What is the value of x?

Answer:

the inverse of f(x)=2x−7 f ( x ) = 2 x - 7 .

Step-by-step explanation:

check if f−1(f(x))=x f - 1 ( f ( x ) ) = x and f(f−1(x))=x f ( f - 1 ( x ) )

Answer:

f(x) = 1/4 x² - 7

Step-by-step explanation:

x + 7 ≥ 0

x ≥ -7

y/2 = 2 /2 √(x+7)

y/2 = √(x+7)

y ≥ 0

(y/2)² = √(x+7)²

y²/4 = x +7

x = y²/4 - 7

f(x) = x²/4 - 7

Bar graph is best for comparing change over time.

Using rectangular bars with heights or lengths proportionate to the values they represent, a bar chart or bar graph displays categorical data. Both a vertical and a horizontal bar plot are possible. A column chart is another name for a vertical bar graph.

The visual display of data (often grouped) in the shape of vertical or horizontal rectangular bars, with the length of the bars corresponding to the measure of the data, is called a bar graph. Bar charts are another name for them. One tool used in statistics for processing data is the bar graph.

Bar graph components

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When comparing data between groups or monitoring changes over time, bar graphs are utilized.

Hence, When comparing data between groups or monitoring changes over time, bar graphs are utilized.

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Answer:

You are correct

This is my answer: -3x^a y^f+b z^g+c

Step-by-step explanation:

(3x^a y^b z^c) (-y^f z^g)

-3x^a  y^f+b z^g+c

Because both have the same base is y, so we add both f and b

Same with z, both have the same base is z, so we have z^g+c

My answer is different in order, but both are correct!

The value of the account in 2020 is given as $8622.86.

The compound interest is a form of interest where the rate of interest is applied on the amount obtained after every interval of time.

The amount of one interval of time becomes the principal to the next one.

Suppose in 2005 t = 0.

Then, in the year 2020 t = 15.

Now, the given question can be solved by finding the Amount using the expression as below,

P(1 + r/100)ⁿ

Where p, r and n are the principal, rate and time for the compounding.

Substitute all the corresponding values to obtain,

A = 5000(1 + 3.7/100)¹⁵

   = 5000 × 1.037¹⁵ = 8622.86

Hence, in 2020 the money invested in the account becomes as $8622.86.

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The Coefficient of x² in the equation (3x²-5)(4+4x²) after simplification is -8 .

The Equation is given as : (3x²-5)(4+4x²)

To simplify , we first multiply the terms inside the bracket ;

So , given equation can be written as  (3x²-5)×(4+4x²)

⇒ 12x² + 12x⁴ - 20 - 20x²

Adding the like terms of the equation ,

we get ;

⇒ (12 - 20)x² + 12x⁴ - 20

Simplifying further , we get

⇒ 12x⁴ - 8x² - 20 .

In the equation above we see that the numerical term with the x² is (-8) .

Therefore , the required coefficient is -8 .

The given question is incomplete , the complete question is

What is the coefficient of x² in the equation after simplification ; (3x²-5)(4+4x²) ?

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Answer:

d. (2,1) and (4,2)

Step-by-step explanation:

Slope is rise/run or (y2 - y1) / (x2 - x1)

We see option D, the y increase by 1, and the x increase by 2

So, the slope of this equation is 1/2, and it matches our question.

So, D is the answer!

If you can, please give me a Brainliest! Thank you, and have a good day!

Answer:

d. (2,1) and (4,2)

y = 1/2x

2y = x

x = 2y

CHECKING

x = 2y        (substitute (2,1) and (4,2)

2 = 2(1)

2 = 2          correct

x = 2y

4 = 2(2)

4 = 4         correct

Step-by-step explanation:

Answer:

Point-slope form: y + 2= 0.5(x + 3)

Slope-intercept form: y = 0.5x - 0.5

Step-by-step explanation:

Answer:

$0.55/ounce

Step-by-step explanation:

The problem gives us the ratio of cost to ounce. We need to create a proportion (when you set two ratios equal to each other) to solve for one variable of the second ratio.

⭐ The first ratio is [tex]$4.95/9 ounces[/tex], which means that it costs $4.95 for 9 ounces.

⭐ The second ratio is [tex]x/1 ounce[/tex], where x is the cost for 1 ounce of frozen yogurt.

. . . . . . . "per ounce" means "for every 1 ounce"

⭐ We need to set these two ratios equal to each other and solve for x.

. . . . . . . In proportions, keep the units of the numerators and denominators the same. In this case, we'll keep the cost as the numerators and the ounces as the denominators.

