Given the function below, find value (a) of x if f(x)=7

Answers

Answer 1

The function f(x) = 2x + 1 has its value of x to be 3 when f(x) = 7

How to determine the value of the function?

From the possible question, the definition of the function is given as

f(x) = 2x + 1

Also, from the question, we have:

f(x) = 7

Substitute 7 for x in the equation f(x) = 2x + 1

So, we have the following representation

2x + 1 = 7

Subtract 1 from both sides of the equation

This gives

2x = 6

Divide both sides by 2

x = 3

So, we can conclude that the value of x is 3

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Possible question

Given the function below, find the value of x if f(x)=7

f(x) = 2x + 1


Related Questions

Complete the equation so that it has no solution.
-15x + 4x + 2-x=__x+3

Answers

Equation -15x + 4x + 2-x= -12x+3 has no solution.

Define equation.

A mathematical expression with an equals sign is referred to as an equation. Algebra is widely used in equations. When performing calculations but unsure of the precise amount, algebra is used. In algebra, an equation is a declaration of equivalence that includes one or more variables or unknowable quantities. The x + 4 = 12 equation states that the left and right sides of the equation are equal. A assertion that "this equals that" is what constitutes an equation.

Given,

Equation:

-15x + 4x + 2 - x = _x +3

For no solution, value of x on both sides should be equal,

So,

-15x + 4x - x

-12x

Value of x will be -12.

Equation -15x + 4x + 2-x= -12x+3 has no solution.

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find the general terms of the sequence 4 8 12 16

Answers

Answer: The general term is an = 4n

Step-by-step explanation:

Please help me with this!!!

Answers

The Probability of an odd number = 0.5.

What is Probability?

One of the areas of probability theory is the estimation of the chance of experiments occurring. Using probability, we can calculate everything from the possibility of getting heads or tails when flipping a coin to the likelihood of making a research error, for example. The formula for computing probabilities in equiprobable sample spaces, the probability of the complementary event, etc., as well as the likelihood of two occurrences coming together, are essential to understand in order to properly appreciate this field of mathematics.

In the given question, we have:

The odd numbers on the given spin are 1,3,5,7 and 9;

So, The number of odd numbers is 6;

That is, n(odd) = 6;

and,

Total number of Spin = 12;

So, The probability of an odd number = [tex]\frac{odd number}{total number}[/tex]

The probability of an odd number = [tex]\frac{6}{12}[/tex]

Hence, The Probability of an odd number = 0.5.

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2(1 + 2k)
Simplify the expression... HELP

Answers

Answer:

2+4K

Step-by-step explanation:

distribute the 2

2(1+2k)

2(1)+2(2k)

2+4K

Hopes this helps please mark brainliest

2 + 4k
Hope this helps :)

HELP ME PLEASEEEEEEE

Answers

Answer:

[tex]{ \boxed{ \tt{ \sin( \theta) = \frac{opposite}{hypotenuse} }}}[/tex]

- \theta = 25°

- opposite = x

- hypotenuse = z

[tex]{ \tt{ \sin(25 \degree) = \frac{x}{z} }} \\ [/tex]

Answer: x/z

Step-by-step explanation:

sin25 uses soh from sohcahtoa

sin25 = opposite/hypotenuse = x/z

if a seed is planted, it has a 95% chance of growing into a healthy plant. if 9 seeds are planted, what is the probability that exactly 3 don't grow?

Answers

If 9 seeds are planted, what is the probability that exactly 3 don't grow will be 1/5832000 as 5% chance are there that plant will not grow.

What is probability?

The area of mathematics known as probability studies potential outcomes of events as well as their relative probabilities and distributions. Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of various outcomes. Statistics is the study of events that follow a probability distribution.

Here,

The chances of seed to be not growing is 1–0.95 =0.05.

For 3 seeds not to grow being simultaneous occurring events have the probability = 0.05×0.05x0.05=0.000125

As 9 seeds being planted the probability of selecting 1 out of 9 is (1/9).

So for 3 mutual occurring case is (1/9)×(1/9)x(1/9)= 1/729

So the probability will be (1/729)×1/8000=1/58,32,000

The likelihood that exactly 3 seeds out of 9 will not germinate is 1/5832000, or 5%, so there is a chance that the plant won't grow.

