2x + 5 = 13
what is x

Answers

Answer 1

Answer:

x = 4

Step-by-step explanation:

it's important to keep in mind that you can do anything to an equation as long as you do it to both sides, and it will still be equal.

2x + 5 = 13

subtract 5 from both sides of the equation

2x + 5 -5 = 13 - 5

2x = 13 -5

2x = 8

divide both sides of the equation by 2

2x/2 = 8/2

x = 4

Answer 2

The value of x for the equation 2x + 5 = 13 is x = 4.

Given that:

There is an equation in x which is given as,

2x + 5 = 13

It is required to find the value of x.

That is, solve the equation.

It is required to get the equation in such a way that x is on one side and a constant on the other side.

2x + 5 = 13

Subtract both sides by 5.

2x = 8

Divide both sides by 2.

x = 4

Hence the value of x is 4.

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Related Questions

Asap
Select the correct answer.
Which function has a restricted domain?

Answers

Step-by-step explanation:

Check second one

[tex]\\ \rm\Rrightarrow k(x)=(-x+3)^{\frac{1}{2}}[/tex]

1/2 means square root

[tex]\\ \rm\Rrightarrow \sqrt{(-x+3)}[/tex]

So

[tex]\\ \rm\Rrightarrow -x+3>0[/tex]

[tex]\\ \rm\Rrightarrow -x>-3[/tex]

[tex]\\ \rm\Rrightarrow x<3[/tex]

Hence.

Domain is restricted

Option B is correct

please help me!!

solve each of the equations below for the given variable

a.
[tex] \frac{ 2n - 1}{19} = \frac{m}{10} [/tex]
b.
[tex] \sqrt{x + 2 = 5} [/tex]

Answers

Step-by-step explanation:

b.

[tex]( \sqrt{x + 2} ) { }^{2} =( 5) { }^{2} \\ \\x + 2 = 25 \\ x = 25 - 2 \\ x = 23 [/tex]

HElPPPPPPPPPPPPP
Select the correct answer from each drop-down menu.
1st question (0, 0.35, 0.71 , -0.71)
2nd question (0, 0.65, -0.54, -1.22)

Answers

Answer: 1st question 0,71
2st question-1.22

Which of the following rational numbers is equal to 3 point 1 with bar over 1 ? (5 points) 22 over 9 , 24 over 9 , 26 over 9 , 28 over 9 a 22 over 9 b 24 over 9 c 26 over 9 d 28 over 9

Answers

Answer:

C

Step-by-step explanation:

Just got an A+ everything right

MATH HELP PLEASE 1 QUESTION

Answers

Answer:

C

Step-by-step explanation:

simplifying c gives us 5/8x + 2.5 = 5/8x + 1.5 , which then gives us

2.5=1.5 , which is impossible, so it must be c

Keisha's fish tank has 13 liters of water in it. She plans to add 4 liters per minute until the tank has at least 41 liters. What are the possible numbers of minutes Keisha could add water? Use t for the number of minutes. Write your answer as an inequality solved for t.

Answers

Answer:

7≥t

Step-by-step explanation:

The tank already has 13litres of water in it.

Keisha plans on increasing the quantity of the water to 41 litres. Hence,

41 litres - 13litres = 28litres

The above implies that she needed 28litres to be added to the fish tank.

She adds 4 litres per minute

Now, the question can now be reframed as how many minutes will be needed to add 28litre.

Considering to proportion method

4litres = 1 minute

28litres = t minutes

4litres × t minutes = 28litres

t = 28/4

t = 7 minutes

Hence, at least 7 minutes will be needed to increase the quantity of the tank water from 13litres to 41litres

But since we are to write the answer in an inequality form.

41≥ 13+4t

Solve for t

41≥13+4t

41-13≥4t

28≥4t

Divide both sides by 4

28/4≥4t/4

7≥t

How wide is each annual ring (springwood and summerwood combined)? Disregard the bark and pith in your calculations. Show your work. Write your answer in inches

Answers

The width of each ring in the redwood trees of coastal California is 0.06 inches.

How to estimate the width of a ring in a tree

According to the statement, we know that age of a tree and base diameter are directly proportional to the number of rings. The width of the ring is estimated by dividing the radius of the tree base by the age of the tree:

[tex]w = \frac{10\,ft \times 12\,\frac{in}{ft} }{2000}[/tex]

[tex]w = 0.06\,in[/tex]

The width of each ring in the redwood trees of coastal California is 0.06 inches. [tex]\blacksquare[/tex]

Remark

The statement in incomplete, correct form is shown below:

Each year of its life, a tree grows a new ring just under the outside bark. The new ring consists of two parts, light-colored springwood, when the tree grows the fastest, and a darker-colored summerwood, when growth slows. When conditions are good and there is lots of sun and rain, the new ring is thicker than the rings formed when there is drought or excessive cold. At the center of the tree is a dark circle called pith that is not connected to the age of the tree.

The redwood trees of coastal California are the tallest living things on earth. On redwood is 350 feet tall, 20 feet in diameter at its base, and around 2000 years old. Assume that the lower 50 feet of the tree form of the tree form a cylinder 20 feet in diameter and that all of the rings grew at the same rate.

