En la clase de matematicas hay un total de 50 alumnos han aprobado el 80% ¿Cuántos alumnos han reprovado

Answer: x is less than 7

Step-by-step explanation:

(-infinity, 7)

Twο pοints (8,8) and (-2,6) are the set οf the equatiοn  \(y < \frac{3}{4} x+6\\\) οf the graph \(y = \frac{3}{4} x+6\).

Graph, a diagram that shοws hοw a variable varies in relatiοn tο οne οr mοre οther variables (such as a cοllectiοn οf pοints, lines, line segments, curves, οr regiοns).

Nοw we have tο find the value οf the equatiοn i.e. \(y < \frac{3}{4} x+6\\\),

(x, y) = (8,8) , we get 8 < 12 , First pοint

(x, y) = (-4,3) , we get 3 = 3 , Nο match

(x, y) = (6,-2) , we get -2 < 10.5 , Secοnd Pοint

(x, y) = (0, 8) , we get 8 > 6 , Nο Match

(x, y) = (-9,2) , we get 2>-0.75 , Nο Match

Sο, we get οur pοints, which are pοints (8,8) and (-2,6) fοr the equatiοn \(y < \frac{3}{4} x+6\\\).

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Answer:

A B and C

Step-by-step explanation:

Lines that are parallel have the same x value

Ex. y=4x+5 is parallel to y=4x-12

Camden must work a minimum of 2 hours babysitting and 9 hours of lifeguarding to meet the requirements.

A solution to an equation is a number that can be substituted for the variable to provide a true number statement.

Let's call the number of hours Camden works babysitting "x".

We know that x + 9 (hours of lifeguarding) cannot be more than 14 and that his total earnings must be at least $180. So we can write two equations based on these conditions:

x + 9 ≤ 14 (hours worked can't exceed 14)

10x + 18 × 9 ≥ 180 (earnings must be at least $180)

Now we can substitute the first equation into the second:

10x + 18 × 9 ≥ 180

10x + 162 ≥ 180

10x ≥ 18

x ≥ 1.8

Since x has to be a whole number of hours, we round up to find that Camden must work at least 2 hours babysitting.

So, Camden must work a minimum of 2 hours babysitting and 9 hours of lifeguarding to meet the requirements.

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The relative minimum points are (-1/2, 1, -19/4) and no saddle points of the function f(x,y) = 7x² - 8y² + 7x + 16y + 8. The only critical point is (-1/2, 1).

To find the critical points of the function f(x,y) = 7x² - 8y² + 7x + 16y + 8, we need to solve the system of partial derivatives equal to zero:

f x = 14x + 7 = 0

f y = -16y + 16 = 0

Solving for x and y, we get:

x = -1/2

y = 1

So the only critical point is (-1/2, 1).

To classify the critical point, we need to calculate the second-order partial derivatives:

f xx = 14

f xy = 0

f yx = 0

f yy = -16

Using the Hessian matrix at the critical point is:

D = f xx f yy - f xy f yx = (14)(-16) - (0)(0) = -224

Since D < 0 and f xx > 0, we have a relative minimum at (-1/2, 1).

Since there is only one critical point, there are no saddle points.

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Therefore, the probability that the student plays neither tennis nor netball is 1/5 = 0.2 or 20%.

There are 40 students in a class. 19 students play tennis, 20 students play netball, and 8 students play neither of these sports.

A student is chosen randomly from the class, and we need to determine the probability that the student: Plays tennis If a student is randomly chosen from the class, the probability that the student plays tennis is: Probability of playing tennis= (Number of students playing tennis) /

(Total number of students in the class) Probability of playing tennis= 19 / 40Plays netball if  a student is randomly chosen from the class, the probability that the student plays netball is: Probability of playing netball= (Number of students playing netball) / (Total number of students in the class)Probability of playing netball= 20 / 40 = 1/2Plays neither of these sports a student is randomly chosen from the class, the probability that the student plays neither tennis nor netball is

:Probability of playing neither tennis nor netball= (Number of students who do not play either of the two sports) / (Total number of students in the class)Probability of playing neither tennis nor netball= 8 / 40Probability that the student plays tennis and netball

Probability of playing tennis and netball = (Number of students playing both tennis and netball) / (Total number of students in the class)We are given that none of the students play both tennis and netball, so the probability of playing both tennis and netball is 0.

