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Vedmedyk [2.9K]

2 years ago

15

Your bookcase contains 3 history book, 5 psychology books, 2 mystery novels and 5 sci-fi books. Assuming each book has an equal

chance of getting chosen, what is the probability of selecting a psychology book at random

1 answer:

dlinn [17]2 years ago

8 0

5/15

Step-by-step explanation:

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For what value(s) of k will the relation not be a function?

kolbaska11 [484]

Answer:

See below

Step-by-step explanation:

The relation is not a function when x -value is same but y- values are different.

#1

k^2 = 4k
k = 0, k = 4

#2

k^2 - 5k = k + 7
k^2 - 6k = 7
k^2 - 6k + 9 = 16
k - 3 = 4 ⇒ k = 7
k - 3 = -4 ⇒ k = -1

#3

k^3 - 5k^2 + 3k = -k
k^3 - 5k^2 + 4k = 0
k(k^2 - 5k + 4) = 0
k = 0, k = 1, k = 4

#4

|k + 1| + 2 = 8
|k + 1| = 6
k = 5, k = -7

8 0

2 years ago

Find the distance between (-4,3,-6) and the origin ((X,Y,Z) Graph)

devlian [24]

The distance between (-4,3,-6) and the origin is $\sqrt{61$

<h3>How to determine the distance?</h3>

The point is given as:

(x, y, z) = (-4,3,-6)

The origin is

(x, y, z) = (0,0,0)

The distance between the point and the origin is calculated as:

$d = \sqrt{x^2 + y^2 + z^2$

So, we have:

$d = \sqrt{(-4)^2 + (3)^2 + (-6)^2$

Evaluate

$d = \sqrt{61$

Hence, the distance between (-4,3,-6) and the origin is $\sqrt{61$

Read more about distance at:

brainly.com/question/7243416

#SPJ1

4 0

1 year ago

I'm confused on the error and how to do the correct work.

lukranit [14]

550-500 is not 500 it’s 50

8 0

2 years ago

the height of angel falls, the tallest water fall in the world is 3212 feet write this in scientific notation

Andrews [41]

Answer:

3.212*10^3

Step-by-step explanation:

you moved the decimal place 3 times

3 0

2 years ago

Read 2 more answers

How do you solve c2+10c+9=0

Valentin [98]

Answer:

Step-by-step explanation:

Step 1: Factor left side of equation.

(c+1)(c+9)=0

Step 2: Set factors equal to 0.

c+1=0 or c+9=0

c=−1 or c=−9

C= -1 OR C= -9

8 0

3 years ago