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dusya [7]
4 years ago
9

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 text P salamander P salamander start text, P, left parenthesis, salamander end text, right parenthesis? If necessary, round your answer to 2 decimal places. In decimal form
Mathematics
2 answers:
Virty [35]4 years ago
4 0

Answer:

is there answer choices?

Step-by-step explanation:

nika2105 [10]4 years ago
4 0

Answer:

0.25

Step-by-step explanation:

Probability = Number of favorable outcomes / Number of posssible

outcomes

There are 5 favorable outcomes (the 5 salamanders).

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

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

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jeyben [28]
The surface area is 252 m
8 0
3 years ago
the diameter of a cylinder is 14cm.the height of the cylinder is 9cm. calculate the Volume and curved surface area​
kicyunya [14]

Answer:

The volume is 1386 cm³ and curved surface area is 396 cm².

Step-by-step explanation:

Given that,

The diameter of a cylinder is 14 cm

Height of the cylinder is 9 cm

We need to find the volume and curved surface area​ .

If r is the radius, r = 14/2 = 7 cm

Volume of a cylinder is given by :

V=\pi r^2 h\\\\V=\dfrac{22}{7}\times (7)^2 \times 9\\\\V=1386\ \text{cm}^3

The curved surface area of the cylinder is given by :

A=2\pi r h\\\\A=2\times \dfrac{22}{7}\times 7\times 9\\\\A=396\ \text{cm}^2

So, the volume is 1386 cm³ and curved surface area is 396 cm².

3 0
3 years ago
If JKLM is a rectangle, JL = 2x + 5, and MK = 7x – 40, find MK
frez [133]

Answer:

MK = 23

Step-by-step explanation:

Rectangle means that the angles are all 90 degrees, so all the sides are not tilted in any direction. Meaning the JL = MK, therefore:

2x + 5 = 7x - 40

subtract 5 from both sides

2x = 7x - 45

subtract 7x from both sides

-5x = -45

divide by -5

x = 9

Now input 9 into the equation

MK = 7(9) - 40 = 63 - 40 = 23

3 0
3 years ago
Read 2 more answers
Please answer the question
olga_2 [115]
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8 0
4 years ago
For the term 7x^5+^2-5-5
zubka84 [21]

Answer:

So this is a quintic degree polynomial

Step-by-step explanation:

I learned this a while ago so I kind of forgot.

also, the equation was a little confusing so if you don't understand, please try and do it yourself because i feel i did it wrong.

4 0
3 years ago
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