what is the final elevation if a bird starts at 20 m in changes 16 m a butterfly starts at 20 M and changes -16 m a diver starts at 5m and changes -16 ma whale starts at -9 m and changes 11 ma fish starts at -9 m and changes -11 m

Answer:

7

Step-by-step explanation:

13 exceeds - 1 by - 1 + 13 = 12, then

- 5 + 12 = 7

Answer:

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

13 exceeds - 1 by - 1 + 13 = 12, then

- 5 + 12 = 7

A sample estimator is unbiased if, on average, it gives an estimate of the population parameter that is equal to the true value of the parameter. The correct option is (b) having an unbiased estimator.

An estimator is a statistical function used to estimate an unknown parameter of a population based on a sample of data. A sample estimator is unbiased if, the expected value of the estimator is equal to the true population parameter.

If a sample estimator overestimates the population parameter in some cases and underestimates it in others, the overestimations and underestimations may cancel each other out on average. In this case, the estimator is unbiased, meaning that it provides estimates that are, on average, neither too high nor too low, it means that the estimator does not systematically overestimate or underestimate the true population parameter. The correct answer is (b).

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From unit conversion, it is found the following results:

6km ≈ 3.73 mi

2.5 L≈ 0.66 gal

90 lb ≈ 40.82 kg

Units of measurement are part of our daily lives. There are different units for area, length, volume, mass, and others.  Because of this, it is important to know converting them.

For solving this question you need some information as:

1 km = 0.621371 mi ( unit for length and distance)

1 L = 0.2641722 gallons (unit for volume)

1 lb = 0.453592 kg (unit for mass)

Therefore,

           1 km --------  0.621371 mi

           6 km --------  x mi

           x= 6* 0.621371

           x=3.73 mi

Thus, 6km ≈ 3.73 mi.

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Answer: A

Step-by-step explanation:

If you plug in the numbers from the x column into the equation in the place of x, you can figure out the answer.

Example:    -10x - 15

                   -10(1) - 15 = -25

                   -10(2) - 15 = -35 and so on...

You're Welcome! :)

Answer:

la respuesta es capó la B

Step-by-step explanation:

xeos para rellenar ti dirección para saber cómo está buenardo que la mujer de mi celular no puedo consultar con ningún compañero

Answer:

70

Step-by-step explanation:

Step 1:

a² + b² = c²

Step 2:

56² + 42² = 4900

Step 3:

4900 ÷ 70 = 70

Answer:

70

Hope This Helps :)

Answer:

Step-by-step explanation:

Point D lies on the line, so it is invariant.

Point E is a distance of 4 units away from the line y=-1, so E is now (1, -1-4)=(1, -5).

By the same logic, F' is now (3, 0).

The image points of triangle reflected across the line y = -1 is D'(-1,-1) ,E'(1,-5) , F'(3, 0) .

The given point P is "reflected" in the mirror and appears on the other side of the line an equal distance it. Drag the point P to see this. The reflection of the point P over the line is by convention named P' (pronounced "P prime") and is called the "image" of point P.

According to the question

Triangle points given

D(-1,-1), E(1,3), F(3, -2)

and reflected across the line y = -1

As, we have to reflect from  y = -1 , there will be no change in x axis in image points only y axis will be change .

D(-1,-1)

x axis = -1

y axis = -1

x' axis = -1

y' axis = distance from -1 to -1 = 0

therefore,

y' axis = -1

D'(-1,-1)

E(1,3)

x axis = 1

y axis = 3

x' axis = 1

y' axis = distance from 3 to -1 = |3 -(-1 ) |= 4 unit

therefore, 4 unit form -1 in negative

y' axis = - 5

E'(1,-5)

F(3, -2)

x axis = 3

y axis = -2

x' axis = 3

y' axis = distance from -2 to -1 = |-2 -(-1 )| = 1 unit

therefore, 1 unit form -1 in positive

y' axis = 0

F'(3, 0)

Hence, the image points of triangle reflected across the line y = -1 is D'(-1,-1) ,E'(1,-5) , F'(3, 0) .

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To find the value of x, we need to use the fact that when two lines intersect, the sum of the adjacent angles formed is equal to 180 degrees.

In this case, the angle formed between lines s and t is 23 degrees, and the angle formed between lines r and s is 106 degrees. Let's denote the angle between lines t and r as x.

Using the information given, we can set up the equation:

(106 degrees) + (23 degrees) + x = 180 degrees

Combine the known values:

129 degrees + x = 180 degrees

To isolate x, subtract 129 degrees from both sides of the equation:

x = 180 degrees - 129 degrees

x = 51 degrees

Therefore, the value of x is 51 degrees.

In conclusion, the value of x, the adjacent angles formed between intersecting lines t and r, is 51 degrees.

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Therefore, the three consecutive odd integers are 17, 19, and 21.

An equation is a statement that shows the equality of two expressions, typically separated by an equal sign. An equation can contain variables, constants, coefficients, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. The goal of solving an equation is to find the value(s) of the variable(s) that satisfy the equality.

Here,

Let x be the first odd integer, then the second and third odd integers are x+2 and x+4, respectively, since the difference between consecutive odd integers is 2.

The sum of the three consecutive odd integers is 57, so we can write:

x + (x+2) + (x+4) = 57

Simplifying and solving for x, we get:

3x + 6 = 57

3x = 51

x = 17

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This system of equations has been placed in a matrix:

y = 650x + 175

y = 25,080 - 120x

The option is ( 32.34, 21,196)

A system of equations, also called a set of simultaneous equations or a system of equations in mathematics, is a finite set of equations for which we have found a general solution. Systems of equations can be classified in the same way as individual equations. Systems of equations are applied in our daily life in modeling problems where unknown quantities can be expressed as variables.

Solving a system of equations means finding the values ​​of the variables used in the system. Calculates the value of an unknown variable while balancing both equations. The main reason for solving a system of equations is to find the values ​​of the variables that satisfy the conditions of all given equations. This system of equations can have different types of solutions.

1. unique solution

2. no solution

3. infinite set of solutions

Now,

We can solve the given system by making the equations equal because

y = y .

The equations are y = 650x + 175 and y= 25,080 - 120x, which forms

   650x + 175 = 25,080 - 120x

⇒ 650x +120x = 25080- 175

⇒ 770x = 24905

⇒ x = 24905 / 770

⇒ x = 32.344

≈ 32.34

Using this value, we find the other one.

   y = 650x + 175

⇒ y = 650 × 32.34 + 175

⇒ y = 21021 + 175

⇒ y = 21196

Therefore, the solution of the system is (32.34 , 21,196).

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The best point estimate is 15 hours. The 95% confidence interval for the population mean is (14.71, 15.29).

The best point estimate of the population mean is the sample mean, which is 15 hours since it was stated in the problem that the average time spent by college students on computer gaming is 15 hours.

To calculate the 95% confidence interval for the population mean, we use the formula:

CI = \(\bar{X}\) ± z*(σ/√n)

where \(\bar{X}\) is the sample mean, z is the z-score corresponding to the desired level of confidence (in this case, 95% corresponds to a z-score of 1.96), σ is the population standard deviation (given as 3), and n is the sample size (given as 350).

Plugging in the values, we get:

CI = 15 ± 1.96*(3/√350)

Simplifying, we get:

CI = 15 ± 0.29

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Answer:

C basta Yan ang sagot HAHAHA dko mapicturan solution ko e

Step-by-step explanation:

Answer:

c 0.6

Step-by-step explanation:

lol

40% of $129.50 = $51.80

$129.50 - $51.80 = $77.70

Sale Price : $77.70

1) The correct option is B.) We cannot make any conclusions for the statement if a 90% confidence interval for the difference of means 1 – 2 contains all positive values, what can we conclude about the relationship between 1 and 2 at the 90% confidence level.

A confidence interval provides a range of plausible values for the population parameter (in this case, the difference of means). If the confidence interval contains all positive values, it suggests that the true difference of means could be positive.

However, it does not allow us to conclude that 1 is strictly greater than 2. The confidence interval gives us a range of plausible values, but it does not provide definitive information about the specific relationship between 1 and 2.

2) The correct option is A.) We can conclude that 1 < 2 for the statement if a 90% confidence interval for the difference of means 1 – 2 contains all negative values, what can we conclude about the relationship between 1 and 2 at the 90% confidence level.

If the 90% confidence interval for the difference of means 1 – 2 contains all negative values, it suggests that the true difference of means is likely to be negative.

Therefore, we can conclude, at the 90% confidence level, that 1 is statistically less than 2. However, we should note that this conclusion is based on the given confidence level and the assumption of the sampling method used to construct the confidence interval.

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I hope this answer would help

The radius of a cylinder is 4 inches and the height is 5 inches. The surface area is equal to the sum of the areas of all the faces of a solid.

A cylinder has two circular bases, and each circular base has an area of πr² square units, where r is the radius of the base. The lateral area of a cylinder is the area of the cylinder's curved surface, which is the height of the cylinder multiplied by the cylinder's base perimeter. It is given by the formula: 2πrh. The surface area of the cylinder is obtained by summing the lateral area and two times the area of the base. Hence, we have:

Surface area = 2πrh + 2πr²

Let us calculate the area of the two bases by plugging the given values into the formula.