How wide is each annual ring (springwood and summerwood combined)? Disregard the bark and pith in your calculations. Show your work. Write your answer in inches.

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can you please help me with this

Answers

Answer:

235 cm²

Step-by-step explanation:

Area can be split into top and bottom rectangles.

Area = 11 x (14 - 9) + 9 x 20

= 11 x 5 + 180

= 55 + 180

= 235 cm²

A cell phone plan charges a base fee of $65 and an overage charge of $30 per gigabyte of data that exceed 2 gigabytes. If C represents the cost and G represents the total amount of gigabytes of data. What equation could represents this plan when more than 2 gigabytes are used

Answers

Answer:C =$65 + $30G

Step-by-step explanation:

Given that :

Base fee charge = $65

Overage charge = $30 / per gigabyte for data that exceeds 2 gigabyte

C = cost ; G = total amount of gigabyte

Equation to represent plan; if more than 2 gigabyte are used :

Cost (C) = Base charge + (average charge * amount of gigabyte)

C = $65 + ($30 * G)

C =$65 + $30G

Find the difference between (7+a) and (-7a+1)

Answers

[tex]Answer:[/tex]

The first equation is simply just 7 + [tex]number[/tex]

The second equation, however, is saying -7 times [tex]number[/tex] plus 1

A negative number times a positive number is always a negative number. The negatives cancel out.

What is the inverse of the conditional statement?

If a polygon has five angles, then it is a pentagon.

If a polygon is a pentagon, then it has five angles.
If a polygon is not a pentagon, then it does not have five angles.
If a polygon does not have five angles, then it is not a pentagon.
If a polygon has five angles, then it is not a pentagon.

Answers

(A.) If a polygon is a pentagon, then it has five angles.

The inverse of the conditional statement "If a polygon has five angles, then it is a pentagon" is "If a polygon does not have five angles, then it is not a pentagon."

Option C is the correct answer.

What is a pentagon?

A pentagon is a polygon that has five sides and five angles.

The sides and angles of a pentagon are not all equal unless it is a regular pentagon.

A regular pentagon has five equal sides and five equal angles.

We have,

The inverse of a conditional statement is formed by negating both the hypothesis and the conclusion.

In this case, we negate the statement "a polygon has five angles" to "a polygon does not have five angles," and negate the statement "it is a pentagon" to "it is not a pentagon."

Thus,

The inverse of the conditional statement "If a polygon has five angles, then it is a pentagon" is "If a polygon does not have five angles, then it is not a pentagon."

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Find the Perimeter of the figure below, composed of a square and four semicircles. Rounded to the nearest tenths place​

Answers

Answer:

[tex]p = 37.6991118431[/tex]

Step-by-step explanation:

the perimeter of a half circle:

[tex]\pi r = \frac{d}{2} \pi = 3\pi = 9.4247779608[/tex]

there's the total of 4 half circle:

[tex]p = 9.42477796078 \times 4 =37.6991118431[/tex]

ConnectMe phone service charges Deva $29.95 per month for cellular data. Endless Data phone company is offering the same service for 20% less. How much will Deva save per month if she switches to Endless Data?

Answers

Answer:

5.99

Step-by-step explanation:

find the zero of y=8x^(2)+2x+4

Answers

Answer:

hello

8 x² + 2 x + 4 = 0

Δ = 4 -  4 ( 8 * 4 ) = 4 - 128

Δ < 0  =  no solutions

Step-by-step explanation:

Math homework someone help and how are you guys? :)

Find an equivalent ratio in simplest terms: 18:21 ?

Answers

Answer:

6/7

Step-by-step explanation:

Hi there !

18 : 21 = 18⁽³/21 = 6/7

Good luck !

Ariana charges $15 per ticket for a meet-and-greet plus $5 for parking. Due to a flu, she can only have at most 5 people attending. The total cost is a function of the number of people attending and is modelled by y = 15x + 5. What is a possible domain for this situation?

Answers

Answer and  explanation:

Possible domain of function includes from number one person attending to number 5 person attending

Find attached

What is the completely factored form of xy3 – x3y?
xy(y + x)(y – x)
xy(y – x)(y – x)
x y (x minus y) (x squared + x y + y squared)
x y (x minus y) (y squared + x y + x squared)

Answers

Answer:

[tex]xy(y+x)(y-x)[/tex]

Step-by-step explanation:

Given expression:

[tex]xy^3-x^3y[/tex]

Factor out the common term [tex]xy[/tex]:

[tex]\implies xy(y^2-x^2)[/tex]

Apply the Difference of Two Squares formula   [tex]a^2-b^2=(a+b)(a-b)[/tex]:

[tex]\implies xy(y+x)(y-x)[/tex]

Answer:

A

Step-by-step explanation:

A relation contains the points {(1, -4), (3, 2), (4, -3), (x, 7), (-4, 6)}.For which values of x will the relation be a function? Select ALL that apply.
A . -4
B. -3
C. 0
D. 3
E. 4

Answers

Answer:

th e answer is E. 4

Step-by-step explanation:

Suppose line B has the equation 3x + 6y = 12.
The line parallel to line B has a slope of

Answers

Convert to x in terms of y.

