The populations of Siberian tigers and narwhals since 199019901990 are represented by the following tables

Answer: 17 m/s

Step-by-step explanation:  

Answer:

see attached

Step-by-step explanation:

For the given case the Null hypothesis is The mean mpg of the 91 cars tested is equal to the manufacturer's mpg rating of 55.7 and the  Alternative hypothesis is The mean mpg of the 91 cars tested is less than the manufacturer's mpg rating of 55.7.

In order to determine whether the cars underperform the manufacturer's mpg rating, the independent testing firm would need to perform a hypothesis test. To do this, they would need to compare their sample mean of 55.2 mpg with the manufacturer's mpg rating of 55.7. They would also need to know the standard deviation of the sample, which is 3.24.

The independent testing firm would then calculate the z-score by subtracting the manufacturer's rating from the sample mean, and dividing it by the standard deviation. If the z-score is greater than the critical value for a 0.05 level of significance, then there is sufficient evidence to reject the null hypothesis.

In this case, the z-score is -1.51. Since the critical value for a 0.05 level of significance is 1.96, the z-score is less than the critical value. Therefore, there is not sufficient evidence to reject the null hypothesis, and we cannot conclude that the cars underperform the manufacturer's mpg rating.

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Answer:

decimal form is limited of 3 numbers after the point only.

so it will be 1.45

I hope I help you in this ans and tq.

No, that i not a ucce, the electric bill need to be  amount $1530 or le to be conidered a ucce.

To calculate the electric bill after the 11% decrease, simply multiply the current electric bill by 0.89, which is 1-11%. This will give you the new electric bill.

$1700 x 0.89 = $1530

Therefore, if the company's electric bill for next month is amount $1530 or less, then that would be considered a success.

The company must reduce their electric bill to $1530 or less in order to be considered successful in decreasing their energy usage by 11%.

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Sum to the correct number of significant figures is 6.43

Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value. We start counting significant figures at the first non-zero digit.

Significant figures are used to establish the number which is presented in the form of digits. These digits carry a meaningful representation of numbers. The term significant digits are also used often instead of figures. We can identify the number of significant digits by counting all the values starting from the 1st non-zero digit located on the left. For example, 12.45 has four significant digits.

Since the least precise measurement 1.67 is correct to only two decimal place.

  2.0800

+ 2.677

+  1.67          

  6.427

Therefore, the final result should be rounded off to 6.43 where Significant Figures: 3, Decimals: 2.

The arithmetic addition of given numbers to the correct number of significant figures is 6.43.

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An equation of a circle which represents the picture include the following: A. (x)² + (y)² = 25.

In Mathematics, the standard form of the equation of a circle is represented by this mathematical expression;

(x - h)² + (y - k)² = r²  

Where:

From the information provided above, we have the following points on this circle:

Substituting the given points into the equation of a circle, we have the following;

(x - 0)² + (y - 0)² = 5²  

(x)² + (y)² = 25.

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All of the statements that are true include the following:

II. The hypothesis was supported with the results of the experiment.

III. It can be concluded that every time 8 wraps are added to the nail, the total number of paper clips lifted doubles.

Therefore, the correct answer option is: A. II and III only.

In Science, a hypothesis is primarily considered to be a tentative or an educated guess and it can be defined as a testable explanation for an observation, result, or a specific experimentation (scientific) problem, especially through the use of the "if . . . then . . . because" format.

Based on the information provided about this experiment, we can reasonably infer and logically deduce that the hypothesis developed about the steel nail is true because when eight (8) wraps of an insulated copper wire are added to the steel nail, the total number of paper clips that would be lifted is twice as many paper clips.

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She could only solve 24 * 25 if the array has 24 rows and 25 columns or vice versa

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

Product expression = 24 * 25

An array is a set of items that has rows and columns

The array is not given

However, the true statement is that: for Rosie to evaluate the expression using an array, then the array must be a 24 x 25 array or 25 x 24 array

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Answer:

only one triangle can be formed ...

We can write the coordinates after reflection as -

A (x₁, y₁) → A" (x₁, - y₁)

B (x₂, y₂) → B" (x₂, - y₂)

C (x₃, y₃) → C" (x₃, - y₃)

Given is that to describe a sequence of transformation that maps triangle ΔABC onto triangle ΔA”B”C” a student starts with a reflection over x - axis.

Assume the coordinates of a triangle are -

A (x₁, y₁)

B (x₂, y₂)

C (x₃, y₃)

So after the reflection over the {x} axis, we can write the coordinates as -

A" (x₁, - y₁)

B" (x₂, - y₂)

C" (x₃, - y₃)

Therefore, we can write the coordinates after reflection as -

A (x₁, y₁) → A" (x₁, - y₁)

B (x₂, y₂) → B" (x₂, - y₂)

C (x₃, y₃) → C" (x₃, - y₃)

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One technique to write numbers such that you can see the mathematical significance of each individual digit is in expanded form or expanded notation. So the expanded form of (3x-5)³ is 27x³-135x²+225x-125.

