Which of the following best describes a point of symmetry?

Answer:

∞-9

Step-by-step explanation:

Given that of the new books the new books the new liberian ordered;

-1/3 are science

-2/5 are biography

Let s, b and f represent the fraction of science, biography and fiction of the new book.

substituting the values of s and b given;

The decimal point should be placed between digits 9 and 7 in the dividend. i.e the dividend becomes 269.7

Dividend = 26.97       [numerator]

Divisor = 6.3               [denominator]

If 26.97 ÷ 6.3 is written in long division form so that the divisor is written as a whole number, we have the following;

(i)First convert the divisor to a whole number by multiplying by 10 i.e

6.3 x 10 = 63

(ii) Since the divisor (denominator) has been multiplied by 10, to make sure the division expression stays the same, we need to multiply the dividend(numerator) too by 10. i.e

26.97 x 10 = 269.7

(iii) The division expression then becomes;

269.7 ÷ 63

Therefore, the decimal point should be placed between digits 9 and 7 in the dividend.

Answer:

Its not a perfect square

Step-by-step explanation:

To solve this problem, we will follow the steps below;

If length of the legs of the triangle are 4 inches and 6 inches, to find the length of the hypotenuse, we will simply use the formula from the hypotenuse triangle;

hypotenuse² = opposite² + adjacent²

                  = 4²  +  6²

                  = 16 + 36

hypotenuse² = 52

hypotenuse = √52

hypotenuse =7.2111025509.........

Therefore hypotenuse is not a rational number because the 52 is not a perfect square and thus √52 has an unending values

Beginning with the production of CSF in the lateral ventricles, the CSF moves into the third ventricle via the intraventricular foramen.

Cerebrospinal fluid is a white, transparent fluid that is filled in the cavity of brain and spinal cord.

The flow of CSF starts from choroid plexus, then it flows to the lateral ventricle, and to the interventricular foramen of Monro, the third ventricle.

Thus, the correct option is D, the CSF moves into the third ventricle via the intraventricular foramen.

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According to the given information the detection angle is 72.

An angle is formed anytime two straight lines and rays meet at a single terminal. The intersection of two points at such an angle is known as the vertex. The word "angle" comes from the Latin word "angulus," which meaning "corner."

Degrees are a measure representing circularity or rotation and are used to express angles. You would turn 360° in order to face back in the exact direction after completing a full revolution. As a result, a quarter-circle, or straight angle, is 90°, and a half-circle is 180°. The sum of any two or maybe more angles on the a straight line is 180°.

\(\begin{aligned}5\theta & =360^{\circ} \\\theta & =\frac{360^{\circ}}{6} \\& =72^{\circ}\end{aligned}\)

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The lab should budget for the next year's rat orders be $63,700.00.

The lab orders 100 rats a week for each of the 52 weeks in the year for experiments that the lab conducts.

The prices for 100 rats follow the given distribution:

Price ($): 10.00, 12.50 , 15.00

Probability: 0.35 0.40 0.25

Mean price per 100 rats can be calculated using the expected value formula,

μx = ∑ [ xi × P(xi) ]

where

μx = mean value,

xi = price,

P(xi) = probability of xi

Mean price per 100 rats:

μx = (10.00 × 0.35) + (12.50 × 0.40) + (15.00 × 0.25)

μx = 3.50 + 5.00 + 3.75

μx = $12.25

The mean price per 100 rats is $12.25.

Hence, the cost of 100 rats is $12.25.

Therefore, the lab should budget for the next year's rat orders:

$12.25 × 100 × 52

= $63,700.00

The lab should budget for the next year's rat orders be $63,700.00.

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Step-by-step explanation:

a = 2 + 3a + 8

a = 10 + 3a

a - 3a = 10

-2a = 10

a = -5

There are 50,000 odd five-digit counting numbers that can be formed by choosing digits from the set with repetition allowed.

