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3 years ago

What’s the line between 2 faces ? A. A vertex B. An edge C. An intersection

Mathematics

1 answer:

Georgia [21]3 years ago

3 0

Answer:

B, an edge, because a vertex is the angular point, and an intersection is the point in where two lines meet.

Step-by-step explanation:

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Iq scores are normally distributed with a mean of 100 and a standard deviation of 15.

bearhunter [10]

Mean is $\mu=100$ and a standard deviation is $\sigma =15$ , then the variable $X\sim N(100,15^2)$ .

Use substitution

$Z=\dfrac{X-\mu}{\sigma},\\ \\ Z=\dfrac{X-100}{15}$ .

This substitution gives you that $Z\sim N(0,1)$ .

a. For X=130, $Z=\dfrac{130-100}{15}=2$ and $Pr(X>130)=Pr(Z>2) =0.9772$ (the decimal value is taken from the Standard Normal Distribution Table).

b. For X=90, $Z=\dfrac{90-100}{15}=-\dfrac{2}{3}$ and for X=110, $Z=\dfrac{110-100}{15}=\dfrac{2}{3}$ . Then $Pr(90$ (the decimal value is taken from the Standard Normal Distribution Table).

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2 years ago

What is the axis of symmetry for the function (x)=5x^2+8?

Hunter-Best [27]

Answer:

x = 0

Step-by-step explanation:

There's no horizontal shift.

8 0

3 years ago

Factor 9(n − 4) − 4n(n − 4)

schepotkina [342]

Hey there :)

9( n - 4 ) - 4n ( n - 4 )
We can take ( n - 4 ) as common as both are getting multiplied by ( n - 4 )

We can join 9 - 4n together

Therefore, the final answer will be ( n - 4 )( 9 - 4n )

4 0

3 years ago

Read 2 more answers

The circumference of the inner circle is 270.04 miles. What is the area of the shaded region?

Shalnov [3]

The answer is 5802.92mi^2

6 0

3 years ago

Read 2 more answers

Maria is comparing the prices of two window cleaning companies. Company A charges $6 per window and an additional $12 as service

k0ka [10]

Answer:

Part A: x is the number of windows

company A=6x+12

companyB=5x+15

Part B

company B

Part C

Step-by-step explanation:

Part B

A 6*8+12=60

B 5*8+15=55

Part C

(6*6+12)-(5*6+15)=3

6 0

3 years ago