. . . . . . . [tex]\frac{4.95}{9} = \frac{x}{1}[/tex]

. . . . . . . [tex]\frac{4.95}{9}(1) = x[/tex]

. . . . . . . ∴ x = $0.55/ounce

Answer:

The boats cross paths at the points (1,8) and (4,11)

Step-by-step explanation:

First, we want to find the points of intersection between the two paths. We are given two equations, both in the form y=(equation). Since we want to find the intersection points, we set the two equations equal to each other (since both equal y we can plug one of the equations in for y into the other equation) to get

-x^2+6x+3=x+7

From here, we solve this like a normal quadratic equation, move all variables to one side first

-x^2+5x-4=0

This factors to -(x-1)(x-4)=0, giving us x=1 and x=4

Now we plug these back into one of the original equations (in this case the linear equation is much more simple) to give us the points (1,8) and (4,11)

The formula for a horizontal line at y=4 is as follows: There is no slope. 4.0 is the y-intercept.

What are the Slope and intercepts ?

In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction.

The slope expresses how quickly the dependent variable changes when the independent variable changes. The Greek capital letter D or D is frequently used by mathematicians and economics to represent change. Slope contrasts the change in the vertical axis, y, with the change in the horizontal axis, x.

On the x-axis, negative numbers are below the origin, and on the y-axis, they are to the left of the origin. If the x-value is negative, begin at the origin and go to the left; if the y-coordinate is negative, move downward.

Line graphs, also known as XY graphs, are used to visually represent data (the outcomes of an experiment) in order to demonstrate the link between various factors, such as the severity of the disease and time.

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Answer:

61

Step-by-step explanation:

Using the exterior angle theorem,

[tex]c-15+c-18=c+28 \\ \\ 2c-33=c+28 \\ \\ c-33=28 \\ \\ c=61[/tex]

The product of (2x - 5)² can be written in the form az²+bx+c as follows:

(2x - 5)² = (2x)² - 2(2x)(5) + (5)²

= 4x² - 20x + 25

In this expression, a = 4, b = -20, and c = 25.

The distance traveled by the arrow cannot be determined from the given information. The distance traveled by the arrow depends on the speed at which it is fired, which is determined by the amount of energy released when the bowstring is released.

The required graph of the given function y = -5x + 3 which has been attached below.

A graph can be described as a visual representation or a diagram that represents data or values.

To graph the function y = -5x + 3, you can start by making a table of values.

Here's an example:

x y

-2 -11

-1 -6

0 3

1 -2

2 -7

To plot these points, start by graphing the point (0,3). This is the y-intercept, where the line crosses the y-axis.

Then, use the slope of the line (-5) to find the next point. For example, if you go one unit to the right on the x-axis (from 0 to 1), the y-value decreases by 5 (from 3 to -2).

Continue graphing points in this way until you have plotted enough points to see the shape of the line. You should see that the line has a negative slope, meaning it goes down from left to right.

The required graph of the given function y = -5x + 3 has been plotted.

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The graph of the given function is a straight line.

A straight line is an endless one-dimensional figure that has no width. It is a combination of endless points joined on both sides of a point and has no curve.

Equation of straight line ( slope-intercept form) is, y= mx+ c

Where, m= slope of the line  & c= y-intercept.

Here, given function is, y=-5x+3 , which is an equation of straight line.

So, here, m= -5 & c=3

That is the line will passes through the point (0,3)

Now, if we put, y=0 then, x= 3/5=0.6

i.e., the line will also passes through the point (0.6,0)

So, we get, the required graph of the function ,

Hence, the graph of the function is a straight line.

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The 5 types of expression include:

The concept of algebraic expressions is the use of letters or alphabets to represent numbers without providing their precise values. We learned how to express an unknown value using letters like x, y, and z in the fundamentals of algebra. Here, we refer to these letters as variables.

Variables and constants can both be used in an algebraic expression. A coefficient is any value that is added before a variable and then multiplied by it. They include monomial, polynomial, binomial, trinomial, multinomial.

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The surface area of the triangular prism box Makayla decorates is 454.8 square centimeters

The surface area of a solid is obtained by adding together the surface areas of the faces or boundaries that encloses the solid.

The dimensions of the triangular prism are;

Rear rectangle;

Length = 12 cm

Width = 7 cm

Dimensions of side triangles;

Base length = 9 cm

Height = 7 cm

Area of each side triangle = 9 cm × 7 cm = 63 cm²

The dimensions of the rectangle at the bottom of the rectangular prism

Length = 12 cm

Width = 9 cm

Dimensions of the slant surface rectangle at the top of the triangular prism are;

Length = 12 cm

Width = 11.4 cm

The surface area of the box, A, is the sum of the individual surface areas, which can be found as follows;

A = 84 + 126 + 108 + 136.8 = 454.8

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The larger the base of a log function, the closer the graph approaches the asymptote of x = 0.

