I need help quick with sampling methods​

Answer:

A = 160

Step-by-step explanation:

Formula 1/2 d1d2

1/2 (16 x 20)

320 x 1/2 OR 320/2

=160

Hope this helps :)

We can find d using pythagorean theorem:

Answer:

So the answer is C hope it helps

Answer:

remember, in order to calculate the weight on earth, we need to multiply the mass of the object with the force of Gravity (9.8 m/s^2 on earth)

so, her weight would be:

48 x 9.8 = 470.4 >>>>>>> Will be 470 if we round it to the nearest whole number.

Step-by-step explanation: Hope this helps. Mark me brainliest!! :)))

Answer: 470

Step-by-step explanation:

We can conclude that V = null(g) ∪ {xu : x ∈ C}. This shows that for any g ∈ L(V, C) and u ∈ V with g(u) ≠ 0, we have V = null(g) ∪ {xu : x ∈ C}.

To show that for any g ∈ L(V, C) and u ∈ V with g(u) ≠ 0, we have V = null(g) ∪ {xu : x ∈ C}, we need to prove two things: Every vector in V can be written as either an element of null(g) or as xu for some x ∈ C. The vectors in null(g) and xu are distinct for different choices of x. Let's proceed with the proof: Consider any vector v ∈ V. We need to show that v belongs to either null(g) or xu for some x ∈ C.

If g(v) = 0, then v ∈ null(g), and we are done. If g(v) ≠ 0, we can define x = (g(v))⁻¹. Since g(v) ≠ 0, x is well-defined. Now, let's consider the vector xu. Applying g to xu, we have g(xu) = xg(u) = (g(u))(g(v))⁻¹. Since g(u) ≠ 0 and (g(v))⁻¹ is well-defined, g(xu) ≠ 0. Therefore, v does not belong to null(g), and it can be written as xu for some x ∈ C. Hence, every vector v ∈ V can be written as either an element of null(g) or as xu for some x ∈ C. To show that null(g) and xu are distinct for different choices of x, we assume xu = yu for some x, y ∈ C. Then, we have xu - yu = 0, which implies (x - y)u = 0.

Since u ≠ 0 and C is a field, we can conclude that x - y = 0, which means x = y. Therefore, for distinct choices of x, the vectors xu are distinct. Hence, null(g) and xu are distinct for different choices of x. As we have established both points, we can conclude that V = null(g) ∪ {xu : x ∈ C}. This shows that for any g ∈ L(V, C) and u ∈ V with g(u) ≠ 0, we have V = null(g) ∪ {xu : x ∈ C}.

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Answer:

a)cross-sectional correlation

Step-by-step explanation:

a test to see whether two variables, measured at the same point in time, are correlated is known as a cross-sectional correlation test

A longitudinal study is a research design that involves repeated observations of the same variables over long periods of time

and so on

The point where the lines carrying the elevations intersect is the orthocenter of a triangle.

A polygon with three edges and three vertices is called a triangle.

It is one of the fundamental geometric shapes.

The symbol for a triangle having vertices A, B, and C is ABC.

In Euclidean geometry, any three points that are not collinear produce a singular triangle and a singular plane (i.e. a two-dimensional Euclidean space).

In other words, every triangle is contained in a plane, and there is only one plane that contains that triangle.

All triangles are enclosed in a single plane if all of the geometry is the Euclidean plane, however, this is no longer true in higher-dimensional Euclidean spaces.

The orthocenter of a triangle is the intersection of the lines that carry the elevations.

Therefore, the point where the lines carrying the elevations intersect is the orthocenter of a triangle.

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Answer:

7 whole times

Step-by-step explanation:

To figure it out your equation should look like 100÷13 = x

And now just solve for x.

X = 7.69

The surface area of the cylinder would be SA = 2π(1.6)² + 3.2π(3.8) square feet.

Option (A) is correct.

What is the surface area of the cylinder?