Area of one base = πr²= π (4)²= 16π square inches

Therefore, the area of the two bases is 2 × 16π = 32π square inches. Thus, statement 2 is correct

Lateral area of a cylinderLateral area = 2πrh= 2 × π × 4 × 5= 40π square inches.

Thus, statement 3 is correct.

The total surface area of the cylinderTotal surface area = Lateral area + 2 × Area of base= 2πrh + 2 × πr²= 2πr(h + r)= 2π × 4(5 + 4)= 72π square inches.

Therefore, statement 5 is correct.

Therefore, the following statements are correct:Statement 2: The area of the two bases is 32π square inches.Statement 3: The lateral area is 40π square inches.Statement 5: The total surface area is 72π square inches are true.Therefore, the correct statements are 2, 3, and 5.

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The problem with Rodell's method for collecting data is that it may result in a biased sample.

Rodell is only polling the students on his football and basketball teams, which means the sample he collects is not representative of the entire student population at his school.

The favorite gaming app among the students on his teams may not be the same as the favorite gaming app among the broader student population.

To obtain a more accurate representation of the students' preferences, Rodell should aim for a random sample that includes students from various groups within the school, such as different grade levels or extracurricular activities.

This would help to minimize bias and ensure that the results reflect the overall preferences of the student body.

By solely relying on the football and basketball teams, Rodell's method limits the diversity of the sample, potentially leading to skewed results and an inaccurate conclusion about the favorite gaming app among all students at the school.

Therefore, Rodell's data collection method is flawed because it could lead to a biased sample, as it only includes students from his football and basketball teams.

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Answer:

16

Step-by-step explanation:

2 is the smallest number and 8 is the largest. To find range you have to subtract the smallest number from the largest. 18-2=16

Answer:

answer is D

Step-by-step explanation:

dy/dx = (1/(e^(x^2)+1)) * (e^(x^2) * 2x) + e*cos(x)

This is the derivative of the given function y with respect to x.

We want to find the derivative dy/dx of the function y = ln(e^(x^2)+1) + e*sin(x). To do this, we will apply the rules of differentiation.

First, we'll differentiate the function term-by-term. For the natural logarithm function, the derivative is (1/u) * du/dx, where u is the function inside the natural logarithm. In our case, u = e^(x^2) + 1.

The derivative of e^(x^2) is found by applying the chain rule, which gives us (e^(x^2) * 2x). The derivative of 1 is 0. Therefore, the derivative of u is (e^(x^2) * 2x). Now we can find the derivative of ln(u):

d[ln(u)]/dx = (1/(e^(x^2)+1)) * (e^(x^2) * 2x)

Next, we will differentiate e*sin(x). The derivative of e*sin(x) is found by applying the product rule. The derivative of e is e, and the derivative of sin(x) is cos(x). Applying the product rule, we have:

d[e*sin(x)]/dx = e*cos(x) + e*sin(x) * 0 = e*cos(x)

Now, adding the derivatives of both terms, we get:

dy/dx = (1/(e^(x^2)+1)) * (e^(x^2) * 2x) + e*cos(x)

This is the derivative of the given function y with respect to x.

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There are 5 full square and 6 triangles that are half squares.

      5 + (6)(1/2) = 5 + 3 = 8

You could also break this into smaller shapes (like a big triangle on the top and a smaller triangle and rectangle on the bottom and use area formulas to calculate the area.  But counting works well in this example.

Answer: 8

Step-by-step explanation:

First you split up this shape into two different shapes, a triangle and trapezoid

Put a line through the coordinates (-2,2) to  (-1,2); the top is a triangle and the other is a trapezoid

Area of the trapezoid is A = .5x (base1 + base2) x height

base1 of the trapezoid goes from -4 to -1 which is 3

base2 goes from -2 to -1 which is 1

height is 0 to 2 whcich is 2

A = .5 x (3+1) x 2 = 4

Now area of a triangle is A = .5 x base x height

the base goes from -2 to 2 which is 4

the height goes from 2 to 4 which is 2

A = .5 x (4) x (2) = 4

Area of the Trapezoid + Area of the Triangle = Total Area

4 + 4 = 8

The t-distribution value is -1.67 for the given mean samples of 35 and 45. Thus, option B is correct.

M₁ = 35

M₂ = 45

SM1-M2 = 6.00

The t-value or t-distribution formula is calculated from the sample mean which consists of real numbers. To calculate the t-value, the formula we need to use here is:

t = (M₁ - M₂) / SM1-M2

Substituting the given values into the formula:

t = (35 - 45) / 6.00

t = -10 / 6.00

t = -1.67

Therefore, we can conclude that the value of t is -1.67 for the samples given.

