is 3 a solution of 5x - 3= 12? justify your answer ​

Answers

Answer 1

Answer:

x = 3

Step-by-step explanation:

Given

5x - 3 = 12 ( add 3 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

As a check

Substitute x = 3 into the left side of the equation and if equal to the right side then it is a solution.

5(3) - 3 = 15 - 3 = 12 = right side

Thus x = 3 is the solution


Related Questions

What is the best first step for solving the equation 5 = 3x - 4? a. Add 4 to both sides of the equation. b. Subtract 4 from both sides of the equation. c. Multiply both sides of the equation by 3 d. Divide both sides of the equation by 3.​

Answers

Answer:

A. Add 4 to both sides of the equation.

Step-by-step explanation:

Isolate your variable by using inverse operations.

fully simplify only sing positive exponents:

3xy^2/9x^8y^6

Answers

Answer:

Step-by-step explanation:

3/9 = 1/3

xy^2/x^8y^6 = 1/x^(8-1)y^(6-2) = 1/x^7y^4

therefore, 1/3x^7y^4

What is 3.000 in standard notation?

Answers

Answer:

3 x 10(to the 3rd power)

Step-by-step explanation:

Can v11 be classified as a rational

Answers

Answer:

yes it should

Step-by-step explanation:

Yes it should be classified as a rational

Complete the statement. The drawing is not to scale. If mangle upper D upper G upper F = 84°, then mangle upper D upper E upper F = ___. Two adjacent triangles are shown.

Answers

Answer:

The answer is 84° because they are the same thing just on opposite sides therefore they would be the same thing.

Find the value of the expression -1/3-(-5/12).

Answers

Answer:

1/12

Step-by-step explanation:


[tex]x = 8[/tex]I need help solving this.

Answers

Answer:

2

Step-by-step explanation:

x³ = 8

∛8 = 2

found by 2 • 2 • 2 = 4 • 2 = 8

16) Evaluate the expression with its given values.

hi idk if it’s right but could anyone help at least if so ty

Answers

The answer is one because you plug in the numbers it’s 3 x 4/ 12 = 12/12 which is 1

Given the function f(x)=2x-7. What is x when f(x)=17?

Answers

Answer:

x = 12

Step-by-step explanation:

Step 1: Define

f(x) = 2x - 7

f(x) = 17

Step 2: Substitute

17 = 2x - 7

Step 3: Solve for x

Add 7 on both sides: 24 = 2x

Divide both sides by 2: 12 = x

Step 4: Check

f(12) = 2(12) - 7

f(12) = 24 - 7

f(12) = 17

Answer:

f(17)=2(17)-7

=34-7

=27

What is the answer for 4x+3=36

Answers

[tex]4x + 3 = 36\\4x = 36 - 3\\4x = 33\\x = \frac{33}{4}[/tex]

an aquarium tanks holds 95 liters of water.how much is this in gallons ?use the following conversion: 1 gallon is 3.8 liters

Answers

25 gallons. you divide 95 liters by 3.8 liters to convert to gallons

Answer:

25 gallons

Step-by-step explanation:


0.5x -2 = 1.5x + 0.15

Answers

Answer: x=−2.15

Step-by-step explanation : Alright Let's solve your equation step-by-step.

0.5x−2=1.5x+0.15

Step 1: Subtract 1.5x from both sides.

0.5x−2−1.5x=1.5x+0.15−1.5x

−x−2=0.15

Step 2: Add 2 to both sides.

−x−2+2=0.15+2

−x=2.15

Step 3: Divide both sides by -1.

−x

−1

=

2.15

−1

x=−2.15        hope this helped!- Alex

find the value of x ​

Answers

Answer:

x = 68°

Step-by-step explanation:

∠ DCB = ∠ EDC = 27° ( alternate angles )

Thus ∠  ECB = 23° + 27° = 50°

The sum of the 3 angles in a triangle = 180°, thus

x = 180° - (62 + 50)° = 180° - 112° = 68°

Answer:

68°

Step-by-step explanation:

DE ║ BC

So, ∠DBC = ∠ADE = 62° (∵ Corresponding Angles are equal )

In triangle DEC ,

∠EDC+ ∠ECD = ∠AED (∵ Exterior Angle Sum Property of a triangle )

⇒ ∠AED = 23° + 27° = 50°

Now in triangle AED ,

∠EAD + ∠ADE + ∠AED = 180°

⇒ x° + 62° + 50° = 180°

⇒x° = 180° - 112° = 68°

Options are A. 17 B. 50 C. 19 D.21

Answers

Answer:

C. [tex]19[/tex]

Step-by-step explanation:

BD = DC because angles ADC and ADB are right angles.

Thus, [tex]4x-5=2x+7[/tex]

Add 5 to both sides:

[tex]4x-5+5=2x+7+5[/tex]

[tex]4x=2x+12[/tex]

Subtract 2x from both sides:

[tex]4x-2x=2x+12-2x[/tex]

[tex]2x=12[/tex]

Divide both sides by 2:

[tex]\frac{2x}{2}=\frac{12}{2}[/tex]

[tex]x=6[/tex]

DC [tex]=4x-5[/tex]

[tex]=4(6)-5[/tex]

[tex]=24-5[/tex]

[tex]=19[/tex]

18= 5m + 3 .. what would b m?

Answers

Answer:

m=3

Step-by-step explanation:

Move all terms that don't contain  m  to the right side and solve.

Answer:

m=3

Step-by-step explanation:

Simplifying

18 = 5m + 3

Reorder the terms:

18 = 3 + 5m

Solving

18 = 3 + 5m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-5m' to each side of the equation.

18 + -5m = 3 + 5m + -5m

Combine like terms: 5m + -5m = 0

18 + -5m = 3 + 0

18 + -5m = 3

Add '-18' to each side of the equation.

18 + -18 + -5m = 3 + -18

Combine like terms: 18 + -18 = 0

0 + -5m = 3 + -18

-5m = 3 + -18

Combine like terms: 3 + -18 = -15

-5m = -15

Divide each side by '-5'.

m = 3

Simplifying

m = 3

hope this helps

Simplify 24 - 15 - 3+ 2.6.
O A. 30
O B. 31
O C. 126
O D. 15

Answers

Answer:

D

Step-by-step explanation:

1. Evaluate the function below for the given input value.
f(x) = 4x – 6 for f (2)
Your answer

Answers

Answer:

[tex]f(2) = 4(2) - 6[/tex]

[tex]f(2) = 8 - 6[/tex]

[tex]f(2) = 2[/tex]

Hope it helpz

Putting x = 2 in f(x)

f(2) = 2.

What Is a function ?

A function is an mathematical expression where we have an independent variable and a dependent variable.The value of the independent variable determines the value of the independent variable.There are many types of functions like alzebraic functions, trigonometric functions, exponential functions etc.

In the given question

f(x) = 4x - 6

when, x = 2.

f(2) = (4×2) - 6

f(2) = 8 - 2

f(2) = 2.

Learn more about Functions here :

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Find the slope and the y-intercept of the line y=9x-8

Answers

Answer:

the slope is 9 and the y-int. is -8

Step-by-step explanation:

Answer:Y = -8

Slope is 9

Step-by-step explanation:

Y=9 x 0 - 8

-9x = -8

X =8/9

factorise 9(a+b)^2 + (a+b) -8 ​

Answers

Answer:

[tex](9a+9b-8)(a+b+1)[/tex]

Step-by-step explanation:

[tex]9(a+b)^2 + (a+b)-8[/tex]

Expand [tex](a+b)^2[/tex]

[tex]9(a^2+2ab+b^2)+a+b-8[/tex]

[tex]9a^2+18ab+9b^2+a+b-8[/tex]

Now it is time to think.

Once

[tex]9a^2=9a \cdot a[/tex]

[tex]9b^2=9b \cdot b[/tex]

[tex]18ab=9ab+9ab[/tex]

[tex]-8=-8 \cdot 1[/tex]

We can get something in the format

[tex](9a+9b-8)(\text{some expression here})[/tex]

From the conclusions above,

[tex](9a+9b-8)(a+b+1)[/tex]

A movie club charges a one-time fee membership fee of $25. This allows members to purchase movies for $7 each. Lincoln is a member of the movie club and has spent a total of $60. How many movies has Lincoln purchased

Answers

Answer:

he purchased 5 movies bro

Step-by-step explanation:

Find the slope of the line that passes through the points (2, -5) and (7, 1) Step 1: Choose (x1, y1) X1= ___ y1=___

Answers

Answer:

slope: 6/5

Step-by-step explanation:

you do y2-y1 divided by x2-x1 so it will be 1-(-5) / 7-2 which is equal to 6/5

so a son and dad went on a fishing trip and the got in to a car accident the dad died and the son needed surgery and the doctor said no why though​

Answers

Answer:

if the condition of the son is very critical

a surgeon will say NO

Because after a successful operation, the son will become like a vegetable

and there's no point of doing so.

It's a torture to the son for the rest of his life.

Solve the linear equation: 3(4 + 2b) - b = 27 A b = 15 B b = 5 C b = 3 D b = -3

Answers

Answer:

Multiply the numbers in parentheses by 3.