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Therefore, the expression for the total cost in dollars that Camille will need is 2.50p + 1.50p = 4p.The answer to the given problem is 4p. Let's suppose that there will be p people at the party altogether. Camille estimates that she will need one bag of cheese popcorn and one pack of gummy worms per person.

A bag of cheese popcorn costs $2.50, and a pack of gummy worms costs $1.50.The expression for the amount of cheese popcorn in dollars that Camille will need is 2.50p and the expression for the amount of gummy worms in dollars that Camille will need is 1.50p.To find the total cost in dollars that Camille will need, we add the cost of the cheese popcorn to the cost of the gummy worms.

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Answer:

2/6

1/6

2/6

0/6

Step-by-step explanation:

The perimeter of triangle is 66.24 units.

What is triangle?

In Euclidean geometry, any 3 points, once non-collinear, verify a unique triangle and at the same time, a unique plane

Main body:

according to question :

c = 28

let the vertices be A,B,C

∠A= 30°

by using trigonometric ratios,

BC/ AB = sin30°

AB = C = 28

BC/28 = sin30°

BC = 28*sin30°

BC= 28*(1/2)

BC = 14

similarly

AB /CA = cos 30°

28/CA = √3/2

CA = 28*√3/2

CA = 14/√3

CA = 24.24

Hence , perimeter = AB +BC +CA = 28+14+24.24

                              =66.24 units

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The values, 1:5, 6:30, 10:50, 11:55 and 18:90, will complete the given ratio table.

According to the question,

We have the following information:

We have a ratio table where two rows from the beginning are given.

In these rows, we have 1:5 and 6:30.

Now, we can easily find that the number in the second column is found by multiplying 5 into the number in the first column.

Now, for the third row, we have the number in the second column,50:

x*5 = 50

x = 50/5

x = 10

Third row: 10 to 50

Fourth row:

Number in the first column = 11

11*5 = 55

11:55

Fifth row:

Number in the first column = 18

18*5 = 90

18:90

Hence, the values, 1:5, 6:30, 10:50, 11:55 and 18:90, will complete the given ratio table.

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Answer:

-17/12

Step-by-step explanation:

We have x+y

If x=1/3 and y=-7/4,

we can substitute them in and get:

1/3+(-7/4)

=1/3-7/4

=4/12-21/12

=-17/12

Answer:

1/3 + -7/4 =

4/12 + -21/12=

-17/12=

-1 5/12 this is what i got i dont know how the hail i got this 0_o

Step-by-step explanation:

The arrow's motion can be described by parametric equations: x = V₀cosθt and y = -4.9t² + V₀sinθt + h, where V₀ is the initial velocity, θ is the launch angle, t is the time, and h is the initial height. To determine the time the arrow is in the air before touching the ground and the maximum height reached, we need to solve for the corresponding values in the equations.

(a) To find the time the arrow is in the air before touching the ground for the final time, we need to determine the value of t when y equals zero (the ground level). We can set the equation -4.9t² + V₀sinθt + h = 0 and solve for t. This equation represents the vertical motion of the arrow. Once we find the value of t, we can round it to the nearest tenth.

(b) To determine the maximum height reached by the arrow, we need to find the vertex of the parabolic equation -4.9t² + V₀sinθt + h. The maximum height occurs at the vertex of the parabola, which corresponds to the highest point of the arrow's trajectory. We can use the formula t = -b/2a, where a = -4.9 and b = V₀sinθ, to find the time at which the maximum height is reached. Once we find the value of t, we can substitute it into the equation y = -4.9t² + V₀sinθt + h to calculate the maximum height, rounding it to the nearest whole number.

By solving for the time when the arrow touches the ground and finding the maximum height, we can better understand the arrow's motion and trajectory.