One technique to write numbers such that you can see the mathematical significance of each individual digit is in expanded form or expanded notation.

It is also possible to create a mathematical expression using integers that have been divided into distinct place values and decimal places.

5,000 + 300 + 20 + 5 = 5,325 is the expanded notation for the number.

Expanded form of the given expression.

1) We can expand the given term by the direct formula of the algebra

(A-B)³ = A³-B³-3AB(A-B)2)

We have (3x-5)³on comparing with the formula:

A = 3x

B = 5

(3x-5)³

(3x)³-5³-3×3x×5(3x-5)

27x³-125-45x(3x-5)  27x³-125-135x²+225x

So the expanded form of (3x-5)³ is 27x³-135x²+225x-125.

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The slope of the relationship is equal to; C. 4.

In Mathematics, the slope of any straight line can be calculated by using this mathematical expression;

Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

From the information provided above, we have the following data points on the line:

Substituting the given points into the slope formula, we have;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (-9 + 13)/(-1 - (-2))

Slope (m) = 4/1

Slope (m) = 4

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Answer:

Sal previously earned $61640.

Answer:

$62,000.00

Step-by-step explanation:

x + .08x = 66960  Combine like terms

1.08 x = 66960  Divide both sides by 1.08

[tex]\frac{1.08x}{1.08}[/tex] = [tex]\frac{66960}{1.08}[/tex]

x = 62000

Answer:

x=−3⋅−6+4=x=22

Step-by-step explanation:

Exercise can be beneficial for academic performance in a variety of ways.

Improved cardiovascular health, for example, can lead to improved blood flow to the brain, providing a better environment for learning and memory formation. Exercise can also improve mental health, reduce stress, and increase energy levels, helping to better prepare for tests and exams. Finally, exercise can help to improve concentration, focus, and overall cognitive function.

The formula for calculating the potential benefits of exercise on academic performance is:

Academic Performance = Exercise + Improved Cardiovascular Health + Mental Health + Stress Reduction + Energy + Concentration + Focus + Cognitive Function

By increasing the amount of exercise, the individual can increase their academic performance. This is done by improving cardiovascular health, mental health, stress levels, energy, concentration, focus, and cognitive function. All of these factors play a role in academic performance, and increasing any one of them can lead to an overall improvement in academic performance.

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To find the balance of the account after 3 years, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where A is the final amount, P is the initial principal, r is the interest rate, n is the number of times the interest is compounded per year, and t is the number of years.

In this case, the initial principal is $2,600, the interest rate is 4.2% (expressed as a decimal), the number of times the interest is compounded per year is 12 (monthly), and the number of years is 3.

So, we can plug these values into the formula:

A = 2600(1 + 0.042/12)^(12*3)

A = 2600(1.0035)^36

A = 2600 * 3.876

A = 10,049.6

The balance of the account after 3 years is $10,049.6.

Answer:

If you get 7 tokens a minute and you work for 9 hours, or 540 minutes, then you would have:

7 tokens/minute * 540 minutes = 3780 tokens

You would have 3780 tokens in total.

Answer:

3,780

Step-by-step explanation:

7* 540= 3780

because you get 7 every minute and there are 540 minutes

The measure of the smallest possible sector angle possible is 8°.

Let [tex]$a_1$[/tex] be the first term of the arithmetic progression and [tex]$a_{12}$[/tex] be the last term of the arithmetic progression.

From the formula of the sum of an arithmetic progression, we have -

[tex]$12*\frac{a_1+a_{12}}{2}=360$[/tex]

simplifying we get,

[tex]$a_1 + a_{12} = 60$[/tex]

[tex]$a_{12}$[/tex]  is the largest term of the progression and it can also be expressed as-

[tex]a_{12} = $a_1+11d$[/tex]

where d is a common difference.

Since each angle measure must be an integer, d should also be an integer.

[tex]$a_{12}-a_1=a_1+11d-a_1=11d$[/tex]

Since d is an integer, the difference between the first and last terms, 11d, must be divisible by 11.

Since the total difference should be less than 60, let's start checking multiples of 11 less than 60 for the total difference between [tex]$a_1$[/tex] and [tex]$a_{12}$[/tex].

Let us take the largest multiple because the maximum difference will give us the minimum value of the first term.

If the difference is 55, [tex]$a_1=\frac{60-55}{2}=2.5$[/tex], is not an integer.