To determine the number of odd five-digit counting numbers that can be formed by choosing digits from a set (with repetition allowed), we need to consider the restrictions and possibilities for each digit position.

1. The leftmost digit:

2. The remaining four digits:

To find the total number of odd five-digit counting numbers, we multiply the possibilities for each digit position:

Total number = (5 options for the leftmost digit) \(\times\) (10 options for each of the remaining four digits)

Total number = \(5 \times 10^4 = 50,000\)

Therefore, there are 50,000 odd five-digit counting numbers that can be formed by choosing digits from the set when repetition is allowed.

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Answer:

it's (1, 2)

Step-by-step explanation:

you just look at where the 2 lines cross

The rate of flow outward through the slant surface of the tetrahedron is 18e z + 9.

The rate of flow outward through the slant surface of the tetrahedron can be found using the divergence theorem. The divergence theorem states that the outward flux of a vector field through a closed surface is equal to the volume integral of the divergence of the vector field over the volume enclosed by the surface. In this case, we can use the divergence theorem to find the rate of flow without evaluating any integrals.
To begin, let's calculate the divergence of the given vector field ⟨ x e z , − y e z , z ⟩. The divergence of a vector field in three dimensions is defined as the sum of the partial derivatives of each component with respect to its corresponding variable. In this case, the divergence of the vector field is:
div(⟨ x e z , − y e z , z ⟩) = ∂/∂x (x e z) + ∂/∂y (-y e z) + ∂/∂z (z)
= e z + e z + 1
= 2e z + 1
Now, since the tetrahedron has only one face that is not parallel to any of the coordinate planes, we can consider this face as our closed surface. The outward flux through this surface is equal to the volume integral of the divergence of the vector field over the volume enclosed by the surface.
Since the vertices of the tetrahedron are at the origin and (3,0,0), (0,3,0), and (0,0,3), we can see that the tetrahedron is a regular tetrahedron with side length 3.
Therefore, the volume of the tetrahedron is (1/3) * (base area) * (height) = (1/3) * (3 * 3) * 3 = 9.
Now, the rate of flow outward through the slant surface can be calculated as the volume integral of the divergence of the vector field over the volume enclosed by the surface:
Rate of flow = (2e z + 1) * (volume of tetrahedron)
= (2e z + 1) * 9
= 18e z + 9
So, the rate of flow outward through the slant surface of the tetrahedron is 18e z + 9.

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Answer:

x=9

Step-by-step explanation:

5x - 5(3x +13)=0

5x - 3x - 13 - 5 = 0

2x -18= 0

x=18/2

x=9

Answer:

Step-by-step explanation:

Blue- x+10y-10z

Answer:

Q = 12 units

Step-by-step explanation:

Pythagoras’ Theorem

a² + b² = c²

(where a and b are the legs, and c is the hypotenuse, of a right triangle)

Given:

Substitute given values into the formula and solve for Q:

⇒ a² + b² = c²

⇒ 5² + Q² = 13²

⇒ 25 + Q² = 169

⇒ Q² = 169 - 25

⇒ Q² = 144

⇒ Q = √144

⇒ Q = 12 units

Answer:

Q = 12 units

Step-by-step explanation:

Answer:

\(2p^2\)

Step-by-step explanation:

Step 1: Apply the exponentiation property:

\((8p^6)^\frac{1}{3} = 8^\frac{1}{3} * (p^6)^\frac{1}{3}\)

Step 2: Simplify the cube root of 8:

The cube root of 8 is 2:

\(8^\frac{1}{3} =2\)

Step 3: Simplify the cube root of \((p^6)\):

The cube root of \((p^6)\) is \(p^\frac{6}{3} =p^2\)

Step 4: Combine the simplified terms:

\(2 * p^2\)

So, the simplified expression is \(2p^2\).

