Can anyone explain this question about complex numbers ?

For finding a 95% confidence interval:

a) The sample mean is x = 16.13.

The sample standard deviation is s = 6.948.

The degrees of freedom are df = 10.

The critical value of t for a 95% confidence interval is t = 2.228.

The margin of error is ME = t × s/√n = 2.228(6.948)/√11 = 4.263.

The 95% confidence interval is x ± ME = 16.13 ± 4.263 = (11.867, 20.393).

b) The 95% confidence interval is (11.867, 20.393).

This means that we are 95% confident that the true population mean number of visits per physical therapy patient is between 11.867 and 20.393 visits.

c) This is because the confidence interval is a range of values that is likely to contain the true population mean. If many samples of the same size are taken from the same population, then about 95% of the confidence intervals from these samples will contain the true population mean.

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Answer:

angle 2 ande angle 5

Step-by-step explanation:

Answer:

The pair of angles which is not congruent is

<2 and < 5

Hope it will help :)

We know that the area of a rectangle is given by the formula A = l × w, where A is the area, l is the length, and w is the width.

In this case, we are given that the width is 10 meters and the area is 150 square meters. So, we can plug in these values into the formula to find the length:

150 = l × 10

Dividing both sides by 10, we get:

15 = l

Therefore, the length of the rectangle is 15 meters.

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324309

doctors were registered that year.

Explanation:

The questions says, "18.1% of all registered doctors are females"

(Consider, total number of registered doctors as

x

)

that's,

18.1

%

of

x

are female.

and

18.1

%

of

x

is

58

,

700

.

Mathematically,

18.1

100

⋅

x

=

58700

x

=

58700

⋅

100

18.1

x

=

324309

doctors were registered that year.

Answer:

I believe the answer is 7 for the rate of change

Step-by-step explanation:

Answer:

35

Step-by-step explanation:

\(5(3+4)\\\\5(7)\\\\35\)

Hope it will help you.

Answer:

multiple 5 from 3 that answer you will add from 4

Answer

2

Step-by-step explanation:

6+2=8     15/5*2=6       8-6=2

Answer:

12 km

Step-by-step explanation:

16km + 12 = 204

Subtract 12 from both sides:

⇒ 16km = 192

Divide both sides by 16:

⇒ km = 12

\(228 + 6 = 224 + 6 + 4 = 230 + 4 \)

\( = 234\)

Answer: 234

ok done. Thank to me :>

Length of the sides is 54 and 54 inches.

Length is defined as the measurement of distance of an object from one end to the other.

A headboard for a bed is shaped like an isosceles trapezoid.

Since it is a isosceles trapezoid the length are equal in number.

The we have to equate the given lengths,

i.e., 6x+18 = 8x+6

Rearranging the terms we get,

6x-8x = 6-18

-2x = -12

Divide by -2 on both sides we get,

x = 6

Sub x in the given lengths we get,

6x + 18 ⇒ 6 * 6 +18 = 54

8x + 6 ⇒8 *6 +6 = 54

So, length of the sides is 54 inches.

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Answer:

x=5.25 or x=5 1/4

Step-by-step explanation:

These two angles are the same because they are vertical angles. We can write an equation to express this.

x+16=4x-5

Then solve.

x+16=4x-5

-x      -x

16=4x-5

+5     +5

4x=21

x=5.25 or 5 1/4

Answer:

What do we have to do in this? Find x? Let me know I'll explain it in the comment section

The age of Sadie is 6 years.

Two or more expressions with an Equal sign is called as Equation.

Let x be the age of Sadie

x+1 be the age of Guadalupe

The sum of the square of Sadie's age and 5 times Guadalupe's age is 71.

x² +5(x+1)=71

x² +5x+5=71

x² +5x-66=0

Factor out the expression.

x²+11x-6x-66=0

x(x+11)-6(x+11)=0

(x-6)(x+11)=0

x=6 and x=-11

Hence, the age of Sadie is 6 years.

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Answer:

vjjvwplast

Step-by-step explanation:

past I 1 days its just is right

Humanity would achieve a life expectancy of 110 years in approximately 60 years.

To calculate the number of years it would take for humanity to achieve a life expectancy of 110 years, we need to determine the number of decades required to reach this goal based on the given rate of increase.

In 2009, the life expectancy was about 80 years. From that point, we need to calculate the difference between the current life expectancy and the target life expectancy of 110 years.

110 years - 80 years = 30 years

Since the rate of increase is 5.3 years every decade, we can divide the difference by the rate to determine the number of decades required:

30 years / 5.3 years per decade ≈ 5.66 decades

Since we can't have a fraction of a decade, we need to round up to the nearest whole number. Therefore, it would take approximately 6 decades for humanity to achieve a life expectancy of 110 years.

To calculate the number of years, we multiply the number of decades by 10:

6 decades * 10 years per decade = 60 years

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Answer:

24

Step-by-step explanation:

a=2

6x2=12

4(3) AKA 4x3=12

12+12

24

you are welcome Hope that Helped :)) (brainlist maybe :D??)

To answer this question, we need to find the area of the rectangle with sides 14 cm and 9 cm, and, then, we need to subtract from this area, the area of the semicircle with radius = 7 cm (that is, 14 cm /2 = 7 cm).

Therefore, we have:

1. Find the area of the rectangle:

2. Find the area of the semicircle:

The area of a circle is given by:

Therefore, for a semicircle, we have:

Then, we need to subtract this value from the obtained in calculating the area of the rectangle:

From the question, the answer is option D, 49.07 cm squared.

