What is the correct answers???

Answer:

A

Step-by-step explanation:

at least are key words for   \(\geq\) symbol

Area is L x W and since you have W its basically:

\(33x\geq 165\)

Answer:

Step-by-step explanation:

We need to find whether the two given triangles are congruent.

The given triangles are congruent.

The distance between two points is given by

\(d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)

A(2,-8) and B(-5,-2)

\(AB=\sqrt{(-5-2)^2+(-2-(-8))^2}\\\Rightarrow AB=\sqrt{49+36}\\\Rightarrow AB=\sqrt{85}\)

D(-9,7) and E(-11,12)

\(DE=\sqrt{(-11-(-9))^2+(12-7)^2}\\\Rightarrow DE=\sqrt{29}\)

B(-5,-2) and C(-7,3)

\(BC=\sqrt{(-7-(-5))^2+(3-(-2))^2}\\\Rightarrow BC=\sqrt{29}\)

E(-11,12) and F(-2,1)

\(EF=\sqrt{(-2-(-11))^2+(1-12)^2}\\\Rightarrow EF=\sqrt{202}\)

A(2,-8) and C(-7,3)

\(AC=\sqrt{(-7-2)^2+(3-(-8))^2}\\\Rightarrow AC=\sqrt{202}\)

D(-9,7) and F(-2,1)

\(DF=\sqrt{(-2-(-9))^2+(1-7)^2}\\\Rightarrow DF=\sqrt{85}\)

It can be seen that \(AB=DF=\sqrt{85}\), \(BC=DE=\sqrt{29}\) and \(AC=EF=\sqrt{202}\).

Since, each side of triangle ABC is equal to one side of triangle DEF they are congruent to each other.

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Explanation:

It is a function because it passes the vertical line test. We cannot draw a single vertical line through more than one point on the red curve. Any x input leads to exactly one and only one y output.

A similar test is the horizontal line test. We cannot draw a single horizontal line through more than one point on the red curve, so this red curve passes the horizontal line test. Each y is only paired with one x value only. This helps set up an inverse function.

-----------

In short:

If the curve passes the vertical line test, then we have a function

If the curve passes the horizontal line test, then it is one-to-one.

Step-by-step explanation:

a/2-3=8

a-6 =8

2

a-6=16

a=16+6

a=22

hope it helps.

Step-by-step explanation:

the answer is in the above image

Answer:

4x(5 − x^2)

Step-by-step explanation:

20 − 4x^3

= 4x(5 − x^2)

The equivalent expression after taking a common factor is,

⇒ 2 (10 - 2x³)

What is Mathematical expression?

The combination of numbers and variables by using sign addition, subtraction, multiplication and division is called Mathematical expression.

Given that;

The expression is;

⇒ 20 - 4x³

Now, Take common factor as;

⇒ 20 - 4x³ = 2 × 10 - 2 × 2x³

                 = 2 (10 - 2x³)

Thus, The equivalent expression after taking a common factor is,

⇒ 2 (10 - 2x³)

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The required value of is m∠2 = 18°.

Given that,

First complementary adjacent angel m∠1 = 72°

We have to find,

Second complementary adjacent angle m∠2.

According to the question,

In geometry, the two angles are said to be complementary angles if they add up to 90 degrees.

Such as,  m∠1 + m∠2 = 90°.

Where, m∠1 = 72°

Putting the value of m∠1 = 72° in the equation,

72° + m∠2 = 90°

m∠2 = 90° - 72°

m∠2 = 18°

Hence, The required value of is  m∠2 = 18°.

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Answer:

m∠2 = 18°

Step-by-step explanation:

Complementary angles:  two angles that sum to 90°

⇒ m∠1 + m∠2 = 90°

⇒ 72° + m∠2 = 90°

⇒ m∠2 = 90° - 72°

⇒ m∠2 = 18°

A change in a population that is not related strictly to the size of the population can be described as a change in the demographic makeup of the population. This refers to changes in the characteristics of individuals within the population, such as age, gender, education level, and ethnicity.

For example, if a population experiences an influx of young adults, this would represent a change in the demographic makeup of the population, even if the overall size of the population remains the same.