The surface area of a cylinder can be calculated using the following formula:

SA = 2πr² + 2πrh

where r is the radius of the circular base of the cylinder, h is the height of the cylinder, and π is the mathematical constant pi, approximately equal to 3.14159.

The surface area of a cylinder is the sum of the areas of its top and bottom circles, plus the area of its lateral surface (the curved surface that connects the two circles). The lateral surface area of a cylinder is found by multiplying the height of the cylinder by the circumference of one of its circular bases. Therefore, the correct method to calculate the surface area of the cylinder with diameter labeled 3.2 feet and height labeled 3.8 feet is:

SA = 2π(1.6)² + 3.2π(3.8)

So, the correct answer is:

SA = 2π(1.6)² + 3.2π(3.8) square feet

Hence, the surface area of the cylinder would be SA = 2π(1.6)² + 3.2π(3.8) square feet.

Option (A) is correct.

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Answer:

5

Step-by-step explanation:

The square roots in a + bi form are:

Root #1: 3.68 + 1.13i

Root #2: -3.68 - 1.13i

To find the square roots of the complex number -3 - 2i, we can express it in polar form and then apply the square root operation.

First, let's convert the complex number to polar form:

Magnitude (r) = √((-3)^2 + (-2)^2) = √(9 + 4) = √13

Argument (θ) = tan^(-1)(-2/-3) ≈ 33.69 degrees

Now, let's find the square roots:

Square Root #1:

r(sqrt)(cos(θ/2) + i sin(θ/2))

r = √13

θ/2 = 33.69/2 ≈ 16.845 degrees

Using trigonometric functions, we can find the values for cos(16.845) and sin(16.845):

cos(16.845) ≈ 0.9613

sin(16.845) ≈ 0.2756

Square Root #1:

√13(cos(16.845) + i sin(16.845))

≈ √13(0.9613 + 0.2756i)

Square Root #2:

r(sqrt)(cos((θ + 360)/2) + i sin((θ + 360)/2))

r = √13

(θ + 360)/2 = (33.69 + 360)/2 ≈ 196.845 degrees

Using trigonometric functions, we can find the values for cos(196.845) and sin(196.845):

cos(196.845) ≈ -0.9613

sin(196.845) ≈ -0.2756

Square Root #2:

√13(cos(196.845) + i sin(196.845))

≈ √13(-0.9613 - 0.2756i)

Now, let's write the square roots in a + bi form:

Square Root #1: √13(0.9613 + 0.2756i) ≈ 3.68 + 1.13i

Square Root #2: √13(-0.9613 - 0.2756i) ≈ -3.68 - 1.13i

So, the square roots in a + bi form are:

Root #1: 3.68 + 1.13i

Root #2: -3.68 - 1.13i

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Answer:

x=6/5

Step-by-step explanation:

5x+12=18→ 5x=18-12

5x=6 divide

x=6/5

Answer:

x=6/5

Step-by-step explanation:

(5x+12)=18

5x+12=18

5x=18-12

5x=6

x=6/5

Answer:

Answer D.

Step-by-step explanation:

Because all the other tables don't show enough lunch combinations for the students.

Answer:

1/3 liters. or 33.33333 ml

Step-by-step explanation:

1 2/5 + 1 3/5 = 3

3 liters of juice is there.

3 liters of juice/9 glasses.

1/3 liters of juice is in every glass

Answer:

B.   3,158

Step-by-step explanation:

h(x) = -49x − 125

Let x = -67

h(-67) = -49(-67) − 125

          =3283-125

          = 3158

Answer:

Answer B

Step-by-step explanation:

To find the value of h(-67) for the function h(x) = -49x - 125,

we substitute -67 for x in the function and evaluate it.

h ( - 67 ) = - 49 ( - 67 ) - 125

Now we can simplify the expression:

h ( -67 ) = 3283 - 125

h ( -67 ) = 3158

answer: -9 the slope is -9

On average, a customer spends approximately 1.16 minutes waiting time on hold before they can start speaking to a representative.

To find the average waiting time for a customer on hold before they can start speaking to a representative, we need to consider both the arrival rate of calls and the average service time of the staff members.

Given:

9 staff members taking calls.

On average, one call arrives every 5 minutes (standard deviation of 5 minutes).

Each staff member spends on average 18 minutes with each customer (with a standard deviation of 27 minutes).

To calculate the average waiting time, we need to use queuing theory, specifically the M/M/c queuing model. In this model:

"M" stands for Markovian or memoryless arrival and service times.

"c" represents the number of servers.

In our case, we have an M/M/9 queuing model since we have 9 staff members.

The average waiting time for a customer on hold is given by the following formula:

Waiting time = (1 / (c * (μ - λ))) * (ρ / (1 - ρ))

Where:

c = number of servers (staff members) = 9

μ = average service rate (1 / average service time)

λ = average arrival rate (1 / average interarrival time)

ρ = λ / (c * μ)

First, let's calculate the average arrival rate (λ):

λ = 1 / (average interarrival time) = 1 / 5 minutes = 0.2 calls per minute

Next, calculate the average service rate (μ):

μ = 1 / (average service time) = 1 / 18 minutes = 0.0556 customers per minute

Now, calculate ρ:

ρ = λ / (c * μ) = 0.2 / (9 * 0.0556) ≈ 0.407

Finally, calculate the waiting time:

Waiting time = (1 / (c * (μ - λ))) * (ρ / (1 - ρ))

= (1 / (9 * (0.0556 - 0.2))) * (0.407 / (1 - 0.407))

≈ 1.16 minutes

Therefore, on average, a customer spends approximately 1.16 minutes waiting on hold before they can start speaking to a representative.

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Answer:

The bearing of B from A is 335 Degrees

Step-by-step explanation:

Measure bearings clockwise.

Bearings are measured from the North line.

There are 25 degrees between B and North.

360 Degrees in a circle.

360 - 25 = 335

Answer:

Step-by-step explanation:

Almonds:

Dried Apricots:

Dried Apricots cost less by:

Answer:

x=2

Step-by-step explanation:

We are given that the length of the line segment AC is 39. We are also given the length segment of AB = 9x+7 and the line segment BC is equivalent to -3x+20.

We also know based off the diagram that AC = AB + BC. We can use substitution to set up an equation:

AB+BC=AC

9x+7-3x+20=39

Combine like terms

6x+27=39

Subtract 27 from both sides

6x=12

Divide both sides by 6 to isolate x

x=2

I HOPE IT WILL HELP YOU.

THANK YOU.

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i am happy to help you !!!

To determine the sign of the sum of two integers when one integer is positive and the other is negative, we can follow a simple rule based on their magnitudes.

If the magnitude of the positive integer is greater than the magnitude of the negative integer, the sum will be positive. This is because the positive integer outweighs the negative integer, resulting in a positive value.

On the other hand, if the magnitude of the negative integer is greater than the magnitude of the positive integer, the sum will be negative. In this case, the negative integer dominates and determines the sign of the sum.

In both scenarios, the sign of the larger magnitude integer takes precedence and determines the sign of the sum. It is important to note that the sum will always have the sign of the integer with the larger magnitude, regardless of the specific values of the integers involved.

By considering the magnitudes of the integers, we can easily determine the sign of their sum when one integer is positive and the other is negative.

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Take the square root of each side.

\(\sf \sqrt{x^{2} } =\sqrt{25} \\\\\\ x=\± 5\)

The probability that the X is between 72 and 84 is 0.340 , the correct option is (d) .