We know that for a exponential function b^x = y, b is the base, y is the exponent to which the base b is raised and x is the result obtained.

We can write this in logarithmic form as:

log_b(x) = y

A logarithm base is the subscript of the logarithm that carries or raises the exponent.

For example in case of log_(3) 9 = 2, the base here is 3.

The change of base formula is:

log_b(x) = log_c(x) / log_c(b)

Also as we know the bigger the logarithm base, the smaller the curve on the graph. This means, the larger the base of a log function, the closer the graph approaches the asymptote of x = 0.

The log function may increase at a slower rate if the base increases.

Therefore, if the base of a log function is large, the graph approaches the asymptote of x = 0.

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Answer:

B)Write down a division that has an answer of 54.8.

There is always at least one consecutive value of n for which Marvin has a successful approach.

By induction, we can demonstrate that the game must conclude after a maximum of n(n+1)/2 turns for the first half of the issue, Here Induction Means a method for demonstrating that a statement P(n) is true for every natural number n, and that the infinitely numerous examples P(0), P(1), P(2), P(3), etc. all hold, is mathematical induction. Informal analogies, such a ladder or a falling domino, are used to explain this technique .

Base case: If there is just one bowl, Marvin can get rid of it in one turn, ending the game after one.

Step one of induction: Assume that there are k bowls and that the game terminates after no more than k(k+1)/2 turns. When there are k+1 bowls, we shall demonstrate that the game terminates after at most (k+1)(k+2)/2 turns. The number of bowls lowers by one if Marvin takes a marble out of one, and the game must terminate after no more than k(k+1)/2 turns through induction hypothesis

When Marvin transfers a marble from bowl A to bowl B, where bowl A contains at least one marble and bowl B contains an equal number of marbles, bowl A loses one marble and bowl B gains one marble. The number of bowls stays the same because bowl B has at least as many marbles as bowl A. As a result, the game must still terminate after k(k+1)/2 turns at the latest.

In any scenario, the game ends after at most k(k+1)/2 turns, thus when there are k+1 bowls, the game must end after at most (k+1)(k+2)/2 turns. For the second component of the issue, we can demonstrate that for every positive integer k, there exists a n such that Marvin can devise a plan to extend the n-bowl game for at least kn turns.

Let's say Marvin wants the n-bowl match to go at least kn turns. He can accomplish this by ensuring that each bowl always contains at least k marbles. Marvin can start by putting k marbles in the first bowl, k-1 marbles in the second bowl, and so forth, down to 1 marble in the nth bowl, to accomplish this.

For the second component of the issue, we can demonstrate that for every positive integer k, there exists a n such that Marvin can devise a plan to extend the n-bowl game for at least kn turns.

Let's say Marvin wants the n-bowl match to go at least kn turns. He can accomplish this by ensuring that each bowl always contains at least k marbles. Marvin can start by putting k marbles in the first bowl, k-1 marbles in the second bowl, and so forth, down to 1 marble in the nth bowl, to accomplish this.

Marvin can select a bowl containing at least k marbles on each turn and transfer one marble to a bowl containing fewer than k marbles .Marvin can transfer one marble from the first bowl to the second bowl, for instance, if there are k+1 marbles in the first bowl and k marbles in the second bowl. This guarantees that there are at least k marbles in each bowl. The game will go for at least kn turns because Marvin can take at least one turn every bowl.

For the third component of the issue, we can demonstrate that there is always at least one value of n for which Marvin has a successful strategy.

Assume that n is a positive integer. We shall demonstrate that either Marvin or Marisa has a winning strategy for the game of n bowls or the game of (n+1) bowls.

If Marvin has a winning strategy for the N-bowl game, he can use that method to win the N-bowl game.

If Marisa has a winning strategy for the n-bowl game and Marvin does not, then Marisa does as well. In this scenario, Marvin can use Marisa's successful approach to the n-bowl game as his own successful approach to the (n+1)-bowl game.

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This expression of is identical to the statement in factored form of

4 (x² - 2x) 2 (x² - 3) is 2 (x - 1) (x – 3)

Given,

4(x² – 2x) – 2(x² – 3)

We would first of all expand the expression given

This becomes

= 4x² - 8x - 2x² + 6

Rearrange to enable us simplify

4x² - 2x² - 8x + 6

= 2x² - 8x + 6

Factorize

2 (x² - 4x + 3)

factorizing further using the factors of 3 that add up to -4

2(x² - x - 3x + 3)

pick out the common factors

2 (x (x - 1) - 3 (x - 1)

2 (x - 1) (x - 3)

Hence, the correct answer is A) 2(x - 1) (x – 3)

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Arya needs to add 2 gallon of 70% antifreeze must be added to a  3-gallon mixture containing 20% antifreeze to obtain the mixture they need.