If the difference is 44, [tex]$a_1=\frac{60-44}{2}= 8[/tex] . It satisfies the given conditions.

Hence, the measure of the smallest possible sector angle possible = 8°.

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Answer: An inequality for the expected population, p, next year can be written using the information provided. Since the population is expected to grow between 5% and 8% per year, we can represent that as a range of growth rates: 0.05 <= growth rate <= 0.08

To find the expected population next year, we can use the formula:

p = population * (1 + growth rate)

where "population" is the current population of 50,000 and "growth rate" is the percentage increase. Since the growth rate is expected to be between 0.05 and 0.08, we can write the inequality as:

50,000 * (1 + 0.05) <= p <= 50,000 * (1 + 0.08)

This inequality represents the expected range of population next year, with the lower bound being the population if it grows by 5% and the upper bound being the population if it grows by 8%.

Simplifying the inequality:

52,500 <= p <= 54,000

So the expected population next year, p, is between 52,500 and 54,000.

Step-by-step explanation:

The probability that the mean number of raisins in the Happy Trail Mix is more than the mean number of raisins in the generic mix is 9.7%.

To solve this problem, we need to use the central limit theorem, which states that the distribution of the sample means approaches a normal distribution as the sample size increases. With a sample size of 17, we can approximate the distribution of the sample means as normal.

Let's call the mean of the Happy Trail Mix sample x and the mean of the generic mix sample y.

Using the formula for the mean of a normal distribution, we can find the mean of x and y:

μx = μ = 33.6

μy = μ = 28.8

Using the formula for the standard deviation of the sample mean, we can find the standard deviation of x and y:

σx = σ/√n = 8.4/√17 = 2.04

σy = σ/√n = 12.7/√17 = 3.08

Now that we have the mean and standard deviation of x and y, we can use a normal distribution calculator or a z-score table to find the probability that x > y.

The z-score is given by:

z = (x - y - μ)/σ = (33.6 - 28.8)/(√(2.04^2 + 3.08^2)) = 1.30

Using a standard normal table, we find that the probability of a z-score being greater than 1.30 is 0.097, or 9.7%.

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The required volume of the prism when area of cross section of the prism and the length of the prism are given is calculated to be 750 cm³.

Area of cross section of the prism = 30 cm²

Length of the prism = 25 cm

Volume of the prism = ?

A prism is a polyhedron consisting of an n-sided polygon base. The relation between volume, base area and height of the prism is mathematically given as,

V = B H

where, B is Base area

H is Height of prism

V = 30 × 25 = 750 cm³

Thus, the required volume of the prism when area of cross section of the prism and the length of the prism are given is calculated to be 750 cm³.

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Answer:

x = 11

Step-by-step explanation:

We know that the answer we will get will be the same as BD because BD and AC are congrudent, meaning that they are exactly equal shape and size. To find 'x' our equation would be: 29 = 3x - 4. To figure this out we just add 29 and 4 which gives us 33 and then divide that by 3 which gives us 11 (our answer)

Check the picture below.

Perimeter (P) = AB + BC + CD + DA.

The perimeter of a trapezoid is the sum of the lengths of each side of the trapezoid. A trapezoid is a quadrilateral that has two sides parallel to each other and two non-parallel sides termed as bases and legs respectively. Let us learn how to calculate the perimeter of the trapezoid in this article.

perimeter of the trapezoid=sum of 4 side

                                            =AB+BC+CD+DA

Perimeter (P) = AB + BC + CD + DA.

It can also be written as a sum of lengths of parallel sides and the sum of lengths of non-parallel sides where AB and CD are the parallel sides and AD and BC are the non-parallel sides.

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Answer: Infinite, or unsolvable

Step-by-step explanation:

6x + 12 = 2(3x+6)

6x + 12 = 6x + 12 <-- opening up the bracket

Because both sides of the equation are the same, the answer is either that there are an infinite amount of solutions for x, or that the equation is unsolvable.

If on Wednesday evening sonto spent one ½ doing doing homework 45 minutes doing housework 1 hour visiting friends and 1 hour ½ watching television .This  information in a ratio is: 2: 3 : 4 :6.

We need to first analyze the details  before determining the ratio.

​1 hour = 60 minutes

1/2 h = 30 minutes

1 1/2 = 90 minutes

So,

30 : 45 = 60 :90

Reduce the above minutes  to ratio

2: 3 : 4 :6

Therefore the ratio of the information is 2: 3 : 4 :6.

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Answer:

only one solution

Step-by-step explanation:

4x - 8 = 3x + 13

x = 21

Hey there!

Given:

[tex]4x-8=3x+13[/tex]

Solution(s):

One Solution; [tex]x=21[/tex]

Hope this helps!