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dangina [55]
3 years ago
13

You have 10 batteries sitting on your desk, three of which are dead. You choose 2 batteries are random for you calculator. What

is the expected number of good batteries that you get?
Mathematics
2 answers:
AnnyKZ [126]3 years ago
6 0
You have 10 batteries 3/10 are dead there are only 7/10 batteries that are good. So the expected number of good batteries you could get is 7.
stepladder [879]3 years ago
6 0

Answer:

1.4

Step-by-step explanation:

on usatestprep

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How many radians is 306°?
ryzh [129]

Answer:

5.34 radians

Step-by-step explanation:

multiply 306 by pi/180

3 0
3 years ago
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Describe the different type of polygons
gladu [14]


Convex Polygons



All of its angles are less than 180°.

All of the diagonals are internal.

Concave Polygons


 At least one angle measures more than 180°.
 At least one of the diagonals is outside the shape of the polygon.

 

Equilateral Polygons


All sides are equal.

 

Equiangular Polygons


All angles are equal.

 

Regular Polygons


They have equal angles and sides

 

Irregular Polygons

They do not have equal angles and sides.

Types of Polygons based on Number of Sides

Triangle


3 sides.

 

Quadrilateral


4 sides.

 

Pentagon


5 sides.

 

Hexagon


6 sides.

 

Heptagon


7 sides.

 

Octagon


8 sides.

 

Enneagon or Nonagon


9 sides.

 

Decagon


10 sides.

 

Hendecagon


11 sides.

 

Dodecagon


12 sides.

 

Tridecagon or triskaidecagon


13 sides.

 

Tetradecagon or tetrakaidecago


14 sides.

 

Pendedecagon


15 sides.

 

Hexdecagon


16 sides.

 

Heptdecagon


17 sides.

 

Octdecagon


18 sides.

 

Enneadecagon


19 sides.

 

Icosagon


20 sides.

 


3 0
3 years ago
Mary took out a student loan for $15,000 at 4% simple interest. how much interest will she pay after 10 years
hammer [34]

Answer:

18,274

Step-by-step explanation:

7 0
3 years ago
write a two step equation that involves multiplication and subtraction, includes a negative coefficien, and has a solution of x=
laiz [17]
-60x+20 = -400
x equals 7
6 0
3 years ago
PLZZZZ!!! IT'S VERY URGENT I WILLARK BRAINLIEST .
Pani-rosa [81]

Answer:

x^3 + 1

Step-by-step explanation:

Swap x and y and solve for y:

x =(y-1)^⅓

x³ = y-1

y = x³+1

f(x) = x³+1

4 0
3 years ago
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