=6

Step-by-step explanation:

(v/3+17=19)x3

v+51=57

v=57-51

v=6

Please help me with this question.

Answers

Answer: 36

Step-by-step explanation:

3x6x2 I think..

What I would do is draw it out in a net. Then find the area of each area of the net. After you calculate the areas, you'll get these numbers: 18, 18, 12, 12, 6, and 6. Then add them all together.

The final answer is 72 square centimeters.

Identify the coeficient: 6x + 19

Answers

Answer:

25x

Step-by-step explanation:

6x + 9 = 25x

Answer:

6

Step-by-step explanation:

Coefficients are the numbers in terms with the variable

6 is the number with the variable (x)

Para llenar una piñata con dulces se necesitan 8.3 libras de dulces ¿cuantos kilogramos se tuvieron que comprar?

Answers

Answer:

Tuvieron que comprar 3.73 kg.

Step-by-step explanation:

Para obtener la  respuesta, tienes que encontrar a cuántos kilogramos equivalen 8.3 libras de dulces y para esto puedes utilizar una regla de tres teniendo en cuenta que 1 libra es igual a 0.45 kilogramos:

    1 libra    → 0.45 kilogramos

8.3 libras   →             x

x=(8.3*0.45)/1=3.73 kg

De acuerdo a esto, la respuesta es que tuvieron que comprar 3.73 kg.

Antonio writes the equation 80.4 ÷ d = 0.0804.


Part A

What value of d makes the equation true?

A. 10 to the 2 power

B. 10 to the 3 power

C. 10 to the 4 power

D. 10 to the 5 power

Answers

Answer:

B

Step-by-step explanation:

Because

A)

[tex]80.4 \div {10}^{2} = 0.8.4[/tex]

B)

[tex]80.4 \div 10^{3} = 0.0804[/tex]

C)

[tex]80.4 \div {10}^{4} = 8.04 \times {10}^{ - 3} [/tex]

D)

[tex]80.4 \times {10}^{5} = 8.04 \times {10}^{ - 4} [/tex]

factoring special case
factor each completely
9x2-1 ​

Answers

Answer should be 17.

Sarah had 25 candies. Sarah gave 2/5 of the candies to her sister. Of the amount left, she gave 2/3 to her friend. How many candies does Sarah have left for herself?

Answers

3 left for herself (:

Answer:

5 candies left for herself

Step-by-step explanation:

please help me out, thank youuu !

Answers

10.9 your welcome :)

What is the midpoint of the segment with endpoints (1,9)and(-3,5)

Answers

Answer:

(-1,7)

Step-by-step explanation:

You have five seasons of your favorite TV show on DVD. If you randomly select two of them from a shelf, what is the probability that you will select season one first and season two second?



How many items are in the sample space? =?

(HINT: Think 5 seasons taken 2 at a time)

What is the probability that you will select season one, and then season 2?

Answers

Answer:

5^2 =25/ 2.5x 6 =12

Step-by-step explanation:

1/20.
P(5,2)=20
-isabella

Chris rents a car for a total of £375 The rental charges are £150 for the first day and £75 per day after that. For how many days did Chris rent the car? Show working

Answers

Answer:

3 days

Step-by-step explanation:

375-150. You get 225. Then you do 225/75 to get 3. 3days

solve the inequality m - 3 less than -2

Answers

Answer:m>1

Step-by-step explanation:

You add 3 to both sides because you minusing the 3. Then since your working with a negative you have to switch the signs

The box plot show the lengths of the songs on two digital music players in minutes .Which statement is best supported by the information in the box plots ?

Answers

Solution :

In the figure, the box plot represents the lengths of the songs of the two digital music players that is in minutes.

From the figure, we can see that for the music player Y, the interquartile range of the data is small.

And the interquartile range of data is more for the music player X.

So, we can conclude that the interquartile range of data is greater for Music player X than the interquartile range data of music player Y.

I WILL GIVE BRAINLIEST PLEASE HELP

1. Melanie invested $12,200 at 4.8% interest compounded semiannually, and she wants to know how much her investment will be worth in 8 years. (5 points: Part I – 1 point; Part II – 2 points; Part III – 1 point; Part IV – 1 point)
Part I: What is the periodic interest rate of Melanie's investment?

Part II: How many compounding periods does Melanie's investment offer in a year? How about in 8 years?

Part III: What expression can Melanie write to figure out how much her investment will be worth in 8 years?

Part IV: How much will Melanie's investment be worth in 8 years?

Answers

Answer:

Part I

4.8% compounded semiannually means 4.8%/2 = 2.4% per 6 month period

Part II

Period is 6 months, so 2 periods in a year and 2*8 = 16 periods in 8 years

Part III

A = $12200*(1 + 0.024)^16

Part IV

A = $12200*(1 + 0.024)^16 = $17830.32

HELP Use either law of sines or law of cosine. Need help on this problem! show work please!​

Answers

Answer: x = 15.035677095729 approximately

Round this however you need to.

=================================================

Explanation:

I'm assuming you want to find the value of x, which your diagram is showing to be the length of segment QR.

If so, then we'll need to find the measure of angle Q first. Using the law of sines, we get the following:

sin(Q)/q = sin(R)/r

sin(Q)/PR = sin(R)/PQ

sin(Q)/13 = sin(85)/19

sin(Q) = 13*sin(85)/19

sin(Q) = 0.6816068987

Q = arcsin(0.6816068987) ... or ... Q = 180-arcsin(0.6816068987)

Q = 42.9693397461 ... or ... Q = 137.0306602539

These values are approximate.

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

Now if Q = 42.9693397461 approximately, then angle P is

P = 180-Q-R

P = 180-42.9693397461-85

P = 52.0306602539

Similarly, if Q = 137.0306602539 approximately, then,

P = 180-Q-R

P = 180-137.0306602539-85

P = -42.0306602539

A negative angle is not possible, so we'll ignore Q = 137.0306602539

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

The only possible value of angle P is approximately P = 52.0306602539

Let's apply the law of sines again to find side p, aka segment QR

sin(P)/p = sin(R)/r

sin(P)/QR = sin(R)/PQ

sin(52.0306602539)/x = sin(85)/19

19*sin(52.0306602539) = x*sin(85)

19*sin(52.0306602539)/sin(85) = x

x = 15.035677095729

This value is approximate.

Round this value however you need to.

Using Cosine rule for solving this |QR| l got 22

There are 240 girls at the park. There are 360 more boys than girls at the park.How many boys are at the park?

Answers

Answer:

240+360=600

there are 600 boys at the park

Step-by-step explanation:

Answer:

Hello! Answer: Theres 600 boys at the park

Step-by-step explanation:

240 + 360 = 600

Hope this helps!

LT1 10th grade level

Answers

Answer:

SAS.

Here angle ABC = angle HGF ......( each 90° )

and other two corresponding sides are similar...

therefore, two sides and one Angle...

hence, SAS Test.

A submarine started 30 feet below the surface of the water. It is now 10 feet below the surface. What integer represents the change in depth?

Answers

Answer:

-20 feet

Step-by-step explanation:

change in depth = number of feet below the surface + number of depth on the surface

Because the submarine is below surface, a value of -30 would be given

-30 + 10 = -20 feet

An ice cream shop makes sundaes with chocolate or vanilla flavors and sprinkles,
fudge or caramel toppings. Which tree diagram shows all possible flavor combinations of sundaes with one flavor of ice cream and one topping?

Answers

Answer:

top left aka the first option

The tree that shows the correct combination of one flavor of ice cream and one topping is the the first tree.

What is tree diagram ?

A tree diagram is a tool in the fields of general mathematics, probability, and statistics that helps calculate the number of possible outcomes of an event or problem, and to cite those potential outcomes in an organized way.

