what # is equal to √9

The type of sampling used in this scenario is B. Stratified sampling. Stratified sampling involves dividing the population into distinct subgroups or strata and then selecting samples from each subgroup.

In this case, Miranda divides her day into three parts: morning, afternoon, and evening. Each part of the day represents a stratum or subgroup.  Miranda measures her breathing rate at 4 randomly selected times during each part of the day. This means she is taking samples from each of the three strata (morning, afternoon, and evening) and collecting data from within those subgroups.

By using stratified sampling, Miranda ensures that her samples represent the different parts of her day in a proportional and systematic manner, allowing her to capture potential variations in her breathing rate throughout the day.

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Answer:

mee!!

Step-by-step explanation:

I decided to take 2 math classes at once and I'm ready to drop out

Answer:

everyone should be done with school around this time i chillin listenin to rod

Step-by-step explanation:

To find the number of each type of commercial playing, the simultaneous equations that will be entered into a graphing calculator are:

The total number of commercials played in an hour = 16

The complete minutes for the commercials = 13 minutes

If x = 30-second commercial and y = 60-second commercial, the simultaneous equations can be represented as follows:

30 seconds = 0.5 minutes

60 seconds = 1 minute

Equation 1: x + y = 16

Equation 2: 0.5x + y = 13

Solving the equations by substitution:

Equation 1 becomes x = 16 - y

Equation 2: 0.5(16 - y) + y = 13

8 - 0.5y + y = 13

0.5y = 5

y = 10

x = 16 - y

= 16 - 10

= 6

Check:

0.5(6) + 10 = 13

3 + 10 = 13

13 = 13

Thus, the simultaneous equations for the graphing calculator will be Options B and C.

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a) x + y = 13

b) x + y = 16

c) 0.5x + y = 13

d) 0.5x + y = 16

e) 0.5x + y = 29

Answer:

possible

Step-by-step explanation:

9. The solution is (x, y) = (4/3, -5/3).

10. The solution is (x, y) = (1, 2).

The coefficient matrix is:

| -1  5 |

|  1 -2 |

The determinant of the coefficient matrix is:

|-1  5 |      |-2  5 |

| 1 -2 |  = (-1)(-2) - (5)(1) = 3

The matrix formed by replacing the first column of the coefficient matrix with the constants on the right side of the equation is:

| 2  5 |

|-2 -2 |

The determinant of this matrix is:

| 2  5 |      | -2  5 |

|-2 -2 |  = (2)(-2) - (5)(-2) = -4 + 10 = 6

|-1  2 |

| 1 -2 |

The determinant of this matrix is:

|-1  2 |     | 1  2 |

| 1 -2 | = (-1)(-2) - (2)(1) = 2

Using Cramer's rule:

x = |2  5| / 3 = 4/3

   |-2 -2|

y = |-1 2| / 3 = -5/3

   |1 -2|

10.The coefficient matrix is:

| -5 -5 |

| -2 -4 |

The determinant of the coefficient matrix is:

|-5 -5 |      |-2 -5 |

|-2 -4 |  = (-5)(-4) - (-5)(-2) = -10

The matrix formed by replacing the first column of the coefficient matrix with the constants on the right side of the equation is:

| 25 -5 |

| 16 -4 |

The determinant of this matrix is:

| 25 -5 |     | 16 -5 |

| 16 -4 | = (25)(-4) - (-5)(16) = -100 + 80 = -20

|-5 25 |

|-4 16 |

The determinant of this matrix is:

|-5 25 |     |-4 25 |

|-4 16 | = (-5)(16) - (25)(-4) = -80 -(-100) = 20

Using Cramer's rule:

x = |-5 -5| / -10 = 1

   |-2 -4|

y = |-5 25| / -10 = 2

   |-4 16|

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Answer:

Step-by-step explanation:

so just use the slope of the equations    m = 3   and plug in your points

to the point-slope formula  

y-2=3(x-1)

y = 3x-3+2

y = 3x -1

now you have an equation that gives you a parallel line to the first,  but moved down by 2  :)

Answer:

Trinity can withdraw $25 from her bank account for 13 weeks.

Step-by-step explanation:

If she wants to have at least $200 by the end of summer you need to subtract that much from what she has now. Which would be $325.38. Now you have to divide that number into 25, which should give you the number of week that money would last. That number is 13.0152, you don't need all those extra numbers so just use 13. No to check you work multiply 25 and 13. You get 325.

Answer:

x-1=y or y+1=x

Step-by-step explanation:

I think thats right,

Answer:

Subtract 6 from both sides

Step-by-step explanation:

To determine the unit requirements for producing A and C from D and E, the problem provides a product structure and inventory information. The number of units of D needed to make one unit of A is not explicitly given. However, it can be inferred by analyzing the product structure and inventory quantities. The number of units of D needed to make one unit of C is also not directly specified. However, by examining the product structure, we can determine the relationship between C and D. Finally, to produce 10 units of A, the number of units of E required can be calculated based on the given inventory levels and the product structure.

a) the number of units of D required to make one unit of A is not explicitly stated. The given information provides a product structure that includes A, B, D, E, and C. To determine the unit requirements for A, it would be necessary to examine the specific relationship between A and D. However, without this information, the exact number of units of D needed for one unit of A cannot be determined.
b) similarly, the number of units of D required to make one unit of C is not explicitly given in the problem statement. To determine this relationship, the product structure needs to be examined more closely. The information provided suggests that C is connected to D through E. However, the exact quantity of D required to produce one unit of C cannot be determined without additional information.
c) To calculate the number of units of E needed to produce 10 units of A, we can analyze the given inventory levels and product structure. The problem states that there are 5 units of D available. To produce A, we require B and E. However, the number of units of B available is not specified. Considering the product structure, it is indicated that each unit of A requires 2 units of B and 2 units of E. Thus, to produce 10 units of A, we would need 20 units of B and 20 units of E. However, since the availability of B is unknown, the exact number of units of E needed cannot be determined with the given information.

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Answer:

(-3,6) (1,8) (2,10) and so on.

Hello!

1/6 ≈ 0.167

the answer is 0.167

The number of oranges that are expected to weigh more than 4 oz is:

1400 - (1400 × 0.0228)≈ 1368.

The mean weight of the oranges growing in an orchard is 8 oz and standard deviation is 2 oz, the distribution of the weight of oranges can be represented as normal distribution.

From the batch of 1400 oranges, the number of oranges is expected to weigh more than 4 oz can be found using the formula for the Z-score of a given data point.

\(z = (x - μ) / σ\)

Wherez is the Z-score of the given data point x is the data point

μ is the mean weight of the oranges

σ is the standard deviation

Now, let's plug in the given values.

\(z = (4 - 8) / 2= -2\)

The area under the standard normal distribution curve to the left of a Z-score of -2 can be found using the standard normal distribution table. It is 0.0228. This means that 0.0228 of the oranges in the batch are expected to weigh less than 4 oz.

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Answer:

WX ZX

Step-by-step explanation:

If you fold it at the line of symmitry then w and x are at the same point

The Z score that is equivalent to the raw score 92.5 is B. -1.25.

A Z score represents the number of standard deviations a raw score is from the mean in a normal distribution. To calculate the Z score, we use the formula: Z = (X - μ) / σ, where X is the raw score, μ is the mean, and σ is the standard deviation.

Given that the mean score is 100 and the standard deviation is 15, we can calculate the Z score for the raw score 92.5 as follows:

Z = (92.5 - 100) / 15

Z = -7.5 / 15

Z = -0.5

Therefore, the Z score that is equivalent to the raw score 92.5 is -0.5.

The Z score is a useful measure in statistics that allows us to standardize and compare data points across different distributions. It helps us understand the relative position of a data point within a distribution and determine how unusual or typical that data point is compared to others. By calculating the Z score, we can easily determine the percentage of data points that fall below or above a particular value in a normal distribution, which aids in making statistical inferences and drawing conclusions.

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The z-score would be most useful if you want to know how many standard deviations from the mean a single score in a data set falls. So, the answer to the given question is option B) Az score.

The z-score is a standard score that indicates how many standard deviations an observation is from the mean. A z-score expresses the difference between a measurement and the mean in units of standard deviation. It is calculated as follows: Z-score= (score – mean) / standard deviation

The z-score is frequently utilized in statistics as an index of the likelihood that a result will occur. It is often utilized to determine whether a value is significantly different from the average. It is also known as a standard score or a normal deviate.