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The t-distribution value is -1.67 for the given mean samples of 35 and 45. Thus, option B is correct.

Given, M₁ = 35

M₂ = 45

SM1-M2 = 6.00

The t-value or t-distribution formula is calculated from the sample mean which consists of real numbers.

To calculate the t-value,

the formula we need to use here is:

t = (M₁ - M₂) / SM1-M2

Substituting the given values into the formula:

t = (35 - 45) / 6.00

t = -10 / 6.00

t = -1.67

Therefore, we can conclude that the value of t is -1.67 for the samples given.

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The risk factor is 1.8 and the Confidence level is (0.60, 2.85).

To calculate the relative risk (RR) and its 95% confidence interval for the participants reporting a reduction of symptoms in the experimental condition compared to the placebo condition, we can use the following formula:

RR = (a / b) / (c / d)

where a is the number of participants in the experimental group who reported a reduction of symptoms, b is the number of participants in the experimental group who did not report a reduction of symptoms, and c is the number of participants in the placebo group who reported a reduction of symptoms, and d is the number of participants in the placebo group who did not report a reduction of symptoms.

In this case, a = 38, b = 62, c = 21, and d = 79. So we have:

RR = (38 / 62) / (21 / 79) = 1.8

To calculate the 95% confidence interval for RR, we can use the following formula:

log(RR) ± 1.96 * √(1/a + 1/b + 1/c + 1/d)

Taking the antilogarithm of both sides of the inequality, we have:

RR- = exp(log(RR) - 1.96 * √(1/a + 1/b + 1/c + 1/d))

RR+ = exp(log(RR) + 1.96 * √(1/a + 1/b + 1/c + 1/d))

Substituting the values, we get:

RR- = exp(log(1.8) - 1.96 *√(1/38 + 1/62 + 1/21 + 1/79)) = 0.60

RR+ = exp(log(1.8) + 1.96 * √(1/38 + 1/62 + 1/21 + 1/79)) = 2.85

Therefore, the 95% confidence interval for RR is (0.60, 2.85).

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Answer:

x² + y² = 85

Step-by-step explanation:

Using the expansion

(x - y)² = x² + y² - 2xy , then

x² + y² - 2xy = (x - y)² ( add 2xy to both sides )

x² + y² = (x - y)² + 2xy ← substitute given values

          = 9² + 2(2)

          = 81 + 4

          = 85

The mean number of accidents that would be expected to be more than 7 accidents is 0.6554.

By dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined.

A statistical measurement known as the Z-score indicates how closely a value relates to the mean of a collection of values. The Z-score is calculated using standard deviations from the mean. When a data point's Z-score is 0, it means that it has the same score as the mean. One standard deviation from the mean would be indicated by a Z-score of 1.0.

Given that mean is 6.4 and the standard deviation is 1.5.

The z score is used to determine the accidents:

z = 7 - 6.4 / 1.5

z = 0.4

Using the table of normal distribution we have, P(x > 7 ) = P(z > 0.4) = 0.6554

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hello

to solve this question, we just have to follow thr instructions as it is

the answer to this question is 6t/s

Answer:

The area of the second triangle is 242 cm²

Step-by-step explanation:

In the similar triangles

∵ The length of a pair of corresponding sides of two similar ∆'s are

   3 cm and 11 cm

→ Find the ratio of the corresponding sides

∴ The ratio of their corresponding sides = \(\frac{3}{11}\)

∵ The area of the first ∆ is 18 cm²

→ Use the second rule above

∵ \(\frac{A1}{A2}\) = \((\frac{3}{11}) ^{2}\)

∵ A1 = 18 cm²

→ Substitute it in the ratio above

∴ \(\frac{18}{A2}\) = \(\frac{9}{121}\)

→ By using the cross multiplication

∵ A2 × 9 = 18 × 121

∴ 9A2 = 2178

→ Divide both sides by 9

∴ A2 = 242 cm²

∴ The area of the second triangle is 242 cm²

If Beatriz takes a simple random sample of 350 orders from the more than 5000 total to her store and finds. The probability that more than 12 percent of the sampled orders would have been returned is 0.02.

Mean = n * p

Mean = 350 * 0.09

Mean= 31.5

Standard deviation = √ p * (1 - p)/n

Standard deviation = √ 0.09 * 0.91/350

Standard deviation = 0.01529

Using the  normal distribution table

p>0.12

P(p>0.12) =0.02

Therefore the probability that more than 12 percent of the sampled orders would have been returned is 0.02.

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