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Two cars start at the same point and simultaneously drive in opposite directions.
The speed of the first car is s miles per hour. The speed of the second car is 5
miles per hour less than the speed of the first car.
The cars are 315 miles apart 1.5 hours after they start moving. Use the answer
from part (c) to write an equation.

Answers

I don’t really know dawg

Mason is a songwriter who collects royalties on his songs whenever they are played in a commercial or a movie. Mason will earn $30 every time one of his songs is played in a commercial and he will earn $80 every time one of his songs is played in a movie. Mason earned a total of $470 in royalties on 9 commercials and movies. Write a system of equations that could be used to determine the number of commercials and the number of movies on which Mason's songs were played. Define the variables that you use to write the system.

Answers

Answer:

Get the roundend answer to 10

Step-by-step explanation:

One type of plant root splits 4 times while growing in the ground. The number of new roots after each split can be modeled by the function f(x)=3x, where x is the number of times the root splits. What is the domain of f(x)? CLEAR CHECK All positive integers All positive integers less than or equal to 4 All integers All positive integers greater than or equal to 4

Answers

The domain of the function represented as .f(x) is (b) All positive integers less than or equal to 4

How to determine the representation of the domain?

The equation of the function is given as

f(x) = 3x

Where

x = Number of splits

f(x) = number of new roots in each split

From the question, we have

Splits = 4

This means that the maximum value of x is 4

The other values of x would be

x = 1, 2, 3, 4

This can be represented as

0 ≤ x ≤ 4

The interpretation of the above notation is all positive values less than or equal to 4

Hence, the domain value is option (b)

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To rent a certain meeting room, a college charges a reservation fee of $49 and an additional fee of $5.80 per hour. The math club wants to spend less than $72.20 on renting the meeting room. What are the possible amounts of time for which they could rent the meeting room? Use t for the number of hours the meeting room is rented, and solve your inequality for .

Answers

The possible amount of time for which they could rent the meeting room is 1, 2, and 3 hours.

In the question,

It is given that,

Reservation fee is $49.

Additional fee is $5.80 per hour.

The math club can spend maximum of $72.20.

The inequality will be:

49 + 5.8*t < 72.20

5.8*t < 23.2

t < 4

Hence, the possible amount of time for which they could rent the meeting room is 1, 2, and 3 hrs.

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What does the y-intercept represent in the context of the problem?
the total cost at 8 visits
Total cost at 12 visits
the number of visits at $0 total cost
the total cost at 0 visits

PLEASE HELP!!!!

Answers

Answer:

D

Step-by-step explanation:

The equation of the line is y = 2x + 8

To find the y intercept we make x=0

When x=0 y=8

if y is total cost and x is number of visits then at zero visits (x=0) the total cost is 8, which is what you would find using choice D

Answer:

D) the total cost at 0 visits

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

The y-intercept is (0, 8)The x-coordinate, number of visits ⇒ x = 0, zero visits,The y-coordinate, total cost            ⇒ y = 8,  total cost is $8.

It represents the cost with zero visits, likely the membership cost, therefore the correct choice is D.

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help meeeeeeeeeeeeeeeeeee pleaseeee rn rnnnnnnnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

The equation of the parabola is f(x) = 7(x-3)^2+5.

Given:

The equation of the parabola that has the same shape has f(x) = 7x^2 but with vertex(3,5) in the form of f(x) = a(x-h)^2 + k.

If the parabola has same shape then its a values are same.

so f(x) = 7x^2

here a = 7

so the equation with vertex (3,5) also has a value is 7.

(h,k) = (3,5)

f(x) = a(x-h)^2+k

= 7(x-3)^2 + 5.

Therefore the equation of the parabola is f(x) = 7(x-3)^2+5.

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Dakota found a vintage skateboard from the 1980s in her parents' garage. The owner of the local skate shop told her the skateboard is currently worth $380 and will increase in value by about 7% each year. Write an exponential equation in the form y=a(b)x that can model the skateboard's value, y, in x years. Use whole numbers, decimals, or simplified fractions for the values of a and b. y = To the nearest dollar, how much will the skateboard be worth in 7 years?