The z-score indicates how many standard deviations an observation is from the mean. A positive z-score indicates that the measurement is above the mean, whereas a negative z-score indicates that the measurement is below the mean. A z-score of zero indicates that the score is equal to the mean.

Hence, the answer to the given question is option B) Az score.

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Answer:

y=x/2-3/4

y=3x

Step-by-step explanation:

(-10/252) x (1/0.9165) = 0.0175 rad/sec is the equation for theta/dt.

Angle theta in the displayed figure can be expressed as

Theta sin = 10/sin

The angle will change at the following rate:

(-10/x2)(dx/dt) = cos theta(theta/dt)

Now, when x equals 25 feet, we require d theta/dt.

The fishing line is reeled in at a rate of

dx/dt = -1 ft/sec.

Now, if x equals 25, then Cosine equals

[ (x2-100)]

Cosine equals [ (252-100)]/25 = 0.9165So,

(-10/x2)(dx/DT)(1/cos theta) = theta/DT

The formula for theta/it is (-10/252)x(1/0.9165) = 0.0175 rad/sec.

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Answer:

not equivalent to meteorologists ratio

Step-by-step explanation:

meteorologists ratio is

rainy days : sunny days = 2 : 5

last months weather is

rainy days : sunny days

= 10 : 20 ( divide both parts by LCM of 10 )

= 1 : 2 ← not equivalent to 2 : 5

Answer:

4   5

Step-by-step explanation:

I got it right here.

The factored form of (20x² – 12x) + (25x– 15) is (4x+ 5)( 5x- 3).

The process of breaking or decomposing an entity (such as a number, a matrix, or a polynomial) into a product of another entity, or factors, whose multiplication results in the original number, matrix, etc., is known as factorisation or factoring.

Given:

(20x² – 12x) + (25x– 15)

or, 4x(5x – 3) + 5(5x – 3)

or, (4x+ 5)( 5x- 3)

Hence, the factored form of (20x² – 12x) + (25x– 15) is (4x+ 5)( 5x- 3).

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The values of x and y in the similar right triangles are approximately calculated as: x ≈ 4.5; y ≈ 8.9.

The similar triangles are all right triangles, therefore we can apply the Pythagorean theorem which states that:

c² = a² + b², where c is the length of the longest side or hypotenuse of the right triangle and a and b are the other lengths of its legs.

Therefore, we have:

x² = 4² + 2²

x² = 16 + 4

x² = 20

x = √20

x ≈ 4.5

Also, using the Pythagorean theorem, we have:

(8 + 2)² = x² + y²

Substitute:

10² = 4.5² + y²

10² - 4.5² = y²

y² = 79.75

y = √79.75

y ≈ 8.9

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Answer:

B

Step-by-step explanation:

when dividing powers, you just subtract them so in this case subtract 6-4 which will be 2. so your answer is 11².

Answer:

Unit price 12.16 for 4.07 pounds is $2.99 per pound

Unit price 14.99 for 5.11 pounds is $2.93 per pound

The best deal is the 14.99 per 4.11 pounds

Step-by-step explanation:

Unit price 12.16/4.07 = 2.99 rounded to the nearest cent

Unit price 14.99/5.11 = 2.93 rounded to the nearest cent.

Answer:

1) $2.99

2)$2.93

The better buy is the 4.07 pound bag

Step-by-step explanation:

To find the unit price you find the cost per pound

$12.16 : 4.07

? : 1

4.07x = 12.16

x = 2.98771499

$2.99

$14.99 : 5.11

? : 1

5.11x = 14.99

x= 2.9334638

We can use the trigonometric ratios to solve for the unknown sides and angle:

Since A = π/3, we know that the opposite side (a) is 6 and the adjacent side (b) is unknown.

sin(A) = opposite/hypotenuse

sin(π/3) = 6/c

√3/2 = 6/c

c = 12/√3 = 4√3

cos(A) = adjacent/hypotenuse

cos(π/3) = b/4√3

1/2 = b/4√3

b = 2√3

Finally, we can use the Pythagorean theorem to find the remaining side:

a^2 + b^2 = c^2

6^2 + (2√3)^2 = (4√3)^2

36 + 12 = 48

√48 = 4√3

Therefore, the unknown sides are b = 2√3 and c = 4√3, and the unknown angle is B = π/2 - π/3 = π/6.

Option(A) i.e, 60 sq. feet is an answer.

The area of a rectangle is the number of unit squares that its perimeter includes. A rectangle's area is the area it takes up within the confines of its four sides. The area of a rectangle is determined by its dimensions. A rectangle's area is essentially equal to the product of its length and breadth. A shape's area is defined as the "space enclosed within the perimeter or the boundary" of the given shape.

The area of a rectangle can be calculated using the formula Area of rectangle = length × width.

Given, length = 15 feet, width = 4 feet

put these values in given formula,

Area of rectangle =  15 * 4

                              = 60 square feet

Hence, the answer is option(A)  i.e, 60 sq. feet.

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The statement that best proves that <XWY ≅ <ZYW is that two parallel lines are cut by a transversal, then the alternate interior angles are congruent

To determine the correct statement, we need to know the properties of a parallelogram.

These properties includes;

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So the surface area of the three boxes is 32 1/3 square feet.

Surface area is the total area that the surface of a three-dimensional object covers. It is measured in square units (such as square inches, square feet, or square meters). Surface area is an important concept in many areas of math and science, including geometry, architecture, physics, and engineering. It is used to calculate the amount of material needed to cover or construct an object, to determine heat transfer rates, and to analyze the strength and stability of structures.

Here,

To find the surface area of a rectangular prism, we need to find the area of each face and add them together. The rectangular prism has three boxes, so we need to find the surface area of each box and multiply by 3 to get the total surface area.

Face 1: The top and bottom faces are both rectangles with dimensions 5 feet by 1 1/2 feet. The area of each face is:

5 ft x 1 1/2 ft = 7.5 sq ft

Face 2: The front and back faces are both rectangles with dimensions 1 1/2 feet by 1 1/3 feet. The area of each face is:

1 1/2 ft x 1 1/3 ft = 2 sq ft

Face 3: The left and right faces are both rectangles with dimensions 5 feet by 1 1/3 feet. The area of each face is:

5 ft x 1 1/3 ft = 6 2/3 sq ft

To find the total surface area, we add up the areas of all three faces:

Total surface area = (7.5 sq ft x 2) + (2 sq ft x 2) + (6 2/3 sq ft x 2)

Total surface area = 15 sq ft + 4 sq ft + 13 1/3 sq ft

Total surface area = 32 1/3 sq ft

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Answer:

the answer is 32 1/3!

Step-by-step explanation:

I took the k12 4.12 unit test: Three-Dimensional Geometry -
Good luck with the rest of the test! ^_^
(This was my least favorite unit test of the whole semester)

The maximum purchase price per unit of the component that Ms. Alexander should negotiate with her supplier is $19.00, which is equal to the variable cost per unit to manufacture the part in-house.

In this scenario, Ms. Alexander needs to determine the maximum price per unit that she should be willing to pay the supplier for the component. She conducted a cost analysis and found that manufacturing the part in-house would require $450,000 in capital equipment and have a variable cost of $19.00 per unit.

Since there is no fixed cost associated with purchasing the component from the supplier, the maximum purchase price per unit should not exceed the variable cost per unit of manufacturing in-house. This ensures that the company does not incur additional costs by outsourcing the component.

Therefore, Ms. Alexander should negotiate a price with the supplier that is equal to or lower than the variable cost per unit, which is $19.00. By doing so, the company can avoid the initial capital investment and ongoing variable costs associated with in-house production, making it more cost-effective to purchase the component from the supplier.

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As per the given costs, 80 notebooks were sold at the student government fundraiser.

Let the number of notebooks sold be = N

Let the number of t-shirts sold be = T

Setting the equation, representing the total number of items sold

N + T = 90

or N = 90 - T.

Setting the equation, representing the total amount -

6N + 12T = 600

Substituting this value of N into the second equation -

6(90 - T) + 12T = 600

540 - 6T + 12T = 600

6T = 600 - 540

6T = 60

T = 60 / 6

T = 10

Substituting the value of T back into the first equation to find the value of n or total notebooks -

N + 10 = 90

N = 90 - 10

N = 80

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