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
If I have a price of 125 and there is a 20% discount, what is my price now?
mojhsa [17]
100 is your price now
3 0
3 years ago
Read 2 more answers
How can you justify that the function shown in the table is linear?
Leya [2.2K]

Answer:

the answer is b bcz i think

3 0
3 years ago
Read 2 more answers
Dylan is 15, which is 3 years older than twice his sister Savannah’s age. How old is savannah
Brrunno [24]

Answer:

Savannah's age = 6 years

Step-by-step explanation:

Let

Savannah's age = x

Dylan's age = 15

Dylan is 15, which is 3 years older than twice his sister Savannah’s age

Dylan = 2x + 3

Find Savannah's age

2x + 3 = 15

Subtract 3 from both sides

2x + 3 - 3 = 15 - 3

2x = 12

Divide both sides by 2

2x / 2 = 12 / 2

x = 6

Therefore,

Savannah's age = x

= 6 years

Dylan's age = 2x +3

= 2*6 + 3

= 12 + 3

= 15 years

4 0
3 years ago
Help pls i dont know
Oksana_A [137]
I'm sorry the picture is blurry. Could you post another one.
7 0
3 years ago
the length of a rectangle is 2 in more than it's w i d t h the area of a rectangle is equal to 1 inch less than three times a pe
Marizza181 [45]
If we let x and y represent length and width, respectively, then we can write equations according to the problem statement.
.. x = y +2
.. xy = 3(2(x +y)) -1

This can be solved a variety of ways. I find a graphing calculator provides an easy solution: (x, y) = (13, 11).

The length of the rectangle is 13 inches.
The width of the rectangle is 11 inches.

______
Just so you're aware, the problem statement is nonsensical. You cannot compare perimeter (inches) to area (square inches). You can compare their numerical values, but the units are different, so there is no direct comparison.

6 0
3 years ago
Other questions:
  • I need write an inequality to represent this: spending limit of $30, each product costs $0.30. How many can I buy without going
    7·1 answer
  • THe question asked what is 0.35 written as a ratio?
    11·1 answer
  • If the area of the rectangle shown is 150 square feet, we can use the equation 2x2 - 5x = 150 to find its dimensions. If the sol
    5·2 answers
  • If the scale factor 3/4 and the area is 12cm2 what would the new area be
    14·1 answer
  • Can someone please answer all of these due at 11:59 and I’ll give you a brainliest if right
    14·1 answer
  • Arella needs to paint a board that is 2 meters wide and 3 meters tall. If one cup of paint will cover 1000 square centimeters, h
    12·2 answers
  • 56.8 km equals how many miles
    6·2 answers
  • Anna wants to buy a house at $67,000. She will need at down payment of 15%. What is the down payment amount
    7·2 answers
  • Log of square root of 9/25
    15·1 answer
  • What is the slope of a line with equation y-3=-1/2(x-2)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!