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Answer:

The correct answer is 360 - 150 = x

Answer:

The answer is -1.8

Step-by-step explanation:

5 x -1.8 = -9 = -9 divided by -1.8 = 5

Answer:

-1.8

Step-by-step explanation:

You can reverse it by doing -9/5 and you get -1.8.

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The solution to the system of congruences is x ≡ 2675 (mod 17,550).

To solve this system of congruences, we can use the Chinese Remainder Theorem. First, we need to find the product of the moduli:  25 x 26 x 27 = 17,550
Then, for each congruence, we can find the value of m by dividing the product by the modulus:  m1 = 17,550 / 25 = 702
m2 = 17,550 / 26 = 675
m3 = 17,550 / 27 = 650
Next, we need to find the multiplicative inverses of the mi's modulo their respective moduli. We can use the extended Euclidean algorithm to do this:
For m1: 702(25) + (-1)(17,550) = 1
So the multiplicative inverse of m1 modulo 25 is 702.
For m2: 675(26) + (-1)(17,550) = 1
So the multiplicative inverse of m2 modulo 26 is 675.
For m3: 650(27) + (-1)(17,550) = 1
So the multiplicative inverse of m3 modulo 27 is 650.
Now, we can use these values to find x:  x = (12)(702)(25) + (9)(675)(26) + (23)(650)(27)
x = 4,277,850
But since we are working modulo 17,550, we need to find the remainder when x is divided by 17,550: x ≡ 4,277,850 (mod 17,550)
x ≡ 2675 (mod 17,550)

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In this problem, the market demand function for corn is Qd = 15 - 2P and the market supply function is Qs = 5P - 6, both quantities measured in billions of bushels per year.Aggregate Surplus:The equilibrium occurs at the point where Qd = Qs. Equating these two we get,15 - 2P = 5P - 6Solving for P, P = $2.50.

Qd = 15 - 2(2.50) = 10 billion bushels and Qs = 5(2.50) - 6 = 7.5 billion bushels.Aggregate surplus = Total willingness to pay - Total expenditureAggregate surplus = (1/2) × P × Q - Total expenditureAt equilibrium, Total expenditure is the area of the rectangle ABCD, which is $25 billion.Aggregate surplus = (1/2) × P × Q - Total expenditure = 12.5 - 25 = -$12.5 billionConsumer Surplus:Consumer surplus is the difference between the total willingness to pay measured by the area under the market demand curve up to 10 billion bushels and the total expenditure.Consumer surplus is the blue shaded triangle.

Producer surplus is the yellow shaded triangle.Producer surplus = (1/2) × (2.50 - 0) × 7.5 = $9.375 billion Comparing Figures 14.18(a) and (b), we can see that the green shaded area in Figure 14.18(a) equals the sum of the blue and yellow shaded areas in Figure 14.18(b), which represent consumer surplus and producer surplus, respectively. .

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We can simplify \((16x^4)^(-1/2) to 1/(4x^2)\) using the properties of rational exponents.

Certainly! Here's an example:

Simplify the expression: \((16x^4)^(-1/2)\)

We can apply the property of rational exponents which states that \((a^m)^n = a^(m*n)\). Using this property, we get:

\((16x^4)^(-1/2) = 16^(-1/2) * (x^4)^(-1/2)\)

Next, we can simplify \(16^(-1/2)\) using the rule that \(a^(-n) = 1/a^n\):

\(16^(-1/2) = 1/16^(1/2) = 1/4\)

Similarly, we can simplify \((x^4)^(-1/2)\) using the rule that \((a^m)^n = a^(m*n)\):

\((x^4)^(-1/2) = x^(4*(-1/2)) = x^(-2)\)

Substituting these simplifications back into the original expression, we get:

\((16x^4)^(-1/2) = 1/4 * x^(-2) = 1/(4x^2)\)

Therefore, the simplified expression is \(1/(4x^2).\)

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Answer:

Step-by-step explanation:

GCF of 2x and 4 is 2

2x+  4 = 2*x + 2*2

            = 2*(x + 2)

Answer:

Step-by-step explanation:

145.90

That would be linear because its going at a constant rate of change

Referring to Table 3.1, if the government imposes a price of $3, a shortage will result.