Which gives you 12 + 6b - b =27

Combine like terms

12 + 5b = 27

Then subtract 12 from both sides

Which leaves you with

5b = 15

Divide both side by 5

which gives you

answer C

If EF=6 and EG=23 find the value of FG

Answers

Answer:

FG = 17

Step-by-step explanation:

EF=6 and EG=23

find the value of FG

     

       6

E-------------F-----------------------------------G

|<-----------------------23---------------------->|

EF + FG = 23

6 + FG = 23

FG = 23 - 6

FG = 17

25
Highest Temp(°F)
What is the
difference
in the low
and high
temp?
0
Lowest Temp °F)
-25

Answers

Answer:

there both the same number its just that one is on top and the other is on bottom

At the beginning of the week, Joshua had $356 in his savings account. At the
end of the week he only had $123 in his savings account. Write and solve an
equation to find the amount of money that Joshua spent during the week.

Answers

$356 - $123 = $233, joshua spent $233

equation: 356 - x = 123

The x can be changeable

the actual answer:

356 - 356 - x = 123 - 356

-1x/-1 = -233/-1

x =233

On April 1, the company hired an attorney for a flat monthly fee of $3,5000. Payment for April legal services was made by the company on May 12.

Answers

Answer:

Question continuation

"2. A $480,000 note payable requires 9.1% annual interest, or $3,640, to be paid at the 20th day of each month. The interest was last paid on April 20 and the next payment is due on May 20. As of April 30, $1,213 of interest expense has accrued.  

3. Total weekly salaries expense for all employees is $9,000. This amount is paid at the end of the day on Friday of each five-day workweek. April 30 falls on a Tuesday, which means that the employees had worked two days since the last payday. The next payday is May 3.  The above three separate situations require adjusting journal entries to prepare financial statements as of April 30. For each situation, present both the April 30 adjusting entry and the subsequent entry during May to record the payment of the accrued expenses. (Use 360 days a year. Do not round intermediate calculations.)"

Solution:

No  Type          Date       Account                 Debit       Credit  

1   Adjusting  Apr 30       Legal Expenses    $3,500  

                                       Accounts Payable                   $3,500  

                                      (To record legal expenses)

 Subsequent May 12     Accounts Payable  $3,500

                                        Cash                                         $3,500

                                        (To record payment in May)

2  Adjusting   Apr 30      Interest Expense     $1,213

                                        Interest Payable                        $1,213

                                        (To record interest expense accrued)

Subsequent May 20      Interest Expense       $2,427  

                                       ($3,640-$1,213)

                                        Interest Payable        $1,213

                                        Cash                                          $3,640

                                        (To record payment in May)

3  Adjusting   Apr 30      Salaries Expense        $3,600

                                        Salaries Payable                         $3,600

                                         ($9,000/5*2)

                                        (To record salaries expense accrued)  

  Subsequent  May 3      Salaries Expense         $5,400  

                                         ($9,000/5*3)  

                                         Salaries Payable          $3,600  

                                         Cash                                             $9,000

                                          (To record payment in May)

Classify the following triangle. Check all that apply.

Answers

Answer:

Acute and Straight

Step-by-step explanation:

The boiling point of three components A, B and C of petroleum are 120○C, 70○C, 250○C respectively. If a mixture of these three is fractionally distilled, which of these will be obtained at the bottom of the distillation column?

Answers

Answer:

Mustaali Chill Bro

Component C, with a boiling point of 250°C, will be obtained at the bottom of the distillation column.

The component with the highest boiling point will be obtained at the bottom of the distillation column.

In this case, component C has the highest boiling point at 250°C, followed by component A at 120°C, and component B at 70°C. Therefore, during fractional distillation, component C will be obtained at the bottom of the distillation column.

To know more about distillation, refer here:

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❗️URGERNT❗️
I will give brainliest if your response comes with an explanation.

During a heavy rainstorm, a city in Florida received
12 1/4 inches of rain in 25 1/2 hours. What is the approximate rainfall rate in inches per hour?

Answers

Answer: 0.48 in

Step-by-step explanation:

The problem asks for unit rate. To solve, let's convert the fractions to decimals.

[tex]12\frac{1}{4} =\frac{49}{4} =12.25[/tex]

[tex]25\frac{1}{2}=\frac{51}{2}=25.5[/tex]

Now that they are in decimals, we can set up a proportion.

[tex]\frac{12.25 in}{25.5 hrs} =\frac{x}{1 hr}[/tex]           [cross multiply]

[tex]12.25=25.5x[/tex]         [divide both sides by 25.5]

[tex]x=0.48[/tex]

Now, we know that there was approximately 0.48 in of rainfall per hour.

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