Jack bought a coin for $200, which he sold later for $175. Find the percent of change. Did Jack make a good investment?

fractions with the same denominator added together

You must add the numerators and keep the same denominator when adding fractions with the same denominator. Since the denominators of the two fractions are the same, we must add the numerators while maintaining the same denominator, which is 4.

What are the parts of fraction?

A fraction consists of two components. The numerator is the figure at the top of the line. It details the number of equal portions that were taken from the total or collection. The denominator is the figure that appears below the line.

The number below the bar is called the denominator . It tells the number of equal parts into which the whole has been divided. The number above the bar is called the numerator. It tells how many of the equal parts are being considered.

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If the first bus is boarded at a rate of 15 people per minute, the domain of the function is; (15 ≤ x ≤ 45)

We are told that;

Total number of Juniors at Smithers High School that are taking a class trip = 130

Number of buses taking each student to their destination = 3 buses

Capacity of each bus = 45 people

Now, if the function  f(x) describes the total number of people on the first

bus, where x is the number of minutes spent loading the bus.

Then since the maximum number of people on the first bus is 45, then it means that the domain of the function is;

(15 ≤ x ≤ 45)

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Expreion have a quotient of 6 is 0. 48 ÷ 0. 08.

What is quotient?

In mathematics, the quotient is the result of performing division operations on two integers. It is essentially the outcome of the division procedure. In arithmetic division, the terms divisor, dividend, quotient, and remainder are employed in four different ways.Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

0. 48 ÷ 0. 8

=0.06

The solution for Long Division of [tex]$\frac{4.8}{8}$[/tex] is 0.6

The solution for Long Division of [tex]$\frac{0.48}{0.08}$[/tex] is 6.

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Answer:

D

Step-by-step explanation:

To solve for a you would need to subtract k from both sides.  That would leave you with

y - k = a ([tex]x-h)^{2}[/tex]  then, divide both sides by [tex](x-h)^{2}[/tex] to get letter d

Answer:

.......................

Answer:

$22,950,  $4,590

Step-by-step explanation:

Divide 306,000 by 100. This equals 3060, or one percent of the profit.

Multiply this profit by 7.5 to get $22,950, which is the amount to agency makes.

To find what the agent makes, divide 22,950 by 10 to get 2,295, or ten percent of the agency's profits. Double it and it will 20 percent or $4,590, the amount the agent makes.

The population proportion of non-fatal accidents that involved the use of a cell phone is 0.03567

A population proportion is known as the share of a population that belongs to a particular group. The Confidence intervals are used to estimate population proportions.

as per given in the question,

The total number of accidents (n) are 600

The accidents involving cell phones (x) are 214

the sample proportion ([tex]\hat p[/tex]) = x/n

where

x is the count of the successes

n is the total size of the population

P is the population proportion

=> 214/600

=> 0.3567

the estimated point for population proportion is

[tex]\hat p[/tex] = 0.03567

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Answer:

x= -28

y= 6

Step-by-step explanation:

-x-7y = -14  

-4x-14y=28

Let's find x first! First, we time the first equation by -2

2x + 14y = 28

-4x -14y = 28

Add them; you will get

-2x = 56

x = -28

Then put -28 back in the x, and you will get

y= 6

Answer:

Step-by-step explanation:

m=riserun=ΔyΔx

m=y2−y1x2−x1

m=0−2−2−2

m=−2−4

m=12

The answer is :

m = 0.5

Increasing, as the slope is positive (1/2)

Answer:

Increasing.

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{6.3 cm}\underline{Slope-intercept form of a linear equation}\\\\$y=mx+b$\\\\where:\\ \phantom{ww}$\bullet$ $m$ is the slope. \\ \phantom{ww}$\bullet$ $b$ is the $y$-intercept.\\\end{minipage}}[/tex]

Given linear equation:

[tex]y=\dfrac{1}{2}x+2[/tex]

Comparing the given linear equation with the slope-intercept formula, the slope of the given equation is ¹/₂.

The graph of a linear equation is increasing if its slope is positive.

(y-values increase as x-values increase).

The graph of a linear equation is decreasing if its slope is negative.

(y-values decrease as x-values increase).

Therefore, as the slope of the given linear equation is positive, its graph is increasing.

The axis of symmetry of the parabola would be x = 2

From the question, we have the following parameters that can be used in our computation:

Vertex = (2, 13)

Rewrite the vertex as follows

So, we have the following representation

(x, y) = (2, 13)

Remove the y-coordinates

This gives

x = 2

This represents the axis of symmetry

Hence, the axis of symmetry is x =2

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Step-by-step explanation:

since f(x) = 2×x + 1

therefore f(2.99) = 2×2.99 + 1 = 6.98 ≈ 7

therefore f(2.999) = 2×2.999 + 1 = 6.998 ≈ 7

therefore f(3.01) = 2×3.01 + 1 = 7.02 ≈ 7

therefore f(3.001) = 2×3.001 + 1 = 7.002 ≈ 7

now for the what conclusion can you draw from these results i dont 100% know but i think he wants that

the point x = 3 and the point y = 7

since f(x) = y

and since we have the approximate of x 3

Answer: 1/20

Step-by-step explanation:

....................................

an equation showing a way to estimate to the neasrt inch the total rainfall for the two day 2.45 + 1.72 ≈ 4.2 inches

1. Add the two amounts of rainfall together: 2.45 + 1.72

2. Round the answer to the nearest inch: 4.2 inches

3. The equation to estimate the total rainfall for the two days is 2.45 + 1.72 ≈ 4.2 inches.

This equation provides a simple way to estimate the total rainfall for two days. By adding the two amounts of rainfall, we can then round the answer to the nearest inch to obtain the estimated total rainfall. This equation can be used to quickly and accurately estimate rainfall totals for any two-day period.

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The factor which tarriq musr use if solving the equation using the multiplication property of equality to finish solving is 2.

The correct answer option is option D

Tarriq solution:

50 + 2x = –190

50 + 2x = –190

50 – 50 + 2x = –190 – 50

2x = –240

Correct solution:

50 + 2x = –190

Subtract 50 from both sides

50 - 50 + 2x = -190 - 50

2x = - 240

divide both sides by 2

x = -240/2

x = -120

In conclusion, x = -120 is the solution to tarriq equation if using multiplication property of equality.

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Answer:

[tex] r = \sqrt{\dfrac{V}{\pi h}} [/tex]

Step-by-step explanation:

V = πr²h

Switch sides.

πr²h = V

Divide both sides by πh.

r² = V/(πh)

Take the square root of both sides.

r = √[V/(πh)]

[tex] r = \sqrt{\dfrac{V}{\pi h}} [/tex]

Refer to the photos taken.

There are 324 miles can Mario drive with 9 gallons of gas.

Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.

Given that;

He can drive 18 miles on ½ a gallon of gas.

Now,

Since, He can drive 18 miles on ½ a gallon of gas.

Let the number of miles cover with 9 gallons of gas = x

So, By definition of proportion, we get;

⇒ 18 / (1/2) = x / 9

⇒ 18 × 2 = x / 9

⇒ 36 × 9 = x

⇒ x = 324 miles

Thus, The number of miles cover with 9 gallons of gas = 324 miles

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Answer: C

Step-by-step explanation:

The value of function  f(2) if  f'(x)= cos(x²), and f(3) = 7 is  [tex]\sqrt{\frac{\pi }{2}}\mathbb{C}\left(\sqrt{\frac{4}{\pi }}\right)+C[/tex].

The relationship between a set of potential outputs and a set of potential inputs is called a function, and it has one relationship per output between each input. This indicates that a function f will map an object x to exactly one object f(x) in the set of potential outputs if it is present in the set of inputs, also known as the domain (called the co-domain).

Given:

f'(x )= cos(x²),

f(3) = 7

Calculate the integration of the following function as shown below,

∫ f'(x) = 3∫cos(x²)

The integral is the Fresnel integral function, C(x)+C

[tex]\sqrt{\frac{\pi }{2}}\mathbb{C}\left(\sqrt{\frac{2}{\pi }}x\right)+C[/tex]

f(3) = 7

[tex]\sqrt{\frac{\pi }{2}}\mathbb{C}\left(\sqrt{\frac{2}{\pi }}3\right)+C[/tex]

Calculate the value of  f(2) as shown below,

f(2) = [tex]\sqrt{\frac{\pi }{2}}\mathbb{C}\left(\sqrt{\frac{2}{\pi }}\times 2\right)+C[/tex]

f(2) = [tex]\sqrt{\frac{\pi }{2}}\mathbb{C}\left(\sqrt{\frac{4}{\pi }}\right)+C[/tex]

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From 1750 to 1900, Europe's strength and dominance over the world grew dramatically.

New western political concepts developed strong, centralized states that directed empires all around the world, while industrialization created unprecedented wealth.

The following are the reasons and impacts of the various revolutions that occurred between 1750 and 1900:

The globe became really autonomous as a result of industrialization.

They were able to push for changes to their terrible working conditions through the formation of unions.

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The position of mailbox after 10s is equal to sum displacements is 14m.

The principle is that the slope of the line on a velocity-time graph reveals useful information about the acceleration of the object. If the acceleration is zero, then the slope is zero (i.e., a horizontal line). If the acceleration is positive, then the slope is positive (i.e., an upward sloping line).

Given velocity time graph understand in three parts.

1. first 6s mailbox have constant velocity 3m/s

the displacement covered by it = area under v-t graph(square shape)

s1=3 x 6 =18m

2. the mailbox at rest at 6-8 s.

the displacement covered by it s2=0

3. the mail returned with constant velocity 2m/s

Displacement is defined to be the change in position of an object. It can be defined mathematically with the following equation:

Displacement=Δx=[tex]x_{f} - x_{0}[/tex]

[tex]x_{f}[/tex]=refers to the value of the final position.

[tex]x_{0}[/tex]= refers to the value of the initial position.

Δx is the symbol used to represent displacement

the displacement covered by it s3 =(10-8) (-2) =-4m

the position of mailbox after 10s is equal to sum displacements=s1+s2+s3 =18+0-4=14m the displacement - time graph.

Therefore, the position of mailbox after 10s is equal to sum displacements is 14m.

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Draw the mail carrier's position-versus-time graph. Assume that x=0m at t=0s

What is the position of the mailbox?

Answer: B

Step-by-step explanation:

The constant rate of change or slope is rise/run

Let's pick 2 points ( 4, 12) ( 10, 0)

We see that the y decreases by 12 and the x increase by 6, so our slope is

-12/6 = -2 hours per person

So the answer is B

The equation of the line would be y = (-3/4)x + 5.

What is the slope-point form of the line?

For the line having slope "m" and the point (x1, y1) the equation of the line passing through the point (x1, y1) having slope 'm' would be

                      y - y1 = m(x - x1)

The given equation is [tex]y=-\frac{3}{4}x-17[/tex]

The required line is parallel to the given line.

and we know that the slopes of the parallel lines are equal so the slope of the required line would be m = -3/4

And the required line passes through (8, -1)

so by using slope - point form of the line,

      y - (-1) = (-3/4)(x - 8)

      y + 1 = (-3/4)x - (-3/4)8

       y + 1 = (-3/4)x + 24/4

       y = (-3/4)x + (12/2 - 1)

       y = (-3/4)x + 5

Hence, the equation of the line would be y = (-3/4)x + 5.

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The answer to 2 to the power of three halves equal to? is square root of 8 cube root of 8 cube root of 16 square root of 16 is  [tex]\sqrt{8}[/tex]

In mathematics, a square root of a number x is a number y such that y² = x; in other words, a number y whose square is x. For example, 4 and −4 are square roots of 16, because 4² = ² = 16.

From the question, we can simplify the question as

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

simplifying further by simplifying the power

[tex]2^{\frac{3}{2} }[/tex] = [tex](2^{3})\frac{1}{2}[/tex]

= [tex]\sqrt{2^{3} }[/tex]

= [tex]\sqrt{8}[/tex]

hence, the solution to the problem is [tex]\sqrt{8}[/tex]

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Applying the definition of the median of a triangle, the length of AO is calculated as: 14 units.

The median of a triangle is a line segment that joins the midpoint of a side of a triangle and the opposite vertex to the side.

There are three medians in a triangle, and the three of them intersect at a point inside the triangle. This point of intersection is known as the centroid.

According to the centroid theorem of a triangle, the length from the vertex to the centroid is two-third of the length of a median.

Thus, the figure shows that triangle ABC has three medians, BL, AM, and CK, which intersect at point O. This means the centroid of the triangle is point O.

By implication, it means that:

Length of AO = 2/3 * (length of AM)

Plug in the value of AM:

Length of AO = 2/3 * (21) [centroid theorem]

AO = 2 * 7

AO = 14

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The word IRON can be arranged is 24 unique ways.

Given:

The word = IRON

The number of unique ways in which the letters in the word IRON can be arranged = ?

The number of letters in IRON = 4

The number of positions = 4

In the first position, any one of the 4 letters can be placed

In the second position any one of the remaining 3 letters can be placed

In the third position any one of the remaining 2 letters can be placed

The fourth position can be filled with the left over letter

So the total number arrangement in unique way

= (Number of ways to fill in 1st position)* (Number of ways to fill in 2nd position)* (Number of ways to fill in 3rd position)* (Number of ways to fill in 4th position)

=> 4 *3*2*1

= 24 ways

Hence, The word IRON can be arranged is 24 unique ways.

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Answer:

720 / 6 = 120

120 * 4 = 480

P(1) = 120/720

P(2) = 120/720

P(3) = 120/720

P(4) = 120/720

P(5) = 120/720

P(6) = 120/720

P(1 + 2 + 3 + 4) = 480/720

Step-by-step explanation:

[tex]|3x+4|-9=0[/tex]

Add 9 to both sides:

[tex]|3x+4|-9+9=0+9[/tex]

[tex]|3x+4|=9[/tex]

Solve the Absolute Value:

[tex]3x+4=9or3x+4=-9[/tex]

__________________________________________________________

[tex]3x+4=9[/tex]

Subtract 4 from both sides:

[tex]3x+4-4=9-4[/tex]

[tex]3x=5[/tex]

Divide both sides by 3:

[tex]\dfrac{3x}{3} =\dfrac{5}{3}[/tex]

[tex]\fbox{x = $\dfrac{5}{3} $ or 1$\dfrac{2}{3}$}[/tex]

__________________________________________________________

[tex]3x+4=-9[/tex]

Subtract 4 from both sides:

[tex]3x+4-4=-9-4[/tex]

[tex]3x=-13[/tex]

Divide both sides by 3:

[tex]\dfrac{3x}{3} =\dfrac{-13}{3}[/tex]

[tex]\fbox{x = $\dfrac{13}{3} $ or -4$\dfrac{1}{3} $}[/tex]

________________________________________________________

[tex]\fbox{Options A and D}[/tex]