Other factors that can contribute to a change in the population's makeup include migration patterns, changes in birth rates and mortality rates, and shifts in cultural or social norms. These changes can have significant impacts on a population, affecting everything from economic growth to social dynamics. Understanding demographic changes is therefore critical for policymakers and researchers seeking to address issues such as inequality, public health, and urban planning. By analyzing population trends and anticipating future changes, we can better prepare for the challenges and opportunities that lie ahead.

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Solution:

Note that:

Converting the time (minutes to seconds) for Vaimiti to reach school:

Converting the time (minutes to seconds) for Jabril to reach school:

Finding the distance of Vaimiti:

Important: The distance will be in meters since the speed units is meters/seconds.

Finding the distance of Jabril:

Important: The distance will be in meters since the speed units is meters/seconds.

This can lead to two possible solutions:

Possible solution #1:

Finding the difference between the two distances:

Possible solution #2:

The difference between the distances they walked is that Jabril walked faster than Vaimiti, but Vaimiti reached school earlier than Jabril because the walking distance for Vaimiti is less than the walking distance for Jabril.

Hoped this helped!

To solve this we first of all need to find the distances travelled by both Vaimiti and Jabril and then we will find their difference...

Let's start solving ~

:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:

\( \tt \leadsto \: Distance = Speed × Time\)

\( \sf \leadsto \: Distance = 1.1 \times 1500\)

\( \boxed{ \rm\multimap \: Distance = 1650 \: m}\)

\(\red{ \rule{35pt}{2pt}} \orange{ \rule{35pt}{2pt}} \color{yellow}{ \rule{35pt} {2pt}} \green{ \rule{35pt} {2pt}} \blue{ \rule{35pt} {2pt}} \purple{ \rule{35pt} {2pt}}\)

\( \tt \leadsto \: Distance = Speed × Time\)

Time taken by her = 30 minutes = 30×60 = 1800 seconds

\( \sf \leadsto \: Distance = 1.3\times 1800\)

\( \boxed{ \rm\multimap \: Distance = 2340 \: m}\)

\(\rule{300pt}{3pt}\)

\( \bf\nRightarrow \: Difference = 2340 - 1650\)

\( \bf \nRightarrow \: Difference = 690 \: m\)

➪ Therefore, The difference between distance travelled by them is 690 meter...~

dz/dt for the given function z = sin(x)cos(y), where x = t and y = 2/t, is equal to cos(t)cos(2/t) + 2sin(t)sin(2/t)/\(t^{2}\)

To find dz/dt using the chain rule, we need to differentiate z with respect to x and y separately, and then multiply the derivatives by the corresponding derivatives of x and y with respect to t. Given z = sin(x)cos(y), where x = t and y = 2/t, let's calculate dz/dt.

First, differentiate function z with respect to x:

∂z/∂x = cos(x)cos(y)

Next, differentiate z with respect to y:

∂z/∂y = -sin(x)sin(y)

Now, differentiate x = t with respect to t:

dx/dt = 1

Differentiate y = 2/t with respect to t:

dy/dt = -2/\(t^{2}\)

Now, applying the chain rule, we have:

dz/dt = (∂z/∂x)(dx/dt) + (∂z/∂y)(dy/dt)

= cos(x)cos(y)(1) + (-sin(x)sin(y))(-2/\(t^{2}\))

= cos(t)cos(2/t) + 2sin(t)sin(2/t)/\(t^{2}\)

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Answer:

19 and 157

Step-by-step explanation:

Answer:

10.50x + 15 = y

Step-by-step explanation:

x = amount of hours spent babysitting.

y = total amount of money.

Answer: 1-7/8.

Step-by-step explanation;

Division of fractions is equivalent to multiplication by the reciprocal of the second fraction:  5/8 / 1/3 = 5/8 * 3/1.

Once rearranged, multiply all of the numerators by each other. Do the same with the denominators and form a new fraction with these values:  15/8.

15 ÷ 8 = 1R7, therefore:  1-7/8.

The required, 15/8, is the simplest form. It cannot be further reduced since the numerator (15) and the denominator (8) have no common factors other than 1.

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by swapping the numerator and denominator. Let's calculate the division:

(5/8) ÷ (1/3)

Find the reciprocal of the second fraction:

Reciprocal of (1/3) = 3/1 = 3

Now, multiply the first fraction by the reciprocal of the second fraction:

(5/8) * 3 = (5 * 3) / 8 = 15 / 8

So, the answer to 5/8 divided by 1/3 in simplest form is 15/8.