Tree diagrams, also known as probability trees or decision trees, are quite versatile and may be useful in many fields, including finance.

A tree diagram lets a user start at a single point and make mutually exclusive decisions or experience mutually exclusive events to follow a path down the branches of the tree. Using a tree diagram is simple once you assign the appropriate values to each node.

From the question, and the definition it is clear that vanilla splits into fudge and caramel and chocolate to sprinkles.

Hence A is the correct option.

To know more about tree diagram here

https://brainly.com/question/13311154

#SPJ3

I don't understand how to solve this

Answers

Answer:

7 and 5 are congruent

Step-by-step explanation:

which pair of angles is congruent meaning which pair of angles is the same when looking at the angles given angles 5 and 7 are the same

If f(x) = 2x^2 - 4x - 3' and `g(x) = (x - 4)(x + 4)", find 'f(x) - g(x).

Answers

Answer:

B

Step-by-step explanation:

f(x) - g(x)

= 2x² - 4x - 3 - (x - 4)(x + 4) ← expand using FOIL

= 2x² - 4x - 3 - (x² - 16) ← distribute by - 1

= 2x² - 4x - 3 - x² + 16 ← collect like terms

= x² - 4x + 13 → B

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP


Answers

Answer:

D. the initial height of the paper airplane

Step-by-step explanation:

If the mass of the 5 coins is 25 grams, which measurement is closest to the total mass of the 2 pieces of candy?

Answers

If you mean the mass of 5 candies is 25 grams, or which measurement is closest to the mass of 2 coins than the mass of two coins/candies in 10 grams


5c=25g
25/5=5
2•5=10g

*Brainliest*
I need help with 4 problems like this...KHAN ACADEMY.

Answers

9514 1404 393

Answer:

(x +1)² = 4(D)  x = -1 ±2

Step-by-step explanation:

Start by getting the x-terms on one side of the equal sign. We can do that by subtracting x from both sides.

  3 = x² +2x

Now, add the square of half the x-coefficient.

  3 +1 = x² +2x +1

  (x +1)² = 4 . . . . . . . . write as a square in the desired form

__

To solve, take the square root, and add the opposite of the left-side constant.

  x +1 = ±2

  x = -1 ±2 . . . . . . matches choice (D)

Find the measure of angle ABD. Triangle ABD is an Isosceles Triangle.

Answers

Answer:

The answer to this question is 68

Answer:

m∡ABD = 68°

Step-by-step explanation:

let x = m∡ABD

44 + 2x = 180

2x = 136

x = 68

Which expression is equivalent to 4 + 2(1 + 3x)? A 24x
B 6 + 6x
C 4 + 8x
D 6+18x



no links please​

Answers

Answer:

The answer to this is option B

Code: (B+C) - (D+A)
Help me it’s a puzzle

Answers

Answer:

-A+B+C-D or B+C-D-A

Step-by-step explanation:

Simplify the expression

The diameter of a circle is 14 cm. Find its area in terms of \piπ.

Answers

153.86 cm²(Assuming pi equals 3.14)14 ÷ 2 = 77² = 4949 x 3.14 = 153.86OR49π14 ÷ 2 = 77² = 4949π

HELP PLS
will give brainliesy!​

Answers

Answer: 60 degrees

if angle dgc equals 90 (the little square means right angle which is 90 degrees) that means dga equals 90 too (because they are supplementary angles which equal 180 together)

90 - 30 = 60 (minus 30 bc 30 needs to be subtracted in order to find angle dge)

vertical angles are equivalent so x = 60

:)

Answer:

60

Step-by-step explanation:

because the unmarked angle is vertical pairs with the 90º, we know it is 90º

xº=180º-30º-90º

=90º-30º

=60º

Solve for X.

Then, Solve for Y.

Answers

Step-by-step explanation:

Refer to attachment.

Hope it helps :D

First solved for x, then for y [tex].[/tex]

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