1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
What is the experimental probability that a coin toss results in two heads showing?
satela [25.4K]
I can answer without knowing how many coins you are tossing
8 0
3 years ago
WILL MARK BRAINLIST PLS HELP:))
dusya [7]

Answer:

Vertex: (3,0)

Max/min: min

axis of symmetry: x=3

Domain: (-∞,∞)

Range: [3,∞)

zeroes: (3,0)

Step-by-step explanation:

Vertex is where the graph changes directions (so in this case it's the point where it changes from decreasing to increasing) which I think is (3,0)

It's a minimum because the coefficent for the degree is positive

The axis of symmetry is just the x value of the vertex (which is x= 3)

the domain is all possible x values (-∞,∞)

The range is all possible y values [3,∞)

The zeroes is where the line hits the x axis, which is (3,0)

6 0
3 years ago
How do I divide 49 by 14
stira [4]
You can do pencil and paper or use a calculator if necessary 
Your answer is
<em>3.5</em>
4 0
3 years ago
Read 2 more answers
A jar contains 16 quarters, 6 dimes ,7 nickels and 11 pennies, if one coin is selected at random, what is the probability it is
maksim [4K]

Answer:

11/20

Step-by-step explanation:

5 cents is worth $0.05.

A quarter is worth $0.25.

A dime is worth $0.10

A nickel is worth $0.05

A penny is worth $0.01

In total there are 40 coins in the jar.

The coins that are worth more than $0.05 dollars are the dimes and quarters, so there are 22 coins worth more than $0.05.

Therefore, the probability of of picking a coin worth more than 5 cents is:

22 / 40 = 11/20

5 0
3 years ago
PLZ HELP QUICK WILL MARK BRAINLIEST
slega [8]
For the Fist One it’s Pentagonal Pyramid
5 0
3 years ago
Other questions:
  • 1. Use Substitution Method, Show Steps.<br><br> 3x=2y=11 <br> y=5x-1
    15·1 answer
  • A given line has the equation 10x + 2y = −2.
    15·2 answers
  • A car troubles at an average speed of 52 mph how long does it take to travel 286 miles
    14·2 answers
  • plz i need help anyone?A.One leg lies below the x-axis.           B.The origin lies outside of the triangle.                  C.
    6·1 answer
  • Which of the following is the Spanish expression for "me too"?
    8·2 answers
  • 4 sinA + 5 sinA what is the answer of it​
    13·1 answer
  • GUYS I CAN'T GAIN ANYMORE POINTS BECAUSE I NEED TWO BRAINLIESTS. I CAN HELP YOU WITH QUESTIONS IF YOU WANT BUT I REALLY NEED BRA
    15·2 answers
  • the points (80,20) and (120,30) form a proportional relationship. What is the slope of the line that passes though these points?
    7·1 answer
  • Which graph represents y 2 -2x + 3?<br> OA)<br> OB)<br> OC)<br> OD
    12·1 answer
  • BOOKMARK
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!