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Answer:

D.

Step-by-step explanation:

\(\frac{-x}{4} \leq 2\) multiply both sides by 4, that way we will simplify the fraction

-x \(\leq\) 8 and we need to multiply this by -1

-8 \(\leq\) x the graph that represents this inequality is given in D.

Answer:

b

Step-by-step explanation:

hope this helps

The correct option is option (b). The percent overall error rate for the given confusion matrix is approximately 37.5%.

In the confusion matrix, the diagonal elements represent the correct predictions, while the off-diagonal elements represent the incorrect predictions. The overall error rate is calculated by summing up the incorrect predictions and dividing it by the total number of predictions.

In this case, the total number of predictions is the sum of all the elements in the confusion matrix, which is 80 + 100 + 20 + 120 = 320.

The total number of incorrect predictions is the sum of the off-diagonal elements, which is 100 + 20 = 120.

The percent overall error rate is then calculated by dividing the total number of incorrect predictions by the total number of predictions and multiplying by 100:

(120 / 320) * 100 = 37.5%.

Therefore, the percent overall error rate is approximately 37.5%, which corresponds to option b.

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The range of computer-generated random numbers is

[0, 1)

[–8, 8]

[–8, 0)

[1, 8]

The confusion matrix for a classification method with Class 0 and Class 1 is given below. What is the percent overall error rate?

confusion matrix

actual/predicted            0                1

          0                          80            100

           1                          20            120

\(a. \( 45.67 \% \)\\b. \( 37.50 \% \)\\ c. \( 55.82 \% \)\\ d. \( 38.70 \% \\)

If 600 pounds of the material are initially put into the vault, then 252.3784 pounds will be left after 100 years.

The given function is

A=A(0)e ^{−0.00866x}

, where x is the number of years since the material was put into the vault.

If 600 pounds of the material are initially put into the vault, then we have to find how many pounds will be left after 100 years.

The function is A=A(0)e ^{−0.00866x}.

where A(0) is initial material in pounds i.e. A(0)=600 and x is the number of years i.e. x=100. So

A = 600*e ^{−0.00866*100}

A = 600*e ^{−0.866}

A = 600*0.4206

A = 252.3784

Hence, if 600 pounds of the material are initially put into the vault, then 252.3784 pounds will be left after 100 years.

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The right question is:

Solve the problem. The function

A=A(0)e ^{−0.00866x}

models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 600 pounds of the material are initially put into the vault, how many pounds will be left after 100 years?

The equilibrium wage rate as a function of labor demand N is w = z, and the firm's profit π = 0.

a. To find the equilibrium wage as a function of labor demand N, we need to maximize the profit of the firm while taking into account the utility function of the consumer.

The firm's profit function is given by π = zN - wN, where w represents the wage rate.

To maximize the firm's profit, we take the derivative of the profit function with respect to N and set it equal to zero:

dπ/dN = z - w = 0

This implies that the equilibrium wage rate w is equal to z.

Therefore, the equilibrium wage as a function of labor demand N is simply w = z.

b. The firm's profit π is given by π = zN - wN, where w represents the wage rate. In this case, we have already established that the equilibrium wage rate is w = z.

Substituting w = z into the profit function, we have:

π = zN - zN = 0

Therefore, the firm's profit π is zero.

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A regular polygon is a polygon with all sides and angles congruent. It exhibits symmetry and uniformity in its sides and angles, creating a visually appealing shape.

A polygon with all sides and angles congruent is called a regular polygon. In a regular polygon, all sides have the same length, and all angles have the same measure. This uniformity in the lengths and angles of the polygon's sides and angles gives it a symmetrical and balanced appearance.

Regular polygons are named based on the number of sides they have. Some common examples include the equilateral triangle (3 sides), square (4 sides), pentagon (5 sides), hexagon (6 sides), and so on. The names of regular polygons are derived from Greek or Latin numerical prefixes.

In a regular polygon, each interior angle has the same measure, which can be calculated using the formula:

Interior angle measure = (n-2) * 180 / n

Where n represents the number of sides of the polygon.

The sum of the interior angles of any polygon is given by the formula:

Sum of interior angles = (n-2) * 180 degrees

Regular polygons have several interesting properties. For instance, the

exterior angles of a regular polygon sum up to 360 degrees, and the measure of each exterior angle can be calculated by dividing 360 degrees by the number of sides.