Answer:

none of the above

Step-by-step explanation:

the bar in a fraction always means division only

Answer:

none of the above :)

Step-by-step explanation:

correct answer would be 5/2, 2.5, or 2 1/2

The midpoint of AB is M(-4,2). If the coordinates of A are (-7,3), and the coordinates of B is (-1, 1).

To find the coordinates of point B, we can use the midpoint formula, which states that the coordinates of the midpoint between two points (A and B) can be found by averaging the corresponding coordinates.

Let's denote the coordinates of point A as (x1, y1) and the coordinates of point B as (x2, y2). The midpoint M is given as (-4, 2).

Using the midpoint formula, we can set up the following equations:

(x1 + x2) / 2 = -4

(y1 + y2) / 2 = 2

Substituting the coordinates of point A (-7, 3), we have:

(-7 + x2) / 2 = -4

(3 + y2) / 2 = 2

Simplifying the equations:

-7 + x2 = -8

3 + y2 = 4

Solving for x2 and y2:

x2 = -8 + 7 = -1

y2 = 4 - 3 = 1

Therefore, the coordinates of point B are (-1, 1).

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Answer:

81

Step-by-step explanation:

Answer: 10

2/5 and 1/5 both have denominators of 5. So, 5 is not the least common denominator. 10 only serves a denominator for one number, 1/10.

The answer is 10. Hope this helps you!

Answer:

I think the answer is 1/5 because the denominator is less the 1/10 and it is the 1 farthest away from the denominator out of 1/5 and 2/5

The curved surface area of the cylinder is 48.06 cm².

The circumference of a cylinder is given by the formula:

C = 2πr

where C is the circumference and r is the radius of the base.

In this case, the given circumference is 6 cm.

So, 6 = 2πr

r = 6 / (2π)

r ≈ 0.955 cm

Now, the curved surface area (CSA) of the cylinder using the formula:

CSA = 2πrh

Given the height as 8 cm, we can substitute the values into the formula:

CSA = 2π(0.955 cm)(8 cm)

CSA ≈ 48.06 cm²

Therefore, the curved surface area of the cylinder is 48.06 cm².

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Since our assumption holds for all values between 6 and k, and we have shown it also holds for k+1, we can conclude by strong induction that it is possible to cut a square into n smaller squares for any n ≥ 6.

To prove this using strong induction, we will first establish a base case and then prove that if the statement holds true for any value k, then it also holds true for k+1.
Base Case: n = 6
Divide the square into four equal smaller squares by drawing two lines, one vertical and one horizontal, each passing through the center.

Then, divide one of these smaller squares into two equal rectangles by drawing a line parallel to the side.

We have now divided the original square into 6 smaller squares.
Inductive Step:
Assume the statement is true for all values n = 6, 7, ..., k,

where k ≥ 6.

We want to prove that the statement is true for n = k+1.
Consider a square that is divided into k smaller squares.

We will show that it is possible to divide this square into k+1 smaller squares.

Choose one of the k squares and label it S.

If S is a rectangle, divide it into two smaller squares by drawing a line parallel to the shorter side.

If S is a square, divide it into two equal rectangles by drawing a line through the center parallel to a side.
In either case, we have replaced one of the original k squares with two smaller squares, resulting in a total of k+1 squares.

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Both g(x) = 5 - x² and h(x) = \(5 - e^(6-^x^)\)have the same range as f(x) = -2√(x) - 3 + 8, which is (-∞, 5].

To determine which function has the same range as f(x) = -2√(x) - 3 + 8, we need to first find the range of f(x).

The square root function √(x) takes non-negative values as input and gives non-negative outputs, so the expression -2√(x) will always be non-positive. Therefore, the range of f(x) will be all real numbers less than or equal to -3 + 8, which is 5.

In other words, the range of f(x) is (-∞, 5].

So, we need to find a function whose range is also (-∞, 5]. One possible function is g(x) = 5 - x². We can see that when x is zero, g(x) is at its maximum value of 5, and as we increase or decrease x, g(x) will decrease, eventually approaching negative infinity.

Another possible function is h(x) = 5 - e^(-x). When x is negative infinity, e^(-x) is approaching positive infinity, so h(x) is approaching 0. As we increase x, e^(-x) is approaching zero, so h(x) is approaching 5.

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Answer:

he grows by 5 cm every year between 1999 and 2006

Step-by-step explanation:

This is a arithmetic progression problem with the formula;

T_n = a + (n - 1)d

We are told that In 1999 Daniel was 146 cm tall. He grew to be 176 cm by the year 2006.

Thus;

a = 146

d = 2006 - 1999 = 7

Thus;

176 = 146 + (7 - 1)d

176 - 146 = 6d

30 = 6d

d = 30/6

d = 5 cm

Thus, he grows by 5 cm every year between 1999 and 2006

Answer:

Option A

Here you go.

Hope this help!!

Good luck!!

Horizontal asymptote

The range is

Or

Option A

Answer:

12 meters

Step-by-step explanation:

You have to use the inverse of the pythagorean theorem to do this so you do square root of (20x20-16x16) which is 12

The inequality statement 7.745966… < √59 is true.

The symbol √59 represents the square root of 59, which is approximately 7.681146. The value 7.745966… is a decimal representation of the square root of 59 that has been rounded to three decimal places. Because 7.681146 is less than 7.745966, the inequality statement 7.745966… < √59 is true.

Answer:

Thanks! But why report when the people can't see this question or even get the points since its from a while ago

step-by-step explanation: