Leslie is a biologist. she is going to randomly select one animal from her lab to study. there are 5 salamanders, 3 crayfish, and 12 minnows in her lab.

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Leslie is a biologist. She is going to randomly select one animal from her lab to study. There are 5 salamanders, 3 crayfish, and 12 minnows in her lab. What is P{salamanders}.

0.25 or 25%

Step-by-step explanation:

Since there are number of salamanders = 5

number of crayfish = 3

number of minnows = 12

total number of animals n = 5 + 3 + 12 = 20

She wants to randomly select an animal and check if it is Salamander or not.

                =

                =  

                = 0.25 or 25%

146 days

step-by-step explanation:

1. (365*2)/5 =

730/5 =

146 days

2. 365/5=

73*2   = 146

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm