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Murrr4er [49]
3 years ago
10

Leslie is a biologist. She is going to randomly select one animal from her lab to study. There are 5 salamanders, 3 crayfish, an

d 12 minnows in her lab.
What is P?
Mathematics
2 answers:
Scrat [10]3 years ago
8 0
5/20 but if you were to simplify it then 1/4
podryga [215]3 years ago
8 0

Answer:

0.25

Step-by-step explanation:

Probability = Number of favorite outcomes / Number of possible outcomes

There are 5 favorable outcomes ( the

There are 20 possible outcomes ( the 5+3+12=20 total animals).

P (salamander) = \frac{5}{20} = 0.25

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50 POINTS + BRAINLIEST TO CORRECT ANSWER!! TRIG/GEO
WINSTONCH [101]

Option C:

We can find the value of PR using law of cosines.

Solution:

Given data:

∠Q = 18°, r = 9.5, p = 6.0

To find which length could be find in the triangle:

Law of cosines:

a^{2}=b^{2}+c^{2}-2 b c \cos A

Substitute a = q, b = r, c = p and A = Q

q^{2}=r^{2}+p^{2}-2 r p \cos Q

If we substitute the values given, we can find q.

q = PR

PR^{2}=r^{2}+p^{2}-2 r p \cos Q

Hence we can find the value of PR using law of cosines.

Option C is the correct answer.

3 0
3 years ago
Read 2 more answers
The perimeters of the triangles shown below are equal
Naya [18.7K]

Answer:

x=19

Step-by-step explanation:

The perimeter of the right triangle is

P=9+12+15 =36

The perimeter of the left triangle is

P =x-7+ x-7+ x-7 = 3x-21

Set them equal

36 = 3x-21

Add 21 to each side

36+21 = 3x-21+21

57 = 3x

Divide each side by 3

57/3 = 3x/3

19 =x

6 0
3 years ago
Read 2 more answers
Write the number 48900 in scientific notation​
omeli [17]
The answer is 4.89 x 10^4
3 0
3 years ago
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1<br> Solve the inequality. Graph the solution.<br> (a)<br> 2 &lt; y/5
olchik [2.2K]

Answer:

Inequality form: y > 10

Interval Notation: (10, ∞)

5 0
3 years ago
PLZ HELP ME
Inessa05 [86]
It would be option C. :)
3 0
3 years ago
Read 2 more answers
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