3x + 6y = 12

Divide by 3.

x + 3y = 4

Subtract x.

3y = -x + 4

Divide by 3.

y = (-1/3)x + 4

The slope is -1/3 here. A parallel line would have the same slope.

So the slope of the parallel line is -1/3

Hope this helps

Find the product (4x – 2y)^3

Answers

Answer:

(2)3 • (2x - y)3

Step-by-step explanation:

Put the exponent aside and simplify the base by pulling out like factors

4x-2y  =  2 • (2x-y)

Remember the 4th law of exponents : (a • b)m= am• bm

Retract the exponent and apply the 4th law to the simplified base: ( 2 • (2xy) )3 =  (2)3 • (2x-y)3  

A bookstore had 80 copies of a magazine. Yesterday, it sold 2/5 of them. Today, it sold 1/8 of what remained. How many copies does the bookstore have left?

Answers

Answer:

48 or 24

Step-by-step explanation:

Answer
(b)
Factorise 6ac - 4ad

help me with this pls :)) i really need help :)

Answers

6ac - 4ad
2a (3c - 2d)

Hey there!

In order to factorise an expression, we need to factor out the greatest common factor (divide all the terms in the expression by the greatest common factor):

6ac-4ad

In this case, the greatest common factor is 2a.

Put it outside the parentheses:

2(3c-2d)

That's the answer.

Hope everything is clear.

Let me know if you have any questions!

#LearningDoesn'tEnd

:-)

The author of the study claims that drivers who receive their licenses at 17
years of age are the least likely to commit a moving violation during the
first 8 months after receiving their license. Use the information in the table
to either support or refute the author's claim. Provide mathematical
justification for your answer.

Answers

Answer:

this is true I some cases but not all teens are the same

Step-by-step explanation:

Answer:

Refute/Disagree

Step-by-step explanation:


My answer(I did the test): I refute the authors claim. The chart clearly shows that at the end 16 year olds and 17 year olds are both at the same rate if likeness of committing a moving violation. The least likely to commit a moving violation during the first 8 months is the 16 year old and 6 month drivers. You can find a more accurate answer by adding up all the percentages for each age and then divide it by 8 (months), this number is the overall percentage for the 8 months.  

A juice and two sandwiches cost $70.00. A juice and four sandwiches cost $130.00. What is the cost of a sandwich?

Answers

Answer:

a sandwich = $30

Step-by-step explanation:

Reason why is because when it added 2 more sandwiches it added 70 with 30 2 times which equals 130.

A traffic sign casts a shadow 7m long at the same time a person 1.6m tall casts a shadow 4m long. Find the height of the sign.​

Answers

height of sign = x

length of sign shadow = 7m

For sign:-

[tex]tan \theta = \frac{p}{b} = \frac{height}{shadow} = \frac{x }{7} [/tex]

height of man = 1.6m

length of man shadow= 4m

For man :-

[tex] \tan\theta = \frac{p}{b} = \frac{height}{shadow} = \frac{1.6}{4} [/tex]

tanθ is same bez sun is at same level (angle) for both of them

So according to questions :-

[tex] \tan( \theta) = \frac{x}{7} = \frac{1.6}{4} \\ \frac{x}{7} = \frac{ \cancel{1.6}^{ \: \: 0.4} }{ \cancel4} \\ x = 7 \times 0.4 \\ x = 2.8m \: [/tex]

so we can say height of the sign = x = 2.8 m

Students at the college are allowed to work on campus no more than 20 hours per week. The jobs that are available pay different rates, starting from $8.75 an hour. Students can earn a maximum of $320 per week.

Write at least two inequalities that could represent the constraints in this situation. Be sure to specify what your variables represent.

Type your response in the space below.

Answers

Answer:

help me

Step-by-step explanation:

What is the area of the shaded region? 32 cm 32 cm 219.75cm * 804 24cm 1024cm #: 900cm ​

Answers

Answer:

if it is the circles it is 64

Step-by-step explanation:

if the shaded area is the circles than it is 64

Bill traveled 12.5 feet in 1 second and Kristie traveled 100 feet in 10 seconds. Who traveled faster?

Answers

Answer:Bill did

Step-by-step explanation:

12.5x10=125

Which of the following best describes the slope of
the line below?
A. Zero
B. Positive
C. Undefined
D. Negative

Answers

Answer:

Negative

Step-by-step explanation:

The slope is negative because as the x values increase, the y values decrease. If the line was going upward as the x values increase, it would be positive. If the line would be straight accross, it would be zero because the x values increase and the y values decrease.

Have an amazing day!!

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The slope is D. Negative

Write 2016 in standard form.​

Answers

Answer:

2.016 x 10^3

Standard form must have a single digit number x10 to the power of a number.

Here, we had to move the decimal point three times to the left, therefore it will be a power of positive three for the 10.

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