Answer: r=5

Step-by-step explanation:

Step-by-step explanation:

\(\sqrt{2} = 1,414213562 = 1,41\\\)     ( with calculator )

\(\sqrt{3} = 1,732050808 = 1,73\)     ( with calculator )

Sow , you need 2 irrationale numbers between 1,41 and 1,73

What is a irrationale number ?

Irrational number, any real number that cannot be expressed as the quotient of two integers. ... For example, there is no number among integers and fractions that equals the square root of 2.

An example : 1.234343 , \(\sqrt{9\\}\) , π ...

In the file you can find some more info.

Sow we can say 1,583909 and 1,683738 is a Irrationale number between

1,41 and 1,73 = between \(\sqrt{2}\) and \(\sqrt{3}\)

if there is any mistake , pls call me.

Regards The Gentlemen

-2.05 is the critical value for the left-tailed test .

What is critical z value?

The -1.96 and +1.96 standard deviations are the essential z-score values when adopting a 95 percent confidence level.

                               With a 95 percent confidence level, the uncorrected p-value is equal to 0.05.The critical value for a two-sided test is Z 1-/2, while for a one-sided test, it is Z 1.

                      You reject the null hypothesis if the absolute Z-value is higher than the crucial value. If not, you have not successfully ruled out the null hypothesis.

Given that,

α = 0.02.

left tailed test

Zα = 0.02 = -2.05

critical value = -2.05

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Answer:

(a) Maximax criterion: Order 200 books.

(b) Maximin criterion: Order 200 books.

(c) Equally likely criterion: Order 200 books.

(d) Criterion of realism with a = 0.7: Calculate the expected payoff based on the chosen value of a and select the corresponding option.

(e) Minimax regret criterion: Order 200 books.

Step-by-step explanation:

The maximax criterion involves selecting the option with the highest possible payoff. We will calculate the maximum payoff for each option and choose the one with the highest value.Payoff for ordering 50 books:

Revenue = 30 * 50 = $1500

Maximum payoff = $1500Payoff for ordering 100 books:

Revenue = 30 * 100 = $3000

Maximum payoff = $3000Payoff for ordering 150 books:

Revenue = 30 * 150 = $4500

Maximum payoff = $4500Payoff for ordering 200 books:

Revenue = 30 * 200 = $6000

Maximum payoff = $6000Based on the maximax criterion, Waldo should choose the option of ordering 200 books since it has the highest maximum payoff.(b) Maximin Criterion:

The maximin criterion involves selecting the option with the highest minimum payoff. We will calculate the minimum payoff for each option and choose the one with the highest value.Payoff for ordering 50 books:

Revenue = 30 * 50 - (20 * 50 - 4 * 50) = $900

Minimum payoff = $900Payoff for ordering 100 books:

Revenue = 30 * 100 - (20 * 100 - 4 * 100) = $1800

Minimum payoff = $1800Payoff for ordering 150 books:

Revenue = 30 * 150 - (20 * 150 - 4 * 150) = $2700

Minimum payoff = $2700Payoff for ordering 200 books:

Revenue = 30 * 200 - (20 * 200 - 4 * 200) = $3600

Minimum payoff = $3600Based on the maximin criterion, Waldo should choose the option of ordering 200 books since it has the highest minimum payoff.(c) Equally Likely Criterion:

The equally likely criterion assumes that each demand level is equally likely to occur. We will calculate the expected payoff for each option and choose the one with the highest value.Expected payoff for ordering 50 books:

Expected revenue = (30 * 50 + 4 * (50 - 50)) / 4 = $375

Expected payoff = $375Expected payoff for ordering 100 books:

Expected revenue = (30 * 100 + 4 * (50 - 100)) / 4 = $750

Expected payoff = $750Expected payoff for ordering 150 books:

Expected revenue = (30 * 150 + 4 * (50 - 150)) / 4 = $1125

Expected payoff = $1125Expected payoff for ordering 200 books:

Expected revenue = (30 * 200 + 4 * (50 - 200)) / 4 = $1500

Expected payoff = $1500Based on the equally likely criterion, Waldo should choose the option of ordering 200 books since it has the highest expected payoff.(d) Criterion of Realism with a = 0.7:

The criterion of realism involves assigning a weight (0 ≤ a ≤ 1) to the optimistic payoff and the remaining weight (1 - a) to the pessimistic payoff. We will calculate the expected payoff for each option using the given value of a and choose the one with the highest value.Expected payoff for ordering 50 books:

Expected revenue = a * (30 * 50) + (1 - a) * (30 * 50 - 20 * 50 + 4 * 50) = $450a

Expected payoff = $450aExpected payoff for ordering 100 books:

Expected revenue = a * (30 * 100) + (1 - a) * (30 * 100 - 20 * 100 + 4 * 100) = $900a

Expected payoff = $900aExpected payoff for ordering 150 books:

Expected revenue = a * (30 * 150) + (1 - a) * (30 * 150 - 20 * 150 + 4 * 150) = $1350a

Expected payoff = $1350aExpected payoff for ordering 200 books:

Expected revenue = a * (30 * 200) + (1 - a) * (30 * 200 - 20 * 200 + 4 * 200) = $1800a

Expected payoff = $1800aTo find the maximum expected payoff, we can compare the values of a * 450, a * 900, a * 1350, and a * 1800 for different values of a. The optimal value of a will determine the corresponding option.(e) Minimax Regret Criterion:

The minimax regret criterion involves calculating the regret for each option and selecting the one with the minimum regret. Regret represents the difference between the maximum possible payoff and the actual payoff.Regret for ordering 50 books:

Regret = 6000 - (30 * 50 - (20 * 50 - 4 * 50)) = $5250

Minimum regret = $5250Regret for ordering 100 books:

Regret = 6000 - (30 * 100 - (20 * 100 - 4 * 100)) = $4200

Minimum regret = $4200Regret for ordering 150 books:

Regret = 6000 - (30 * 150 - (20 * 150 - 4 * 150)) = $3150

Minimum regret = $3150Regret for ordering 200 books:

Regret = 6000 - (30 * 200 - (20 * 200 - 4 * 200)) = $2100

Minimum regret = $2100Based on the minimax regret criterion, Waldo should choose the option of ordering 200 books since it has the minimum regret.

Waldo Books is facing a decision theory problem. By different criteria, the decision to order books can change. By maximax, Waldo should order 200 books, by maximin, 50 books. By equally likely, realism, and minimax regret criteria, computations considering payoffs, optimism levels, and potential regrets are needed.

This is a "decision theory problem" in the field of business and economics. Let's calculate the profit from each option. Profit will be $10 for each book sold (revenue of $30 minus cost of $20) and a loss of $16 for each book not sold (cost of $20 minus resell value of $4).

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a. the population in 1790 was 3.93 million. b. the population in 1820 can be expressed as N = 3.93 x 1.03^t, where t is the number of years since 1790. c. the population of the United States in 1820 was approximately 31.12 million.

(a) To find the population in 1790, we plug in t = 0 into the given formula:

N = 3.93 x 1.03^0 = 3.93

Therefore, the population in 1790 was 3.93 million.

(b) To express the population in 1820 using functional notation, we plug in t = 30 into the given formula:

N = 3.93 x 1.03^30

Therefore, the population in 1820 can be expressed as N = 3.93 x 1.03^t, where t is the number of years since 1790.

(c) To calculate the value of the population in 1820, we plug in t = 30 into the formula and round to two decimal places:

N = 3.93 x 1.03^30 ≈ 31.12

Therefore, the population of the United States in 1820 was approximately 31.12 million.

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Answer:

4.5 inches to the nearest tenth

Step-by-step explanation:

V=4/3πr^3

Divide both sides by 4/3π:

r^3 =  V / 4/3π

r =  ∛ (V / 4/3 π)

When V = 371 inches:

r =  ∛ (371/ 4/3 π)

= 4.46 in

Answer:

Step-by-step explanation:

volume of sphere V = 4/3 π r³

where V = 371 in³

           π = 3.14

find: radius r

solution:

371 = 4 (3.14) r³

         3

simplify:

371 (3) = 4(3.14) r³

371 (3) =  r³

4(3.14)

r³ =  1113  

      12.56

r = \(\sqrt[3]{88.61}\)

r = 4.5 in. therefore, the answer is B.

Answer: 243

Step-by-step explanation:

To find f(g(9)), we need to first substitute g(9) into the function f(x), and then evaluate the resulting expression.

Given that g(x) = 3√x, we can replace x with 9 (since we're looking for g(9)) in the expression for g(x):

g(9) = 3√9

Simplifying the square root of 9, we get:

g(9) = 3 * 3

g(9) = 9

Now, we can substitute g(9) into the function f(x) = x^3/3, replacing x with 9:

f(g(9)) = (9)^3/3

Using the exponent rule for cube, we get:

f(g(9)) = 729/3

Simplifying the division, we get:

f(g(9)) = 243

So, the value of f(g(9)) is 243.

Step-by-step explanation:

Simply graph the two equations....the intersection of the two graphs is the solution

Answer:

49 grade 80 minutes

Step-by-step explanation:

Answer:

Use a model to find the sum of two fractions with the same denominator

Add fractions with a common denominator without a model

Add fractions with a common denominator that contain a variable h

Step-by-step explanation:

h

x/2, which is a contradiction. So, the statement is true.Let x = 1,

then x² + x + 41 = 43

which is a prime.

If we take x = 2,

then x² + x + 41 = 47

which is also a prime. But,

when x = 40,

then x² + x + 41 = 1681

which is not a prime.

So, the statement is false.

b) ∀x∃y(x + y = 0). For every x,

there exists y = -x,

such that x + y =

x - x = 0.

So, the statement is true.

c) Let x = 2,

y = 1.

Then x > 1 and y > 0,

but  \(y^x = 1^2\)

= 1 ≤ x.

So, the statement is false.

d) Let a = 6,

b = 3,

c = 4.

Then a divides bc, but a does not divide b or a does not divide c. So, the statement is false.

e) Let a = 2,

b = 5,

c = 3, and

d = 1.

Then a divides (b-c) and a divides (c-d), but a does not divide (b-d). So, the statement is false.

f) x² - x ≥ 0 can be written as x(x-1) ≥ 0. If x > 1,

then both x and x-1 are positive and hence their product is positive.

If 0 ≤ x < 1, then x is positive and x-1 is negative, so their product is negative.

But, the statement is true only for positive real numbers. So, the statement is true.

g) Subtracting x+1 on both sides, 2x - (x+1) > 0 or x > 1. So,

the statement is true only for x > 1.

h) For any positive real number x, choose y = x/2.

Then for any positive real number z, yz ≥ z.

So, the statement is true.

i) For any positive real number x,

choose y = x/2.

Then if y < x, 0 < x-y < x.

If y > x,

then y > x/2 > x-x/2

= x/2,

which is a contradiction. So, the statement is true.

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Since the two lines in the figure are parallel, due to interior angles theorem, it follows:

So the value of x is 45.

It is possible to design any statistical learning problem to minimize predicted loss. All data examples in problem 1 correspond to supervised learning.

What is supervised learning?

The use of labelled datasets distinguishes the machine learning strategy known as supervised learning. These datasets are intended to "supervise" or "train" algorithms to correctly classify data or forecast outcomes. Labeled inputs and outputs allow the model to monitor its precision and improve over time.

When using data mining, supervised learning may be divided into two categories: classification and regression.

Using an algorithm, classification issues correctly categories test data into distinct groups, such as distinguishing apples from oranges.

Another supervised learning technique that employs an algorithm to comprehend the link between dependent and independent variables is regression.

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Correct question:

What type of statistical learning do all data examples supervised or unsupervised?