Answers

1. An exponential equation modeling the skateboard's value, y, in x years is y = 380 x 1.07ˣ.

2. The value of the skateboard will be worth $610.28 in seven years.

What is an exponential equation?

An exponential equation is a mathematical function that depicts an equation with variable exponents.

The exponential function is always written in the form of y = abˣ.

Where a = the constant or initial value, b = the continuous growth rate, and x  or t = the time variable.

Y represents the value that we are looking for after the growth rate has been applied for several (t) years.

The current worth of the skateboard = $380

Annual increase = 7% = 0.07

Number of years = 7 years

Y = 380 x 1.07⁷

= 380 x 1.606

= 610.28

= $610.28

Thus, in seven years, using the exponential equation, the skateboard will be worth $610.28.

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Alfred begins collecting model cars. He buys 3 new model cars every week. Is the number of cars he owns proportional to the number of weeks that have passed since he started his collection?

Answers

Answer:yes

Step-by-step explanation:

for every week he gets 3 cars so it can only incre ment by 3. (1,3) (2,6) (3,9) and so on.

Work out the length of x if one of the lengths is 9.7cm.Give your answer rounded to 3 significant figures.

Tysm if u can work this out correctly.

Answers

Considering the figure of a right angle triangle, the given length is the hypotenuse,. The unknown side x is calculated to be 6.86 cm

How to find x

information given in the question

hypotenuse = 9.7 cm

opposite = x

adjacent =  x

The problem is solved using the Pythagoras theorem is applicable to right angle triangle.  the formula of the theorem is

hypotenuse² = opposite² + adjacent²

opposite = adjacent

plugging the values as in the problem

let x be the required distance

9.7² = x² + x²

94.09 = 2x²

47.045 = x²

x² = 47.045

x = √47.045

x = 6.8589

x = 6.86 to 3 significant figures

side x is 6.86 cm

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Dan spends
34
of his wages on rent and
18 on food. If he makes £240 per week, how much money does he have left?

Answers

Dan has money left is £30.

Given:

Dan spends 3/4 of his wages on rent and 1/8 on food.

If he makes £240 per week.

Money left =  240 - 240* 3/4 - 240 * 1/8

= 240 - 60*3 - 240/8

= 240 - 180 - 30

= 60 - 30

= 30.

Therefore Dan has money left is £30.

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Help Im begging Brainliest Help!!!!!!

A 3−4−5 right triangle is the base of a prism that is 10 inches tall. How many cubic inches of sand could fill the solid?

Answers

Answer:

60 [tex]in^{2}[/tex]

Step-by-step explanation:

Volume = the area of the base times the height.

Base:

[tex]\frac{lengthxwidth}{2}[/tex]

[tex]\frac{3x4}{2}[/tex]

6  multiply this by the height of 10

Volume = 60 [tex]in^{3}[/tex]

Answer:

60 cubic inches of sand

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

The volume of the prismV = Bh, B- area of base, h- height

Area of baseB = 1/2×3×4 = 6 in²

Find the volumeV = 6×10 = 60 in³

What are the roots of this polynomial? f(x) = (x+9)(x-9)(x+10)?

Answers

The solution for the given polynomial are x = -9, 9 and -10.

What is polynomial?

Polynomials are algebraic expressions that contain coefficients and variables. Variables are sometimes known as indeterminates. Mathematical operations like addition, subtraction, multiplication, and positive integer exponents can be performed on polynomial equations but division by variables cannot.

Given polynomial:

(x+9)(x-9)(x+10)

Equating it wit zero,

we get solutions as:

x = -9, 9, -10

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(2x-5)(x+2) write the area as a product and a sum

Answers

Answer:

2x^2 -x -10 is the answer as a product

3x-3 as a sum

Step-by-step explanation:

Assuming (2x-5)(x+2)=0

Let's distribute.

(2x^2+4x)(-5x-10)=0

Then combine like terms

2x^2 -x -10 is the answer as a product

3x-3 as a sum

Jane received a $70 gift card for a coffee store. She used it in buying some coffee that cost $8.39 per pound. After buying the coffee, she had $28.05 left on her card. How many pounds of coffee did she buy?​

Answers

Answer:

85 ggoooofffffyyy

Step-by-step explanation:

a journalist for an automotive magazine wants to determine how the weight of a passenger vehicle, in kilograms, is related to its length, in centimeters; the maximum number of passengers; and its safety rating on a 5-point scale. what is the correct format for a multiple regression equation?

