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Andrew [12]
4 years ago
15

Acticity 2.5.2 the vertical angles theorem

Mathematics
1 answer:
oksano4ka [1.4K]4 years ago
6 0

the answer is 5.5.5.5.5 because i just did the math

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A random sample of 28 items is drawn from a population whose standard deviation is unknown. The sample mean is x=900 and the sam
tatiyna

Answer:

<em>795.596≤u≤804.403</em>

Step-by-step explanation:

Confidence interval is expressed using the formula;

CI = xbar ± (z*s/√n)

xbar is the sample mean

z is the z score at 98% confidence

s is the standard deviation

n is the sample size

Given

xbar = 800

z = 2.33

s = 10

n = 28

Substitute into the formula;

CI =800 ± (2.33*10/√28)

CI = 800 ± (2.33*10/5.2915)

Ci = 800± (2.33* 1.8898)

CI = 800 ± 4.4033

CI = (800-4.4033, 800 + 4.4033)

CI = (795.596, 804.403)

<em>Hence an interval estimate of u with 98% confidence is expressed as </em>

<em>795.596≤u≤804.403</em>

7 0
3 years ago
In the equation ax^2+bx+c the expression b^2-4ac is called what
LenKa [72]
It is called the discriminant
3 0
3 years ago
Read 2 more answers
A una distancia de 2 metros de la base de una torre, vemos su bandera en un Distancia de 5,39 metros en línea recta. ¿Cuál es la
Sidana [21]

Answer:

La altura de la torre es de 4,0052 m.

Step-by-step explanation:

En la figura vemos que la persona está parada en C y la bandera en A.

Se dan la base y la hipotenusa, tenemos que encontrar la altitud / altura / perpendicular del triángulo.

Según el teorema de Pitágoras

hipotenusa² = base² + perpendicular²

o

perpendicular² = hipotenusa²- base²

perpendicular² = 5.39²- 2²

perpendicular² = 29.0521-4

perpendicular² = 25.0521

perpendicular = √25.0521

perpendicular = 5.0052m

Ahora, en el punto A, la altura de la bandera se incluye en la altura de la torre.

La longitud de la bandera se deduce para obtener la altura real de la torre.

perpendicular = longitud de la bandera + altura de la torre

altura de la torre = perpendicular - longitud de la bandera

            = 5.0052-1 = 4.0052m

La altura de la torre es de 4,0052 m.

From the figure we see that the person is standing at C and the flag is at A.

The base and the hypotenuse are given we have to find the altitude / height/ perpendicular of the triangle.

According to Pythagorus theorem

hypotenuse²= base² + perpendicular²

or

perpendicular²= hypotenuse²- base²

perpendicular²= 5.39²- 2²

perpendicular²= 29.0521-4

perpendicular²= 25.0521

perpendicular= √25.0521

perpendicular= 5.0052m

Now at the point A the height of the flag is included in the height of the tower.

The length of the flag is deducted to get the actual height of the tower.

perpendicular= flag length  + tower height

tower height = perpendicular - flag length

            =5.0052- 1= 4.0052m

The tower height is 4.0052m

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3 years ago
List the following expressions in order from least to greatest. (explain how you calculated the
irga5000 [103]

Step-by-step explanation:

Since d is an decimal, the higher the power of d, the smaller the value.

8 0
3 years ago
estimate the number of hot dogs sold by rounding each number in the table to the nearest thousand and finding the sum
Lostsunrise [7]
You need to tell us what number of hot dogs there are, I can help you solve this!
8 0
3 years ago
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