To determine the outcome when the government imposes a price of $3, we need to compare the quantity demanded and quantity supplied at this price level.
According to Table 3.1, at a price of $3, the quantity demanded is 30 units, while the quantity supplied is 40 units. The quantity demanded (30 units) is less than the quantity supplied (40 units), resulting in a situation known as a shortage.
A shortage occurs when the quantity demanded exceeds the quantity supplied at a given price. In this case, a shortage of 10 units occurs because consumers are willing to buy more than what producers are offering at the price of $3.
To summarize, if the government imposes a price of $3 based on Table 3.1, a shortage will result. This means that the quantity demanded exceeds the quantity supplied at the given price, indicating that consumers are unable to purchase all the units they desire.

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 the complete question is:

Table 3.1
Quantity Demanded.
Price per Unit
Quantity supplied
10
$5
50
20
30
$4
$3
40
30
40
50
$2
$1
20
10
Refer to Table 3.1. If the government imposes a price of $3.
a shortage will result.
Market is in equilibrium.
the price will fall to $1 because producers will be forced to incur losses.
a surplus will result.

The quadratic function f(x)=2(x+1)^2-8 in standard for and intercept form is 2x^2+4x-6 and (x-1)(x+3).

Given:

f(x) = 2(x+1)^2 - 8

= 2(x^2+1+2x) - 8

= 2x^2 + 2 +4x - 8

= 2x^2+4x-6(standard form)

Intercept form:

= 2x^2+4x-6

= (x-1)(x+3)

x-1 = 0

x = 1

x+3 = 0

x = -3

(1,0) and(-3,0).

Therefore the quadratic function f(x)=2(x+1)^2-8 in standard for and intercept form is 2x^2+4x-6 and (x-1)(x+3).

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Answer:

To find the lateral surface area of a tissue box, follow these steps:

Identify the dimensions of the box. The lateral surface area is the sum of the areas of the four vertical sides of the box, so you need to know the height, length, and width of the box.

Identify the shape of the sides. The four sides of a tissue box are typically rectangles, but they may be squares or parallelograms, depending on the design of the box.

Calculate the area of one side. To find the area of a rectangle or square, multiply the length by the height. For example, if the box is 5 inches long and 3 inches tall, the area of one side is 5 x 3 = 15 square inches.

Calculate the area of all four sides. Multiply the area of one side by 4 to get the total lateral surface area. For example, if each side of the box is 15 square inches, the total lateral surface area is 4 x 15 = 60 square inches.

Note that the lateral surface area only includes the four vertical sides of the box, not the top and bottom surfaces. To find the total surface area of the box, including the top and bottom, you would need to calculate the area of all six sides.

Answer: 126 square inches.

Step-by-step explanation: To find the lateral surface area of a rectangular prism (such as a tissue box), you need to add up the areas of all the sides except for the top and bottom faces.

In this case, you have a tissue box with dimensions 5 inches, 7 inches, and 4 inches. The top and bottom faces each have an area of 5 x 4 = 20 square inches.

The four lateral faces each have an area of length x width, so you can add these up to find the total lateral surface area:

Lateral surface area = 2 x (5 x 7) + 2 x (7 x 4)

Lateral surface area = 70 + 56

Lateral surface area = 126 square inches

Therefore, the lateral surface area of the tissue box is 126 square inches.

Answer:

yellow

Step-by-step explanation:

you can only change the amount of games you buy, which would be 24/game for xbox one and 20/game for ps4

The length and width of the toolbox given the diagonal is 45 inches and 15 inches respectively.

Hypotenuse ² = opposite ² + adjacent ²

30² = w² + (3w²)

30² = 4w²

900 = 4w²

w² = 900/4

= 225

w = √225

w = 15

Therefore,

Width of the triangle = w

= 15 inches

Length of the triangle = 3w

= 3(15)

= 45 inches

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Answer:

the rational number 43/9 is the answer

Step-by-step explanation: