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
Lelu [443]
3 years ago
11

Kevin has an equal number of dimes, nickel and quarters in his piggy bank. He randomly picks a coin, replaces it, and picks anot

her coin. What is the probability that the sum of the two coins is at least 30cents?
Mathematics
1 answer:
san4es73 [151]3 years ago
3 0

Say he has 2 dimes (D), 2 nickels (N), and 2 quarters (Q). There are 3 * 3 = 9 choices for what he can pull out. How many will give at least 30 cents?

Q and N, N and Q, Q and D, D and Q

That's 4 out of 9. So, the probability is 4/9.

You might be interested in
PLease Help! I will give you the brainiest and a lot of points!
gtnhenbr [62]

Answer:

this is the venn diagram I guess..

Step-by-step explanation:

find answer from this.. and check if it is correct

6 0
2 years ago
A coach divided his team into two groups of equal size.
DerKrebs [107]

Applying the percentages, and considering that 70% of the first group drinks at least 2 glasses of water a day, it is found that 0.725 = 72.5% of the team drinks at least 2 glasses of water a day.

The team is divided into two equal groups, hence, each represents 50%.

The <em>percentages </em>associated with drinking at least 2 glasses of water a day is:

  • 70% of 50%(first group)
  • 75% of 50%(second group)

Hence, applying the weighed percentage, the total percentage is:

T = 0.7(0.5) + 0.75(0.5) = 0.725

0.725 = 72.5% of the team drinks at least 2 glasses of water a day.

A similar problem is given at brainly.com/question/1517088

4 0
3 years ago
The probability that Brock scores a penalty kick is LaTeX: \frac{3}{10}3 10 . If he shoots 50 penalty kicks, how many "goals" ca
Feliz [49]

Answer:

15 goals out of 50 penalty kicks was scored by brock

Step-by-step explanation:

If Brock shoots 50 penalty kicks and the probability that he scores a penalty kick is 3/10, the number of goal brock is expected to make can be expressed as:

Number of goals scored = probability value * total penalty kicks taken

Number of goals scored = \frac{3}{10}*50

Number of goals scored = 15 goals

5 0
3 years ago
What is the value of x^0​
hoa [83]

Answer:

Its equal to 1

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Counterexamples and Logic Symbols HW
Mariana [72]
Oh okay i’m i’m i won’t let her do that again lol uuuu just woke her off so she’s not doing well that uuuuu is going on a nap she said she’s going home now brjsjsjjsjdjdjdd
6 0
2 years ago
Other questions:
  • Evaluate 6(8 – 3)<br><br> a) 45<br> b) 30<br> c) 11<br> d) 66
    6·2 answers
  • If Jenna lines up 5 largest beads, how long will the line of beads be
    13·2 answers
  • Anna gets $10 dollars everyday but on sunday on sunday she gets $17 dollars she wants to buy a dress that is 2,000 dollars if sh
    7·1 answer
  • Need help with 9-11 please
    15·2 answers
  • Time to test brainly's mathmaticians
    9·1 answer
  • Which graph represents this equation?
    14·2 answers
  • Could you help my math homework? ;-;<br>Please ​
    9·1 answer
  • I need help with this question. Please &amp; thank you!
    9·2 answers
  • Simplify the expression.<br> 2.5-5.5n - 3n + 6
    7·2 answers
  • Use Completing the Square to convert from Standard Form to Vertex Form<br> y=x2 – 8x + 14
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!