Answers

the correct format for a multiple regression equation is

ŷ= [tex]b_{o} + b_{1}x_{1} + b_{2}x_{2} + b_{3}x_{3} + b_{4}x_{4}[/tex]

multiple regression: The relationship between a single dependent or criterion variable and multiple independent or predictor variables is typically explained by multiple regression. The constant term and multiple independent variables with their corresponding coefficients are used to model a dependent variable. The term "multiple regression" refers to the fact that it requires two or more predictor variables.

because, the weight of a passenger vehicle, in kilograms, is related to its length, in centimeters; and the maximum number of passengers.

thus, ŷ=[tex]b_{o} + b_{1}x_{1} + b_{2}x_{2} + b_{3}x_{3} + b_{4}x_{4}[/tex] is the multiple regression equation.

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Is x + 1/y = 7 a linear equation?
[tex]x + \frac{1}{y} = 7[/tex]

Answers

The equation ; x + 1/y = 7 as given in the task content is a linear equation.

What are linear equations?

It follows from the task content that the equation given in the task content is to be identified as linear or not.

Since the given equation is; x + 1/y = 7;

It is noteworthy to know that a linear equation is one in which case, the greatest exponent of the variable is; 1.

Therefore, since the greatest exponent of a variable in the given equation is 1; it follows that the equation is a linear equation.

Hence, the equation given in the task content; x + 1/y = 7 is a linear equation.

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Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term.

–4, –3, –2, –1, ...

Answers

Answer:

[tex]a_{n}[/tex] = n - 5

Step-by-step explanation:

there is a common difference between consecutive terms in the sequence, that is

- 3 - (- 4) = - 2 - (- 3) = - 1 - (- 2) = 1

this indicates the sequence is arithmetic with nth term

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = - 4 and d = 1 , then

[tex]a_{n}[/tex] = - 4 + 1 (n - 1) = - 4 + n - 1 = n - 5

Write a system of equations to describe the situation below, solve using any method, and fill
in the blanks.
Sidney wants to take group fitness classes at a nearby gym, but needs to start by selecting a
membership plan. With the first membership plan, Sidney can pay $36 per month, plus $2 for
each group class she attends. Alternately, she can get the second membership plan and pay
$35 per month plus $3 per class. If Sidney attends a certain number of classes in a month,
the two membership plans end up costing the same total amount. How many classes per
month is that? What is that total amount?
If Sidney attends
Submit
classes per month, each membership plan costs $

Answers

The system of equation to describe the situation below is x= 1.

What is equation?

an equation is a formula that is to expresses the equality of two expressions, by the  connecting them with in the equals sign.

The process of equting one thing with another is called the equation of science with objective.

Sol- Based on the given condition-

The formulate is- 36+2x=35+3x

Rearrange variables to the left side of the equation

2x-3x=35-36

Combine like terms

-x= 35-36

Calculate the sum or difference

-x=-1

Devide both side of the equation by the coefficient of variable we get

X=1

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The Jackson family just bought 15-packs of Lacroix at Costco. On average, their family drinks about eight cans a week after how many weeks will there be only five cans left? Show how you figured it out.

Answers

If the Jackson family just bought 15 pack of Lacroix at Costco and the family drinks about eight cans a week, then after 1.25 weeks

Total number of packs they bought = 15 pack

The average cans they finish each week = 8

Number of cans left = 5 cans

Number of cans used = Total number of packs they bought - Number of cans left =

= 15 - 5

= 10 cans

After how many weeks will there be only five cans left = Number of cans used ÷ The average cans they finish each week

Here we have to use the division

Substitute the values in the equation

After how many weeks will there be only five cans left = 10 /8

= 1.25 weeks

Hence, if the Jackson family just bought 15 pack of Lacroix at Costco and the family drinks about eight cans a week, then after 1.25 weeks

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Decide whether each equation is true for all, one, or no values of x.

Answers

1. 3x + 9 = -4.5x + 20 ; This is true for one value of x.

