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
DaniilM [7]
3 years ago
12

Omar ordered his sister a birthday card from a company that randomly selects a card from their inventory. The company has 21 tot

al cards in inventory. 14 of those cards are birthday cards. What is P(not a birthday card)​
Mathematics
1 answer:
Ksju [112]3 years ago
8 0

Answer:

P = 7

Step-by-step explanation:

We have 21 total cards and out of those 21 cards, 14 of those are birthday cards. So that means that the amount of cards that are not birthday cards is the number of cards subtracted by the number of birthday cards, also shown as 21 - 14. So 21 - 14 = P, so now we solve what 21 - 14 is which is 7, so that means P = 7.

Let me know if you have any questions.

You might be interested in
Music Company A charges a $15 membership fee and $0.75 each to download a song. Music Company B charges $0.90 each to download a
Contact [7]

The number of songs that both companies will charge the same amount is 100. And to pay the least amount of money we need to choose Company B.

<h3>Linear Equation: </h3>

The mathematical expressions that we used to find unknown numbers are called Linear Equations. These can be formed by variables and constant terms according to given conditions. Here we use variables like x, y, z, etc to represent unknown variables.

 

Here we have,

Music company A charges a $ 15 membership fee and a $ 0.75 for each downloaded song

Music company B charges $ 0.90 for each downloaded song without the membership fee

Given question

a. For what number of songs will both companies charge the same amount?  

Let for x songs both companies will charge the same amount

Cost to download x songs from Company A

=> 15 + 0.75x

Cost to download x songs from Company B

=>  0.90x

As we assumed both costs are the same

=> 15 + 0.75x = 0.90x

=> 0.90x - 0.75 = 15

=> 0.15x = 15

-> x = 100

Therefore,

The number of songs that both companies will charge the same amount is 100.

b) You anticipate that you will download 150 songs. Which company should you choose if you want to spend the least amount of money?  

Cost of 150 that charges company A =  15 + 150(0.75)  

= 15 + 150(0.75)  = 15 + 112.5 = 127.5  

Therefore,

Company A will charge $ 127.5 for 150 songs

Cost of 150 songs that charges company B = 150(0.90)

= $ 135  

Company B will charge $ 135 for 150 songs

Therefore,

Company B will charge $ 135 for 150 songs

Thus,

To pay the least amount of money we need to choose Company B.

Therefore,

The number of songs that both companies will charge the same amount is 100. And to pay the least amount of money we need to choose Company B.

Learn more about Linear Equations at

brainly.com/question/11897796

#SPJ4

3 0
1 year ago
Carly will be going to college in 3 years. she anticipates that she will need $12,000 to pay for the first year. she currently h
fgiga [73]
12000 - 2900 = 9100

9100 / 36 = 252.77.....about 253 per month
8 0
3 years ago
Read 2 more answers
Solve for the variable of x.<br><br> 2y = x + 36p
Vesnalui [34]

Answer:

x = 2 y − 36 p

Step-by-step explanation:

4 0
3 years ago
Please answer the question. Don't answer if you don't know.
Westkost [7]

the correct answer would be 4 3/4

hope this helps!

lmk if you would like an explanation! :)

4 0
2 years ago
Read 2 more answers
The least common multiple of 24, 28 and 45 is:
lisabon 2012 [21]

Answer: 2520

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Sari has 3 times as many pencil erasers as Sam. Together, they have 28 erasers. How many erasers does Sari have?
    11·2 answers
  • If annual college tuition and fees cost $8675, room and board cost $2235, books are $1850, and other charges are $250 per year,
    11·2 answers
  • You have a cone with a radius of 4 ft and a height of 14 ft. What is the height of the triangle formed by a perpendicular cross-
    7·2 answers
  • Collin did the work to see if 10 is a solution to the equation r/4=2.5
    14·1 answer
  • You deposit $2000 in an account earning 6% interest compounded monthly. How much will you have in the account in 15 years?
    14·1 answer
  • 22 less than the quotient of an unknown number and 35 is -25
    11·1 answer
  • -27=-3p+15-3p solve the equation and show your work
    5·1 answer
  • Solve the expression (-24) + (+6)​
    9·2 answers
  • I'll give brainliest to whoever answers the question correctly!!!!
    12·1 answer
  • E-1, e-2 and e-3 are three engineering students writing their assignments at night. Each of them starts at a different time and
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!