In the question ,

it is given that ,

The random variable X is said to be normally distributed  ,

the mean is given as , μ = 70 , and

standard deviation of normal distribution is  (σ) = 10

probability that X is between 72 and 84 is written as P(72 < X < 84)

= P((72 - 70)/10 \(<\) Z \(<\) (84 - 70)/10)

= P(0.2 < Z < 1.4)

= P(0 \(<\) Z \(<\) 1.4) – P(0 \(<\) Z \(<\) 0.2)

From the z table , we get the values as

= 0.4192 – 0.0793

= 0.3399

≈ 0.340

Therefore , The probability that the X is between 72 and 84 is 0.340 , the correct option is (d) .

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Answer:

is rational number.......

The value of   Sin(a + b) =   \(-\frac{3+4\sqrt{15} }{20}\) and value of

Cos (a -b) = 119/400

Given,

In the question;

Sin(a) = 1/4 and cos(b) = -3/5

with a and b both in the interval [\(\frac{\pi }{2} ,\pi\))

To find the sin(a + b) and cos (a - b)

Now, According to the question:

We know that :

Sin (b) =   \(\sqrt{1-cos^2b}\) = 4/5

Cos (a) = - \(\sqrt{1-sin^2a} = - \frac{\sqrt{15} }{4}\)

∴ Sin(a + b) = Sin(a) Cos(b) + Cos(a) Sin(b)

  Sin(a + b) = 1/4. (-3/5) + \(-(\frac{\sqrt{15} }{4} )\) . 4/5

   Sin(a + b)  =   \(-\frac{3+4\sqrt{15} }{20}\)

∴ Cos (a -b) = \(cos^2a -sin^2b\)

Cos (a -b) = \((-\frac{\sqrt{15} }{4} )^2\) - \((\frac{4}{5} )^2\)

Cos (a -b) = 119/400

Hence, The value of   Sin(a + b) =   \(-\frac{3+4\sqrt{15} }{20}\) and value of

Cos (a -b) = 119/400 .

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Answer:

B. 9.427, D. 9.347, F. 9.38, E. 9.4, C. 9.43, A. 9.476,

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

The quotient of 30 and the sum of 5 and 7 as a numerical expression can be represented as follows 30 ÷ (5 + 7) = 30 ÷ 12 = 2.5 Therefore, the numerical expression is 30 ÷ (5 + 7), which simplifies to 2.5 as shown above. response and does not meet the requirement of being.

The quotient of 30 and the sum of 5 and 7 as a numerical expression can be represented as follows:30 ÷ (5 + 7) Multiplication, division, addition, and subtraction are the four basic mathematical operations. Parentheses are often used in numerical expressions to indicate the order of operations, also known as the order of precedence. According to the order of operations, the addition of 5 and 7 must be done first, followed by division.

The expression is evaluated as follows:30 ÷ (5 + 7) = 30 ÷ 12 = 2.5  Therefore, the numerical expression is 30 ÷ (5 + 7), which simplifies to 2.5 as shown above. response and does not meet the requirement of being, The quotient of 30 and the sum of 5 and 7 as a numerical expression can be represented as follows:30 ÷ (5 + 7) Multiplication, division, addition, and subtraction are the four basic mathematical operations. Parentheses are often used in numerical expressions to indicate the order of operations, also known as the order of precedence. According to the order of operations, the addition of 5 and 7 must be done first, followed by division. Therefore, the numerical expression is 30 ÷ (5 + 7), which simplifies to 2.5 as shown above.

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Based on the text, the primary source of primate endangerment today is habitat destruction.

Habitat destruction is considered the primary source of primate endangerment based on various factors mentioned in the text. Primates, like many other species, heavily rely on their natural habitats for survival, including food, shelter, and breeding. However, human activities such as deforestation, urbanization, and land conversion for agriculture or infrastructure development have significantly reduced and fragmented primate habitats.

Habitat destruction leads to the loss of critical resources and disrupts the ecological balance necessary for primate populations to thrive. As their habitats shrink, primates face increased competition for limited resources, reduced access to food and water sources, and decreased opportunities for successful reproduction and rearing of offspring. This loss of habitat also exposes primates to increased vulnerability to predation, disease transmission, and human-wildlife conflicts.

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