2. 9(x + 3) = 9x + 12 ; This is true for no values of x.

3. 4(2x + 3) = 12 + 8x ; True for any values of x.

Given,

The equations;

1. 3x + 9 = -4.5x + 20

2. 9(x + 3) = 9x + 12

3. 4(2x + 3) = 12 + 8x

We have to find whether each equation is true for all, one or no values of x.

Here,

1. 3x + 9 = -4.5x + 20

Solve for x;

3x + 4.5x = 20 - 9

7.5x = 11

x = 11/7.5

x = 1.47

Then,

This is true for one value of x.

2. 9(x + 3) = 9x + 12

Solve using distributive property;

9x + 27 = 9x + 12

9x - 9x = 12 - 27

0 = -15

This is true for no values of x.

3. 4(2x + 3) = 12 + 8x

Use distributive property and solve;

8x + 12 = 12 + 8x

8x - 8x = 12 - 12

0 = 0

True for any values of x.

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al would take six hours to paint a wall working alone, while bob would take four hours to paint it, and chuck would take three hours to paint it. al starts painting at noon. at 1:00 pm, bob joins him. chuck joins them at 1:30 pm. at what time do they finish painting the wall?

Answers

At 2:20 pm they finish the paint of wall.

Given, Al took 6 hours to paint a wall.

Bob took 4 hours and Chuck took 3 hours for same.

Let the work of painting wall is = LCM(6,4,3) = 12 Units

So in 1 hour Al works = 12/6 = 2 units

In 1 hour Bob works = 12/4 = 3 units

In 1 hour Chuck works = 12/3 = 4 units

In 1 hour, Al and Bob together do = 2+3 = 5 units

In 1 hour, all three together do = 2+3+4 = 9 units

Now from noon i.e. 12 to 1.00 pm Al works alone.

So 2 units of work is done.

From 1 pm to 1.30 pm, Al and Bob work together.

In 30 minutes i.e. ½ hour Al and Bob did = (1/2)*5 = 5/2 units

From 1.30 pm they all three work together.

Now the remaining work is = 12-(2+5/2) = 12-9/2 = 15/2 units

So they complete rest in = (15/2)/9 = 5/6 hours = 50 minutes

Hence the time of finishing the work = 1.30 + 50 minutes = 2.20 pm.

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which one would be the correct answer?

Answers

3x²-2x+5 is the other factor of the above polynomial (6x³-x²+8x+5) other than (2x+1).

Describe a polynomial.

In mathematics, a polynomial is an equation made up of coefficients and indeterminates, also referred to as variables. Only addition, subtraction, multiplication, and powers of positive-integer variables may be utilized to solve it. An example of a polynomial with one uncertain x is x² + 4x + 7.

Polynomials are commonly used in calculations in both mathematics and science. For instance, in the fundamental sciences of chemistry, physics, economics, and social science, they are used to define polynomial functions. They are also used in numerical analysis and calculus to approximate other functions. Simple word problems to complex scientific conundrums are all represented by polynomial equations. Polynomials are used in advanced mathematics.

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Two parallel lines are cut by a transversal as shown below.
Suppose m4=124°.

Answers

Answer:

156°

Step-by-step explanation:

m5 = m7 (vertical angles)
m4 + m5 = 180 (supplementary)
m5 = 180 - 124 = 156

So measure of both angle 5 and 7 is 156

If RS = 7, ST = 3x, and RT = x + 9, what is RT?

Answers

The required value of RT is 10 units when RS = 7, ST = 3x, and RT = x + 9.

What is a Line Segment?

A line segment is defined as a measured path between two places. Line segments can make up any polygon's sides because they have a set length.

The figure given below shows a line segment RT, where the length of line segment RT refers to the distance between its endpoints, R and T.

RS = 7, ST = 3x, and RT = x + 9

R______________S______________T

⇒ RT = RS + ST ....(i)

Substitute the values of RS = 7, ST = 3x, and RT = x + 9,

⇒ x + 9 = 7 + 3x

⇒ 3x - x = 9 - 7

⇒ 2x = 2

⇒ x = 1

Substitute the values of x = 1 in RT = x + 9

So RT = 1 + 9 = 10

Hence, the value of RT is 10 units.

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