Regular polygons often possess symmetrical properties and are aesthetically pleasing. They are commonly used in design, architecture, and various mathematical applications.

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Answer:70,470 dollars

Step-by-step explanation:

Answer:

$3 per square foot

Step-by-step explanation:

Find the area of all the surfaces around the rectangle, by multiplying length times width of each side.

Then add all of the answers together and divide by how much the wallpaper cost by square foot, which would be 522/174 which equals 3.

Answer:

36.66 minutes have gone by

Step-by-step explanation:

x/78 = 47/100 cross multiply

x times 100 = 78 times 47

x100 = 3666

/100    /100

x = 36.66

Answer:

Step-by-step explanation:

80%

Answer: No she'll need atlease 9 dollars

Step-by-step explanation:

48.95 x 18% is 8.811 which is greater than

The correct order of water cycle is Water evaporates from a lake. -> Water vapor condenses to form clouds. -> Water falls as rain, snow, and sleet. -> Water joins streams or forms groundwater. -> Water flows down mountains and hills.

The water cycle is a continuous process that describes how water evaporates from the surface of the earth, rises into the atmosphere, condenses into clouds, falls back to earth as precipitation, and then repeats the cycle.

The first step in the water cycle is evaporation, which occurs when water is heated by the sun and turns into water vapor. The water vapor then rises into the atmosphere, where it cools and condenses into clouds.

As the clouds continue to form, they eventually become heavy enough to release the water back to earth in the form of precipitation, such as rain, snow, or sleet. Some of this water flows down mountains and hills, eventually joining streams or forming groundwater.

The water that flows down mountains and hills eventually makes its way back to the oceans, where the cycle begins again. The water cycle is an essential process that helps to regulate the earth's climate and distribute water across the planet.

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Answer:1/4

Step-by-step explanation:

Answer:

1/4th

Step-by-step explanation:

The proababilities are: i) P(Aᶜ) = 0.6, ii) P(Bᶜ) = 0.4

iii) Probability that exactly one of the events A, B occurs = 0.7

Let A and B be any two disjoint events such that P(A) = 0.4 and P(A ∪ B) = 0.7. We need to find the following probabilities:

i) P(Aᶜ): This is the probability of the complement of event A, which represents the probability of not A occurring. Since A and B are disjoint, Aᶜ and B are mutually exclusive and their union covers the entire sample space.

Therefore, P(Aᶜ) = P(B) = 1 - P(A) = 1 - 0.4 = 0.6.

ii) P(Bᶜ): This is the probability of the complement of event B, which represents the probability of not B occurring. Since A and B are disjoint, Bᶜ and A are mutually exclusive and their union covers the entire sample space.

Therefore, P(Bᶜ) = P(A) = 0.4.

iii) Probability that exactly one of the events A, B occurs: This can be calculated by subtracting the probability of both events occurring (P(A ∩ B)) from the probability of their union (P(A ∪ B)).

Since A and B are disjoint, P(A ∩ B) = 0.

Therefore, the probability that exactly one of the events A, B occurs is P(A ∪ B) - P(A ∩ B) = P(A ∪ B) = 0.7.

To summarize:

i) P(Aᶜ) = 0.6

ii) P(Bᶜ) = 0.4

iii) Probability that exactly one of the events A, B occurs = 0.7

Note: The provided values of P(A), P(A ∪ B), and the disjoint nature of A and B are used to derive the above probabilities.

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Answer:

3/6 or 1/2

Step-by-step explanation:

⇒ out of 6 blocks 3 are shaded so, it will be 3/6

⇒ out of 6 blocks 3 are shaded (3 is half of 6) so, it will be 1/2

Answer:

Answer: 3/6 or 1/2

Step-by-step explanation:

Basically there are six bars and we are to find the fractional part of the blue bars. The fractional part of the blue bars is 3/6 or 1/2.

Answer:

the answer is 20

Step-by-step explanation:

simple multipication

Answer:

b < 6

Step-by-step explanation:

\(2(3b-2)<4b+8\)

\(6b-4<4b+8\)

\(6b-4b<8+4\)

\(2b<12\)

\(b<\frac{12}{2}\)

\(b<6\)

Hope this helps