Pls help me I don’t understand it

The type of the conic basic x² - 4x + y² + 2y = 4 is a circle

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

x² - 4x + y² + 2y = 4

The above equation has the following features

Using the above as a guide, we have the following:

A conic section that has the above features is a circle

This means that the type of the conic basic is a circle

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Answer:

(.47 + .36 + 1)/3 = 1.83/3 = .61 = 61%

The most common number of hours volunteered is 22.

Option B is the correct answer.

We have,

A.
The number of students who volunteered more than 30 hours is greater than the number of students who volunteered fewer than 30 hours.

This can not be determined from the given stem-and-leaf plot as it only shows the frequency distribution of hours volunteered without any specific count of students.

The plot only indicates that there are some students who volunteered between 31-36 hours (stem 3, leaves 33, and 36) and one student who volunteered for 44 hours (stem 4, leaf 4).

Therefore, option A is not supported by the given data.

B.

The most common number of hours volunteered is 22.

From the stem-and-leaf plot, we can see that the mode is 22 as it has the highest frequency (stem 2, leaves 2, 5, 7, 8).

Hence, option B is supported by the given data.

C.

The number of students who volunteered between 9 and 20 hours is greater than the number of students who volunteered more than 40 hours.

This statement cannot be confirmed by the given stem-and-leaf plot as there are no leaves in stem 1, which means there are no students who volunteered less than 10 hours. Also, there are no leaves in stem 4, except for one leaf with a value of 44.

Therefore, we can not determine how many students volunteered between 9-20 hours and more than 40 hours. Hence, option C is not supported by the given data.

D.

The most common number of hours volunteered is 41.

There are no leaves in stem 4 except for the value of 44, which means there is no student who volunteered for 41 hours.

Hence, option D is not supported by the given data.

Therefore,

The most common number of hours volunteered is 22.

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The amount of allowance Claire would have on the 14th day is given by the geometric progression and a₁₄ = $ 409.60

Given data ,

The pattern in which the allowance is increasing is a geometric sequence with first term $0.05$ and common ratio $r=2$ since each term is twice the previous term.

The given GP has a common ratio of 2. We can find the 14th term using the formula:

aₙ = arⁿ⁻¹

Here, a1 = 0.05 and r = 2. Therefore,

a₁₄  = 0.05 * 2^(14-1)

a₁₄ = 0.05 * 2^13

a₁₄ = 0.05 * 8192

a₁₄ = 409.6

Hence , the 14th term of the given GP is $ 409.60

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The measurement closest to the total surface area of the triangular prism is J) 393.6  .

To find the surface area of a triangular prism, we need to find the area of all its faces and add them up.

Looking at the net of the triangular prism, we can see that it has two congruent triangles and three rectangular faces.

The area of each triangular face can be found using the formula for the area of a triangle:

Area of a triangle = (1/2) x base x height

In this case, the base of each triangle is 12 inches and the height is 4 inches. So, the area of one triangular face is:

(1/2) x 12 x 4  = 24  

The area of each rectangular face can be found using the formula:

Area of a rectangle = length x width

In this case, the length and width of the rectangular faces are:

12 in. x 10.4 in.

12 in. x 12 in.

4 in. x 10.4 in.

So, the area of each rectangular face is:

12  x 10.4 = 124.8  

12  x 12  = 144  

4  x 10.4  = 41.6  

Therefore, the total surface area of the triangular prism is:

2 x 24  + 124.8  + 144  + 41.6  = 393.6

So, the measurement closest to the total surface area of the triangular prism in square inches is J) 393.6   .

Correct Question :

The net of a triangular prism and its approximate dimensions are shown in the diagram, 4 in, 12 in, 10.4 in, 12 in, 12 in, 12 in. Which measurement is closest to the total surface area of the triangular prism in square inches?

F) 268.8  

G) 432  

H) 288  

J) 393.6  

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The value of the probability of the different events are,

The value of the probability P (3) is,

⇒ 1 / 5

And, The value of the probability P (blue & green) is,

⇒ 8/45

We have to given that;

A box contains 2 red marbles, 5 green marbles and 8 blue marbles.

Hence, Total marbles = 2 + 5 + 8 = 15

So, The value of the probability P (3) is,

⇒ 3 / 15

⇒ 1 / 5

And, The value of the probability P (blue & green) is,

⇒ 8/15 x 5/15

⇒ 8/15 x 1/3

⇒ 8 / 45

Thus, The value of the probability P (3) is,

⇒ 1 / 5

And, The value of the probability P (blue & green) is,

⇒ 8/45

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When writing a proof , by copying the “given” statement(s) from the original problem

Given data ,

A true assertion that is provided in the problem or is known to be true should be the first statement in a proof. The subsequent logical argument has this as its foundation.

We can provide the groundwork for the proof and proceed to the desired conclusion by duplicating the "given" statement(s) from the original problem.

Once the first statement is established, we can move on to writing additional statements that are each logically supported by the first statement.

The logical evolution of the preceding assertions demonstrates that the last statement should be the intended conclusion.

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Answer:

250.75

Step-by-step explanation:

Peak time cost = 0.85 × 45 = 38.25

Off peak time cost = 0.75 × 150 = 112.5

Monthly payment = R100

Total monthly bill = 100+112.5+38.25 = R 250.75

The quotient is 2x² + 3x + 2 and the remainder is -32x - 13.

We have,

We can use long division to divide f(x) by p(x) as follows:

x² - 3 | 2x^4 - x³ - 7x² + 7x - 13

           - (2x^4 - 0x³ + 6x²)

               ---------------------

                       - 13x² + 7x

                       - (-13x² + 39x)

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

                                     -32x - 13

The quotient is 2x² + 3x + 2 and the remainder is -32x - 13.

We can write the division in the form:

f(x) = p(x) x q(x) + r(x)

where p(x) is the divisor, q(x) is the quotient, and r(x) is the remainder. In this case, we have:

f(x) = (x² - 3) x (2x² + 3x + 2) - (32x + 13)

This means that we can write f(x) as the product of p(x) and q(x), plus the remainder r(x).

Thus,

The quotient is 2x² + 3x + 2 and the remainder is -32x - 13.

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Step-by-step explanation:

it says "college" in the headline of this question.

are you serious ?

this is an upper elementary or beginning of middle school problem.

if you have a problem with such a question in college, you really have a problem and would need intensive tutoring (you need to recover everything from the beginning of math).

in such problems, to find your way, always try to find the amount represented by 1 unit.

everything else can be then calculated in relation to that one unit.

3 cars cost $2.46

1 car costs therefore 1/3 of that :

2.46/3 = $0.82

and 25 cars cost then 25 times that of a single car :

0.82 × 25 = $20.50

in short, the direct approach is

$2.46 × 25/3 = $20.50

Answer:

[tex] \frac{3}{5} \times \frac{4}{3} \times 3 = \frac{3}{5} \times 4 = \frac{12}{5} = 2 \frac{2}{5} [/tex]

The volume of this rectangular prism is

2 2/5 cm^3.

The value of m∠Q as shown in the right-angled triangle is 54.718°.

The Formula used is:

m∠Q = cos⁻¹(s/r)........................ (1)

Where:

a = 8 m

b = 8√3 m

Now, Substitute these values into equation 1

m∠Q = cos⁻¹(8/8√3)

m∠Q = cos⁻¹(1/√3)

m∠Q = 54.718.

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The ordered pairs for t = 1 and t = 2 are (1, 1200) and (2, 2,400).

An equation to represent the relationship between the time t and the number of hard drives produced p is p = 1200t.

In Mathematics, a proportional relationship can be represented by the following mathematical expression:

p = kt

Where:

In order to have a proportional relationship and equivalent ratios, the variables p and t must have the same constant of proportionality. Therefore, we would determine the constant of proportionality (k) as follows:

Constant of proportionality (k) = p/t

Constant of proportionality (k) = 1,200/1

Constant of proportionality (k) = 1,200.

Therefore, the required equation is given by;

p = kt

p = 1,200t.

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Missing information:

The question is incomplete and the complete question is shown in the attached picture.

[tex]\textit{Law of Cosines}\\\\ c^2 = a^2+b^2-(2ab)\cos(C)\implies c = \sqrt{a^2+b^2-(2ab)\cos(C)} \\\\[-0.35em] ~\dotfill\\\\ c = \sqrt{7^2+8^2~-~2(7)(8)\cos(32^o)} \implies c = \sqrt{ 113 - 112 \cos(32^o) } \\\\\\ c \approx \sqrt{ 113 - (94.9814) } \implies c \approx \sqrt{ 18.0186 } \implies c \approx 4.2[/tex]

Make sure your calculator is in Degree mode.

The volume of a cube is 6859 cubic inches if the side of the cube is 19 inches.

The given function = V(x) = [tex]x^{3}[/tex]

Side of cube = 19 inches

The cube has six faces with 12 edges. That means three faces are visible at a time. That means the product of the three faces of a cube gives the volume of a cube.

In the question, it is stated that the length of the cube is to be substituted in the value of x in order to calculate the volume of a cube.

The volume V of a cube = V = [tex]x^{3}[/tex].

Substituting x = 19,

The volume of the cube = [tex]19^3[/tex]

Volume of cube = 6859

Therefore, we can conclude that the volume of a cube is 6859 cubic inches.

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The tuxedo was rented for 4 days.

Let's start by assigning variables to the unknowns. Let "x" be the number of additional days rented, and "d" be the total number of days rented (including the first day).

From the given information, we know that the flat fee for the rental is $150, so the cost of the additional days is the total cost minus the flat fee, which is $300 - $150 = $150. We also know that the cost for each additional day is $50. Therefore, we can set up the equation:

$150 + $50x = $300

Subtracting $150 from both sides, we get:

$50x = $150

Dividing both sides by $50, we get:

x = 3

So the tuxedo was rented for 3 additional days, making the total number of days rented:

d = 1 + 3 = 4

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Among the given options, the measure that cannot be the length of the third side of the triangle is 12 cm. The correct option is C 12 cm.

Determining the length that cannot not be the measure of the third side of the triangle

From the question, we are to determine the length that cannot be the measure of the third side of the triangle

From the given information, Two sides of the triangle are 7 cm and 4 cm From one of the properties of a triangle, we know that the length of a side of triangle is greater than the difference of the two other sides and it is less than the sum of the two other sides.

Let the length of the third side of the triangle be x.

Therefore,

x < 7 cm + 4 cm

x < 11 cm and

x > 7 cm - 4 cm

x > 3 cm

Hence, the measure that cannot be the length of the third side is 12 cm.

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Answer:

( 4t + 15 ) / 20

Step-by-step explanation:

Let me show you the formula for this type of question,

[tex] \frac{a}{c} + \frac{b}{d} = \frac{ad + bc}{cd} [/tex]

So here for you,

[tex] \frac{t}{5} + \frac{3}{4} = \frac{ 4t+15 }{20} [/tex]

Answer:

Question 3 : Less than one

Question 4 : Starting value

Step-by-step explanation:

Answer:

less than one + Starting value

Step-by-step explanation:

The answer for #3 is less than one because any number greater than one when multiplied increases the value of the number,

and #4 is starting value because it is what you are multiplying the change by. Please mark brainliest + enjoy the night!

The length of the perpendicular from Q to PR is approximately 3.86 units.

slope of PR = (y2 - y1) / (x2 - x1)

slope of PR = (15 - 3) / (5 - 1)

slope of PR = 3

Using the point-slope form of a line, we have:

y - y1 = m(x - x1)

y - 3 = 3(x - 1)

y - 3 = 3x - 3

y = 3x

The equation of the line perpendicular to PR and passing through Q is y = (-1/3)x + (17/3).

Finally, we can find the point where this line intersects PR by solving the system of equations:

y = 3x

y = (-1/3)x + (17/3)

Substituting the first equation into the second equation, we have:

3x = (-1/3)x + (17/3)

10/3 x = 17/3

x = 1.7

Substituting x = 1.7 into the first equation, we have:

y = 3(1.7)

y = 5.1

the point where the line perpendicular to PR intersects PR is (1.7, 5.1).

Now we can find the distance between Q and (1.7, 5.1) using the distance formula:

d = ✓((x2 - x1)² + (y2 - y1)²)

d = ✓((5 - 1.7)² + (4 - 5.1)²)

d = ✓(14.89)

d = 3.86

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The correct statement when writing a proof, how do you construct the first statement is,

⇒ By copying the “given” statement(s) from the original problem.

Since, We know that;

Evidence or argument establishing or helping to establish a fact or the truth of a statement.

Now, We just start any proof or derivation

By copying the “given” statement(s) from the original problem.

Thus, The correct statement when writing a proof, how do you construct the first statement is,

⇒ By copying the “given” statement(s) from the original problem.

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The value of y at the value of x = 13 is,

⇒ y = 78

We have to given that;

The value of y varies directly with x.

And, at y = 102 then x = 17

Since, The value of y varies directly with x.

Hence, We get;

⇒ y = kx

at y = 102 then x = 17;

⇒ 102 = k × 17

⇒ k = 102 / 17

⇒ k = 6

Hence, Equation is,

⇒ y = 6x

Plug x = 13;

⇒ y = 6 × 13

⇒ y = 78

Thus, The value of y at the value of x = 13 is,

⇒ y = 78

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Answer:

c.-5.81

Step-by-step explanation:

=-13/4 -2.56

=-581/100

=-5.81

The function is solved and f(x) represents the total number of hours; x represents the number of weeks he exercises this summer

Given data ,

Luke is keeping track of the total number of hours he exercises. He started the summer having already put in 15 hours, and he then exercises 7 hours each week.

So , the function is given by

The function to keep track of his exercise is f(x) = 7x + 15

On simplifying the equation , we get

f(x) represents the total number of hours; x represents the number of weeks he exercises this summer

Hence , the function is f(x) = 7x + 15

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Answer:

Natural numbers are a set of positive integers (whole numbers greater than zero) that are used for counting and ordering things. They are denoted by the symbol "N" and the set of natural numbers includes 1, 2, 3, 4, 5, 6, 7, 8, 9, and so on.

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Answer:

5 shipments had at least 10 broken tiles but less than 20 broken tiles.

Answer:

B circle graph

Step-by-step explanation:

circle graph or pie chart is the best representation since bar chart is not present

Answer:

12 ft

Step-by-step explanation:

See image

The coordinates of the new figure are:

A' = (-1, 4)

B' = (-3, 2)

C' = (1, 1)

We have,

The coordinates are in the form of an ordered pair as (x, y).

Where x is the x-axis value and y is the y-axis value.

From the figure,

We see that,

A' = (-1, 4)

B' = (-3, 2)

C' = (1, 1)

Thus,

The coordinates are:

A' = (-1, 4)

B' = (-3, 2)

C' = (1, 1)

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