What is antifreeze?

Antifreeze is an additive that lowers a liquid's freezing point that is made of water. For cold environments, freezing-point depression is accomplished using an antifreeze mixture. Additionally, common antifreezes raise the liquid's boiling point, enabling higher coolant temperatures.

Let x be the amount of 70% antifreeze to be added, in gallons.

In terms of percentage of antifreeze, we write:

20% of 3 gallons + 70% of x gallons = 50% of (3 + x) gallons

0.2(3) + 0.7x = 0.5(3 + x)

0.6 + 0.7x = 1.5 + 0.5x

0.7x - 0.5x = 1.5 - 0.6

0.2x = 0.4

x = 2

Hence, Arya needs to add 2 gallon of 70% antifreeze must be added to a  3-gallon mixture containing 20% antifreeze to obtain the mixture they need.

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Julie has only 23.79 seconds left to match the record.

We know that times deals with a continued sequence of existence and events that occurs in an apparently irreversible succession from the past

From the question, the given times are:

Time to match Lisa's record = 74.6 seconds

Time to clin the wall = 10.56 seconds

Time already spent on climbing wall = 4.025 seconds

Time left is calculated thus

74.600 seconds =(40.025+10.56) seconds

=74.600-50.585

=23.79 seconds

Therefore time left is 23.79 seconds

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Answer:

A gain of 3 points

Step-by-step explanation:

I'm not sure the options are correct. But normally, you add up the lost points on the both days. Then you compare it to the gained point on Wednesday.

Answer:

x=6/5

Step-by-step explanation:

x-4=6x-10

-5x=-6

x=6/5

y=6/5-4=-14/5

Answer:

x = 1.2

y = -2.8

Step-by-step explanation:

y = x - 4 and y = 6x - 10

so x - 4 = 6x - 10

x - 6x = 4 - 10

-5x = -6

x = -6/-5

x = 1.2

y = x - 4 = 1.2 - 4 = -2.8

Answer: The answer is 100 :)

Step-by-step explanation:

you multiply L x W and that would be 10 x 10 and if you do the math right you should get an answer of 100

In a case of binomial distribution of of x where n = 5 and p = 0.05, the probability that x is at least 1 is not 0.6240, it is 0.2262.

Therefore, the answer is False.

The formula for binomial distribution is

P = nCx × pˣ × (1 - p)⁽ⁿ⁻ˣ⁾

where P is the probability

n is the total number of trials

x is the number of success trial

p is the probability of success in a single trial

From given details

n = 5

p = 0.05

P( x is at least 1) = 1 - P( x is less than 1)

P( x is at least 1) = 1 - P( x is 0)

P( x is at least 1) = 1 - 5C0 × 0.05⁰ × (1 - 0.05)⁽⁵⁻⁰⁾

P( x is at least 1) = 1 - 1 × 1 × 0.95⁵

P( x is at least 1) = 1 - 0.7738

P( x is at least 1) = 0.2262

--The question is incomplete, answering to the question below--

"If x is binomial with n = 5 and p = 0.05, the chance that x is at least 1 is 0.6240. True or False."

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Median of the data 78 , 56 , 22 , 34 is 45.

The middle value of the observations in a data set , arranged in the order of size is known as the median.

It is calculated differently for odd and even number of observations.

1. For odd no. of observations, it is the middle value .

2. For even number of observations, it is calculated as the average of the middle two values.

In this problem , first we arrange the observations in the order of size i.e. 22 , 34, 56, 78.

Since, here the no. of observations is even , 4. So, the median is the average of middle two values.

The middle two values are 34 and 56 , and their mean is 45.

So, the median of the given data is 45.

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Answer:

8.8 mins

Step-by-step explanation:

to find how long in mins it would take to fill the tank

at 180 degrees the speed of water is 15 liters/min at 123 degrees

so [tex]\frac{15}{180} *123[/tex] = 10.25 liters/min

the capacity of the tank is 90.2 liters

[tex]\frac{90.2}{10.25} \\[/tex] = 8.8 mins

Answer:

Heigh of rectangle: Area divided by base

Step-by-step explanation:

Area of rectangle: Base x Height

So, to find the height, we need to take the Area divided by the Base, and we will get the height of a rectangle!